Daikin REYQ120PTJU — устранение неполадок электронного расширительного клапана [361/567]

Содержание

• Service manual p.1
• Sius34 801a_b p.1
• Sius34 801a p.1
• Rxyq72 240pydn ptju r 410a heat pump 60hz reyq72 240pydn ptju r 410a heat recovery 60hz p.1
• R 410a heat pump heat recovery rx e yq72 240pydn ptju p.1
• Combination of outdoor units 4 model selection p.2
• Basic control 3 p.2
• Vrviii r 410a heat pump 60hz9 p.2
• Specifications 1 p.2
• Special control 0 p.2
• Refrigerant flow for each operation mode 3 5 function general 1 p.2
• Refrigerant circuit 7 p.2
• R 410a heat pump heat recovery 60hz p.2
• Part 2 p.2
• Part 1 p.2
• Model names of indoor outdoor units 2 external appearance p.2
• Introduction vii p.2
• General information1 p.2
• Functional parts layout rxyq72p 96p 120p 1 p.2
• Outdoor unit pc board layout 3 12 field settings 4 p.3
• Other control 1 p.3
• Functional parts layout 37 p.3
• Basic control 88 p.3
• Vrviii r 410a heat recovery 60hz119 p.3
• Test operation 2 p.3
• Specifications 21 p.3
• Refrigerant flow for each operation mode 41 5 function general 85 p.3
• Refrigerant circuit 28 p.3
• Protection control 3 p.3
• Part 3 p.3
• Test operation 19 p.4
• Specifications 70 2 refrigerant circuit 84 3 operation flow chart 85 4 thermostat sensor in remote controller 87 p.4
• Special control 97 p.4
• Protection control 10 p.4
• Part 4 indoor unit 269 p.4
• Outdoor unit pc board layout 40 12 field setting 41 p.4
• Other control 18 p.4
• Drain pump control 91 p.4
• Troubleshooting 315 p.5
• Control of electronic expansion valve 93 7 freeze prevention 94 8 heater control optional pc board krp1b is required 95 9 list of louver operations 96 10 hot start control in heating operation only 97 11 louver control for preventing ceiling dirt 98 12 field setting 99 p.5
• Troubleshooting by indication on the remote controller 36 p.5
• Symptom based troubleshooting 18 2 troubleshooting by remote controller 21 p.5
• Part 5 p.5
• Troubleshooting op central remote controller 46 p.6
• Troubleshooting op unified on off controller 53 p.7
• Thermistor resistance temperature characteristics 23 7 pressure sensor 25 8 method of checking inverter s power transistors diode modules 26 9 example of connection 29 p.7
• Precautions for new refrigerant r 410a 36 p.7
• Piping installation point 20 p.7
• Piping diagrams 74 p.7
• Part 7 precautions for new refrigerant r 410a 535 p.7
• Part 6 appendix 473 p.7
• Option list 18 p.7
• List of electrical and functional parts 10 p.7
• Index i p.7
• Drawings flow charts iv p.7
• Wiring diagrams for reference 87 p.7
• Warning p.8
• Safety considerations p.8
• Introduction p.8
• Caution in repair p.8
• Warning p.9
• Warning p.10
• Cautions regarding products after repair p.10
• Caution p.10
• Warning p.11
• Warning p.12
• Inspection after repair p.12
• Caution p.12
• Caution p.13
• Preface p.14
• Part 1 general information p.16
• Vj 1 φ 208 230v 60hz ydn 3 φ 460v 60hz tj 3 φ 208 230v 60hz u vju tju standard compatibility symbol p.17
• Outdoor units inverter series p.17
• Model names of indoor outdoor units sius34 801a_b p.17
• Model names of indoor outdoor units p.17
• Indoor units p.17
• Heat recovery p.17
• Heat pump p.17
• General information p.17
• Combination of outdoor units p.17
• Bs units p.17
• Sius34 801a_b external appearance p.18
• Indoor units heat pump heat recovery 60hz p.18
• Indoor units p.18
• General information 3 p.18
• External appearance p.18
• External appearance sius34 801a_b p.19
• Rxyq72p 96p 120pydn rxyq72p 96p 120ptju p.19
• Rxyq144ptju p.19
• Reyq72p 96p 120pydn reyq72p 96p 120p 144ptju reyq144p 168p 192p 216p 240pydn reyq168p 192p 216p 240ptju p.19
• Outdoor units p.19
• General information p.19
• Single use p.20
• Note for multiple connection of 12 ton system or more an optional daikin outdoor unit multi connection piping kit is required p.20
• Multiple use p.20
• Heat recovery p.20
• Heat pump single use p.20
• Combination of outdoor units p.20
• Model selection p.21
• Heat recovery p.21
• Heat pump p.21
• Connectable indoor units number and capacity p.21
• Connectable indoor unit p.21
• Vrviii series p.21
• Use the above tables to determine the capacities of indoor units to be connected make sure the total capacity of indoor units connected to each outdoor unit is within the specified value btu h the total capacity of connected indoor units can be within a range of 50 to 200 of the rated capacity of the outdoor unit rules apply in some models it is not possible to connect the maximum number of connectable indoor units select models so that the total capacity of connected indoor units conforms to the specification p.22
• Unit number and capacity of indoor unit connectable to bs unit p.22
• Indoor unit capacity p.22
• Differences from conventional models p.22
• Specifications 1 p.24
• Special control 0 p.24
• Refrigerant flow for each operation mode 3 5 function general 1 p.24
• Refrigerant circuit 7 p.24
• Protection control 3 p.24
• Part 2 vrviii r 410a heat pump 60hz p.24
• Other control 1 p.24
• Functional parts layout rxyq72p 96p 120p 1 p.24
• Basic control 3 p.24
• Test operation 2 p.25
• Outdoor unit pc board layout 3 12 field settings 4 p.25
• Specifications p.26
• Outdoor units p.26
• Vrviii r 410a heat pump 60hz p.27
• Specifications sius34 801a_b p.27
• Vrviii r 410a heat pump 60hz 13 p.28
• Sius34 801a_b specifications p.28
• Vrviii r 410a heat pump 60hz p.29
• Specifications sius34 801a_b p.29
• Vrviii r 410a heat pump 60hz 15 p.30
• Sius34 801a_b specifications p.30
• Vrviii r 410a heat pump 60hz p.31
• Specifications sius34 801a_b p.31
• Vrviii r 410a heat pump 60hz 17 p.32
• Sius34 801a_b refrigerant circuit p.32
• Rxyq72p 96p 120p p.32
• Refrigerant circuit p.32
• Vrviii r 410a heat pump 60hz p.33
• Symbol name major function p.33
• Rxyq72p 96p 120p p.33
• Rxyq144ptju p.33
• Refrigerant circuit sius34 801a_b p.33
• No in refrigerant system diagram p.33
• M2f inverter fan since the system is the outdoor unit heat exchanging type the fan is operated at 9 step rotation speed by using the inverter p.33
• M1f inverter fan since the system is the outdoor unit heat exchanging type the fan is operated at 9 step rotation speed by using the inverter p.33
• M1c inverter compressor inv1 inverter compressor is operated on frequencies between 52hz and 266hz by using the inverter the number of operating steps is as follows rxyq144ptju 26 step 2 m2c p.33
• Vrviii r 410a heat pump 60hz 19 p.34
• Sius34 801a_b refrigerant circuit p.34
• Refrigerant circuit sius34 801a_b p.35
• Liquid pipe p.35
• Heat exchanger 2 p.35
• Heat exchanger 1 p.35
• Gauge port p.35
• Vrviii r 410a heat pump 60hz p.35
• Suction pipe p.35
• Subcool heat exchanger 2 p.35
• Subcool heat exchanger 1 p.35
• Stop valve p.35
• Rxyq144ptju 12ton single type inv unit 2 p.35
• Rxyq144ptju p.36
• Note for reference number refer to page 17 p.36
• Functional parts layout rxyq72p 96p 120p p.36
• Front view p.36
• Vrviii r 410a heat pump 60hz p.37
• Note for reference numbers refer to page 18 p.37
• Functional parts layout rxyq72p 96p 120p sius34 801a_b p.37
• Front view p.37
• Coil for expansion valve p.37
• Refrigerant flow for each operation mode p.38
• Vrviii r 410a heat pump 60hz 23 p.38
• Sius34 801a_b refrigerant flow for each operation mode p.38
• Rxyq72 96 120pydn ptju cooling operation p.38
• Rxyq72 96 120pydn ptju p.38
• Vrviii r 410a heat pump 60hz p.39
• Rxyq72 96 120pydn ptju heating operation p.39
• Rxyq72 96 120pydn ptju p.39
• Refrigerant flow for each operation mode sius34 801a_b p.39
• Low temperature low pressure p.39
• High temperature high pressure liquid p.39
• High temperature high pressure gas p.39
• Rxyq72 96 120pydn ptju cooling oil return operation p.40
• Rxyq72 96 120pydn ptju p.40
• Low temperature low pressure p.40
• High temperature high pressure liquid p.40
• High temperature high pressure gas p.40
• Vrviii r 410a heat pump 60hz 25 p.40
• Sius34 801a_b refrigerant flow for each operation mode p.40
• Vrviii r 410a heat pump 60hz p.41
• Rxyq72 96 120pydn ptju heating oil return operation p.41
• Rxyq72 96 120pydn ptju p.41
• Refrigerant flow for each operation mode sius34 801a_b p.41
• Low temperature low pressure p.41
• High temperature high pressure liquid p.41
• High temperature high pressure gas p.41
• Vrviii r 410a heat pump 60hz 27 p.42
• Sius34 801a_b refrigerant flow for each operation mode p.42
• Rxyq72 96 120pydn ptju when a single unit is connected defrost p.42
• Rxyq72 96 120pydn ptju p.42
• Low temperature low pressure p.42
• High temperature high pressure liquid p.42
• High temperature high pressure gas p.42
• Vrviii r 410a heat pump 60hz p.43
• Thermostat off p.43
• Rxyq144ptju cooling operation p.43
• Refrigerant flow for each operation mode sius34 801a_b p.43
• One body type p.43
• Indoor unit operation p.43
• Indoor unit p.43
• Fan on p.43
• Fan off p.43
• Cooling unit thermostat on p.43
• Cooling unit p.43
• Heating unit thermostat on p.44
• Heating unit p.44
• Fan on p.44
• Fan off p.44
• Fan ll p.44
• Vrviii r 410a heat pump 60hz 29 p.44
• Thermostat off p.44
• Sius34 801a_b refrigerant flow for each operation mode p.44
• Rxyq144ptju heating operation p.44
• One body type p.44
• Indoor unit operation p.44
• Indoor unit p.44
• Rxyq144ptju cooling oil return operation p.45
• Refrigerant flow for each operation mode sius34 801a_b p.45
• One body type p.45
• Indoor unit operation p.45
• Indoor unit p.45
• Fan on p.45
• Fan off p.45
• Cooling unit thermostat on p.45
• Cooling unit p.45
• Vrviii r 410a heat pump 60hz p.45
• Thermostat off p.45
• Vrviii r 410a heat pump 60hz 31 p.46
• Sius34 801a_b refrigerant flow for each operation mode p.46
• Rxyq144ptju heating oil return operation p.46
• One body type p.46
• Indoor unit operation p.46
• Indoor unit p.46
• Heating unit thermostat on p.46
• Heating unit thermostat off p.46
• Heating unit p.46
• Fan on p.46
• Fan off p.46
• Fan ll p.46
• Fan off p.47
• Fan ll p.47
• Vrviii r 410a heat pump 60hz p.47
• Thermostat off p.47
• Rxyq144ptju partial defrosting 1 defrosting in the right unit p.47
• Refrigerant flow for each operation mode sius34 801a_b p.47
• One body type p.47
• Indoor unit operation p.47
• Indoor unit indoor unit p.47
• Heating unit thermostat on thermostat on p.47
• Heating unit p.47
• One body type p.48
• Indoor unit operation on p.48
• Indoor unit indoor unit p.48
• Heating unit thermostat on thermostat on p.48
• Heating unit p.48
• Fan off p.48
• Fan ll p.48
• Vrviii r 410a heat pump 60hz 33 p.48
• Thermostat off p.48
• Sius34 801a_b refrigerant flow for each operation mode p.48
• Rxyq144ptju partial defrosting 2 defrosting in the left unit p.48
• Vrviii r 410a heat pump 60hz p.49
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju p.49
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju cooling operation when multiple units are connected p.49
• Refrigerant flow for each operation mode sius34 801a_b p.49
• Low temperature low pressure p.49
• High temperature high pressure liquid p.49
• High temperature high pressure gas p.49
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju p.50
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju heating operation when multiple units are connected p.50
• Low temperature low pressure p.50
• High temperature high pressure liquid p.50
• High temperature high pressure gas p.50
• Vrviii r 410a heat pump 60hz 35 p.50
• Sius34 801a_b refrigerant flow for each operation mode p.50
• Vrviii r 410a heat pump 60hz p.51
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju p.51
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju cooling oil return operation when multiple units are connected p.51
• Refrigerant flow for each operation mode sius34 801a_b p.51
• Low temperature low pressure p.51
• High temperature high pressure liquid p.51
• High temperature high pressure gas p.51
• Vrviii r 410a heat pump 60hz 37 p.52
• Sius34 801a_b refrigerant flow for each operation mode p.52
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju p.52
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju heating oil return operation when multiple units are connected p.52
• Low temperature low pressure p.52
• High temperature high pressure liquid p.52
• High temperature high pressure gas p.52
• Vrviii r 410a heat pump 60hz p.53
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju p.53
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju partial defrosting 1 defrosting in the right unit when multiple units are connected p.53
• Refrigerant flow for each operation mode sius34 801a_b p.53
• Low temperature low pressure p.53
• High temperature high pressure liquid p.53
• High temperature high pressure gas p.53
• Vrviii r 410a heat pump 60hz 39 p.54
• Sius34 801a_b refrigerant flow for each operation mode p.54
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju p.54
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju partial defrosting 2 defrosting in the left unit p.54
• Low temperature low pressure p.54
• High temperature high pressure liquid p.54
• High temperature high pressure gas p.54
• Operation of refrigerant regulator p.55
• Discharge of refrigerant refrigerant is discharge from the refrigerant regulator by opening of svc when the load of the outdoor unit is large p.55
• Vrviii r 410a heat pump 60hz p.55
• Refrigerant flow for each operation mode sius34 801a_b p.55
• Recovery of refrigerant surplus refrigerant is recovered to refrigerant regulator by opening of svl and svg when the indoor unit load is small p.55
• Pressure regulating valve refrigerant regulator the circuit will be closed when svl svo svg are all closed in this case the increased pressure in the refrigerant regulator will be transferred to the liquid refrigerant pipe side to regulate the pressure p.55
• Symbol p.56
• Note symbol in are for rxyq144ptju p.56
• Function general p.56
• Operation mode p.57
• Normal operation p.58
• List of functions in normal operation p.58
• Basic control p.58
• 1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant 1 and 2 refer to section 6 control of electronic expansion valve on page 293 p.58
• Heating operation p.59
• Cooling operation p.59
• Compressor pi control p.59
• Carries out the compressor capacity pi control to maintain te at constant during cooling operation and tc at constant during heating operation to ensure stable unit performance p.59
• Timing of outdoor rotation in start of startup control p.59
• System with two outdoor units p.59
• Rotation of outdoor units for multiple outdoor units an operational priority order is assigned to each outdoor unit on the control purpose the operational priority orders of each outdoor unit are switched by means of outdoor unit rotation p.59
• Rotation of outdoor units p.59
• In order to make operating time equal for each compressor of multi connection outdoor units outdoor units are used in rotation p.59
• Rxyq72 96 120pydn ptju p.60
• Rxyq144ptju 12 ton p.60
• Rxyq144ptju p.60
• Pattern 1 p.60
• No 2 no 1 p.60
• No 1 no 2 p.60
• Inv2 inv1 p.60
• Inv inverter compressor std1 standard compressor 1 p.60
• Each compressor operates in the following order of priority p.60
• Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to the operating conditions p.60
• Compressor operating priority p.60
• Vrviii r 410a heat pump 60hz 45 p.60
• Std1 inv p.60
• Sius34 801a_b basic control p.60
• Rxyq72p 96p 120p p.60
• Vrviii r 410a heat pump 60hz p.61
• Rxyq144p 168p 192p 216p 240p p.61
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju p.61
• Pattern 1 pattern 2 p.61
• No 2 no 4 p.61
• No 1 no 3 p.61
• Inv std1 p.61
• Inv inverter compressor std1 standard compressor 1 p.61
• Each compressor operates in the following order of priority in the case of multi outdoor unit system each compressor operates in any of pattern 1 through pattern 2 according to the rotation of outdoor units p.61
• Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to the operating conditions p.61
• Compressor operating priority p.61
• Basic control sius34 801a_b p.61
• While in automatic refrigerant charge mode this function is used to exert pi control on the opening degree of the electronic expansion valve y2e in response to outdoor temperature and close the valve after the completion of refrigerant charge for normal operation fully open this electronic expansion valve p.62
• When the outdoor unit heat exchanging is performed via the evaporator 20sa is set to on this function is used to exert pi control on the electronic expansion valve y1e or y3e so that the evaporator outlet superheated degree sh will become constant p.62
• Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes p.62
• Subcooling electronic expansion valve evt control p.62
• Step control of outdoor unit fans p.62
• Sh tsh te sh evaporator outlet superheated degree f tsh suction pipe temperature f detected by the subcool heat exchanger outlet thermistor r5t te low pressure equivalent saturated temperature f p.62
• Sh tg te sh evaporator outlet superheated degree f tg suction pipe temperature f detected by the heat exchanger gas pipe thermistor r2t te low pressure equivalent saturated temperature f p.62
• Refrigerant charge electronic expansion valve evj control p.62
• Main electronic expansion valve evm control p.62
• In order to make the maximum use of the subcool heat exchanger this function is used to exert pi control on the electronic expansion valve y2e y3e so that the evaporator side gas pipe superheated degree sh will become constant p.62
• Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode p.62
• Electronic expansion valve pi control p.62
• Outdoor unit fan control in cooling operation p.63
• Multi outdoor unit system p.64
• In case of multi outdoor unit systems this function is used to ensure condensing and evaporating temperatures by changing over the air heat exchanger of the outdoor unit to the evaporator or the condenser in response to loads while in heating operation p.64
• Heat exchanger control p.64
• Vrviii r 410a heat pump 60hz 49 p.64
• Sius34 801a_b basic control p.64
• Rxyq144ptju p.64
• This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined to position the four way valve the master and slave units simultaneously start up p.65
• Startup control in cooling operation p.65
• Startup control p.65
• Special control p.65
• Startup control in heating operation p.66
• Large capacity start up control heating p.66
• For startup oil return operation or setup after defrosting start up multiple compressors at a high speed according to the p.66
• Start up std compressors at intervals of 15 seconds p.67
• Oil return operation p.67
• Cooling oil return operation p.67
• The higher the compressor operating step no the cumulative refrigerant oil consumption increases p.68
• 1 in case of multi outdoor unit system master unit it conducts the operation listed in the table above slave units operating units conduct the operation listed in the table above non operating units conduct the operation listed in the table above after the oil returning process non operating units stop while in preparation mode p.68
• Heating oil return operation p.69
• K the system will switch to defrost operation refer to section 7 for detail p.69
• Single system p.71
• Defrost operation p.71
• Start conditions referring to the following conditions start defrost operation when there is a decrease in the coefficient of heat transfer of outdoor unit heat exchanger when there is a drop in the temperature of outdoor unit heat exchanger outlet tb when the low pressure stays low for a certain amount of time 2 hours minimum furthermore the thermal conductivity of outdoor unit heat exchanger is calculated by tc te and compressor loads p.72
• Multi outdoor unit system p.72
• Pump down residual operation in cooling operation p.73
• Pump down residual operation p.73
• If the liquid refrigerant stays in the evaporator at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance consequently in order to recover the refrigerant in the evaporator while the compressor stops the pump down residual operation is conducted p.73
• Pump down residual operation in heating operation p.74
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively p.74
• Used to forcedly stop the compressor for a period of 2 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system p.75
• Standby p.75
• Restart standby p.75
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively p.75
• In order to prevent the refrigerant from condensing in the compressor oil when in the stopped mode this mode is used to control the crankcase heater p.76
• Crankcase heater control p.76
• When system is in stop mode normal operation stop p.76
• This mode is used to define actuator operations when the system stops p.76
• Stopping operation p.76
• Stop due to malfunction p.77
• In order to protect compressors if any of the following items has an abnormal value the system will execute a stop with thermostat off and the malfunction will be determined according to the number of retry times p.77
• This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure p.78
• Protection control p.78
• In cooling operation the following control is performed in the entire system pc_max indicates the maximum value within the system p.78
• High pressure protection control p.78
• Heating operation the following control is performed in the entire system pc_max indicates the maximum value within the system p.79
• When occurring 4 times within 30 min the malfunction code e4 is displayed p.80
• This low pressure protection control is used to protect compressors against the transient decrease of low pressure p.80
• Low pressure protection control p.80
• In cooling operation because of common low pressure the following control is performed in the system pe_min indicates the minimum value within the system p.80
• In heating operation for multi outdoor unit systems the entire system performs this control in the following sequence p.81
• 1 pe_min represents a minimum low pressure value detected within the system 2 for compressor steps refer to information on page 45 p.81
• This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature contents the following control is performed for each compressor p.82
• Std compressor p.82
• Inv compressor p.82
• Discharge pipe protection control p.82
• 1 htdi represents a value obtained by correcting the discharge pipe temperature tdi of inv compressor with an outdoor temperature 2 for inv compressor steps refer to information on page 45 p.82
• Inverter protection control p.83
• Inverter overcurrent protection control perform the following control of integrated for each inv compressor p.83
• Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase p.83
• In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence p.83
• Inverter fin temperature control perform the following control of integrated for each inv compressor p.84
• This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of the std compressor such as locking p.85
• Std compressor overload protection p.85
• Other control p.86
• Heating operation prohibition p.86
• Demand operation p.86
• Backup operation p.86
• Test operation p.87
• Installation process p.87
• Procedure and outline p.88
• Check work prior to turn power supply on p.88
• Open open open p.89
• Is a correct quantity of refrigerant charged the following method is available for additional charging of refrigerant 1 calculate additional refrigerant quantity p.89
• If there is a refrigerant shortage after completion of vacuum drying close the liquid and gas stop valves and charge liquid refrigerant through the stop valve service port if the refrigerant charging is still insufficient turn on the power supply following the information on the page 75 p.89
• Has the additional refrigerant charging amount been recorded on the precautions for servicing label p.89
• Check to be sure the following stop valves are open p.89
• Check the status of the stop valves p.89
• Check on amount of refrigerant charge p.89
• Calculate a necessary additional refrigerant charging amount according to the procedure for calculation shown below procedure for calculating additional refrigerant charging amount unit 0 kg p.89
• Check for normal operation p.90
• Before starting the normal operation after the completion of check operations make sure indoor and outdoor units are operating normally p.90
• Be sure to turn the power on 6 hours before starting operation to power on the crankcase heater this protects the compressors p.90
• Another switch box is provided on the front left side of the unit but it requires no field settings p.90
• Vrviii r 410a heat pump 60hz 75 p.90
• Turn power on p.90
• Turn outdoor unit and indoor unit power on p.90
• The master unit is the outdoor unit to which the transmission wiring for the indoor units is connected the other outdoor units are slave units p.90
• The check operations shown below will be automatically initiated check for erroneous wirings check for failure to open stop valves check for excessive refrigerant refilling automatic judgment of piping length p.90
• Sius34 801a_b test operation p.90
• Make field settings with outdoor unit pc board p.90
• Make field settings if needed for the setting procedure refer to information in 12 field setting from outdoor unit on page 95 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be invalid p.90
• Conduct check operations p.90
• Check to be sure the transmission is normal the transmission is normal if the leds display conditions are as shown in the following table p.90
• Check the led display of the outdoor unit pc board p.90
• Test operation sius34 801a_b p.91
• Referring to figure 25 connect a nitrogen tank refrigerant tank and a vacuum pump to the outside unit the refrigerant tank and the charge hose connection to refrigerant charge port or valve a in figure 25 are needed in 10 additional refrigerant charge and check operation p.91
• Gauge manifold charge hose valve p.91
• Air tight test and vacuum drying p.91
• After finishing piping work carry out airtight test and vacuum drying note always use nitrogen gas for the airtightness test absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop p.91
• Vrviii r 410a heat pump 60hz p.91
• Vacuum pump the vacuum pump for vacuum drying should be able to lower the pressure to 14 psi take care the pump oil never flows backward into the refrigerant pipe when the pump stops p.91
• To prevent entry of any impurities and insure sufficient pressure resistance always use the special tools dedicated for r 410a use charge hose that has a pushing stick for connecting to service port of shutoff valves or refrigerant charge port p.91
• Pipe insulation p.92
• Before working p.93
• Additional refrigerant charge and check operation p.93
• Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 h1p off default p.96
• How to check how many units are connected it is possible to find out how many indoor or outside unit in the system are turned on by operating the push button on the pc board a1p of outside unit in case of multi system master unit follow the procedure below to check how many indoor or outside units are turned on p.96
• Procedure of adding refrigerant charging and check operation p.97
• Procedure of adding refrigerant charging p.98
• The marks of led mean as follows p.100
• Sius34 801a_b test operation p.100
• Off on or blinking p.100
• Blinking p.100
• Automatic refrigerant charging operation procedure p.100
• 1 open the liquid pipe and gas pipe shutoff valves the valve a c must be closed see figure 31 2 close the electrical components box 1 lid and all front panel except on the electrical components box 1 side 1 turn the power to the outdoor unit and all connected indoor units 2 after h2p stop blinking about 12 minutes after turning on the power check that h2p is off if h2p is on check the malfunction code in the remote controller of indoor unit and correct the malfunction in accordance with remote controller display malfunction code in chapter 11 2 2 3 check the led push the mode button bs1 once if the led display is not as below p.100
• Vrviii r 410a heat pump 60hz 85 p.100
• Procedure of check operation p.103
• Test run p.104
• Onsite settings p.104
• Before test run p.104
• Test run p.105
• When turning on power the second time and subsequent p.106
• When turning on power first time p.106
• Operation when power is turned on p.106
• Checks after test run p.106
• When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed p.107
• Electrical components box upper right p.107
• Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc status p.107
• 3 mode setting switch used to change mode p.108
• 2 set mode display led leds display mode according to the setting p.108
• 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs p.108
• Outdoor unit pc board layout p.108
• Outdoor unit pc board p.108
• 4 local setting switch used to make field settings p.108
• List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 101 onward p.109
• Field settings on the outdoor unit p.109
• Field settings p.109
• Setting by dip switches p.110
• For setting items of 1 refer to detailed information provided on page 101 onward p.110
• 1 factory setting of initial pc board p.110
• Make the settings according to models of outdoor units all models are set to off at factory refer to following pages for setting detail p.111
• Initial conditions of dip switches p.111
• For detail of the setting procedure refer to information on the following pages while the pc board assembly is replaced the u3 malfunction test run not carried out yet code is displayed in this case carry out the test run again if the pj ua or u7 malfunction code is displayed recheck for dip switch settings after the completion of rechecking for the settings turn on the power supply again p.111
• Do not make any changes in all factory settings of the dip switches on the control pc board p.111
• Dip switch setting after changing the main pc board a1p to spare parts pc board after the replacement by the spare pc board be sure to make settings shown below when you change the main pc board a1p to spare parts pc board please carry out the following setting p.111
• Dip switch detail p.111
• Caution p.111
• Setting at replacement by spare pc board p.111
• The following settings are made by push button switches on pc board in case of multi outdoor unit system various items should be set with the master unit setting with the slave unit is disabled the master unit and slave unit can be discriminated with the led display as shown below p.112
• Setting by push button switches p.112
• Detail of ds1 1 4 ds2 1 4 setting p.112
• Vrviii r 410a heat pump 60hz 99 p.114
• Sius34 801a_b field settings p.114
• Mode changing procedure 2 p.114
• Vrviii r 410a heat pump 60hz p.115
• This mode is used to set and check the following items check items the following items can be checked 1 current operating conditions normal abnormal in check operation 2 low noise operating conditions in normal operation in low noise operation 3 demand operating conditions in normal operation in demand operation p.115
• Field settings sius34 801a_b p.115
• A setting mode 1 p.115
• 7 8 7 7 7 7 p.115
• B setting mode 2 p.116
• The numbers in the no column represent the number of times to press the set bs2 button p.117
• Bs5 rewiring p.117
• 8 7 8 7 8 p.120
• 1 number of connected indoor units used to make setting of the number of indoor units connected to an outdoor unit 2 number of outdoor units used to make setting of the number of outdoor units connected to diii net that is one of the communication lines 3 number of terminal units used to make setting of the number of indoor units connected to diii net that is one of the communication lines only available for vrv indoor units p.120
• 8 7 8 7 7 p.120
• 8 7 7 7 7 p.120
• 7 8 8 8 8 p.120
• 7 8 8 8 7 p.120
• 7 8 8 7 8 p.120
• 7 8 8 7 7 p.120
• 7 8 7 8 8 p.120
• 7 8 7 7 7 p.120
• 7 7 8 8 8 p.120
• Vrviii r 410a heat pump 60hz 105 p.120
• 7 7 8 7 8 p.120
• The numbers in the no column represent the number of times to press the set bs2 button p.120
• 7 7 8 7 7 p.120
• Sius34 801a_b field settings p.120
• 7 7 7 8 8 p.120
• C monitor mode p.120
• 7 7 7 8 7 p.120
• 8 8 7 7 8 p.120
• 7 7 7 7 8 p.120
• 8 7 8 8 7 p.120
• 7 7 7 7 7 p.120
• Setting of low noise operation and demand operation p.121
• Setting of low noise operation p.121
• 7 8 7 7 7 p.121
• 7 7 9 7 7 p.121
• 7 7 8 7 7 p.121
• 7 7 7 9 7 p.121
• 7 7 7 8 7 p.121
• 7 7 7 7 9 p.121
• 7 7 7 7 8 p.121
• 7 7 7 7 7 p.121
• Vrviii r 410a heat pump 60hz p.123
• Is received during p.123
• Image of operation in the case of b p.123
• Image of operation in the case of a and b p.123
• Image of operation in the case of a p.123
• Field settings sius34 801a_b p.123
• Can be set with p.123
• Setting of demand operation p.124
• Set the setting condition for set item no 12 setting of external low noise demand operation to yes 3 if necessary while in p.124
• Select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode p.124
• Make setting of the set item no 32 setting of constant demand to on 2 while in p.124
• By connecting the external contact input to the demand input of the outdoor unit external control adaptor optional the power consumption of unit operation can be saved suppressing the compressor operating condition p.124
• B when the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in p.124
• A when the demand operation is carried out by external instructions with the use of the external control adaptor for outdoor unit 1 connect the external adaptor of the outdoor unit and then connect the external input wiring to the low noise operation input terminal on the terminal block x1m refer to the figure shown below 2 while in p.124
• Image of operation in the case of a p.125
• Field settings sius34 801a_b p.125
• Vrviii r 410a heat pump 60hz p.125
• Image of operation in the case of b p.125
• Image of operation in the case of a and b p.125
• Setting mode 1 h1p off in setting mode 2 push the bs1 mode button one time setting mode 2 is entered and h1p lights during the setting mode 1 is displayed in low noise operation and in demand control are displayed 2 setting mode 2 h1p on in setting 1 push and hold the bs1 mode button for more than 5 seconds setting mode 2 is entered and h1p lights push the bs2 set button several times and match the led display with the setting no you want push the bs3 return button one time and the present setting content is displayed push the bs2 set button several times and match the led display with the setting content as shown below you want push the bs3 return button two times returns to push the bs1 mode button one time returns to the setting mode 1 and turns h1p off p.126
• Detailed setting procedure of low noise operation and demand control p.126
• Setting of vacuuming mode p.127
• Setting of refrigerant recovery mode p.127
• Emergency operation p.128
• Check operation function p.128
• Check operation detail p.128
• Sius34 801a_b field settings p.130
• Make disable operation setting by each outdoor unit make the following setting on the outdoor unit 1 if this setting is made on an outdoor unit other than the outdoor unit 2 the setting will become invalid it is possible to tell the outdoor units 1 and 2 according the led displays shown below p.130
• Disabling the outdoor unit 2 from operating set no 39 of setting mode 2 to disable outdoor unit 2 operation p.130
• Disabling the outdoor unit 1 to operate set no 38 of setting mode 2 to disable outdoor unit 1 operation p.130
• Disabling the compressor 2 std or inv2 from operating set no 39 of setting mode 2 to disable compressor 2 operation p.130
• Disabling the compressor 1 inv or inv1 from operating set no 38 of setting mode 2 to disable compressor 1 operation p.130
• Vrviii r 410a heat pump 60hz 115 p.130
• Vrviii r 410a heat pump 60hz p.131
• Field settings sius34 801a_b p.131
• Cancel of emergency operation to cancel the emergency operation conduct the following setting return to factory setting p.131
• Cancel disabling the compressor 2 std or inv2 from operating set no 39 disable compressor 2 operation of setting mode 2 to off p.131
• Cancel disabling the compressor 1 inv or inv1 from operating set no 38 disable compressor 1 operation of setting mode 2 to off p.131
• Vrviii r 410a heat pump 60hz 117 p.132
• Sius34 801a_b field settings p.132
• Cancel the disable operation setting by each outdoor unit make the following setting on the outdoor unit 1 if this setting is made on an outdoor unit other than the outdoor unit 2 the setting will become invalid it is possible to tell the outdoor units 1 and 2 according the led displays shown below p.132
• Cancel disabling the outdoor unit 2 from operating set no 39 disable outdoor unit 2 operation of setting mode 2 to off p.132
• Cancel disabling the outdoor unit 1 from operating set no 38 disable outdoor unit 1 operation of setting mode 2 to off p.132
• Protection control 10 p.134
• Part 3 vrviii r 410a heat recovery 60hz p.134
• Part 3 p.134
• Functional parts layout 37 p.134
• Basic control 88 p.134
• Vrviii r 410a heat recovery 60hz p.134
• Specifications 21 p.134
• Special control 97 p.134
• Refrigerant flow for each operation mode 41 5 function general 85 p.134
• Refrigerant circuit 28 p.134
• Test operation 19 p.135
• Outdoor unit pc board layout 40 12 field setting 41 p.135
• Other control 18 p.135
• Specifications p.136
• Outdoor units p.136
• Vrviii r 410a heat recovery 60hz p.137
• Specifications sius34 801a_b p.137
• Vrviii r 410a heat recovery 60hz 123 p.138
• Sius34 801a_b specifications p.138
• Vrviii r 410a heat recovery 60hz p.139
• Specifications sius34 801a_b p.139
• Vrviii r 410a heat recovery 60hz 125 p.140
• Sius34 801a_b specifications p.140
• Vrviii r 410a heat recovery 60hz p.141
• Specifications sius34 801a_b p.141
• Bs units p.141
• Vrviii r 410a heat recovery 60hz 127 p.142
• Sius34 801a_b specifications p.142
• Connection range for bs unit p.142
• Vrviii r 410a heat recovery 60hz p.143
• Reyq72 96 120pydn ptju p.143
• Refrigerant circuit sius34 801a_b p.143
• Refrigerant circuit p.143
• Heat exchanger 2 p.144
• Heat exchanger 1 p.144
• Gauge port p.144
• Dual pressure gas pipe p.144
• Vrviii r 410a heat recovery 60hz 129 p.144
• Suction pipe p.144
• Subcool heat exchanger 1 p.144
• Stop valve p.144
• Sius34 801a_b refrigerant circuit p.144
• Reyq72 96 120pydn ptju 6ton 8ton 10ton single type inv unit std unit p.144
• Liquid pipe subcool heat exchanger 2 p.144
• Vrviii r 410a heat recovery 60hz p.145
• Reyq144ptju p.145
• Refrigerant circuit sius34 801a_b p.145
• Sius34 801a_b refrigerant circuit p.146
• Reyq144ptju 12ton single type inv unit 2 p.146
• Liquid pipe p.146
• Heat exchanger 2 p.146
• Heat exchanger 1 p.146
• Gauge port p.146
• Vrviii r 410a heat recovery 60hz 131 p.146
• Suction pipe p.146
• Subcool heat exchanger 2 p.146
• Subcool heat exchanger 1 p.146
• Stop valve p.146
• Vrviii r 410a heat recovery 60hz p.147
• Remq72pydn ptju multi 6ton p.147
• Refrigerant circuit sius34 801a_b p.147
• Suction pipe p.148
• Stop valve liquid pipe p.148
• Stop valve equalizing pipe p.148
• Stop valve dual pressure gas pipe p.148
• Stop valve p.148
• Sius34 801a_b refrigerant circuit p.148
• Remq72pydn ptju p.148
• Gauge port p.148
• Vrviii r 410a heat recovery 60hz 133 p.148
• Vrviii r 410a heat recovery 60hz p.149
• Remq96 120pydn ptju multi 8 10ton p.149
• Refrigerant circuit sius34 801a_b p.149
• Vrviii r 410a heat recovery 60hz 135 p.150
• Suction pipe p.150
• Stop valve liquid pipe p.150
• Stop valve equalizing pipe p.150
• Stop valve dual pressure gas pipe p.150
• Stop valve p.150
• Sius34 801a_b refrigerant circuit p.150
• Remq96 120pydn ptju p.150
• Inv s1 p.150
• Gauge port p.150
• Bsvq36 60pvju p.151
• Bs unit functional parts p.151
• Indoor side outdoor side p.151
• Reyq72p 96p 120p p.152
• Note for reference numbers refer to page 128 p.152
• Functional parts layout p.152
• Front view p.152
• Vrviii r 410a heat recovery 60hz p.153
• Reyq144ptju p.153
• Note for reference numbers refer to page 130 p.153
• Functional parts layout sius34 801a_b p.153
• Front view p.153
• Vrviii r 410a heat recovery 60hz 139 p.154
• Sius34 801a_b functional parts layout p.154
• Remq72p p.154
• Note for reference numbers refer to page 132 p.154
• Front view p.154
• Front view p.155
• Vrviii r 410a heat recovery 60hz p.155
• Remq96p 120p p.155
• Note for reference number refer to page 134 p.155
• Functional parts layout sius34 801a_b p.155
• Vrviii r 410a heat recovery 60hz 141 p.156
• Thermostat off p.156
• Sius34 801a_b refrigerant flow for each operation mode p.156
• Reyq72p 96p 120p cooling operation p.156
• Refrigerant flow for each operation mode p.156
• Cooling unit thermostat on p.156
• Cooling unit p.156
• Heating unit p.157
• Fan on p.157
• Fan off p.157
• Fan ll p.157
• Bs unit p.157
• Vrviii r 410a heat recovery 60hz p.157
• Thermostat off p.157
• Reyq72p 96p 120p heating operation p.157
• Refrigerant flow for each operation mode sius34 801a_b p.157
• One body type p.157
• Indoor unit operation p.157
• Indoor unit p.157
• Heating unit thermostat on p.157
• One body type p.158
• Indoor unit operation p.158
• Indoor unit p.158
• Heating unit p.158
• Fan on p.158
• Fan ll p.158
• Cooling unit thermostat on p.158
• Bs unit p.158
• Vrviii r 410a heat recovery 60hz 143 p.158
• Thermostat on p.158
• Thermostat off p.158
• Sius34 801a_b refrigerant flow for each operation mode p.158
• Reyq72p 96p 120p simultaneous cooling heating operation p.158
• Thermostat off p.159
• Reyq72p 96p 120p cooling oil return operation p.159
• Refrigerant flow for each operation mode sius34 801a_b p.159
• One body type p.159
• Indoor unit operation p.159
• Indoor unit p.159
• Fan on p.159
• Fan off p.159
• Cooling unit thermostat on p.159
• Cooling unit p.159
• Bs unit p.159
• Vrviii r 410a heat recovery 60hz p.159
• Vrviii r 410a heat recovery 60hz 145 p.160
• Sius34 801a_b refrigerant flow for each operation mode p.160
• Reyq72p 96p 120p heating oil return operation p.160
• One body type p.160
• Indoor unit operation p.160
• Indoor unit p.160
• Heating unit thermostat on p.160
• Heating unit thermostat off p.160
• Heating unit p.160
• Fan on p.160
• Fan off p.160
• Fan ll p.160
• Bs unit p.160
• Cooling unit thermostat on p.161
• Bs unit p.161
• Vrviii r 410a heat recovery 60hz p.161
• Thermostat on p.161
• Reyq72p 96p 120p oil return operation at simultaneous cooling heating operation p.161
• Refrigerant flow for each operation mode sius34 801a_b p.161
• One body type p.161
• Indoor unit operation p.161
• Indoor unit p.161
• Heating unit p.161
• Fan on p.161
• Fan off p.161
• Heating unit p.162
• Fan on p.162
• Fan off p.162
• Fan ll p.162
• Cooling unit thermostat on thermostat on p.162
• Bs unit bs unit p.162
• Vrviii r 410a heat recovery 60hz 147 p.162
• Thermostat on p.162
• Sius34 801a_b refrigerant flow for each operation mode p.162
• Reyq72p 96p 120p partial defrosting 1 defrosting in the right unit p.162
• One body type p.162
• Indoor unit operation p.162
• Indoor unit indoor unit p.162
• One body type p.163
• Indoor unit operation p.163
• Indoor unit indoor unit p.163
• Heating unit p.163
• Fan on p.163
• Fan off p.163
• Fan ll p.163
• Cooling unit thermostat on thermostat on p.163
• Bs unit bs unit p.163
• Vrviii r 410a heat recovery 60hz p.163
• Thermostat on thermostat on p.163
• Reyq72p 96p 120p partial defrosting 2 defrosting in the left unit p.163
• Refrigerant flow for each operation mode sius34 801a_b p.163
• Vrviii r 410a heat recovery 60hz 149 p.164
• Thermostat off p.164
• Sius34 801a_b refrigerant flow for each operation mode p.164
• Reyq144ptju cooling operation p.164
• One body type p.164
• Indoor unit operation p.164
• Indoor unit p.164
• Fan on p.164
• Fan off p.164
• Cooling unit thermostat on p.164
• Cooling unit p.164
• Bs unit p.164
• Vrviii r 410a heat recovery 60hz p.165
• Thermostat off p.165
• Reyq144ptju heating operation p.165
• Refrigerant flow for each operation mode sius34 801a_b p.165
• One body type p.165
• Indoor unit operation p.165
• Indoor unit p.165
• Heating unit thermostat on p.165
• Heating unit p.165
• Fan on p.165
• Fan off p.165
• Fan ll p.165
• Bs unit p.165
• Fan ll p.166
• Cooling unit thermostat on p.166
• Bs unit p.166
• Vrviii r 410a heat recovery 60hz 151 p.166
• Thermostat on p.166
• Thermostat off p.166
• Sius34 801a_b refrigerant flow for each operation mode p.166
• Reyq144ptju simultaneous cooling heating operation p.166
• One body type p.166
• Indoor unit operation p.166
• Indoor unit p.166
• Heating unit p.166
• Fan on p.166
• Indoor unit p.167
• Fan on p.167
• Fan off p.167
• Cooling unit thermostat on p.167
• Cooling unit p.167
• Bs unit p.167
• Vrviii r 410a heat recovery 60hz p.167
• Thermostat off p.167
• Reyq144ptju cooling oil return operation p.167
• Refrigerant flow for each operation mode sius34 801a_b p.167
• One body type p.167
• Indoor unit operation p.167
• One body type p.168
• Indoor unit operation p.168
• Indoor unit p.168
• Heating unit thermostat on p.168
• Heating unit thermostat off p.168
• Heating unit p.168
• Fan on p.168
• Fan off p.168
• Fan ll p.168
• Bs unit p.168
• Vrviii r 410a heat recovery 60hz 153 p.168
• Sius34 801a_b refrigerant flow for each operation mode p.168
• Reyq144ptju heating oil return operation p.168
• Vrviii r 410a heat recovery 60hz p.169
• Thermostat on p.169
• Reyq144ptju oil return operation at simultaneous cooling heating operation p.169
• Refrigerant flow for each operation mode sius34 801a_b p.169
• One body type p.169
• Indoor unit operation p.169
• Indoor unit p.169
• Heating unit p.169
• Fan on p.169
• Fan off p.169
• Cooling unit thermostat on p.169
• Bs unit p.169
• Bs unit bs unit p.170
• Vrviii r 410a heat recovery 60hz 155 p.170
• Thermostat on p.170
• Sius34 801a_b refrigerant flow for each operation mode p.170
• Reyq144ptju partial defrosting 1 defrosting in the right unit p.170
• One body type p.170
• Indoor unit operation p.170
• Indoor unit indoor unit p.170
• Heating unit p.170
• Fan on p.170
• Fan off p.170
• Fan ll p.170
• Cooling unit thermostat on thermostat on p.170
• Fan off p.171
• Fan ll p.171
• Cooling unit thermostat on thermostat on p.171
• Bs unit bs unit p.171
• Vrviii r 410a heat recovery 60hz p.171
• Thermostat on thermostat on p.171
• Reyq144ptju partial defrosting 2 defrosting in the left unit p.171
• Refrigerant flow for each operation mode sius34 801a_b p.171
• One body type p.171
• Indoor unit operation p.171
• Indoor unit indoor unit p.171
• Heating unit p.171
• Fan on p.171
• Vrviii r 410a heat recovery 60hz 157 p.172
• Sius34 801a_b refrigerant flow for each operation mode p.172
• Reyq144pydn cooling operation p.172
• Remq72pydn multi 6ton remq72pydn multi 6ton p.172
• Low temperature low pressure p.172
• High temperature high pressure liquid p.172
• High temperature high pressure gas p.172
• Vrviii r 410a heat recovery 60hz p.173
• Reyq144pydn heating operation p.173
• Remq72pydn multi 6ton remq72pydn multi 6ton p.173
• Refrigerant flow for each operation mode sius34 801a_b p.173
• Low temperature low pressure p.173
• High temperature high pressure liquid p.173
• High temperature high pressure gas p.173
• Vrviii r 410a heat recovery 60hz 159 p.174
• Sius34 801a_b refrigerant flow for each operation mode p.174
• Reyq144pydn simultaneous cooling heating operation p.174
• Remq72pydn multi 6ton remq72pydn multi 6ton p.174
• Low temperature low pressure p.174
• High temperature high pressure liquid p.174
• High temperature high pressure gas p.174
• High temperature high pressure liquid p.175
• High temperature high pressure gas p.175
• Vrviii r 410a heat recovery 60hz p.175
• Reyq144pydn cooling oil return operation p.175
• Remq72pydn multi 6ton remq72pydn multi 6ton p.175
• Refrigerant flow for each operation mode sius34 801a_b p.175
• Low temperature low pressure p.175
• Vrviii r 410a heat recovery 60hz 161 p.176
• Sius34 801a_b refrigerant flow for each operation mode p.176
• Reyq144pydn heating oil return operation p.176
• Remq72pydn multi 6ton remq72pydn multi 6ton p.176
• Low temperature low pressure p.176
• High temperature high pressure liquid p.176
• High temperature high pressure gas p.176
• Refrigerant flow for each operation mode sius34 801a_b p.177
• Low temperature low pressure p.177
• High temperature high pressure liquid p.177
• High temperature high pressure gas p.177
• Vrviii r 410a heat recovery 60hz p.177
• Reyq144pydn oil return operation at simultaneous cooling heating operation p.177
• Remq72pydn multi 6ton remq72pydn multi 6ton p.177
• Vrviii r 410a heat recovery 60hz 163 p.178
• Sius34 801a_b refrigerant flow for each operation mode p.178
• Reyq144pydn partial defrosting 1 defrosting in the right unit p.178
• Remq72pydn multi 6ton remq72pydn multi 6ton p.178
• Low temperature low pressure p.178
• High temperature high pressure liquid p.178
• High temperature high pressure gas p.178
• Reyq144pydn partial defrosting 2 defrosting in the left unit p.179
• Remq72pydn multi 6ton remq72pydn multi 6ton p.179
• Refrigerant flow for each operation mode sius34 801a_b p.179
• Low temperature low pressure p.179
• High temperature high pressure liquid p.179
• High temperature high pressure gas p.179
• Vrviii r 410a heat recovery 60hz p.179
• Vrviii r 410a heat recovery 60hz 165 p.180
• Sius34 801a_b refrigerant flow for each operation mode p.180
• Reyq168p 192p cooling operation p.180
• Remq72p multi 6ton remq96 120p multi 8 10ton p.180
• Low temperature low pressure p.180
• High temperature high pressure liquid p.180
• High temperature high pressure gas p.180
• Vrviii r 410a heat recovery 60hz p.181
• Reyq168p 192p heating operation p.181
• Remq72p multi 6ton remq96 120p multi 8 10ton p.181
• Refrigerant flow for each operation mode sius34 801a_b p.181
• Low temperature low pressure p.181
• High temperature high pressure liquid p.181
• High temperature high pressure gas p.181
• High temperature high pressure gas p.182
• Vrviii r 410a heat recovery 60hz 167 p.182
• Sius34 801a_b refrigerant flow for each operation mode p.182
• Reyq168p 192p simultaneous cooling heating operation p.182
• Remq72p multi 6ton remq96 120p multi 8 10ton p.182
• Low temperature low pressure p.182
• High temperature high pressure liquid p.182
• Vrviii r 410a heat recovery 60hz p.183
• Reyq168p 192p cooling oil return operation p.183
• Remq72p multi 6ton remq96 120p multi 8 10ton p.183
• Refrigerant flow for each operation mode sius34 801a_b p.183
• Low temperature low pressure p.183
• High temperature high pressure liquid p.183
• High temperature high pressure gas p.183
• Low temperature low pressure p.184
• High temperature high pressure liquid p.184
• High temperature high pressure gas p.184
• Vrviii r 410a heat recovery 60hz 169 p.184
• Sius34 801a_b refrigerant flow for each operation mode p.184
• Reyq168p 192p heating oil return operation p.184
• Remq72p multi 6ton remq96 120p multi 8 10ton p.184
• Vrviii r 410a heat recovery 60hz p.185
• Reyq168p 192p oil return operation at simultaneous cooling heating operation p.185
• Remq72p multi 6ton remq96 120p multi 8 10ton p.185
• Refrigerant flow for each operation mode sius34 801a_b p.185
• Low temperature low pressure p.185
• High temperature high pressure liquid p.185
• High temperature high pressure gas p.185
• Reyq168p 192p partial defrosting 1 defrosting in the right unit p.186
• Remq72p multi 6ton remq96 120p multi 8 10ton p.186
• Low temperature low pressure p.186
• High temperature high pressure liquid p.186
• High temperature high pressure gas p.186
• Vrviii r 410a heat recovery 60hz 171 p.186
• Sius34 801a_b refrigerant flow for each operation mode p.186
• Vrviii r 410a heat recovery 60hz p.187
• Reyq168p 192p partial defrosting 2 defrosting in the left unit p.187
• Remq72p multi 6ton remq96 120p multi 8 10ton p.187
• Refrigerant flow for each operation mode sius34 801a_b p.187
• Low temperature low pressure p.187
• High temperature high pressure liquid p.187
• High temperature high pressure gas p.187
• Vrviii r 410a heat recovery 60hz 173 p.188
• Sius34 801a_b refrigerant flow for each operation mode p.188
• Reyq216p 240p cooling operation p.188
• Remq96 120p multi 8 10ton remq120p multi 10ton p.188
• Low temperature low pressure p.188
• High temperature high pressure liquid p.188
• High temperature high pressure gas p.188
• Vrviii r 410a heat recovery 60hz p.189
• Reyq216p 240p heating operation p.189
• Remq96 120p multi 8 10ton remq120p multi 10ton p.189
• Refrigerant flow for each operation mode sius34 801a_b p.189
• Low temperature low pressure p.189
• High temperature high pressure liquid p.189
• High temperature high pressure gas p.189
• Vrviii r 410a heat recovery 60hz 175 p.190
• Sius34 801a_b refrigerant flow for each operation mode p.190
• Reyq216p 240p simultaneous cooling heating operation p.190
• Remq96 120p multi 8 10ton remq120p multi 10ton p.190
• Low temperature low pressure p.190
• High temperature high pressure liquid p.190
• High temperature high pressure gas p.190
• High temperature high pressure liquid p.191
• High temperature high pressure gas p.191
• Vrviii r 410a heat recovery 60hz p.191
• Reyq216p 240p cooling oil return operation p.191
• Remq96 120p multi 8 10ton remq120p multi 10ton p.191
• Refrigerant flow for each operation mode sius34 801a_b p.191
• Low temperature low pressure p.191
• Vrviii r 410a heat recovery 60hz 177 p.192
• Sius34 801a_b refrigerant flow for each operation mode p.192
• Reyq216p 240p heating oil return operation p.192
• Remq96 120p multi 8 10ton remq120p multi 10ton p.192
• Low temperature low pressure p.192
• High temperature high pressure liquid p.192
• High temperature high pressure gas p.192
• Refrigerant flow for each operation mode sius34 801a_b p.193
• Low temperature low pressure p.193
• High temperature high pressure liquid p.193
• High temperature high pressure gas p.193
• Vrviii r 410a heat recovery 60hz p.193
• Reyq216p 240p oil return operation at simultaneous cooling heating operation p.193
• Remq96 120p multi 8 10ton remq120p multi 10ton p.193
• Vrviii r 410a heat recovery 60hz 179 p.194
• Sius34 801a_b refrigerant flow for each operation mode p.194
• Reyq216p 240p partial defrosting 1 defrosting in the right unit p.194
• Remq96 120p multi 8 10ton remq120p multi 10ton p.194
• Low temperature low pressure p.194
• High temperature high pressure liquid p.194
• High temperature high pressure gas p.194
• Reyq216p 240p partial defrosting 2 defrosting in the left unit p.195
• Remq96 120p multi 8 10ton remq120p multi 10ton p.195
• Refrigerant flow for each operation mode sius34 801a_b p.195
• Low temperature low pressure p.195
• High temperature high pressure liquid p.195
• High temperature high pressure gas p.195
• Vrviii r 410a heat recovery 60hz p.195
• Vrviii r 410a heat recovery 60hz 181 p.196
• Sius34 801a_b refrigerant flow for each operation mode p.196
• Recovery of refrigerant surplus refrigerant is recovered to refrigerant regulator by opening of svl and svg when the indoor unit load is small p.196
• Operation of refrigerant regulator p.196
• Discharge of refrigerant discharge refrigerant from refrigerant regulator by opening of svc when the load of the outdoor unit is large p.196
• Pressure regulating valve refrigerant regulator the circuit will be closed when svl svo svg are all closed in this case the increased pressure in the refrigerant regulator will be transferred to the liquid refrigerant pipe side to regulate the pressure p.197
• When switching operation from to cooling to heating first the electric expansion valves for evhs evh evl and evls of the indoor unit will be closed next open the evhs and it makes to balance the system pressure finally evh and evhs are opened and the electric expansion valve of the indoor unit is opened to start the operation as a heating circuit p.198
• To heating operation p.198
• Pressure equalizing when switching operation cooling heating p.198
• In equalization p.198
• In cooling operation p.198
• Heating unit p.198
• Cooling unit p.198
• Heating unit p.199
• Cooling unit p.199
• When switching operation from heating to cooling first the electric expansion valve and the solenoid valve for evhs evh evl and evls of the indoor unit will be closed next open the evls and it makes to balance the system pressure finally evl and evls are opened and the electric expansion valve of the indoor unit is opened to start the operation as a cooling circuit p.199
• To cooling operation p.199
• In heating operation p.199
• In equalization p.199
• Symbol p.200
• Function general p.200
• Operation mode p.202
• Normal operation p.203
• List of functions in normal operation p.203
• Basic control p.203
• 1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant p.203
• Heating operation p.204
• Cooling operation p.204
• Compressor pi control p.204
• Carries out the compressor capacity pi control to maintain te at constant during cooling operation and tc at constant during heating operation to ensure stable unit performance p.204
• 1 and 2 refer to chapter 6 control of electonic expansion valve on page 293 p.204
• Timing of outdoor rotation in start of startup control p.204
• System with two outdoor units p.204
• Rotation of outdoor units for multiple outdoor units an operational priority order is assigned to each outdoor unit on the control purpose the operational priority orders of each outdoor unit are switched by means of outdoor unit rotation p.204
• Rotation of outdoor units p.204
• In order to make operating time equal for each compressor of multi connection outdoor units outdoor units are used in rotation however this is not applicable to single units p.204
• Vrviii r 410a heat recovery 60hz p.205
• Operating priority and rotation of compressors p.205
• Compressors may operate in any pattern other than those mentioned above according to the operating status p.205
• Compressor step control compressor operations vary with the following steps according to information in section 2 compressor pi control furthermore the operating priority of compressors is subject to information in operating priority and rotation of p.205
• Basic control sius34 801a_b p.205
• Sius34 801a_b basic control p.206
• Single unit installation p.206
• Reyq72 96 120pydn ptju p.206
• Reyq144ptju 12 ton p.206
• Notes 1 inv inverter compressor std1 standard compressor 1 std2 standard compressor 2 2 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned p.206
• Compressors p.206
• Vrviii r 410a heat recovery 60hz 191 p.206
• Vrviii r 410a heat recovery 60hz p.207
• Two unit multi system p.207
• Reyq168pydn 192pydn 6 8 10 ton p.207
• Reyq144pydn 6 6 ton p.207
• Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned p.207
• Basic control sius34 801a_b p.207
• When the outdoor unit heat exchanging is performed via the evaporator 20sa is set to on this p.208
• Vrviii r 410a heat recovery 60hz 193 p.208
• Two unit multi system p.208
• Sius34 801a_b basic control p.208
• Reyq216pydn 240pydn 8 10 10 ton p.208
• Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned p.208
• Main electronic expansion valve evm control p.208
• Electronic expansion valve pi control p.208
• Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode p.209
• While in cooling operation if the outdoor temperature is low this mode provides high pressure control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant p.209
• While in automatic refrigerant charge mode this function is used to exert pi control on the opening degree of the electronic expansion valve y2e or y4e in response to outdoor temperature and close the valve after the completion of refrigerant charge for normal operation fully open this electronic expansion valve p.209
• Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes p.209
• Subcooling electronic expansion valve evt control p.209
• Step control of outdoor unit fans p.209
• Sh tsh te sh evaporator outlet superheated degree f tsh suction pipe temperature f detected by the subcool heat exchanger outlet thermistor r5t te low pressure equivalent saturated temperature f p.209
• Sh tg te sh evaporator outlet superheated degree f tg suction pipe temperature f detected by the heat exchanger gas pipe thermistor r2t te low pressure equivalent saturated temperature f p.209
• Refrigerant charge electronic expansion valve evj control p.209
• Outdoor unit fan control in cooling operation p.209
• In order to make the maximum use of the subcool heat exchanger this function is used to exert pi control on the electronic expansion valve y2e y5e or y3e so that the evaporator side gas pipe superheated degree sh will become constant p.209
• Function is used to exert pi control on the electronic expansion valve y1e or y3e so that the evaporator outlet superheated degree sh will become constant p.209
• Heat exchanger control p.210
• Fan step 9 p.210
• Fan step 8 p.210
• Fan step 7 p.210
• Circulation rate to be supplied to indoor units p.210
• While in heating or cool heat simultaneous operation ensure target condensing and evaporating temperature by changing over the air heat exchange of outdoor unit to the evaporator or the condenser in response to loads p.210
• Single system p.210
• Pi control p.210
• Lapse of 20 sec p.210
• Hold the current step on outdoor unit fan p.210
• Vrviii r 410a heat recovery 60hz p.211
• Multi outdoor unit system p.211
• Basic control sius34 801a_b p.211
• This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined to position the four way valve the master and slave units simultaneously start up p.212
• Startup control in cooling operation p.212
• Startup control p.212
• Special control p.212
• Startup control in heating operation p.213
• Large capacity start up control heating p.213
• For startup oil return operation or setup after defrosting start up multiple compressors at a high speed according to the p.213
• Cooling oil return operation p.214
• Start up std compressors at intervals of 15 seconds p.214
• Oil return operation p.214
• The higher the compressor operating step no the cumulative refrigerant oil consumption increases p.215
• 1 in case of multi outdoor unit system master unit it conducts the operation listed in the table above slave units operating units conduct the operation listed in the table above non operating units conduct the operation listed in the table above after the oil returning process non operating units stop while in preparation mode p.215
• Start conditions referring to the following conditions start heating oil return operation integral oil rise rate is reached to specified level when cumulative compressor operating time exceeds 8 hours 2 hours when the power supply turns on for the first time furthermore the integral oil rise rate is calculated by tc te and compressor loads the higher the compressor operating step no the cumulative refrigerant oil consumption increases p.217
• Heating oil return operation including cooling heating simultaneous operation p.217
• 1 in case of multi outdoor unit system master unit it conducts the operation listed in the table above slave units operating units conduct the operation listed in the table above non operating units conduct the operation listed in the table above after the oil returning process non operating units stop while in preparation mode p.217
• Start conditions referring to the following conditions start defrost operation when there is a decrease in the coefficient of heat transfer of outdoor unit heat exchanger when there is a drop in the temperature of outdoor unit heat exchanger outlet tb when the low pressure stays low for a certain amount of time 2 hours minimum furthermore the thermal conductivity of outdoor unit heat exchanger is calculated by tc te and compressor loads p.218
• Defrost operation p.218
• Pump down residual operation p.220
• Pump down residual operation in cooling operation p.221
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively p.221
• If the liquid refrigerant stays in the evaporator at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance consequently in order to recover the refrigerant in the evaporator while the compressor stops the pump down residual operation is conducted p.221
• Restart standby p.222
• Pump down residual operation in heating operation and simultaneous cooling heating operation p.222
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively p.222
• Used to forcedly stop the compressor for a period of 2 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system p.222
• Standby p.222
• When system is in stop mode normal operation stop p.223
• This mode is used to define actuator operations when the system stops p.223
• Stopping operation p.223
• In order to prevent the refrigerant from condensing in the compressor oil in the stopped mode this mode is used to control the crankcase heater p.223
• Crankcase heater control p.223
• Stop due to malfunction p.224
• In order to protect compressors if any of the following items has an abnormal value the system will make stop with thermostat off and the malfunction will be determined according to the number of retry times p.224
• This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure p.225
• Protection control p.225
• In cooling operation the following control is performed in the entire system pc_max indicates the maximum value within the system p.225
• High pressure protection control p.225
• Low pressure protection control p.226
• In cooling operation because of common low pressure the following control is performed in the system p.226
• Heating operation and simultaneous cooling heating operation the following control is performed in the entire system pc_max indicates the maximum value within the system p.226
• This low pressure protection control is used to protect compressors against the transient decrease of low pressure p.226
• When occurring 4 times within 30 min the malfunction code e4 is output p.227
• Pe_min indicates the minimum value within the system p.227
• When occurring 4 times within 30 min the malfunction code e4 is displayed p.228
• This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature p.228
• In heating operation and simultaneous cooling heating operation the following control is performed in the system pe_min indicates the minimum value within the system p.228
• Discharge pipe protection control p.228
• Contents the following control is performed for each compressor of single unit as well as multi units p.228
• Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase p.229
• Inv compressor p.229
• In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence p.229
• Htds value of std compressor discharge pipe temperature tds compensated with outdoor air temperature tp value of compressor port temperature calculated by t p.229
• F continues for 10 min or more p.229
• Discharge pipe temp p.229
• Applicable std compressor stops p.229
• After 10 min p.229
• Te and suction superheated degree p.229
• Std compressor p.229
• Protection control not limited p.229
• Inverter protection control p.229
• Inverter overcurrent protection control perform the following control of integrated as well as multi units for each inv compressor p.230
• This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking p.231
• Std compressor overload protection p.231
• Inverter fin temperature control perform the following control of integrated as well as multi units for each inv compressor p.231
• Other control p.233
• In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using demand 1 setting or demand 2 setting to operate the unit with this mode additional setting of continuous demand setting or external input by external control adapter is required p.233
• If any of the compressors goes wrong disable the relevant compressor or the relevant outdoor unit from operating and then conduct emergency operation only with operational compressors or outdoor units emergency operation with remote controller reset and emergency operation with outdoor unit pc board settings are available p.233
• Heating operation prohibition p.233
• Heating operation is prohibited above 75 f ambient temperature p.233
• Demand operation p.233
• Backup operation p.233
• 1 emergency operation with remote controller reset operating method reset the remote controller press the run stop button for 4 seconds or more details of operation disable the defective outdoor unit from operating and then only operate other outdoor units on systems with 1 outdoor unit this emergency operation is not available 2 emergency operation with outdoor unit pc board setting setting method change the setting of the compressor to the emergency operation setting as explained in section 12 field setting on page 95 in section 2 for details of the setting method refer to page 264 details of operation disable the compressor with the operation disable setting and only operate other compressors p.233
• Test operation p.234
• Procedure and outline p.234
• Installation process p.234
• Check work prior to turn power supply on p.235
• Open open open p.236
• Is the correct quantity of refrigerant charged the following method is available for additional charging of refrigerant 1 calculate additional refrigerant quantity p.236
• If there is a refrigerant shortage after the completion of vacuum drying charge liquid refrigerant through the stop valve service port with the liquid and gas stop valves closed if the refrigerant charging is still insufficient turn on the power supply following the information on the page 222 p.236
• Has the additional refrigerant charging amount been recorded on the precautions for servicing label p.236
• Correction amount with indoor unit correction amount with a total capacity of indoor units p.236
• Check to be sure the stop valves are under the following conditions p.236
• Check the stop valves for conditions p.236
• Check on amount of refrigerant charge p.236
• Calculate a necessary additional refrigerant charging amount according to the procedure for calculation shown below procedure for calculating additional refrigerant charging amount unit 0 lb p.236
• Before starting the normal operation after the completion of check operations make sure indoor and outdoor units operate normally p.237
• Be sure to turn the power on 6 hours before starting operation to protect compressors to power on crankcase heater p.237
• Another switch box is provided on the front left side of the unit but it requires no field settings p.237
• Vrviii r 410a heat recovery 60hz p.237
• Turn power on p.237
• Turn outdoor unit and indoor unit power on p.237
• The master unit is the outdoor unit to which the transmission wiring for the indoor units is connected the other outdoor units are slave units p.237
• The check operations shown below will be automatically initiated check for erroneous wirings check for failure to open stop valves check for excessive refrigerant refilling automatic judgment of piping length p.237
• Test operation sius34 801a_b p.237
• Reyq72 120pydn reyq72 144ptju remq72 120pydn remq72 120ptju p.237
• Make field settings with outdoor unit pc board p.237
• Make field settings if needed for the setting procedure refer to information in 12 field setting from outdoor unit on page 242 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be invalid p.237
• Conduct check operations p.237
• Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below p.237
• Check the led display of the outdoor unit pc board p.237
• Check for normal operation p.237
• Gauge manifold charge hose valve p.238
• Air tight test and vacuum drying p.238
• After finishing piping work carry out air tight test and vacuum drying p.238
• Vrviii r 410a heat recovery 60hz 223 p.238
• Vacuum pump the vacuum pump for vacuum drying should be able to lower the pressure to 14 psi take care the pump oil never flows backward into the refrigerant pipe during the pump stops p.238
• To prevent entry of any impurities and to ensure sufficient pressure resistance always use the special tools dedicated for r 410a use a charge hose that has a pushing stick for connecting to the service ports of shutoff valves or refrigerant charge port p.238
• Sius34 801a_b test operation p.238
• Referring to figure 25 connect a nitrogen tank refrigerant tank and a vacuum pump to the outside unit the refrigerant tank and the charge hose connection to refrigerant charge port or the valve a in figure 25 are needed in 10 additional refrigerant charge and check operation p.238
• Note the air tightness test and vacuum drying should be done using the service ports of equalizer pipe hp lp gas pipe suction gas pipe and liquid pipe shutoff valve see the r 410a label attached to the front plate of the outside unit for details on the location of the service port see figure in page 238 see shutoff valve operation procedure in 10 before working for details on handling the shutoff valve the refrigerant charge port is connected to unit pipe when shipped the unit contains the refrigerant so use caution when attaching the charge hose p.238
• Note always use nitrogen gas for the air tightness test absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed if you measure after the shutoff valve is opened it will cause the insulation value to drop p.238
• Pipe insulation p.239
• Vrviii r 410a heat recovery 60hz 225 p.240
• Sius34 801a_b test operation p.240
• Note after knocking out the holes we recommend you remove burrs in the knock holes see figure 27 and paint the edges and areas around the edges using the repair paint p.240
• Checking of device and installation conditions p.241
• Before working p.241
• Additional refrigerant charge and check operation p.241
• Note do not open the shutoff valve until the steps in section 10 checking of device and installation conditions are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to build up in the compressor leading to insulation degradation be sure to use the correct tools the shutoff valve is not a back seat type if forced to open it might break the valve body when using a service port use the charge hose after tightening the cap make sure no refrigerant gas is leaking tightening torque the sizes of the shutoff valves on each model and the tightening torque for each size are listed in the table below p.242
• Liquid pipe shutoff valve p.242
• Φ 3 8 the 120p type rxyq144ptju corresponds to the φ 1 2 diameter onsite piping using the accessory pipe p.242
• Φ 3 4 p.242
• Vrviii r 410a heat recovery 60hz 227 p.242
• Sius34 801a_b test operation p.242
• P type 96p type 120p 144p type p.242
• Warning electric shock warning make sure to close the electrical components box lid before turning on the power perform the setting on the pc board a1p of the outside unit and check the led display after the power is on via the inspection door which is in the electrical components box lid p.243
• Vrviii r 410a heat recovery 60hz p.243
• Use an insulated rod to operate the push buttons via the electrical components box inspection door p.243
• Test operation sius34 801a_b p.243
• Procedure of adding refrigerant charging and check operation p.243
• Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 h1p off default p.243
• How to check how many units are connected it is possible to find out how many indoor or outside units in the system are turned on by operating the push button on the pc board a1p of outside unit in case of multi system master unit follow the procedure below to check how many indoor or outside units are turned on p.243
• Field pipings refrigerant flow when charging p.246
• Charge hose p.246
• Blinking p.246
• Automatic refrigerant charging operation procedure note the led signals represent the following p.246
• Vrviii r 410a heat recovery 60hz 231 p.246
• Valve c p.246
• Valve b p.246
• Valve a to bs indoor unit p.246
• Valve a p.246
• Sius34 801a_b test operation p.246
• Shutoff valve service port p.246
• R 410a tank with siphon p.246
• Off on or blinking 1 open the liquid pipe suction gas pipe and hp lp gas pipe shutoff valves the valve a c must be closed see figure 31 2 close the electrical componets box 1 lid and all front panels except on the electrical componets box 1 side 1 turn on the power to the outdoor unit and all connected bs indoor units 2 after h2p stops blinking about 12 minutes after turning on the power check that h2p is off if h2p is on check the malfunction code in the remote controller of indoor unit and correct the malfunction in accordance with remote controller display malfunction code in chapter 11 2 2 3 check the led and push the mode button bs1 once if the led displays is not as shown in the following diagram p.246
• Mode button bs1 p.246
• Measuring device p.246
• H1p h2p h3p h4p h5p h6p h7p h h i h h h h p.246
• Units powered for checking see how to check how many units are connected in chapter 10 to energize the crankcase heater make sure to turn on the power for 6 hours before starting operation 3 it takes about 2 10 minutes to achieve refrigerant stability if too little refrigerant is added and operation is started before stability is achieved the system cannot precisely judge the amount charged and overcharging will result 4 if the test button bs4 is not pushed within 5 minutes the p2 code will displayed on the remote controller in this case refer to the remote controller cooling or heating mode malfunction code 5 if the front panel is opened during operation the system cannot operate properly 6 if you leave the system without connecting the refrigerant tank or opening the valve a for 30 minutes or more the system stops operation and the p2 code is displayed on the remote controller in this case refer to remote controller cooling or heating mode malfunction code 7 depending on the situatio p.248
• Sius34 801a_b test operation p.248
• Remote controller heating mode malfunction code p.248
• After completing the additional refrigerant charging record the charging amount on the accessory request for the indicaton label installation records and adhere it to the back side of the front panel record the factory charged refrigerant amount additional refrigerant amount in the field and total refrigerant amount of the system to the additional ref charge label and adhere it in the proximity of the refrigerant charge port p.248
• Vrviii r 410a heat recovery 60hz 233 p.248
• Warning electric shock warning use an insulated rod to operate the push buttons via the inspection door of the electrical components box lid avoid touching any live parts as this operation takes place with the power on p.250
• Use the push button switches bs1 through bs5 on the outside unit pc board a1p to make the necessary onsite settings see the service precautions label upper on the electrical components boxlid for details on the positions and operating method of the push button switches and on the onsite setting make sure to record the setting on the accessory request for the indication label p.250
• Test run p.250
• Remote controller displays malfunction code p.250
• Onsite settings p.250
• Note in the case of a multi system all onsite settings should be made on the master unit settings made on subunits are invalid the outside unit to which the indoor unit transmission wires are connected is the master unit and all other units are subunits p.250
• Note if any malfunction codes other than the above are displayed check the service manual for proper procedure p.250
• Make sure the following works are completed in accordance with the installation manual piping work wiring work air tight test vacuum drying additional refrigerant charge check operation check that all work for the bs and indoor unit is finished and that there is no danger to operate p.250
• Before test run p.250
• Test run p.251
• Checks after test run p.251
• Caution for refrigerant leaks p.251
• Operation when power is turned on p.253
• Follow local code requirements ashrai 15 2007 ashrai 34 2007 p.253
• Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to to allow for automatic setting of the indoor outdoor addresses status p.253
• Where a single refrigerant facility is divided into 2 entirely independent refrigerant systems then use the amount of refrigerant with which each separate system is charged p.253
• When turning on power the second time and subsequent p.253
• When turning on power for the first time p.253
• When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed p.253
• The unit cannot be run for up to 12 minutes to allow for automatic setting of the master power and its indoor outdoor addresses status p.253
• Tap the reset button on the outdoor unit pc board operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status p.253
• Outdoor unit pc board layout p.255
• Outdoor unit pc board p.255
• 4 local setting switch used to make field settings p.255
• 3 mode setting switch used to change mode p.255
• 2 set mode display led leds display mode according to the setting p.255
• 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs p.255
• List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 249 onward p.256
• Field setting from outdoor unit p.256
• Field setting p.256
• For setting items of 1 refer to detailed information provided on page 249 onward p.257
• Setting by dip switches p.258
• Setting at replacement by spare pc board p.258
• Initial conditions of dip switches p.258
• Caution p.258
• Detail of ds1 1 4 ds2 1 4 setting p.259
• Detail of ds1 1 4 ds2 1 4 settingmulti unit p.261
• Setting by push button switches p.262
• 7 8 7 7 7 7 8 p.262
• 7 8 7 7 7 7 7 p.262
• 7 7 7 7 7 7 9 p.262
• Vrviii r 410a heat recovery 60hz p.263
• This mode is used to set and check the following items p.263
• Field setting sius34 801a_b p.263
• A setting mode 1 p.263
• 7 8 7 7 7 7 p.263
• 1 current operating conditions normal abnormal in check operation 2 low noise operating conditions in normal operation in low noise operation 3 demand operating conditions in normal operation in demand operation p.263
• B setting mode 2 p.264
• The numbers in the no column represent the number of times to press the set bs2 button p.265
• Bs5 rewiring p.265
• 7 8 7 8 8 p.268
• 7 8 7 8 7 p.268
• 7 8 7 7 8 p.268
• 7 8 7 7 7 p.268
• Vrviii r 410a heat recovery 60hz 253 p.268
• The numbers in the no column represent the number of times to press the set bs2 button p.268
• 7 7 8 8 8 p.268
• Sius34 801a_b field setting p.268
• 7 7 8 8 7 p.268
• C monitor mode p.268
• 7 7 8 7 8 p.268
• 8 8 7 7 8 p.268
• 7 7 8 7 7 p.268
• 8 7 8 8 7 p.268
• 7 7 7 8 8 p.268
• 8 7 8 7 8 p.268
• 7 7 7 8 7 p.268
• 8 7 8 7 7 p.268
• 7 7 7 7 8 p.268
• 8 7 7 7 7 p.268
• 7 7 7 7 7 p.268
• 7 8 8 8 8 p.268
• 1 number of connected indoor units used to make setting of the number of indoor units connected to an outdoor unit 2 number of connected bs units used to make setting of the number of bs units connected to an outdoor unit 3 number of outdoor units used to make setting of the number of outdoor units connected to diii net that is one of the communication lines 4 number of bs units used to make setting of the number of bs units connected to diii net that is one of the communication lines 5 number of terminal units used to make setting of the number of indoor units connected to diii net that is one of the communication lines only available for vrv indoor units p.268
• 7 8 8 8 7 p.268
• 7 8 8 7 8 p.268
• 7 8 8 7 7 p.268
• 7 7 7 7 9 p.269
• 7 7 7 7 8 p.269
• 7 7 7 7 7 p.269
• 7 8 7 7 7 p.269
• 7 7 9 7 7 p.269
• 7 7 8 7 7 p.269
• 7 7 7 9 7 p.269
• 7 7 7 8 7 p.269
• When using cool heat selector turn this switch to the bs side p.270
• When using cool heat selector connect to the terminal a b and c on the terminal block of the electric parts box p.270
• Set remote controller change over switch ss1 ss2 as following p.270
• Set cool heat separately for each bs unit by cool heat selector p.270
• Example of transmission line connection example of connecting transmission wiring connect the transmission wirings as shown in the fig 1 p.270
• Cool heat mode switching p.270
• Setting of low noise operation and demand operation p.271
• Setting of low noise operation p.271
• Image of operation in the case of b p.272
• Image of operation in the case of a and b p.272
• Image of operation in the case of a p.272
• Vrviii r 410a heat recovery 60hz 257 p.272
• Sius34 801a_b field setting p.272
• Setting of demand operation p.273
• By connecting the external contact input to the demand input of the outdoor unit external control adaptor optional the power consumption of unit operation can be saved by suppressing the compressor operating condition p.273
• B when the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode p.273
• A when the demand operation is carried out by external instructions with the use of the external control adaptor for outdoor unit 1 connect the external adaptor of the outdoor unit and then connect the external input wiring to the low noise operation input terminal on the terminal block x1m refer to the figure shown below 2 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 3 if necessary while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode p.273
• Vrviii r 410a heat recovery 60hz 259 p.274
• Sius34 801a_b field setting p.274
• Image of operation in the case of b p.274
• Image of operation in the case of a and b p.274
• Image of operation in the case of a p.274
• Detailed setting procedure of low noise operation and demand control p.275
• Setting of vacuuming mode p.277
• Setting of refrigerant recovery mode p.277
• Check operation function p.278
• Check operation detail p.278
• Emergency operation p.279
• Vrviii r 410a heat recovery 60hz 265 p.280
• Sius34 801a_b field setting p.280
• Make disable operation setting by each outdoor unit make the following setting on the outdoor unit 1 if this setting is made on an outdoor unit other than the outdoor unit 2 the setting will become invalid it is possible to tell the outdoor units 1 and 2 according the led displays shown below p.280
• Disabling the outdoor unit 2 from operating set no 39 of setting mode 2 to disable outdoor unit 2 operation p.280
• Disabling the outdoor unit 1 to operate set no 38 of setting mode 2 to disable outdoor unit 1operation p.280
• Disabling the compressor 2 on the left side from operating set no 39 of setting mode 2 to disable compressor 2 operation p.280
• Disabling the compressor 1 on the right side from operating set no 38 of setting mode 2 to disable compressor 1 operation p.280
• Vrviii r 410a heat recovery 60hz p.281
• Field setting sius34 801a_b p.281
• Cancel of emergency operation to cancel the emergency operation conduct the following setting return to factory setting p.281
• Cancel disabling the compressor 2 on the left side from operating set no 39 disable compressor 2 operation of setting mode 2 to off p.281
• Cancel disabling the compressor 1 on the right side from operating set no 38 disable compressor 1 operation of setting mode 2 to off p.281
• Cancel the disable operation setting by each outdoor unit make the following setting on the outdoor unit 1 if this setting is made on an outdoor unit other than the outdoor unit 2 the setting will become invalid you can determine the outdoor units 1 and 2 according to the led displays shown in the following diagram p.282
• Cancel disabling the outdoor unit 2 from operating set no 39 disable outdoor unit 2 operation of setting mode 2 to off p.282
• Cancel disabling the outdoor unit 1 from operating set no 38 disable outdoor unit 1 operation of setting mode 2 to off p.282
• Vrviii r 410a heat recovery 60hz 267 p.282
• Sius34 801a_b field setting p.282
• 1reduction of cooling heating selection time of bs units p.283
• 0prevention of small heating in non operating unit p.283
• Specifications 70 2 refrigerant circuit 84 3 operation flow chart 85 4 thermostat sensor in remote controller 87 p.284
• Part 4 indoor unit p.284
• Part 4 p.284
• Indoor unit p.284
• Drain pump control 91 p.284
• Control of electronic expansion valve 93 7 freeze prevention 94 8 heater control optional pc board krp1b is required 95 9 list of louver operations 96 10 hot start control in heating operation only 97 11 louver control for preventing ceiling dirt 98 12 field setting 99 p.284
• Specifications p.285
• Ceiling mounted cassette type multi flow p.285
• Sius34 801a_b specifications p.286
• Indoor unit 271 p.286
• Ceiling mounted cassette type multi flow p.286
• Available in april 2008 p.287
• Way ceiling mounted cassette unit 2 2 p.287
• Specifications sius34 801a_b p.287
• Indoor unit p.287
• Way ceiling mounted cassette unit 2 2 p.288
• Sius34 801a_b specifications p.288
• Indoor unit 273 p.288
• Specifications sius34 801a_b p.289
• Slim ceiling mounted duct type p.289
• Indoor unit p.289
• Slim ceiling mounted duct type p.290
• Sius34 801a_b specifications p.290
• Indoor unit 275 p.290
• Specifications sius34 801a_b p.291
• Indoor unit p.291
• Ceiling mounted built in type p.291
• Ceiling mounted built in type p.292
• Sius34 801a_b specifications p.292
• Indoor unit 277 p.292
• Specifications sius34 801a_b p.293
• Indoor unit p.293
• Ceiling mounted duct type p.293
• Sius34 801a_b specifications p.294
• Indoor unit 279 p.294
• Ceiling suspended type p.294
• Wall mounted type p.295
• Specifications sius34 801a_b p.295
• Indoor unit p.295
• Wall mounted type p.296
• Sius34 801a_b specifications p.296
• Indoor unit 281 p.296
• Indoor unit p.297
• Floor standing type p.297
• Specifications sius34 801a_b p.297
• Sius34 801a_b specifications p.298
• Indoor unit 283 p.298
• Concealed floor standing type p.298
• Refrigerant circuit p.299
• Fxfq fxzq fxdq fxsq fxmq fxhq fxaq fxlq fxnq p.299
• Turn on power supply p.300
• Operation flow chart p.300
• Led in remote controller turns on p.300
• 6 the fxcq fxfq fxkq and fxsq series have the drain pump as standard equipment p.300
• 1 if any malfunction occurs the relevant malfunction code will be displayed according to the malfunction code display of the remote controller 2 when the aux electric heater turns on the fan will stop after it conducts residual operation for 1 min 3 when the drain pump kit turns on the drain pump kit will stop after it conducts residual operation for a period of 5 min 4 if the evaporator inlet temperature is kept at not more than 23 f for a period of cumulative 10 min or not more than 30 f for a cumulative period of 40 min frost prevention operation will be conducted if the evaporator inlet temperature is kept at not less than 44 f for a consecutive period of 10 min the frost prevention operation will be reset 5 thermostat status p.300
• Operation flow chart sius34 801a_b p.301
• Microcomputer dry display p.301
• Indoor unit p.301
• Heating operation p.301
• Fan operation p.301
• Thermostat sensor in remote controller p.302
• Cooling p.302
• Heating p.303
• While in dry operation the thermostat control is conducted according to a return air temperature at the time of starting the dry operation p.304
• While in dry operation mode fans operate at l flow rate stops for a period of six minutes while the thermostat is off and then return to operation at l flow rate this control is used to prevent a rise in indoor temperature while in thermostat off mode p.304
• While in a single remote controller group control the return air sensor is only used from this control while in heating operation cassette mounted indoor units conduct the thermostat control by a value compensated by 3 f for the value detected with the body thermostat through field settings the thermostat differential setting can be changed from 1 f to 0 f p.304
• Vrv multi systems are set at factory to thermostat control mode using the remote controller while in normal thermostat differential control mode i e factory set mode the thermostat turns off when the system reaches a temperature of 1 f from the set temperature while in cooling operation or of 1 f from that while in heating operation p.304
• Thermostat control while in normal operation p.304
• Thermostat control in dry operation p.304
• Sius34 801a_b thermostat sensor in remote controller p.304
• Indoor unit 289 p.304
• Assuming that the return air temperature at the time of starting the dry operation is tro and the return air temperature in operation is tr p.304
• Heating thermostat off p.305
• Factory setting p.305
• Ex when automatic cooling temperature is set to 80 f p.305
• Cooling thermostat on cooling thermostat off p.305
• When the operation mode is set to auto on the remote controller the system will conduct the temperature control shown below furthermore setting changes of the differential value d f can be made according to information in the field settings with remote controller beginning page302 section p.305
• Thermostat sensor in remote controller sius34 801a_b p.305
• Thermostat control with operation mode set to auto p.305
• Set heating temperature a d f set cooling temperature a f p.305
• Indoor unit p.305
• Heating thermostat on p.305
• Drain pump control p.306
• When the float switch is tripped during heating operation p.307
• When the float switch is tripped and af is displayed on the remote controller p.307
• Control of electronic expansion valve p.308
• When the temperature detected by liquid pipe temperature thermistor r2t of the indoor unit heat exchanger drops too low the unit enters freeze prevention operation in accordance with the following conditions and is also set in accordance with the conditions given below when freeze prevention is activated the electronic expansion valve is closed the drain pump turns on and the fan tap is fixed to l air flow when the following conditions for stopping are satisfied it returns conditions for starting freeze prevention temperature is 30 f or less for total of 40 min or temperature is 23 f or less for total of 10 min conditions for stopping freeze prevention temperature is 44 f or more for 10 min continuously p.309
• Indoor unit p.309
• Freeze prevention sius34 801a_b p.309
• Freeze prevention by off cycle indoor unit p.309
• Freeze prevention p.309
• Conditions for starting when air flow direction is two way or three way conditions for starting temperature is 33 ºf or less for a total of 15 minutes or 32ºf or less for 1 minute continuously p.309
• Heater control optional pc board krp1b is required p.310
• Louvers operate as shown in table below p.311
• List of louver operations p.311
• 1 l or ll only on fxfq models p.311
• Hot start control in heating operation only p.312
• Louver control for preventing ceiling dirt p.313
• Field setting from remote controller p.314
• Field setting p.314
• Wireless remote controller indoor unit p.315
• Simplified remote controller p.316
• Setting contents and code no vrv indoor unit p.317
• Notes 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes cannot be checked except in the individual mode for those in parentheses 2 the mode numbers inside parentheses cannot be used by wireless remote controllers so they cannot be set individually setting changes also cannot be checked 3 marked are factory set 4 do not make settings other than those described above nothing is displayed for functions the indoor unit is not equipped with 5 88 may be displayed to indicate the remote controller is resetting when returning to the normal mode 6 if the setting mode to equipped the heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit p.317
• Indoor unit p.317
• Field setting sius34 801a_b p.317
• Applicable range of field setting p.318
• 1 static pressure selection p.318
• Sius34 801a_b field setting p.318
• Indoor unit 303 p.318
• Whether or not to display filter cleaning after operation of certain duration can be selected p.319
• When a ultra long life filter is installed the filter sign timer setting must be changed p.319
• The factory setting for the second code no is 01 and room temperature is controlled by the indoor unit suction air thermistor and remote controller thermistor when the second code no is set to 02 room temperature is controlled by the suction air thermistor when the second code no is set to 03 room temperature is controlled by the remote controller thermistor p.319
• Setting table p.319
• Select the thermistor to control room temperature p.319
• If switching the filter sign on time set as given in the table below set time p.319
• Detailed explanation of setting modes p.319
• 4 filter cleaning displayed or not displayed p.319
• 3 selection of thermistor p.319
• 2 ultra long life filter sign setting p.319
• 1 filter sign setting p.319
• 7 thermostat switching p.320
• 6 external on off input p.320
• 5 optional output switching p.320
• Using this setting operation output signal and abnormal output signal can be provided output signal is output between terminals k1 and k2 of customized wiring adapter an optional accessory p.320
• This setting is used to set air flow when heating thermostat is off when thermostat off air flow volume up mode is used careful consideration is required before deciding installation location during heating operation this setting takes precedence over 7 fan stop when thermostat is off p.320
• This input is used for on off operation and protection device input from the outside the input is performed from the t1 t1 terminal of the operation terminal block x1a in the electric component box p.320
• Setting table p.320
• Differential value during thermostat on off control can be changed for details refer to 4 thermostat control while in normal operation on page 289 p.320
• 8 air flow setting when heating thermostat is off p.320
• This setting makes it possible to change differential values for mode selection while in automatic operation mode p.321
• The automatic operation mode setting is made by the use of the operation mode selector button p.321
• Sets airflow to ll air flow when cooling thermostat is off p.321
• Make the following setting according to the ceiling height the setting position no is set to 01 at the factory in the case of fxaq fxhq p.321
• For the air conditioners with no setting for the auto restart after power failure reset function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or if the main power supply is turned off and then on again for air conditioners that do have this setting the units may start automatically after power failure reset or if the main power supply is turned on again and return to prior normal operation when the unit is set to enable auto restart function after power failure reset use the following cautions p.321
• Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again 2 during service work turning off the main power switch while the unit is in operation and turning on the switch again after the work is completed starts operation the fan rotates p.321
• 9 setting of operation mode to auto p.321
• 12 setting of normal air flow p.321
• 11 air flow when cooling thermostat is off p.321
• 10 auto restart after power failure reset p.321
• Some indoor unit models are not equipped with draft prevention upward function p.322
• Setting table p.322
• Set the p.322
• Make the following p.322
• In the case of fxfq36 p.322
• In the case of fxfq12 30 p.322
• Direction setting according to the respective purpose p.322
• Direction of indoor units as given in the following table set when optional air outlet blocking pad has been installed the second code no is factory set to 01 p.322
• 15 setting of the static pressure selection for fxdq model p.322
• 14 setting of air flow direction adjustment range p.322
• 13 air flow direction setting p.322
• Set to perform individual operation of heat reclaim ventilation using the remote controller central unit if the option is available p.323
• 19 individual setting of ventilation p.323
• 18 interlocked operation between humidifier and drain pump p.323
• 17 setting of direct duct connection p.323
• 16 humidification when heating thermostat is off p.323
• Used when fresh air intake kit equipped with fan is connected the indoor fan carries out residual operation for one minute after the thermostat is stopped to prevent air filter dust from scattering p.323
• Used to interlock the humidifier with the drain pump when water is drained out of the unit this setting is unnecessary p.323
• Setting to humidification setting turns on the humidifier if suction temperature is 20ºc or above and turns off the humidifier if suction temperature is 18ºc or below when the heating thermostat is off p.323
• Centralized control group no setting p.324
• Brc1d type p.324
• Brc7c type brc4c type brc7e type p.325
• Sius34 801a_b field setting p.326
• Indoor unit 311 p.326
• Group no setting example p.326
• Caution when turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display this is not an operational flaw p.326
• Setting of operation control mode from remote controller local setting p.327
• Contents of control modes p.327
• If operation by remote controller is available or not for turning on off controlling temperature or setting operation the mode is designated by the operation mode in the right hand column of the following table p.328
• How to select operation mode p.328
• Do not select timer operation possible by remote controller if not using a remote controller as it will not be functional 1 factory setting p.328
• Part 5 troubleshooting p.330
• Troubleshooting by indication on the remote controller 36 p.330
• Symptom based troubleshooting 18 2 troubleshooting by remote controller 21 p.330
• Troubleshooting op unified on off controller 53 p.331
• Troubleshooting op central remote controller 46 p.331
• Symptom based troubleshooting p.333
• Troubleshooting by remote controller p.336
• The inspection test button p.336
• The following modes can be selected by using the inspection test operation button on the remote control p.336
• Test operation mode p.336
• Normal mode p.336
• Local setting mode service mode p.336
• Inspection mode p.336
• Self diagnosis by wired remote controller p.337
• Explanation p.337
• Self diagnosis by wireless remote controller p.338
• In the case of brc7c type brc7e type brc4c type p.338
• The lower digit of the code changes as shown below when the up and down buttons are pressed p.339
• Troubleshooting by remote controller sius34 801a_b p.341
• Troubleshooting p.341
• Operating the inspection test button on the remote controller allows you to check the malfunction codes indoor unit model codes and outdoor unit model codes while in inspection mode p.341
• Inspection mode p.341
• A f h j l p l 6 3 p.341
• A a 1 a a 3 a 9 2 a a 5 a a a a 9 6 p.341
• 1 f c j p.341
• Service mode operation method p.342
• Remote controller service mode p.342
• How to enter the service mode p.342
• Test run mode p.344
• Remote controller self diagnosis function p.344
• Press the check test button 4 times p.344
• Normal operation mode p.344
• The system operates for malfunction codes indicated in black squares however be sure to check and repair p.346
• Troubleshooting by remote controller sius34 801a_b p.347
• Troubleshooting p.347
• To enter the monitor mode push the mode bs1 button when in setting mode 1 p.347
• Push the set bs2 button once to display second digit of malfunction code p.347
• Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location p.347
• Push the set bs2 button once to display malfunction location p.347
• Push the set bs2 button and set the led display to a setting item p.347
• Push the return bs3 button once to display first digit of malfunction code p.347
• Push the return bs3 button and switches to the initial status of monitor mode p.347
• Push the mode bs1 button and returns to setting mode 1 p.347
• Malfunction code p.347
• Detail description on next page p.347
• Troubleshooting 333 p.348
• Sius34 801a_b troubleshooting by remote controller p.348
• Push the mode bs1 button and returns to setting mode 1 p.349
• Detail description on next page p.349
• Troubleshooting by remote controller sius34 801a_b p.349
• Troubleshooting p.349
• To enter the monitor mode push the mode bs1 button when in setting mode 1 p.349
• Refer to page 106 254 for monitor mode p.349
• Push the set bs2 button once to display second digit of malfunction code p.349
• Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location p.349
• Push the set bs2 button once to display malfunction location p.349
• Push the set bs2 button and set the led display to a setting item p.349
• Push the return bs3 button once to display first digit of malfunction code p.349
• Push the return bs3 button and switches to the initial status of monitor mode p.349
• Troubleshooting 335 p.350
• Sius34 801a_b troubleshooting by remote controller p.350
• Method of malfunction detection p.351
• Malfunction decision conditions p.351
• Indoor unit error of external protection device p.351
• Applicable models p.351
• Troubleshooting by indication on the remote controller p.351
• Troubleshooting p.351
• Supposed causes p.351
• Remote controller display p.351
• Indoor unit pc board defect p.352
• Supposed causes p.353
• Remote controller display p.353
• Method of malfunction detection p.353
• Malfunction decision conditions p.353
• Indoor unit malfunction of drain level control system s1l p.353
• Applicable models p.353
• Troubleshooting 339 p.354
• Troubleshooting p.354
• Sius34 801a_b troubleshooting by indication on the remote controller p.354
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.354
• Applicable models p.355
• Supposed causes p.355
• Remote controller display p.355
• Method of malfunction detection p.355
• Malfunction decision conditions p.355
• Indoor unit fan motor m1f lock overload p.355
• Troubleshooting p.356
• Sius34 801a_b troubleshooting by indication on the remote controller p.356
• Replace the indoor unit pc board p.356
• Replace the fan motor no p.356
• Replace the fan motor p.356
• Remove the foreign matters p.356
• Properly connect the connector no p.356
• Is the resistance between the pins not less than the judgment criteria p.356
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.356
• Are there any foreign matters around the fan p.356
• 1 if any junction connector is provided between the connector x20a on the indoor unit pc board and the fan motor also check whether or not the junction connector is properly connected 2 all resistance measuring points and judgment criteria p.356
• Turn off the power supply and then wait for a period of 10 minutes p.356
• Troubleshooting 341 p.356
• Troubleshooting p.357
• Supposed causes p.357
• Remote controller display p.357
• No fan revolutions detected even at maximum voltage p.357
• Method of malfunction detection p.357
• Malfunction decision conditions p.357
• Indoor unit malfunction of indoor unit fan motor p.357
• Fxhq fxdq p.357
• Faulty indoor fan motor broken wires faulty contact p.357
• Detected by no fan motor revolutions p.357
• Applicable models p.357
• Individual power supply for the fan turns off p.358
• Faulty power supply for the indoor unit fan motor clogged drain piping actuation of the indoor unit safety device faulty contact in the fan wiring circuit p.358
• Applicable models p.358
• Troubleshooting p.358
• Supposed causes p.358
• Remote controller display p.358
• Method of malfunction detection p.358
• Malfunction decision conditions p.358
• Indoor unit overload overcurrent lock of indoor unit fan motor p.358
• Individual power supply for the indoor unit fan does not turn on while in operation p.358
• Supposed causes p.359
• Remote controller display p.359
• Method of malfunction detection p.359
• Malfunction decision conditions p.359
• Indoor unit malfunction of louver motor m1s p.359
• Applicable models p.359
• Troubleshooting p.360
• Sius34 801a_b troubleshooting by indication on the remote controller p.360
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.360
• Troubleshooting 345 p.360
• Supposed causes p.361
• Remote controller display p.361
• Method of malfunction detection p.361
• Malfunction decision conditions p.361
• Indoor unit electronic expansion valve malfunction dust clogging p.361
• Applicable models p.361
• Troubleshooting 347 p.362
• Troubleshooting p.362
• Sius34 801a_b troubleshooting by indication on the remote controller p.362
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.362
• Indoor unit malfunction of electronic expansion valve coil p.363
• Troubleshooting 349 p.364
• Sius34 801a_b troubleshooting by indication on the remote controller p.364
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.364
• Applicable models p.365
• When the float switch changes from on to off while the compressor is in non operation error code is displayed but the system operates continuously p.365
• Water leakage is detected based on float switch on off operation while the compressor is in non operation p.365
• Troubleshooting p.365
• Supposed causes p.365
• Remote controller display p.365
• Method of malfunction detection p.365
• Malfunction decision conditions p.365
• Indoor unit drain level above limit p.365
• Humidifier unit optional accessory leaking defect of drain pipe upward slope etc defect of indoor unit pc board p.365
• Fxfq fxsq fxmq fxdq p.365
• Malfunction decision conditions p.367
• M temperature of the heat exchanger thermistor p.367
• Indoor unit malfunction of thermistor r2t for heat exchanger p.367
• Defect of thermistor r2t for liquid pipe defect of indoor unit pc board p.367
• Applicable models p.367
• All indoor unit models p.367
• When the heat exchanger thermistor becomes disconnected or shorted while the unit is running p.367
• Troubleshooting p.367
• Supposed causes p.367
• Remote controller display p.367
• Refer to the thermistor resistance temperature characteristics table on page 523 p.367
• Method of malfunction detection p.367
• Temperature of the gas pipe thermistor p.368
• Supposed causes p.368
• Remote controller display p.368
• Refer to the thermistor resistance temperature characteristics table on page 529 p.368
• Method of malfunction detection p.368
• Malfunction decision conditions p.368
• Indoor unit malfunction of thermistor r3t for gas pipes p.368
• Defect of indoor unit thermistor r3t for gas pipe defect of indoor unit pc board p.368
• Applicable models p.368
• All indoor unit models p.368
• When the gas pipe thermistor becomes disconnected or shorted while the unit is running p.368
• Troubleshooting p.368
• When the suction air temperature thermistor becomes disconnected or shorted while the unit is running p.369
• Troubleshooting p.369
• Supposed causes p.369
• Remote controller display p.369
• Refer to the thermistor resistance temperature characteristics table on page 529 p.369
• Method of malfunction detection p.369
• Malfunction detection is carried out by temperature detected by suction air temperature thermistor temperature detected by the suction air temperature thermistor p.369
• Malfunction decision conditions p.369
• Indoor unit malfunction of thermistor r1t for suction air p.369
• Defect of indoor unit thermistor r1t for air inlet defect of indoor unit pc board p.369
• Applicable models p.369
• Aii indoor unit models p.369
• Indoor unit malfunction of thermostat sensor in remote controller p.370
• Applicable models p.370
• Troubleshooting p.370
• Supposed causes p.370
• Remote controller display p.370
• Method of malfunction detection p.370
• Malfunction decision conditions p.370
• Outdoor unit pc board defect p.371
• Outdoor unit detection of ground leakage by leak detection pc board ass y p.372
• Troubleshooting by indication on the remote controller sius34 801a_b p.373
• Troubleshooting p.373
• Normal p.373
• Supposed causes p.374
• Remote controller display p.374
• Outdoor unit actuation of high pressure switch p.374
• Method of malfunction detection p.374
• Malfunction decision conditions p.374
• Applicable models p.374
• Troubleshooting by indication on the remote controller sius34 801a_b p.375
• Troubleshooting p.375
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.375
• 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on p533 2 make measurement of voltage of the pressure sensor p.375
• Outdoor unit actuation of low pressure sensor p.376
• Troubleshooting by indication on the remote controller sius34 801a_b p.377
• Troubleshooting p.377
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.377
• 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on p533 2 make measurement of voltage of the pressure sensor p.377
• Supposed causes p.378
• Remote controller display p.378
• Outdoor unit inverter compressor motor lock p.378
• Method of malfunction detection p.378
• Malfunction decision conditions p.378
• Applicable models p.378
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.379
• Troubleshooting by indication on the remote controller sius34 801a_b p.379
• Troubleshooting p.379
• Supposed causes p.380
• Remote controller display p.380
• Outdoor unit std compressor motor overcurrent lock p.380
• Method of malfunction detection p.380
• Malfunction decision conditions p.380
• Applicable models p.380
• Troubleshooting by indication on the remote controller sius34 801a_b p.381
• Troubleshooting p.381
• Note 1 one of the possible factors may be chattering due to rough mgs contact 2 abnormal case the current sensor value is 0 during std compressor operation the current sensor value is more than 15 a during std compressor stop p.381
• Remote controller display p.382
• Outdoor unit malfunction of outdoor unit fan motor p.382
• Method of malfunction detection p.382
• Malfunction decision conditions p.382
• Applicable models p.382
• Supposed causes p.382
• Troubleshooting by indication on the remote controller sius34 801a_b p.383
• Troubleshooting p.383
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.383
• Troubleshooting 369 p.384
• Troubleshooting p.384
• Sius34 801a_b troubleshooting by indication on the remote controller p.384
• Outdoor unit malfunction of moving part of electronic expansion valve y1e y5e p.385
• Troubleshooting 371 p.386
• Troubleshooting p.386
• Sius34 801a_b troubleshooting by indication on the remote controller p.386
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.386
• Outdoor unit abnormal discharge pipe temperature p.387
• Sius34 801a_b troubleshooting by indication on the remote controller p.388
• Refer to thermistor resistance temperature characteristics table on p529 p.388
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.388
• Troubleshooting 373 p.388
• Troubleshooting p.388
• Troubleshooting p.389
• Supposed causes p.389
• Remote controller display p.389
• Outdoor unit refrigerant overcharged p.389
• Method of malfunction detection p.389
• Malfunction decision conditions p.389
• Applicable models p.389
• Outdoor unit abnormal outdoor fan motor signal p.390
• Troubleshooting by indication on the remote controller sius34 801a_b p.391
• Troubleshooting p.391
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.391
• Malfunction decision conditions p.392
• Defective thermistor connection defect of thermistor r1t for outdoor air defect of outdoor unit pc board a1p p.392
• Applicable models p.392
• When the outside air temperature thermistor has short circuit or open circuit p.392
• Troubleshooting p.392
• Temperature detected by the outdoor air thermistor p.392
• Supposed causes p.392
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.392
• Remote controller display p.392
• Refer to the thermistor resistance temperature characteristics table on page 523 p.392
• Outdoor unit malfunction of thermistor r1t for outdoor air p.392
• Method of malfunction detection p.392
• Outdoor unit current sensor malfunction p.393
• Troubleshooting 379 p.394
• Troubleshooting p.394
• Sius34 801a_b troubleshooting by indication on the remote controller p.394
• Malfunction decision conditions p.395
• Defect of thermistor r31t r32t for outdoor unit discharge pipe defect of outdoor unit pc board a1p defect of thermistor connection p.395
• Applicable models p.395
• When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected p.395
• Troubleshooting p.395
• The alarm indicator is displayed when the fan is being used also p.395
• Temperature detected by discharge pipe temperature thermistor p.395
• Supposed causes p.395
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.395
• Remote controller display p.395
• Refer to the thermistor resistance temperature characteristics table on page 523 p.395
• Outdoor unit malfunction of discharge pipe thermistor r31 32t p.395
• Method of malfunction detection p.395
• Outdoor unit malfunction of temperature sensor for heat exchanger gas r2t or r11t p.396
• Method of malfunction detection p.396
• Malfunction decision conditions p.396
• In operation when a thermistor is disconnected or short circuits p.396
• Defective connection of thermistor defective thermistor defective outdoor unit pc board p.396
• Applicable models p.396
• Troubleshooting p.396
• Temperature detected by each thermistor p.396
• Supposed causes p.396
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.396
• Remote controller display p.396
• Refer to the thermistor resistance temperature characteristics table on page 523 p.396
• Temperature detected by the suction pipe temperature thermistor p.397
• Supposed causes p.397
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.397
• Remote controller display p.397
• Refer to the thermistor resistance temperature characteristics table on page 523 p.397
• Outdoor unit malfunction of thermistor r8t or r10t for suction pipe p.397
• Method of malfunction detection p.397
• Malfunction decision conditions p.397
• Defect of thermistor r8t or r10t for outdoor unit suction pipe defect of outdoor unit pc board a1p defect of thermistor connection p.397
• Applicable models p.397
• When a short circuit or an open circuit in the suction pipe temperature thermistor is detected p.397
• Troubleshooting p.397
• When a short circuit or an open circuit in the heat exchange thermistor is detected p.398
• Troubleshooting p.398
• Temperature detected by the heat exchanger thermistor p.398
• Supposed causes p.398
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.398
• Remote controller display p.398
• Refer to the thermistor resistance temperature characteristics table on page 523 p.398
• Outdoor unit malfunction of thermistor r4t or r12t for outdoor unit heat exchanger p.398
• Method of malfunction detection p.398
• Malfunction decision conditions p.398
• Defect of thermistor r4t or r12t for outdoor unit coil defect of outdoor unit pc board a1p defect of thermistor connection p.398
• Applicable models p.398
• Faulty liquid pipe thermistor 1 r6t r9t or r14t faulty outdoor unit pc board defect of thermistor connection p.399
• Applicable models p.399
• When the liquid pipe thermistor is short circuited or open p.399
• Troubleshooting p.399
• Supposed causes p.399
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.399
• Remote controller display p.399
• Refer to thermistor resistance temperature characteristics table on p523 p.399
• Outdoor unit malfunction of liquid pipe thermistor 1 r6t r9t or r14t p.399
• Method of malfunction detection p.399
• Malfunction is detected according to the temperature detected by liquid pipe thermistor p.399
• Malfunction decision conditions p.399
• Outdoor unit malfunction of liquid pipe thermistor 2 r7t or r15t p.400
• Method of malfunction detection p.400
• Malfunction is detected according to the temperature detected by liquid pipe thermistor p.400
• Malfunction decision conditions p.400
• Faulty liquid pipe thermistor 2 r7t or r15t faulty outdoor unit pc board defect of thermistor connection p.400
• Applicable models p.400
• When the liquid pipe thermistor is short circuited or open p.400
• Troubleshooting p.400
• Supposed causes p.400
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.400
• Remote controller display p.400
• Refer to thermistor resistance temperature characteristics table on p523 p.400
• Supposed causes p.401
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.401
• Remote controller display p.401
• Refer to thermistor resistance temperature characteristics table on p523 p.401
• Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t or r13t p.401
• Method of malfunction detection p.401
• Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor p.401
• Malfunction decision conditions p.401
• Faulty subcooling heat exchanger gas pipe thermistor r5t or r13t faulty outdoor unit pc board p.401
• Applicable models p.401
• When the subcooling heat exchanger gas pipe thermistor is short circuited or open p.401
• Troubleshooting p.401
• Outdoor unit malfunction of high pressure sensor p.402
• Troubleshooting by indication on the remote controller sius34 801a_b p.403
• Troubleshooting p.403
• Malfunction code p.403
• Ja high pressure sensor s1nph p.403
• Electric symbol pressure sensor subject to malfunction code p.403
• 2 voltage measurement point p.403
• 2 refer to pressure sensor pressure voltage characteristics table on p525 p.403
• 1 pressure sensor subject to malfunction code p.403
• Outdoor unit malfunction of low pressure sensor p.404
• Troubleshooting p.405
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.405
• 2 refer to pressure sensor pressure voltage characteristics table on p525 p.405
• 1 voltage measurement point p.405
• Troubleshooting by indication on the remote controller sius34 801a_b p.405
• Supposed causes p.406
• Remote controller display p.406
• Outdoor unit defective inverter pc board p.406
• Method of malfunction detection p.406
• Malfunction decision conditions p.406
• Applicable models p.406
• Troubleshooting by indication on the remote controller sius34 801a_b p.407
• Troubleshooting p.407
• 1 list of inverter pc boards p.407
• Outdoor unit malfunction of inverter radiating fin temperature rise p.408
• Troubleshooting by indication on the remote controller sius34 801a_b p.409
• Troubleshooting p.409
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.409
• Outdoor unit momentary overcurrent of inverter compressor p.411
• Compressor inspection p.412
• Troubleshooting p.412
• Supposed causes p.413
• Remote controller display p.413
• Outdoor unit momentary overcurrent of inverter compressor p.413
• Method of malfunction detection p.413
• Malfunction decision conditions p.413
• Applicable models p.413
• Troubleshooting p.414
• Output current check p.414
• Supposed causes p.415
• Remote controller display p.415
• Outdoor unit inverter compressor starting failure p.415
• Method of malfunction detection p.415
• Malfunction decision conditions p.415
• Applicable models p.415
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.416
• Troubleshooting 401 p.416
• Troubleshooting p.416
• Sius34 801a_b troubleshooting by indication on the remote controller p.416
• Troubleshooting p.417
• Supposed causes p.418
• Remote controller display p.418
• Outdoor unit malfunction of transmission between inverter and control pc board p.418
• Method of malfunction detection p.418
• Malfunction decision conditions p.418
• Applicable models p.418
• Troubleshooting by indication on the remote controller sius34 801a_b p.419
• Troubleshooting p.419
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.419
• 1 list of inverter pc boards p.419
• Troubleshooting p.420
• Sius34 801a_b troubleshooting by indication on the remote controller p.420
• Troubleshooting 405 p.420
• Supposed causes p.421
• Remote controller display p.421
• Outdoor unit inverter over ripple protection p.421
• Method of malfunction detection p.421
• Malfunction decision conditions p.421
• Applicable models p.421
• Troubleshooting 407 p.422
• Troubleshooting p.422
• Sius34 801a_b troubleshooting by indication on the remote controller p.422
• Remote controller display p.423
• Outdoor unit malfunction of inverter radiating fin temperature rise sensor p.423
• Method of malfunction detection p.423
• Malfunction decision conditions p.423
• Defect of radiator fin temperature sensor defect of inverter pc board faulty inverter compressor faulty fan motor p.423
• Applicable models p.423
• When the resistance value of thermistor becomes a value equivalent to open or short circuited status malfunction is not decided while the unit operation is continued p4 will be displayed by pressing the inspection button p.423
• Troubleshooting p.423
• Supposed causes p.423
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.423
• Resistance of radiation fin thermistor is detected when the compressor is not operating p.423
• Refer to thermistor resistance temperature characteristics table on p523 p.424
• Inverter pc board for compressor p.424
• Outdoor unit faulty field setting after replacing main pc board or faulty combination of pc board p.425
• Troubleshooting 411 p.426
• Troubleshooting p.426
• Sius34 801a_b troubleshooting by indication on the remote controller p.426
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.426
• 1 list of inverter pc boards p.426
• Method of malfunction detection p.427
• Malfunction decision conditions p.427
• Applicable models p.427
• Supposed causes p.427
• Remote controller display p.427
• Outdoor unit gas shortage alert p.427
• Troubleshooting 413 p.428
• Troubleshooting p.428
• Sius34 801a_b troubleshooting by indication on the remote controller p.428
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.428
• The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged p.429
• Supposed causes p.429
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.429
• Reverse phase open phase p.429
• Remote controller display p.429
• Power supply reverse phase power supply open phase defect of outdoor pc board a1p p.429
• Method of malfunction detection p.429
• Malfunction decision conditions p.429
• Applicable models p.429
• When a significant phase difference is made between phases p.429
• Troubleshooting p.429
• Supposed causes p.430
• Remote controller display p.430
• Outdoor unit power supply insufficient or instantaneous failure p.430
• Method of malfunction detection p.430
• Malfunction decision conditions p.430
• Applicable models p.430
• Troubleshooting by indication on the remote controller sius34 801a_b p.431
• Troubleshooting p.431
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.431
• Troubleshooting 417 p.432
• Troubleshooting p.432
• Sius34 801a_b troubleshooting by indication on the remote controller p.432
• Check operation is executed or not p.433
• Applicable models p.433
• Troubleshooting p.433
• Supposed causes p.433
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju p.433
• Remote controller display p.433
• Outdoor unit check operation not executed p.433
• Method of malfunction detection p.433
• Malfunction is decided when the unit starts operation without check operation p.433
• Malfunction decision conditions p.433
• Check operation is not executed p.433
• Supposed causes p.434
• Remote controller display p.434
• Method of malfunction detection p.434
• Malfunction of transmission between indoor units p.434
• Malfunction decision conditions p.434
• Applicable models p.434
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.435
• Troubleshooting by indication on the remote controller sius34 801a_b p.435
• Troubleshooting p.435
• Caution p.435
• Troubleshooting 421 p.436
• Sius34 801a_b troubleshooting by indication on the remote controller p.436
• Caution p.436
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.436
• 1 2 see the chart and footnote on p422 3 4 see the chart and footnote on p423 p.436
• Troubleshooting by indication on the remote controller sius34 801a_b p.437
• Troubleshooting p.437
• Caution p.437
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.437
• 2 refer to pressure sensor pressure voltage characteristics table on p525 p.437
• 1 voltage measurement point p.437
• 4 refer to pressure sensor pressure voltage characteristics table on p525 p.438
• 3 voltage measurement point p.438
• Troubleshooting 423 p.438
• Sius34 801a_b troubleshooting by indication on the remote controller p.438
• Caution p.438
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.438
• Troubleshooting p.439
• Supposed causes p.439
• Remote controller display p.439
• Normal transmission does not continue for specified period p.439
• Method of malfunction detection p.439
• Malfunction of indoor unit remote controller transmission connection of two main remote controllers when using 2 remote controllers defect of indoor unit pc board defect of remote controller pc board malfunction of transmission caused by noise p.439
• Malfunction decision conditions p.439
• Indoor unit malfunction of transmission between remote controller and indoor unit p.439
• In case of controlling with 2 remote controller check the system using microcomputer is signal transmission between indoor unit and remote controller main and sub is normal p.439
• Applicable models p.439
• All models of indoor units p.439
• Applicable models p.440
• Supposed causes p.440
• Remote controller display p.440
• Outdoor unit transmission failure across outdoor units p.440
• Method of malfunction detection p.440
• Malfunction decision conditions p.440
• Troubleshooting by indication on the remote controller sius34 801a_b p.441
• Troubleshooting p.441
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.441
• Troubleshooting 427 p.442
• Troubleshooting p.442
• Sius34 801a_b troubleshooting by indication on the remote controller p.442
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.442
• Troubleshooting by indication on the remote controller sius34 801a_b p.443
• Troubleshooting p.443
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.443
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.444
• Troubleshooting 429 p.444
• Troubleshooting p.444
• Sius34 801a_b troubleshooting by indication on the remote controller p.444
• Troubleshooting by indication on the remote controller sius34 801a_b p.445
• Troubleshooting p.445
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.445
• Supposed causes p.446
• Remote controller display p.446
• Normal transmission does not continue for specified period p.446
• Method of malfunction detection p.446
• Malfunction of transmission between main and sub remote controller connection between sub remote controllers defect of remote controller pc board p.446
• Malfunction decision conditions p.446
• Indoor unit malfunction of transmission between main and sub remote controllers p.446
• In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal p.446
• Applicable models p.446
• All models of indoor units p.446
• Troubleshooting p.446
• Troubleshooting p.447
• Supposed causes p.447
• Remote controller display p.447
• Method of malfunction detection p.447
• Malfunction decision conditions p.447
• Indoor unit malfunction of transmission between indoor and outdoor units in the same system p.447
• Applicable models p.447
• Supposed causes p.448
• Remote controller display p.448
• Method of malfunction detection p.448
• Malfunction decision conditions p.448
• Improper combination of indoor and outdoor units indoor units and remote controller p.448
• Applicable models p.448
• Troubleshooting p.449
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.449
• Troubleshooting by indication on the remote controller sius34 801a_b p.449
• Troubleshooting 435 p.450
• Troubleshooting p.450
• Sius34 801a_b troubleshooting by indication on the remote controller p.450
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.450
• Troubleshooting by indication on the remote controller sius34 801a_b p.451
• Troubleshooting p.451
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.451
• Troubleshooting 437 p.452
• Troubleshooting p.452
• Sius34 801a_b troubleshooting by indication on the remote controller p.452
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.452
• Troubleshooting by indication on the remote controller sius34 801a_b p.453
• Troubleshooting p.453
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.453
• Applicable models p.455
• Supposed causes p.455
• Remote controller display p.455
• Method of malfunction detection p.455
• Malfunction of transmission between centralized controller and indoor unit p.455
• Malfunction decision conditions p.455
• Troubleshooting 441 p.456
• Troubleshooting p.456
• Sius34 801a_b troubleshooting by indication on the remote controller p.456
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.456
• Troubleshooting by indication on the remote controller sius34 801a_b p.457
• Troubleshooting p.457
• Method of malfunction detection p.458
• Malfunction decision conditions p.458
• Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units failure to execute check operation defect of indoor unit pc board stop valve is left in closed p.458
• Applicable models p.458
• All models of indoor units rxyq72p 240pydn ptju reyq72p 240pydn ptju p.458
• Troubleshooting p.458
• The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation p.458
• System is not set yet p.458
• Supposed causes p.458
• Remote controller display p.458
• On check operation the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature p.458
• Note wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour p.458
• Malfunction of system refrigerant system address undefined p.459
• Troubleshooting 445 p.460
• Troubleshooting p.460
• Sius34 801a_b troubleshooting by indication on the remote controller p.460
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.460
• Troubleshooting op central remote controller 4 p.461
• Troubleshooting op central remote controller p.461
• Pc board defect p.461
• Malfunction of transmission between optional controllers for centralized control p.462
• Troubleshooting op central remote controller sius34 801a_b p.463
• Troubleshooting p.463
• Supposed causes p.464
• Remote controller display p.464
• Method of malfunction detection p.464
• Malfunction decision conditions p.464
• Improper combination of optional controllers for centralized control p.464
• Applicable models p.464
• Troubleshooting op central remote controller sius34 801a_b p.465
• Troubleshooting p.465
• Address duplication improper setting p.466
• Troubleshooting op central remote controller sius34 801a_b p.467
• Troubleshooting p.467
• Method of malfunction detection p.468
• Malfunction decision conditions p.468
• Applicable models p.468
• Troubleshooting op unified on off controller 5 operation lamp blinks p.468
• Troubleshooting op unified on off controller p.468
• Supposed causes p.468
• Remote controller display p.468
• Troubleshooting op unified on off controller sius34 801a_b p.469
• Troubleshooting p.469
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.469
• Supposed causes p.470
• Remote controller display p.470
• Method of malfunction detection p.470
• Malfunction decision conditions p.470
• Display under centralized control blinks repeats single blink p.470
• Applicable models p.470
• Troubleshooting op unified on off controller sius34 801a_b p.471
• Troubleshooting p.471
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.471
• Troubleshooting 457 p.472
• Sius34 801a_b troubleshooting op unified on off controller p.472
• When no central control addresses are set to indoor units when no indoor units are connected within the control range p.473
• Unified on off controller p.473
• Under centralized control repeats double blink p.473
• Troubleshooting op unified on off controller sius34 801a_b p.473
• Troubleshooting p.473
• Supposed causes p.473
• Remote controller display p.473
• Method of malfunction detection p.473
• Malfunction decision conditions p.473
• Display under centralized control blinks repeats double blink p.473
• Detect the malfunction according to diii net transmission data p.473
• Central control address group no is not set for indoor unit improper control range setting switch improper wiring of transmission wiring p.473
• Applicable models p.473
• 1 turn off the power supply 2 while disconnected measure the resistance between vcc and each phase of u v w and gnd and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 to use a multiple meter for measurement connect the probe of negative pole to vcc and that of positive pole to gnd p.474
• Troubleshooting 459 p.474
• Sius34 801a_b troubleshooting op unified on off controller p.474
• Check on connector of fan motor power supply cable 1 turn off the power supply while disconnected measure the resistance between phases u v w at the motor side connectors 3 conductor wire to check that the values are balanced and that there is no short circuiting p.474
• Check 2 p.474
• Check 1 p.474
• Troubleshooting op unified on off controller sius34 801a_b p.475
• Troubleshooting p.475
• Identify the defective points referring to the failure factor analysis fta as follows p.475
• Check 3 check the factors of overheat operation p.475
• U v w n3 p.476
• Troubleshooting 461 p.476
• Sius34 801a_b troubleshooting op unified on off controller p.476
• Preparation p.476
• Point of measurement and judgment criteria p.476
• Pc board and circuit diagram p.476
• Check 4 power transistor check p.476
• Troubleshooting op unified on off controller sius34 801a_b p.477
• Troubleshooting p.477
• Referring to the fault tree analysis fta shown below probe the faulty points p.477
• Check 5 check for causes of rise in high pressure p.477
• Troubleshooting 463 p.478
• Sius34 801a_b troubleshooting op unified on off controller p.478
• Referring to the fault tree analysis fta shown below probe the faulty points p.478
• Check 6 check for causes of drop in low pressure p.478
• Check 7 broken wire check of the connecting wires p.479
• Pattern p.480
• Intelligent touch controller p.480
• Check 8 master unit central connector setting table p.480
• Central equipment connection pattern setting of master unit central setting connector 2 p.480
• 1 unit provided p.480
• 1 unit not provided p.480
• 1 unit 1 unit 1 provided not provided p.480
• Unit not provided p.480
• Troubleshooting 465 p.480
• The master unit central setting connector cn1 x1a is mounted at the factory to independently use a single unit of the intelligent touch controller or a single unit of the central remote controller do not dismount the master unit central setting connector i e use the connector with the factory setting unchanged to independently use the schedule timer insert an independent use setting connector no independent use setting connector has been mounted at the factory insert the connector which is attached to the casing of the main unit into the pc board cn1 x1a independent use connector master unit central setting connector to use two or more central equipment in combination make settings according to the table shown below p.480
• Sius34 801a_b troubleshooting op unified on off controller p.480
• Troubleshooting op unified on off controller sius34 801a_b p.481
• Troubleshooting p.481
• Combination of intelligent touch controller and central remote controller p.481
• Check 9 master slave unit setting table p.481
• Faulty indoor unit liquid pipe thermistor p.482
• Faulty indoor unit gas pipe thermistor p.482
• Faulty fan motor p.482
• Faulty crankcase heater p.482
• Dirty filter p.482
• Dirty evaporator p.482
• Check 10 check for causes of wet operation p.482
• Troubleshooting 467 p.482
• 1 superheated degree control in cooling operation is exercised with the indoor unit motorized valve 2 superheated degree control in heating operation is exercised with the outdoor unit motorized valve ev1 refer to information on p47 195 3 guideline of superheated degree to judge as wet operation suction gas superheated degree not more than 5 f discharge gas superheated degree not more than 27 f except immediately after compressor starts up or is running under drooping control use the values shown above as a guideline even if the superheated degree falls in the range the compressor may be normal depending on other conditions p.482
• Sius34 801a_b troubleshooting op unified on off controller p.482
• Refrigerant accumulation p.482
• Referring to the fault tree analysis fta shown below identify faulty points p.482
• Overcharge of refrigerant p.482
• Obstacles p.482
• Including faulty capacity setting p.482
• Faulty valve coil p.482
• Faulty valve body p.482
• Troubleshooting op unified on off controller sius34 801a_b p.483
• Troubleshooting p.483
• In case of vrv systems the only way to judge as the overcharge of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control as information for making a judgment refer to information provided below p.483
• Heating p.483
• Diagnosis of overcharge of refrigerant 1 high pressure rises consequently overload control is exercised to cause scant cooling capacity 2 the superheated degree of suction gas lowers or the wet operation is performed consequently the compressor becomes lower in discharge pipe temperature despite of pressure loads 3 the subcooled degree of condensate rises consequently in heating operation the temperature of outlet air passing through the subcooled section becomes lower p.483
• Cooling p.483
• Check 11 check for overcharge of refrigerant p.483
• Troubleshooting 469 p.484
• Sius34 801a_b troubleshooting op unified on off controller p.484
• In case of vrv systems the only way to judge as the shortage of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control as information for making a judgment refer to information provided below p.484
• Heating p.484
• Diagnosis of shortage of refrigerant 1 the superheated degree of suction gas rises consequently the compressor discharge gas temperature becomes higher 2 the superheated degree of suction gas rises consequently the electronic expansion valve opens 3 low pressure drops to cause the unit not to demonstrate cooling capacity heating capacity p.484
• Cooling p.484
• Check 12 check for shortage of refrigerant p.484
• Check 13 vacuuming and dehydration procedure p.485
• Troubleshooting 471 p.486
• Sius34 801a_b troubleshooting op unified on off controller p.486
• Check 14 list of inverter related malfunction codes p.486
• Max control p.487
• Malfunction codes related to compressor current p.487
• Heavy current part power transmission etc p.487
• Current p.487
• Compressor overcurrent electronic thermal 1 p.487
• Weak current part p.487
• Troubleshooting op unified on off controller sius34 801a_b p.487
• Troubleshooting p.487
• P4 l1 l4 u2 p1 pj e5 l9 p.487
• Wiring diagrams for reference 87 p.488
• Thermistor resistance temperature characteristics 23 7 pressure sensor 25 8 method of checking the inverter s power transistors and diode modules 26 9 example of connection 29 p.488
• Piping installation point 20 p.488
• Piping diagrams 74 p.488
• Part 6 appendix p.488
• Part 6 p.488
• Option list 18 p.488
• List of electrical and functional parts 10 p.488
• Appendix p.488
• Piping diagrams p.489
• Outdoor unit p.489
• Heat pump 460v p.489
• Rxyq72 96 120pydn p.489
• Heat pump 230v rxyq72 96 120ptju p.490
• Heat pump 230v rxyq144ptju p.491
• Reyq72 96 120pydn p.492
• Heat recovery 460v p.492
• Heat recovery 460v remq72pydn p.493
• Heat recovery 460v remq96 120pydn p.494
• Heat recovery 230v reyq72 96 120ptju p.495
• Heat recovery 230v reyq144ptju p.496
• Heat recovery 230v remq72ptju p.497
• Heat recovery 230v remq96 120ptju p.498
• Liquid piping connection port p.499
• Indoor unit p.499
• Heat exchanger gas piping connection port p.499
• Fxfq 12m 18m 24m 30m 36mvju fxzq 07m 09m 12m 18m7vju fxsq 12m 18m 24m 30m 36m 48mvju fxmq 30m 36m 48mvju fxhq 12m 24m 36mvju fxaq 07m 09m 12m 18m 24mvju fxlq 12m 18m 24mvju fxnq 12m 18m 24mvju p.499
• Electronic expansion valve filter filter p.499
• R1t thermistor for return air temperature r2t thermistor for liquid line temperature r3t thermistor for gas line temperature p.499
• Refrigerant pipe connection port diameters p.500
• Bs unit p.501
• Z7c n 5 p.502
• Z3c n 5 p.502
• Wiring diagrams for reference p.502
• Terminal of m1c m2c p.502
• T t t t t p.502
• Sius34 801a_b wiring diagrams for reference p.502
• Red wht blk p.502
• Outdoor unit p.502
• Indoor f1 f2 outdoor f1 f2 outdoor q1 q2 p.502
• Heat pump 460v rxyq72 96 120pydn p.502
• Blk wht p.502
• Appendix 487 p.502
• Appendix p.503
• Wiring diagrams for reference sius34 801a_b p.503
• Heat pump 230 vrxyq72 96 120ptju p.503
• Sius34 801a_b wiring diagrams for reference p.504
• Heat pump 230v rxyq144ptju p.504
• D060077c p.504
• Appendix 489 p.504
• Wiring diagrams for reference sius34 801a_b p.505
• Notes 1 this wiring diagram is applied only to the outdoor unit 2 field wiring 3 terminal strip connector terminal protective ground screw 4 when using the optional adaptor refer to the installation manual of the optional adaptor 5 for connection wiring to indoor outdoor transmission f1 f2 outdoor outdoor transmission f1 f2 outdoor multi transmission q1 q2 refer to the installation manual 6 how to use bs1 5 refer to service precaution label on electrical components box cover 7 when operating don t shortcircuit the protection device s1 2ph 8 symbols indicate colors of each parts as shown below is connector color for printed circuit board is connector color for component is identification color for component lead wire 9 colors blk black red red blu blue wht white p.505
• Layout of m1c m2c m1f m2f p.505
• Heat recovery 460v reyq72 96 120pydn p.505
• D057839g p.505
• Appendix p.505
• El compo box 2 p.506
• El compo box 1 p.506
• D058613d p.506
• Appendix 491 p.506
• Sius34 801a_b wiring diagrams for reference p.506
• Notes 1 this wiring diagram is applied only to the outdoor unit 2 field wiring 3 terminal strip connector terminal protective earth screw 4 when using the optional adaptor refer to the installation manual of the optional adaptor 5 for connection wiring to indoor outdoor transmission f1 f2 outdoor outdoor transmission f1 f2 outdoor multi transmission q1 q2 refer to the installation manual 6 how to use bs1 5 refer to service precaution label on el compo box cover 7 when operating don t shortcircuit the protection device s1ph s2ph 8 colors blk black red red blu blue wht white grn green p.506
• Layout of m1c m1f p.506
• Heat recovery 460v remq72pydn p.506
• Ground screw p.506
• Electrical components box p.506
• Note 5 p.507
• Layout of m1c m2c m1f p.507
• L1 l2 l3 p.507
• Heat recovery 460v remq96 120pydn p.507
• Electrical components box 2 p.507
• Electrical components box p.507
• El compo box 1 p.507
• Casing p.507
• Appendix p.507
• Z8c n 5 p.507
• 460v 60hz p.507
• Wiring diagrams for reference sius34 801a_b p.507
• This wiring diagram is applied only to the outdoor unit 2 field wiring 3 terminal strip connector terminal protective ground screw 4 when using the optional adaptor refer to the installation manual of the optional adaptor 5 for connection wiring to indoor outdoor transmission f1 f2 outdoor outdoor transmission f1 f2 outdoor multi transmission q1 q2 refer to the installation manual 6 how to use bs1 5 refer to service precaution label on electrical components box cover 7 when operating don t shortcircuit the protection device s1ph s2ph 8 colors blk black red red blu blue wht white grn green p.507
• T2a n 1 p.507
• Red wht blk p.507
• Power supply p.507
• Output 230v p.507
• Sius34 801a_b wiring diagrams for reference p.508
• Heat recovery 230v reyq72 96 120ptju p.508
• Appendix 493 p.508
• Wiring diagrams for reference sius34 801a_b p.509
• Heat recovery 230v reyq144ptju p.509
• D060077c p.509
• Appendix p.509
• D058614b p.510
• Appendix 495 p.510
• Sius34 801a_b wiring diagrams for reference p.510
• Heat recovery 230v remq72ptju p.510
• Wiring diagrams for reference sius34 801a_b p.511
• Heat recovery 230v remq96 120ptju p.511
• Appendix p.511
• Sius34 801a_b wiring diagrams for reference p.512
• Rxyq72 96 120pydn p.512
• Heat pump 460v p.512
• Field wiring p.512
• Appendix 497 p.512
• Wiring diagrams for reference sius34 801a_b p.513
• Heat pump 460v rxyq144 168 192 216 240pydn p.513
• Appendix p.513
• Sius34 801a_b wiring diagrams for reference p.514
• Heat pump 230v rxyq72 96 120 144ptju p.514
• Appendix 499 p.514
• Wiring diagrams for reference sius34 801a_b p.515
• Heat pump 230v rxyq168 192 216 240ptju p.515
• Appendix p.515
• Sius34 801a_b wiring diagrams for reference p.516
• Reyq72 96 120pydn p.516
• Heat recovery 460v p.516
• Appendix 501 p.516
• Wiring diagrams for reference sius34 801a_b p.517
• Switch p.517
• Heat recovery 460v reyq144 168 192 216 240pydn p.517
• Appendix p.517
• Sius34 801a_b wiring diagrams for reference p.518
• Heat recovery 230v reyq72 96 120 144ptju p.518
• Appendix 503 p.518
• Heat recovery 230v reyq168 192 216 240ptju p.519
• Appendix p.519
• Wiring diagrams for reference sius34 801a_b p.519
• Sius34 801a_b wiring diagrams for reference p.520
• Indoor unit p.520
• Fxzq07m 09m 12m 18m7vju p.520
• Fxfq12m 18m 24m 30m 36mvju p.520
• D059263 p.520
• Appendix 505 p.520
• Fxsq12m 18m 24m 30m 36m 48mvju p.521
• Fxdq07m 09m 12m 18m 24mvju p.521
• Fxmq30m 36m 48mvju p.522
• Fxaq07m 09m 12m 18m 24mvju p.522
• Fxlq12m 18m 24mvju fxnq12m 18m 24mvju p.523
• Fxhq12m 24m 36m p.523
• Bsvq36p 60pvju p.524
• Bs unit p.524
• Appendix 509 p.524
• Sius34 801a_b wiring diagrams for reference p.524
• Rxyq72p 96p 120pydn p.525
• Outdoor unit p.525
• List of electrical and functional parts p.525
• Reyq72pydn 120pydn p.526
• Remq72pydn p.527
• Remq96pydn 120pydn p.528
• List of electrical and functional parts sius34 801a_b p.529
• Indoor units p.529
• Indoor side p.529
• Appendix p.529
• Sius34 801a_b list of electrical and functional parts p.530
• Appendix 515 p.530
• List of electrical and functional parts sius34 801a_b p.531
• Appendix p.531
• Appendix 517 p.532
• Sius34 801a_b list of electrical and functional parts p.532
• Optional accessories of operation control system p.533
• Option list sius34 801a_b p.533
• Option list of controllers p.533
• Option list p.533
• Notes 1 installation box no is necessary for each adaptor marked 2 electrical box 5 1 6 1 is required for controller no 5 6 p.533
• Lonwork p.533
• Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae p.533
• Is a registered trade mark of echelon corporation p.533
• Building management system p.533
• Appendix p.533
• Sius34 801a_b option list p.534
• Rxyq72 240pydn p.534
• Reyq72 240pydn p.534
• Option lists outdoor unit p.534
• Appendix 519 p.534
• Piping installation point sius34 801a_b p.535
• Piping installation point p.535
• Piping between outside units p.535
• Oil remains in piping p.535
• Appendix p.535
• 2 to avoid the risk of oil detention in the stopping unit always connect the shutoff valve and the piping between outside units as shown a or b in the figure below p.535
• 1 the piping between outside units must be installed level pattern 1 or with a rise pattern 2 otherwise oil may pool in the pipes p.535
• Prohibited pattern p.536
• Oil remains in the stopping outside unit change to pattern 1 or pattern 2 p.536
• If less than 80 in p.536
• If 80 in or more p.536
• Gas pipe between outside units p.536
• Connect straightly p.536
• Change as shown in the figure below p.536
• Appendix 521 p.536
• 3 if the piping length between the outside units exceeds 80 inches create a rise of 80 inches or more in the gas piping under a length of 80 inches from the outside unit multi connection piping kit p.536
• To indoor unit p.536
• Sius34 801a_b piping installation point p.536
• Thermistor resistance temperature characteristics p.538
• Sius34 801a_b thermistor resistance temperature characteristics p.538
• R6t for heat exchanger liquid r7t r15t for suction r8t r10t for liquid r9t r14t p.538
• R5t r13t p.538
• Outdoor unit for outdoor air r1t for heat exchanger gas r2t r11t for heat exchanger deicer r4t r12t p.538
• Outdoor unit fin thermistor r1t p.538
• Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t p.538
• For sub cool heat exchanger liquid p.538
• Appendix 523 p.538
• Thermistor resistance temperature characteristics sius34 801a_b p.539
• Outdoor unit thermistors for discharge pipe r3t r31t r32t p.539
• Appendix p.539
• Pressure sensor p.540
• Appendix 525 p.540
• Sius34 801a_b pressure sensor p.540
• Pressure sensor sius34 801a_b p.541
• Method of checking the inverter s power transistors and diode modules p.541
• Inverter pc board p.541
• Electronic circuit p.541
• Appendix p.541
• 1 to make measurement disconnect all connectors and terminals p.541
• When using the digital type of multiple tester make measurement in diode check mode p.542
• When using the analog type of multiple tester make measurement in resistance measurement mode in the x1k ω range p.542
• Diode module checking p.542
• According to the tests made it is you can determine if the malfunction is the result of a faulty inverter the following section describes spossible causes of the faulty inverter 1 faulty compressor ground leakage 1 faulty fan motor ground leakage 1 entry of conductive foreign particles 1 1 abnormal voltage e g over voltage electrical surge or unbalanced voltage power module checking p.542
• Sius34 801a p.544
• Heat pump p.544
• Example of connection connection of 8 indoor units p.544
• Example of connection p.544
• Appendix 529 p.544
• Pipe size selection p.545
• Outside unit multi connection piping kit and refrigerant branch kit selection p.545
• Sius34 801a p.546
• Round off in units of 0 lb p.546
• Outside unit refnet joint a g p.546
• Indoor units 1 8 p.546
• How to calculate the additional refrigerant to be charged p.546
• Heat pump p.546
• Appendix 531 p.546
• A b r c k t p.546
• A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 3280 ft p.546
• 10 96 10 lb p.546
• 0 75 1 0 81 51 0 40 3 1 p.546
• Indoor unit cooling only p.547
• Actual pipe length p.547
• Indoor unit cool heat selection possible p.547
• Actual and equivalent pipe length p.547
• Total piping length from outside unit 2 to all indoor unit 3280 ft actual pipe length from first outside unit multi connection piping kit to outside unit 33 ft equivalent pipe length from first outside unit multi connection piping kit to outside unit 43 ft p.547
• 1 indicate the outside unit multi connection piping kit 2 in case of multi outdoor system re read outside unit to the first outside unit multi connection piping kit as seen from the indoor unit p.547
• Thin 2 pipes p.547
• Heat recovery p.547
• Suction gas pipe liquid pipe p.547
• Ft equivalent pipe length between outside unit 2 and indoor unit 620 ft note 1 p.547
• Suction gas pipe hp lp gas pipe liquid pipe p.547
• First outside unit multi connection piping kit p.547
• Single outside system reyq 7 p.547
• Example of connection connection of 8 indoor units p.547
• Pydn reyq 7 p.547
• Example 8 a o p.547
• Pydn reyq p.547
• Example 6 b 130 ft 8 m n p 130 ft example 8 o p.547
• Piping from outside unit to bs unit p.547
• Difference in height between outside unit and indoor unit h1 164 ft max 130 ft if the outside unit is below difference in height between adjacent indoor units h2 49 ft difference in height between adjacent outside units h3 16 ft p.547
• Piping from bs unit to indoor unit or piping from refrigerant branch kit to indoor unit used as cooling only p.547
• Bs unit p.547
• Pipe length between outside unit 2 and indoor unit 540 ft example 8 a b c d e 540 ft p.547
• Branch with refnet joint branch with refnet joint and header branch with refnet header p.547
• Outside unit side 3 pipes p.547
• Bold 3 pipes p.547
• Outside unit outside unit p.547
• Between outside unit 2 and indoor unit p.547
• Outside unit p.547
• Allowable length after the branch p.547
• Multi outside system reyq p.547
• Actual pipe length from first refrigerant branch kit either refnet joint or refnet header to indoor unit 130 ft note 2 example 8 b c d e s 130 ft p.547
• Indoor unit side 2 pipes p.547
• Actual pipe length equivalent length p.547
• Appendix 533 p.548
• Sius34 801a p.548
• Pipe size selection p.548
• Outside unit multi connection piping kit and refrigerant branch kit selection p.548
• Round off in units of 0 lb p.549
• Outside unit refnet joint a g p.549
• Indoor units 1 8 p.549
• How to calculate the additional refrigerant to be charged p.549
• A b u r c n s t o p p.549
• A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 3280 ft p.549
• 12 82 12 lb p.549
• 0 75 1 0 21 1 0 81 75 0 40 10 0 15 1 2 3 1 p.549
• Service tools 538 p.550
• Precautions for new refrigerant r 410a 36 p.550
• Precautions for new refrigerant r 410a p.550
• Part 7 precautions for new refrigerant r 410a p.550
• Part 7 p.550
• Precautions for new refrigerant r 410a p.551
• Outline p.551
• Mpa 145 psi p.551
• Characteristics of new refrigerant r 410a 1 performance almost the same performance as r 22 and r 407c 2 pressure working pressure is approx 1 times more than r 22 and r 407c 3 refrigerant composition good composition control since it is a quasi azeotropic mixture refrigerant p.551
• About refrigerant r 410a p.551
• 1 non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 2 quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 3 the design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c p.551
• Thermodynamic characteristic of r 410a p.552
• Sius34 801a_b precautions for new refrigerant r 410a p.552
• Precautions for new refrigerant r 410a 537 p.552
• Tool compatibility p.553
• Service tools p.553
• R 410a is used under higher working pressure compared to previous refrigerants r 22 r 407c the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing occurs sludge builds in the refrigerants and causes other problems therefore gauge manifolds and charge hoses with a previous refrigerant r 22 r 407c cannot be used for products with new refrigerants be sure to use dedicated tools and devices p.553
• O soft annealed h hard drawn p.553
• For the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose p.553
• Copper tube material and thickness p.553
• Conventional flaring tools can be used when the work process is changed previously a pipe extension margin of 0 to 0 32mm was provided for flaring for r 410a air conditioners perform pipe flaring with a pipe extension margin of 1 32 to 1 32mm p.554
• Unit mm p.554
• Specifications 2 dimension a p.554
• L for clutch types only a conventional tool with pipe extension margin adjustment can be used p.554
• Flaring tool p.554
• Differences 2 change of dimension a p.554
• Regarding purchasing of service tools please contact following address daikin u s corporation dallas office 1645 wallace dr ste 110 carrollton tx 75006 tel 1 972 245 1510 fax 1 972 245 1038 p.558
• Drawings flow charts p.564
• Sius34 801a p.567
• Service manual p.567
• Rxyq72 240pydn ptju r 410a heat pump 60hz reyq72 240pydn ptju r 410a heat recovery 60hz p.567
• R 410a heat pump heat recovery rx e yq72 240pydn ptju p.567