Daikin RXYQ240PYDN [196/567] Operation of refrigerant regulator

Содержание

• R 410a heat pump heat recovery rx e yq72 240pydn ptju 1
• Rxyq72 240pydn ptju r 410a heat pump 60hz reyq72 240pydn ptju r 410a heat recovery 60hz 1
• Service manual 1
• Sius34 801a 1
• Sius34 801a_b 1
• Basic control 3 2
• Combination of outdoor units 4 model selection 2
• Functional parts layout rxyq72p 96p 120p 1 2
• General information1 2
• Introduction vii 2
• Model names of indoor outdoor units 2 external appearance 2
• Part 1 2
• Part 2 2
• R 410a heat pump heat recovery 60hz 2
• Refrigerant circuit 7 2
• Refrigerant flow for each operation mode 3 5 function general 1 2
• Special control 0 2
• Specifications 1 2
• Vrviii r 410a heat pump 60hz9 2
• Basic control 88 3
• Functional parts layout 37 3
• Other control 1 3
• Outdoor unit pc board layout 3 12 field settings 4 3
• Part 3 3
• Protection control 3 3
• Refrigerant circuit 28 3
• Refrigerant flow for each operation mode 41 5 function general 85 3
• Specifications 21 3
• Test operation 2 3
• Vrviii r 410a heat recovery 60hz119 3
• Drain pump control 91 4
• Other control 18 4
• Outdoor unit pc board layout 40 12 field setting 41 4
• Part 4 indoor unit 269 4
• Protection control 10 4
• Special control 97 4
• Specifications 70 2 refrigerant circuit 84 3 operation flow chart 85 4 thermostat sensor in remote controller 87 4
• Test operation 19 4
• 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 5
• Part 5 5
• Symptom based troubleshooting 18 2 troubleshooting by remote controller 21 5
• Troubleshooting 315 5
• Troubleshooting by indication on the remote controller 36 5
• Troubleshooting op central remote controller 46 6
• Drawings flow charts iv 7
• Index i 7
• List of electrical and functional parts 10 7
• Option list 18 7
• Part 6 appendix 473 7
• Part 7 precautions for new refrigerant r 410a 535 7
• Piping diagrams 74 7
• Piping installation point 20 7
• Precautions for new refrigerant r 410a 36 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 7
• Troubleshooting op unified on off controller 53 7
• Wiring diagrams for reference 87 7
• Caution in repair 8
• Introduction 8
• Safety considerations 8
• Warning 8
• Warning 9
• Caution 10
• Cautions regarding products after repair 10
• Warning 10
• Warning 11
• Caution 12
• Inspection after repair 12
• Warning 12
• Caution 13
• Preface 14
• Part 1 general information 16
• Bs units 17
• Combination of outdoor units 17
• General information 17
• Heat pump 17
• Heat recovery 17
• Indoor units 17
• Model names of indoor outdoor units 17
• Model names of indoor outdoor units sius34 801a_b 17
• Outdoor units inverter series 17
• Vj 1 φ 208 230v 60hz ydn 3 φ 460v 60hz tj 3 φ 208 230v 60hz u vju tju standard compatibility symbol 17
• External appearance 18
• General information 3 18
• Indoor units 18
• Indoor units heat pump heat recovery 60hz 18
• Sius34 801a_b external appearance 18
• External appearance sius34 801a_b 19
• General information 19
• Outdoor units 19
• Reyq72p 96p 120pydn reyq72p 96p 120p 144ptju reyq144p 168p 192p 216p 240pydn reyq168p 192p 216p 240ptju 19
• Rxyq144ptju 19
• Rxyq72p 96p 120pydn rxyq72p 96p 120ptju 19
• Combination of outdoor units 20
• Heat pump single use 20
• Heat recovery 20
• Multiple use 20
• Note for multiple connection of 12 ton system or more an optional daikin outdoor unit multi connection piping kit is required 20
• Single use 20
• Connectable indoor unit 21
• Connectable indoor units number and capacity 21
• Heat pump 21
• Heat recovery 21
• Model selection 21
• Vrviii series 21
• Differences from conventional models 22
• Indoor unit capacity 22
• Unit number and capacity of indoor unit connectable to bs unit 22
• 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 22
• Basic control 3 24
• Functional parts layout rxyq72p 96p 120p 1 24
• Other control 1 24
• Part 2 vrviii r 410a heat pump 60hz 24
• Protection control 3 24
• Refrigerant circuit 7 24
• Refrigerant flow for each operation mode 3 5 function general 1 24
• Special control 0 24
• Specifications 1 24
• Outdoor unit pc board layout 3 12 field settings 4 25
• Test operation 2 25
• Outdoor units 26
• Specifications 26
• Specifications sius34 801a_b 27
• Vrviii r 410a heat pump 60hz 27
• Sius34 801a_b specifications 28
• Vrviii r 410a heat pump 60hz 13 28
• Specifications sius34 801a_b 29
• Vrviii r 410a heat pump 60hz 29
• Sius34 801a_b specifications 30
• Vrviii r 410a heat pump 60hz 15 30
• Specifications sius34 801a_b 31
• Vrviii r 410a heat pump 60hz 31
• Refrigerant circuit 32
• Rxyq72p 96p 120p 32
• Sius34 801a_b refrigerant circuit 32
• Vrviii r 410a heat pump 60hz 17 32
• 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 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 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 33
• No in refrigerant system diagram 33
• Refrigerant circuit sius34 801a_b 33
• Rxyq144ptju 33
• Rxyq72p 96p 120p 33
• Symbol name major function 33
• Vrviii r 410a heat pump 60hz 33
• Sius34 801a_b refrigerant circuit 34
• Vrviii r 410a heat pump 60hz 19 34
• Gauge port 35
• Heat exchanger 1 35
• Heat exchanger 2 35
• Liquid pipe 35
• Refrigerant circuit sius34 801a_b 35
• Rxyq144ptju 12ton single type inv unit 2 35
• Stop valve 35
• Subcool heat exchanger 1 35
• Subcool heat exchanger 2 35
• Suction pipe 35
• Vrviii r 410a heat pump 60hz 35
• Front view 36
• Functional parts layout rxyq72p 96p 120p 36
• Note for reference number refer to page 17 36
• Rxyq144ptju 36
• Coil for expansion valve 37
• Front view 37
• Functional parts layout rxyq72p 96p 120p sius34 801a_b 37
• Note for reference numbers refer to page 18 37
• Vrviii r 410a heat pump 60hz 37
• Refrigerant flow for each operation mode 38
• Rxyq72 96 120pydn ptju 38
• Rxyq72 96 120pydn ptju cooling operation 38
• Sius34 801a_b refrigerant flow for each operation mode 38
• Vrviii r 410a heat pump 60hz 23 38
• High temperature high pressure gas 39
• High temperature high pressure liquid 39
• Low temperature low pressure 39
• Refrigerant flow for each operation mode sius34 801a_b 39
• Rxyq72 96 120pydn ptju 39
• Rxyq72 96 120pydn ptju heating operation 39
• Vrviii r 410a heat pump 60hz 39
• High temperature high pressure gas 40
• High temperature high pressure liquid 40
• Low temperature low pressure 40
• Rxyq72 96 120pydn ptju 40
• Rxyq72 96 120pydn ptju cooling oil return operation 40
• Sius34 801a_b refrigerant flow for each operation mode 40
• Vrviii r 410a heat pump 60hz 25 40
• High temperature high pressure gas 41
• High temperature high pressure liquid 41
• Low temperature low pressure 41
• Refrigerant flow for each operation mode sius34 801a_b 41
• Rxyq72 96 120pydn ptju 41
• Rxyq72 96 120pydn ptju heating oil return operation 41
• Vrviii r 410a heat pump 60hz 41
• High temperature high pressure gas 42
• High temperature high pressure liquid 42
• Low temperature low pressure 42
• Rxyq72 96 120pydn ptju 42
• Rxyq72 96 120pydn ptju when a single unit is connected defrost 42
• Sius34 801a_b refrigerant flow for each operation mode 42
• Vrviii r 410a heat pump 60hz 27 42
• Cooling unit 43
• Cooling unit thermostat on 43
• Fan off 43
• Fan on 43
• Indoor unit 43
• Indoor unit operation 43
• One body type 43
• Refrigerant flow for each operation mode sius34 801a_b 43
• Rxyq144ptju cooling operation 43
• Thermostat off 43
• Vrviii r 410a heat pump 60hz 43
• Fan ll 44
• Fan off 44
• Fan on 44
• Heating unit 44
• Heating unit thermostat on 44
• Indoor unit 44
• Indoor unit operation 44
• One body type 44
• Rxyq144ptju heating operation 44
• Sius34 801a_b refrigerant flow for each operation mode 44
• Thermostat off 44
• Vrviii r 410a heat pump 60hz 29 44
• Cooling unit 45
• Cooling unit thermostat on 45
• Fan off 45
• Fan on 45
• Indoor unit 45
• Indoor unit operation 45
• One body type 45
• Refrigerant flow for each operation mode sius34 801a_b 45
• Rxyq144ptju cooling oil return operation 45
• Thermostat off 45
• Vrviii r 410a heat pump 60hz 45
• Fan ll 46
• Fan off 46
• Fan on 46
• Heating unit 46
• Heating unit thermostat off 46
• Heating unit thermostat on 46
• Indoor unit 46
• Indoor unit operation 46
• One body type 46
• Rxyq144ptju heating oil return operation 46
• Sius34 801a_b refrigerant flow for each operation mode 46
• Vrviii r 410a heat pump 60hz 31 46
• Fan ll 47
• Fan off 47
• Heating unit 47
• Heating unit thermostat on thermostat on 47
• Indoor unit indoor unit 47
• Indoor unit operation 47
• One body type 47
• Refrigerant flow for each operation mode sius34 801a_b 47
• Rxyq144ptju partial defrosting 1 defrosting in the right unit 47
• Thermostat off 47
• Vrviii r 410a heat pump 60hz 47
• Fan ll 48
• Fan off 48
• Heating unit 48
• Heating unit thermostat on thermostat on 48
• Indoor unit indoor unit 48
• Indoor unit operation on 48
• One body type 48
• Rxyq144ptju partial defrosting 2 defrosting in the left unit 48
• Sius34 801a_b refrigerant flow for each operation mode 48
• Thermostat off 48
• Vrviii r 410a heat pump 60hz 33 48
• High temperature high pressure gas 49
• High temperature high pressure liquid 49
• Low temperature low pressure 49
• Refrigerant flow for each operation mode sius34 801a_b 49
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju cooling operation when multiple units are connected 49
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju 49
• Vrviii r 410a heat pump 60hz 49
• High temperature high pressure gas 50
• High temperature high pressure liquid 50
• Low temperature low pressure 50
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju heating operation when multiple units are connected 50
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju 50
• Sius34 801a_b refrigerant flow for each operation mode 50
• Vrviii r 410a heat pump 60hz 35 50
• High temperature high pressure gas 51
• High temperature high pressure liquid 51
• Low temperature low pressure 51
• Refrigerant flow for each operation mode sius34 801a_b 51
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju cooling oil return operation when multiple units are connected 51
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju 51
• Vrviii r 410a heat pump 60hz 51
• High temperature high pressure gas 52
• High temperature high pressure liquid 52
• Low temperature low pressure 52
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju heating oil return operation when multiple units are connected 52
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju 52
• Sius34 801a_b refrigerant flow for each operation mode 52
• Vrviii r 410a heat pump 60hz 37 52
• High temperature high pressure gas 53
• High temperature high pressure liquid 53
• Low temperature low pressure 53
• Refrigerant flow for each operation mode sius34 801a_b 53
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju partial defrosting 1 defrosting in the right unit when multiple units are connected 53
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju 53
• Vrviii r 410a heat pump 60hz 53
• High temperature high pressure gas 54
• High temperature high pressure liquid 54
• Low temperature low pressure 54
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju partial defrosting 2 defrosting in the left unit 54
• Rxyq72 96 120pydn ptju rxyq72 96 120pydn rxyq96 120ptju 54
• Sius34 801a_b refrigerant flow for each operation mode 54
• Vrviii r 410a heat pump 60hz 39 54
• Discharge of refrigerant refrigerant is discharge from the refrigerant regulator by opening of svc when the load of the outdoor unit is large 55
• Operation of refrigerant regulator 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 55
• Recovery of refrigerant surplus refrigerant is recovered to refrigerant regulator by opening of svl and svg when the indoor unit load is small 55
• Refrigerant flow for each operation mode sius34 801a_b 55
• Vrviii r 410a heat pump 60hz 55
• Function general 56
• Note symbol in are for rxyq144ptju 56
• Symbol 56
• Operation mode 57
• 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 58
• Basic control 58
• List of functions in normal operation 58
• Normal operation 58
• 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 59
• Compressor pi control 59
• Cooling operation 59
• Heating operation 59
• In order to make operating time equal for each compressor of multi connection outdoor units outdoor units are used in rotation 59
• Rotation of outdoor units 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 59
• System with two outdoor units 59
• Timing of outdoor rotation in start of startup control 59
• Compressor operating priority 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 60
• Each compressor operates in the following order of priority 60
• Inv inverter compressor std1 standard compressor 1 60
• Inv2 inv1 60
• No 1 no 2 60
• No 2 no 1 60
• Pattern 1 60
• Rxyq144ptju 60
• Rxyq144ptju 12 ton 60
• Rxyq72 96 120pydn ptju 60
• Rxyq72p 96p 120p 60
• Sius34 801a_b basic control 60
• Std1 inv 60
• Vrviii r 410a heat pump 60hz 45 60
• Basic control sius34 801a_b 61
• Compressor operating priority 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 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 61
• Inv inverter compressor std1 standard compressor 1 61
• Inv std1 61
• No 1 no 3 61
• No 2 no 4 61
• Pattern 1 pattern 2 61
• Rxyq144 168 192 216 240pydn rxyq168 192 216 240ptju 61
• Rxyq144p 168p 192p 216p 240p 61
• Vrviii r 410a heat pump 60hz 61
• Electronic expansion valve pi control 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 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 62
• Main electronic expansion valve evm control 62
• Refrigerant charge electronic expansion valve evj control 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 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 62
• Step control of outdoor unit fans 62
• Subcooling electronic expansion valve evt control 62
• Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 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 62
• 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 62
• Outdoor unit fan control in cooling operation 63
• Heat exchanger control 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 64
• Multi outdoor unit system 64
• Rxyq144ptju 64
• Sius34 801a_b basic control 64
• Vrviii r 410a heat pump 60hz 49 64
• Special control 65
• Startup control 65
• Startup control in cooling operation 65
• 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 65
• For startup oil return operation or setup after defrosting start up multiple compressors at a high speed according to the 66
• Large capacity start up control heating 66
• Startup control in heating operation 66
• Cooling oil return operation 67
• Oil return operation 67
• Start up std compressors at intervals of 15 seconds 67
• 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 68
• The higher the compressor operating step no the cumulative refrigerant oil consumption increases 68
• Heating oil return operation 69
• K the system will switch to defrost operation refer to section 7 for detail 69
• Defrost operation 71
• Single system 71
• Multi outdoor unit system 72
• 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 72
• 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 73
• Pump down residual operation 73
• Pump down residual operation in cooling operation 73
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively 74
• Pump down residual operation in heating operation 74
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively 75
• Restart standby 75
• Standby 75
• 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 75
• Crankcase heater control 76
• 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 76
• Stopping operation 76
• This mode is used to define actuator operations when the system stops 76
• When system is in stop mode normal operation stop 76
• 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 77
• Stop due to malfunction 77
• High pressure protection control 78
• In cooling operation the following control is performed in the entire system pc_max indicates the maximum value within the system 78
• Protection control 78
• 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 78
• Heating operation the following control is performed in the entire system pc_max indicates the maximum value within the system 79
• 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 80
• Low pressure protection control 80
• This low pressure protection control is used to protect compressors against the transient decrease of low pressure 80
• When occurring 4 times within 30 min the malfunction code e4 is displayed 80
• 1 pe_min represents a minimum low pressure value detected within the system 2 for compressor steps refer to information on page 45 81
• In heating operation for multi outdoor unit systems the entire system performs this control in the following sequence 81
• 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 82
• Discharge pipe protection control 82
• Inv compressor 82
• Std compressor 82
• 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 82
• In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 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 83
• Inverter overcurrent protection control perform the following control of integrated for each inv compressor 83
• Inverter protection control 83
• Inverter fin temperature control perform the following control of integrated for each inv compressor 84
• Std compressor overload protection 85
• This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of the std compressor such as locking 85
• Backup operation 86
• Demand operation 86
• Heating operation prohibition 86
• Other control 86
• Installation process 87
• Test operation 87
• Check work prior to turn power supply on 88
• Procedure and outline 88
• 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 89
• Check on amount of refrigerant charge 89
• Check the status of the stop valves 89
• Check to be sure the following stop valves are open 89
• Has the additional refrigerant charging amount been recorded on the precautions for servicing label 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 89
• Is a correct quantity of refrigerant charged the following method is available for additional charging of refrigerant 1 calculate additional refrigerant quantity 89
• Open open open 89
• Another switch box is provided on the front left side of the unit but it requires no field settings 90
• Be sure to turn the power on 6 hours before starting operation to power on the crankcase heater this protects the compressors 90
• Before starting the normal operation after the completion of check operations make sure indoor and outdoor units are operating normally 90
• Check for normal operation 90
• Check the led display of the outdoor unit pc board 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 90
• Conduct check operations 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 90
• Make field settings with outdoor unit pc board 90
• Sius34 801a_b test operation 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 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 90
• Turn outdoor unit and indoor unit power on 90
• Turn power on 90
• Vrviii r 410a heat pump 60hz 75 90
• 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 91
• Air tight test and vacuum drying 91
• Gauge manifold charge hose valve 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 91
• Test operation sius34 801a_b 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 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 91
• Vrviii r 410a heat pump 60hz 91
• Pipe insulation 92
• Additional refrigerant charge and check operation 93
• Before working 93
• 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 96
• Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 h1p off default 96
• Procedure of adding refrigerant charging and check operation 97
• Procedure of adding refrigerant charging 98
• 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 100
• Automatic refrigerant charging operation procedure 100
• Blinking 100
• Off on or blinking 100
• Sius34 801a_b test operation 100
• The marks of led mean as follows 100
• Vrviii r 410a heat pump 60hz 85 100
• Procedure of check operation 103
• Before test run 104
• Onsite settings 104
• Test run 104
• Test run 105
• Checks after test run 106
• Operation when power is turned on 106
• When turning on power first time 106
• When turning on power the second time and subsequent 106
• 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 107
• Electrical components box upper right 107
• When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 107
• 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 108
• 2 set mode display led leds display mode according to the setting 108
• 3 mode setting switch used to change mode 108
• 4 local setting switch used to make field settings 108
• Outdoor unit pc board 108
• Outdoor unit pc board layout 108
• Field settings 109
• Field settings on the outdoor unit 109
• 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 109
• 1 factory setting of initial pc board 110
• For setting items of 1 refer to detailed information provided on page 101 onward 110
• Setting by dip switches 110
• Caution 111
• Dip switch detail 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 111
• Do not make any changes in all factory settings of the dip switches on the control pc board 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 111
• Initial conditions of dip switches 111
• Make the settings according to models of outdoor units all models are set to off at factory refer to following pages for setting detail 111
• Setting at replacement by spare pc board 111
• Detail of ds1 1 4 ds2 1 4 setting 112
• Setting by push button switches 112
• 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 112
• Mode changing procedure 2 114
• Sius34 801a_b field settings 114
• Vrviii r 410a heat pump 60hz 99 114
• 7 8 7 7 7 7 115
• A setting mode 1 115
• Field settings sius34 801a_b 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 115
• Vrviii r 410a heat pump 60hz 115
• B setting mode 2 116
• Bs5 rewiring 117
• The numbers in the no column represent the number of times to press the set bs2 button 117
• 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 120
• 7 7 7 7 7 120
• 7 7 7 7 8 120
• 7 7 7 8 7 120
• 7 7 7 8 8 120
• 7 7 8 7 7 120
• 7 7 8 7 8 120
• 7 7 8 8 8 120
• 7 8 7 7 7 120
• 7 8 7 8 8 120
• 7 8 8 7 7 120
• 7 8 8 7 8 120
• 7 8 8 8 7 120
• 7 8 8 8 8 120
• 8 7 7 7 7 120
• 8 7 8 7 7 120
• 8 7 8 7 8 120
• 8 7 8 8 7 120
• 8 8 7 7 8 120
• C monitor mode 120
• Sius34 801a_b field settings 120
• The numbers in the no column represent the number of times to press the set bs2 button 120
• Vrviii r 410a heat pump 60hz 105 120
• 7 7 7 7 7 121
• 7 7 7 7 8 121
• 7 7 7 7 9 121
• 7 7 7 8 7 121
• 7 7 7 9 7 121
• 7 7 8 7 7 121
• 7 7 9 7 7 121
• 7 8 7 7 7 121
• Setting of low noise operation 121
• Setting of low noise operation and demand operation 121
• Can be set with 123
• Field settings sius34 801a_b 123
• Image of operation in the case of a 123
• Image of operation in the case of a and b 123
• Image of operation in the case of b 123
• Is received during 123
• Vrviii r 410a heat pump 60hz 123
• 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 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 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 124
• Make setting of the set item no 32 setting of constant demand to on 2 while in 124
• Select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 124
• Set the setting condition for set item no 12 setting of external low noise demand operation to yes 3 if necessary while in 124
• Setting of demand operation 124
• Field settings sius34 801a_b 125
• Image of operation in the case of a 125
• Image of operation in the case of a and b 125
• Image of operation in the case of b 125
• Vrviii r 410a heat pump 60hz 125
• Detailed setting procedure of low noise operation and demand control 126
• 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 126
• Setting of refrigerant recovery mode 127
• Setting of vacuuming mode 127
• Check operation detail 128
• Check operation function 128
• Emergency operation 128
• Disabling the compressor 1 inv or inv1 from operating set no 38 of setting mode 2 to disable compressor 1 operation 130
• Disabling the compressor 2 std or inv2 from operating set no 39 of setting mode 2 to disable compressor 2 operation 130
• Disabling the outdoor unit 1 to operate set no 38 of setting mode 2 to disable outdoor unit 1 operation 130
• Disabling the outdoor unit 2 from operating set no 39 of setting mode 2 to disable outdoor unit 2 operation 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 130
• Sius34 801a_b field settings 130
• Vrviii r 410a heat pump 60hz 115 130
• Cancel disabling the compressor 1 inv or inv1 from operating set no 38 disable compressor 1 operation of setting mode 2 to off 131
• Cancel disabling the compressor 2 std or inv2 from operating set no 39 disable compressor 2 operation of setting mode 2 to off 131
• Cancel of emergency operation to cancel the emergency operation conduct the following setting return to factory setting 131
• Field settings sius34 801a_b 131
• Vrviii r 410a heat pump 60hz 131
• Cancel disabling the outdoor unit 1 from operating set no 38 disable outdoor unit 1 operation of setting mode 2 to off 132
• Cancel disabling the outdoor unit 2 from operating set no 39 disable outdoor unit 2 operation of setting mode 2 to off 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 132
• Sius34 801a_b field settings 132
• Vrviii r 410a heat pump 60hz 117 132
• Basic control 88 134
• Functional parts layout 37 134
• Part 3 134
• Part 3 vrviii r 410a heat recovery 60hz 134
• Protection control 10 134
• Refrigerant circuit 28 134
• Refrigerant flow for each operation mode 41 5 function general 85 134
• Special control 97 134
• Specifications 21 134
• Vrviii r 410a heat recovery 60hz 134
• Other control 18 135
• Outdoor unit pc board layout 40 12 field setting 41 135
• Test operation 19 135
• Outdoor units 136
• Specifications 136
• Specifications sius34 801a_b 137
• Vrviii r 410a heat recovery 60hz 137
• Sius34 801a_b specifications 138
• Vrviii r 410a heat recovery 60hz 123 138
• Specifications sius34 801a_b 139
• Vrviii r 410a heat recovery 60hz 139
• Sius34 801a_b specifications 140
• Vrviii r 410a heat recovery 60hz 125 140
• Bs units 141
• Specifications sius34 801a_b 141
• Vrviii r 410a heat recovery 60hz 141
• Connection range for bs unit 142
• Sius34 801a_b specifications 142
• Vrviii r 410a heat recovery 60hz 127 142
• Refrigerant circuit 143
• Refrigerant circuit sius34 801a_b 143
• Reyq72 96 120pydn ptju 143
• Vrviii r 410a heat recovery 60hz 143
• Dual pressure gas pipe 144
• Gauge port 144
• Heat exchanger 1 144
• Heat exchanger 2 144
• Liquid pipe subcool heat exchanger 2 144
• Reyq72 96 120pydn ptju 6ton 8ton 10ton single type inv unit std unit 144
• Sius34 801a_b refrigerant circuit 144
• Stop valve 144
• Subcool heat exchanger 1 144
• Suction pipe 144
• Vrviii r 410a heat recovery 60hz 129 144
• Refrigerant circuit sius34 801a_b 145
• Reyq144ptju 145
• Vrviii r 410a heat recovery 60hz 145
• Gauge port 146
• Heat exchanger 1 146
• Heat exchanger 2 146
• Liquid pipe 146
• Reyq144ptju 12ton single type inv unit 2 146
• Sius34 801a_b refrigerant circuit 146
• Stop valve 146
• Subcool heat exchanger 1 146
• Subcool heat exchanger 2 146
• Suction pipe 146
• Vrviii r 410a heat recovery 60hz 131 146
• Refrigerant circuit sius34 801a_b 147
• Remq72pydn ptju multi 6ton 147
• Vrviii r 410a heat recovery 60hz 147
• Gauge port 148
• Remq72pydn ptju 148
• Sius34 801a_b refrigerant circuit 148
• Stop valve 148
• Stop valve dual pressure gas pipe 148
• Stop valve equalizing pipe 148
• Stop valve liquid pipe 148
• Suction pipe 148
• Vrviii r 410a heat recovery 60hz 133 148
• Refrigerant circuit sius34 801a_b 149
• Remq96 120pydn ptju multi 8 10ton 149
• Vrviii r 410a heat recovery 60hz 149
• Gauge port 150
• Inv s1 150
• Remq96 120pydn ptju 150
• Sius34 801a_b refrigerant circuit 150
• Stop valve 150
• Stop valve dual pressure gas pipe 150
• Stop valve equalizing pipe 150
• Stop valve liquid pipe 150
• Suction pipe 150
• Vrviii r 410a heat recovery 60hz 135 150
• Bs unit functional parts 151
• Bsvq36 60pvju 151
• Indoor side outdoor side 151
• Front view 152
• Functional parts layout 152
• Note for reference numbers refer to page 128 152
• Reyq72p 96p 120p 152
• Front view 153
• Functional parts layout sius34 801a_b 153
• Note for reference numbers refer to page 130 153
• Reyq144ptju 153
• Vrviii r 410a heat recovery 60hz 153
• Front view 154
• Note for reference numbers refer to page 132 154
• Remq72p 154
• Sius34 801a_b functional parts layout 154
• Vrviii r 410a heat recovery 60hz 139 154
• Front view 155
• Functional parts layout sius34 801a_b 155
• Note for reference number refer to page 134 155
• Remq96p 120p 155
• Vrviii r 410a heat recovery 60hz 155
• Cooling unit 156
• Cooling unit thermostat on 156
• Refrigerant flow for each operation mode 156
• Reyq72p 96p 120p cooling operation 156
• Sius34 801a_b refrigerant flow for each operation mode 156
• Thermostat off 156
• Vrviii r 410a heat recovery 60hz 141 156
• Bs unit 157
• Fan ll 157
• Fan off 157
• Fan on 157
• Heating unit 157
• Heating unit thermostat on 157
• Indoor unit 157
• Indoor unit operation 157
• One body type 157
• Refrigerant flow for each operation mode sius34 801a_b 157
• Reyq72p 96p 120p heating operation 157
• Thermostat off 157
• Vrviii r 410a heat recovery 60hz 157
• Bs unit 158
• Cooling unit thermostat on 158
• Fan ll 158
• Fan on 158
• Heating unit 158
• Indoor unit 158
• Indoor unit operation 158
• One body type 158
• Reyq72p 96p 120p simultaneous cooling heating operation 158
• Sius34 801a_b refrigerant flow for each operation mode 158
• Thermostat off 158
• Thermostat on 158
• Vrviii r 410a heat recovery 60hz 143 158
• Bs unit 159
• Cooling unit 159
• Cooling unit thermostat on 159
• Fan off 159
• Fan on 159
• Indoor unit 159
• Indoor unit operation 159
• One body type 159
• Refrigerant flow for each operation mode sius34 801a_b 159
• Reyq72p 96p 120p cooling oil return operation 159
• Thermostat off 159
• Vrviii r 410a heat recovery 60hz 159
• Bs unit 160
• Fan ll 160
• Fan off 160
• Fan on 160
• Heating unit 160
• Heating unit thermostat off 160
• Heating unit thermostat on 160
• Indoor unit 160
• Indoor unit operation 160
• One body type 160
• Reyq72p 96p 120p heating oil return operation 160
• Sius34 801a_b refrigerant flow for each operation mode 160
• Vrviii r 410a heat recovery 60hz 145 160
• Bs unit 161
• Cooling unit thermostat on 161
• Fan off 161
• Fan on 161
• Heating unit 161
• Indoor unit 161
• Indoor unit operation 161
• One body type 161
• Refrigerant flow for each operation mode sius34 801a_b 161
• Reyq72p 96p 120p oil return operation at simultaneous cooling heating operation 161
• Thermostat on 161
• Vrviii r 410a heat recovery 60hz 161
• Bs unit bs unit 162
• Cooling unit thermostat on thermostat on 162
• Fan ll 162
• Fan off 162
• Fan on 162
• Heating unit 162
• Indoor unit indoor unit 162
• Indoor unit operation 162
• One body type 162
• Reyq72p 96p 120p partial defrosting 1 defrosting in the right unit 162
• Sius34 801a_b refrigerant flow for each operation mode 162
• Thermostat on 162
• Vrviii r 410a heat recovery 60hz 147 162
• Bs unit bs unit 163
• Cooling unit thermostat on thermostat on 163
• Fan ll 163
• Fan off 163
• Fan on 163
• Heating unit 163
• Indoor unit indoor unit 163
• Indoor unit operation 163
• One body type 163
• Refrigerant flow for each operation mode sius34 801a_b 163
• Reyq72p 96p 120p partial defrosting 2 defrosting in the left unit 163
• Thermostat on thermostat on 163
• Vrviii r 410a heat recovery 60hz 163
• Bs unit 164
• Cooling unit 164
• Cooling unit thermostat on 164
• Fan off 164
• Fan on 164
• Indoor unit 164
• Indoor unit operation 164
• One body type 164
• Reyq144ptju cooling operation 164
• Sius34 801a_b refrigerant flow for each operation mode 164
• Thermostat off 164
• Vrviii r 410a heat recovery 60hz 149 164
• Bs unit 165
• Fan ll 165
• Fan off 165
• Fan on 165
• Heating unit 165
• Heating unit thermostat on 165
• Indoor unit 165
• Indoor unit operation 165
• One body type 165
• Refrigerant flow for each operation mode sius34 801a_b 165
• Reyq144ptju heating operation 165
• Thermostat off 165
• Vrviii r 410a heat recovery 60hz 165
• Bs unit 166
• Cooling unit thermostat on 166
• Fan ll 166
• Fan on 166
• Heating unit 166
• Indoor unit 166
• Indoor unit operation 166
• One body type 166
• Reyq144ptju simultaneous cooling heating operation 166
• Sius34 801a_b refrigerant flow for each operation mode 166
• Thermostat off 166
• Thermostat on 166
• Vrviii r 410a heat recovery 60hz 151 166
• Bs unit 167
• Cooling unit 167
• Cooling unit thermostat on 167
• Fan off 167
• Fan on 167
• Indoor unit 167
• Indoor unit operation 167
• One body type 167
• Refrigerant flow for each operation mode sius34 801a_b 167
• Reyq144ptju cooling oil return operation 167
• Thermostat off 167
• Vrviii r 410a heat recovery 60hz 167
• Bs unit 168
• Fan ll 168
• Fan off 168
• Fan on 168
• Heating unit 168
• Heating unit thermostat off 168
• Heating unit thermostat on 168
• Indoor unit 168
• Indoor unit operation 168
• One body type 168
• Reyq144ptju heating oil return operation 168
• Sius34 801a_b refrigerant flow for each operation mode 168
• Vrviii r 410a heat recovery 60hz 153 168
• Bs unit 169
• Cooling unit thermostat on 169
• Fan off 169
• Fan on 169
• Heating unit 169
• Indoor unit 169
• Indoor unit operation 169
• One body type 169
• Refrigerant flow for each operation mode sius34 801a_b 169
• Reyq144ptju oil return operation at simultaneous cooling heating operation 169
• Thermostat on 169
• Vrviii r 410a heat recovery 60hz 169
• Bs unit bs unit 170
• Cooling unit thermostat on thermostat on 170
• Fan ll 170
• Fan off 170
• Fan on 170
• Heating unit 170
• Indoor unit indoor unit 170
• Indoor unit operation 170
• One body type 170
• Reyq144ptju partial defrosting 1 defrosting in the right unit 170
• Sius34 801a_b refrigerant flow for each operation mode 170
• Thermostat on 170
• Vrviii r 410a heat recovery 60hz 155 170
• Bs unit bs unit 171
• Cooling unit thermostat on thermostat on 171
• Fan ll 171
• Fan off 171
• Fan on 171
• Heating unit 171
• Indoor unit indoor unit 171
• Indoor unit operation 171
• One body type 171
• Refrigerant flow for each operation mode sius34 801a_b 171
• Reyq144ptju partial defrosting 2 defrosting in the left unit 171
• Thermostat on thermostat on 171
• Vrviii r 410a heat recovery 60hz 171
• High temperature high pressure gas 172
• High temperature high pressure liquid 172
• Low temperature low pressure 172
• Remq72pydn multi 6ton remq72pydn multi 6ton 172
• Reyq144pydn cooling operation 172
• Sius34 801a_b refrigerant flow for each operation mode 172
• Vrviii r 410a heat recovery 60hz 157 172
• High temperature high pressure gas 173
• High temperature high pressure liquid 173
• Low temperature low pressure 173
• Refrigerant flow for each operation mode sius34 801a_b 173
• Remq72pydn multi 6ton remq72pydn multi 6ton 173
• Reyq144pydn heating operation 173
• Vrviii r 410a heat recovery 60hz 173
• High temperature high pressure gas 174
• High temperature high pressure liquid 174
• Low temperature low pressure 174
• Remq72pydn multi 6ton remq72pydn multi 6ton 174
• Reyq144pydn simultaneous cooling heating operation 174
• Sius34 801a_b refrigerant flow for each operation mode 174
• Vrviii r 410a heat recovery 60hz 159 174
• High temperature high pressure gas 175
• High temperature high pressure liquid 175
• Low temperature low pressure 175
• Refrigerant flow for each operation mode sius34 801a_b 175
• Remq72pydn multi 6ton remq72pydn multi 6ton 175
• Reyq144pydn cooling oil return operation 175
• Vrviii r 410a heat recovery 60hz 175
• High temperature high pressure gas 176
• High temperature high pressure liquid 176
• Low temperature low pressure 176
• Remq72pydn multi 6ton remq72pydn multi 6ton 176
• Reyq144pydn heating oil return operation 176
• Sius34 801a_b refrigerant flow for each operation mode 176
• Vrviii r 410a heat recovery 60hz 161 176
• High temperature high pressure gas 177
• High temperature high pressure liquid 177
• Low temperature low pressure 177
• Refrigerant flow for each operation mode sius34 801a_b 177
• Remq72pydn multi 6ton remq72pydn multi 6ton 177
• Reyq144pydn oil return operation at simultaneous cooling heating operation 177
• Vrviii r 410a heat recovery 60hz 177
• High temperature high pressure gas 178
• High temperature high pressure liquid 178
• Low temperature low pressure 178
• Remq72pydn multi 6ton remq72pydn multi 6ton 178
• Reyq144pydn partial defrosting 1 defrosting in the right unit 178
• Sius34 801a_b refrigerant flow for each operation mode 178
• Vrviii r 410a heat recovery 60hz 163 178
• High temperature high pressure gas 179
• High temperature high pressure liquid 179
• Low temperature low pressure 179
• Refrigerant flow for each operation mode sius34 801a_b 179
• Remq72pydn multi 6ton remq72pydn multi 6ton 179
• Reyq144pydn partial defrosting 2 defrosting in the left unit 179
• Vrviii r 410a heat recovery 60hz 179
• High temperature high pressure gas 180
• High temperature high pressure liquid 180
• Low temperature low pressure 180
• Remq72p multi 6ton remq96 120p multi 8 10ton 180
• Reyq168p 192p cooling operation 180
• Sius34 801a_b refrigerant flow for each operation mode 180
• Vrviii r 410a heat recovery 60hz 165 180
• High temperature high pressure gas 181
• High temperature high pressure liquid 181
• Low temperature low pressure 181
• Refrigerant flow for each operation mode sius34 801a_b 181
• Remq72p multi 6ton remq96 120p multi 8 10ton 181
• Reyq168p 192p heating operation 181
• Vrviii r 410a heat recovery 60hz 181
• High temperature high pressure gas 182
• High temperature high pressure liquid 182
• Low temperature low pressure 182
• Remq72p multi 6ton remq96 120p multi 8 10ton 182
• Reyq168p 192p simultaneous cooling heating operation 182
• Sius34 801a_b refrigerant flow for each operation mode 182
• Vrviii r 410a heat recovery 60hz 167 182
• High temperature high pressure gas 183
• High temperature high pressure liquid 183
• Low temperature low pressure 183
• Refrigerant flow for each operation mode sius34 801a_b 183
• Remq72p multi 6ton remq96 120p multi 8 10ton 183
• Reyq168p 192p cooling oil return operation 183
• Vrviii r 410a heat recovery 60hz 183
• High temperature high pressure gas 184
• High temperature high pressure liquid 184
• Low temperature low pressure 184
• Remq72p multi 6ton remq96 120p multi 8 10ton 184
• Reyq168p 192p heating oil return operation 184
• Sius34 801a_b refrigerant flow for each operation mode 184
• Vrviii r 410a heat recovery 60hz 169 184
• High temperature high pressure gas 185
• High temperature high pressure liquid 185
• Low temperature low pressure 185
• Refrigerant flow for each operation mode sius34 801a_b 185
• Remq72p multi 6ton remq96 120p multi 8 10ton 185
• Reyq168p 192p oil return operation at simultaneous cooling heating operation 185
• Vrviii r 410a heat recovery 60hz 185
• High temperature high pressure gas 186
• High temperature high pressure liquid 186
• Low temperature low pressure 186
• Remq72p multi 6ton remq96 120p multi 8 10ton 186
• Reyq168p 192p partial defrosting 1 defrosting in the right unit 186
• Sius34 801a_b refrigerant flow for each operation mode 186
• Vrviii r 410a heat recovery 60hz 171 186
• High temperature high pressure gas 187
• High temperature high pressure liquid 187
• Low temperature low pressure 187
• Refrigerant flow for each operation mode sius34 801a_b 187
• Remq72p multi 6ton remq96 120p multi 8 10ton 187
• Reyq168p 192p partial defrosting 2 defrosting in the left unit 187
• Vrviii r 410a heat recovery 60hz 187
• High temperature high pressure gas 188
• High temperature high pressure liquid 188
• Low temperature low pressure 188
• Remq96 120p multi 8 10ton remq120p multi 10ton 188
• Reyq216p 240p cooling operation 188
• Sius34 801a_b refrigerant flow for each operation mode 188
• Vrviii r 410a heat recovery 60hz 173 188
• High temperature high pressure gas 189
• High temperature high pressure liquid 189
• Low temperature low pressure 189
• Refrigerant flow for each operation mode sius34 801a_b 189
• Remq96 120p multi 8 10ton remq120p multi 10ton 189
• Reyq216p 240p heating operation 189
• Vrviii r 410a heat recovery 60hz 189
• High temperature high pressure gas 190
• High temperature high pressure liquid 190
• Low temperature low pressure 190
• Remq96 120p multi 8 10ton remq120p multi 10ton 190
• Reyq216p 240p simultaneous cooling heating operation 190
• Sius34 801a_b refrigerant flow for each operation mode 190
• Vrviii r 410a heat recovery 60hz 175 190
• High temperature high pressure gas 191
• High temperature high pressure liquid 191
• Low temperature low pressure 191
• Refrigerant flow for each operation mode sius34 801a_b 191
• Remq96 120p multi 8 10ton remq120p multi 10ton 191
• Reyq216p 240p cooling oil return operation 191
• Vrviii r 410a heat recovery 60hz 191
• High temperature high pressure gas 192
• High temperature high pressure liquid 192
• Low temperature low pressure 192
• Remq96 120p multi 8 10ton remq120p multi 10ton 192
• Reyq216p 240p heating oil return operation 192
• Sius34 801a_b refrigerant flow for each operation mode 192
• Vrviii r 410a heat recovery 60hz 177 192
• High temperature high pressure gas 193
• High temperature high pressure liquid 193
• Low temperature low pressure 193
• Refrigerant flow for each operation mode sius34 801a_b 193
• Remq96 120p multi 8 10ton remq120p multi 10ton 193
• Reyq216p 240p oil return operation at simultaneous cooling heating operation 193
• Vrviii r 410a heat recovery 60hz 193
• High temperature high pressure gas 194
• High temperature high pressure liquid 194
• Low temperature low pressure 194
• Remq96 120p multi 8 10ton remq120p multi 10ton 194
• Reyq216p 240p partial defrosting 1 defrosting in the right unit 194
• Sius34 801a_b refrigerant flow for each operation mode 194
• Vrviii r 410a heat recovery 60hz 179 194
• High temperature high pressure gas 195
• High temperature high pressure liquid 195
• Low temperature low pressure 195
• Refrigerant flow for each operation mode sius34 801a_b 195
• Remq96 120p multi 8 10ton remq120p multi 10ton 195
• Reyq216p 240p partial defrosting 2 defrosting in the left unit 195
• Vrviii r 410a heat recovery 60hz 195
• Discharge of refrigerant discharge refrigerant from refrigerant regulator by opening of svc when the load of the outdoor unit is large 196
• Operation of refrigerant regulator 196
• Recovery of refrigerant surplus refrigerant is recovered to refrigerant regulator by opening of svl and svg when the indoor unit load is small 196
• Sius34 801a_b refrigerant flow for each operation mode 196
• Vrviii r 410a heat recovery 60hz 181 196
• 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 197
• Cooling unit 198
• Heating unit 198
• In cooling operation 198
• In equalization 198
• Pressure equalizing when switching operation cooling heating 198
• To heating operation 198
• 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 198
• Cooling unit 199
• Heating unit 199
• In equalization 199
• In heating operation 199
• To cooling operation 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 199
• Function general 200
• Symbol 200
• Operation mode 202
• 1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant 203
• Basic control 203
• List of functions in normal operation 203
• Normal operation 203
• 1 and 2 refer to chapter 6 control of electonic expansion valve on page 293 204
• 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 204
• Compressor pi control 204
• Cooling operation 204
• Heating operation 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 204
• Rotation of outdoor units 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 204
• System with two outdoor units 204
• Timing of outdoor rotation in start of startup control 204
• Basic control sius34 801a_b 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 205
• Compressors may operate in any pattern other than those mentioned above according to the operating status 205
• Operating priority and rotation of compressors 205
• Vrviii r 410a heat recovery 60hz 205
• Compressors 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 206
• Reyq144ptju 12 ton 206
• Reyq72 96 120pydn ptju 206
• Single unit installation 206
• Sius34 801a_b basic control 206
• Vrviii r 410a heat recovery 60hz 191 206
• Basic control sius34 801a_b 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 207
• Reyq144pydn 6 6 ton 207
• Reyq168pydn 192pydn 6 8 10 ton 207
• Two unit multi system 207
• Vrviii r 410a heat recovery 60hz 207
• Electronic expansion valve pi control 208
• Main electronic expansion valve evm control 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 208
• Reyq216pydn 240pydn 8 10 10 ton 208
• Sius34 801a_b basic control 208
• Two unit multi system 208
• Vrviii r 410a heat recovery 60hz 193 208
• When the outdoor unit heat exchanging is performed via the evaporator 20sa is set to on this 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 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 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 209
• Outdoor unit fan control in cooling operation 209
• Refrigerant charge electronic expansion valve evj control 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 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 209
• Step control of outdoor unit fans 209
• Subcooling electronic expansion valve evt control 209
• Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 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 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 209
• Circulation rate to be supplied to indoor units 210
• Fan step 7 210
• Fan step 8 210
• Fan step 9 210
• Heat exchanger control 210
• Hold the current step on outdoor unit fan 210
• Lapse of 20 sec 210
• Pi control 210
• Single system 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 210
• Basic control sius34 801a_b 211
• Multi outdoor unit system 211
• Vrviii r 410a heat recovery 60hz 211
• Special control 212
• Startup control 212
• Startup control in cooling operation 212
• 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 212
• For startup oil return operation or setup after defrosting start up multiple compressors at a high speed according to the 213
• Large capacity start up control heating 213
• Startup control in heating operation 213
• Cooling oil return operation 214
• Oil return operation 214
• Start up std compressors at intervals of 15 seconds 214
• 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 215
• The higher the compressor operating step no the cumulative refrigerant oil consumption increases 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 217
• Heating oil return operation including cooling heating simultaneous operation 217
• 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 217
• Defrost operation 218
• 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 218
• Pump down residual operation 220
• 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 221
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively 221
• Pump down residual operation in cooling operation 221
• Pe_min and pc_max indicate the minimum and maximum values in the system respectively 222
• Pump down residual operation in heating operation and simultaneous cooling heating operation 222
• Restart standby 222
• Standby 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 222
• Crankcase heater control 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 223
• Stopping operation 223
• This mode is used to define actuator operations when the system stops 223
• When system is in stop mode normal operation stop 223
• 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 224
• Stop due to malfunction 224
• High pressure protection control 225
• In cooling operation the following control is performed in the entire system pc_max indicates the maximum value within the system 225
• Protection control 225
• 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 225
• 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 226
• In cooling operation because of common low pressure the following control is performed in the system 226
• Low pressure protection control 226
• This low pressure protection control is used to protect compressors against the transient decrease of low pressure 226
• Pe_min indicates the minimum value within the system 227
• When occurring 4 times within 30 min the malfunction code e4 is output 227
• Contents the following control is performed for each compressor of single unit as well as multi units 228
• Discharge pipe protection control 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 228
• This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 228
• When occurring 4 times within 30 min the malfunction code e4 is displayed 228
• After 10 min 229
• Applicable std compressor stops 229
• Discharge pipe temp 229
• F continues for 10 min or more 229
• Htds value of std compressor discharge pipe temperature tds compensated with outdoor air temperature tp value of compressor port temperature calculated by t 229
• In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 229
• Inv compressor 229
• 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 229
• Inverter protection control 229
• Protection control not limited 229
• Std compressor 229
• Te and suction superheated degree 229
• Inverter overcurrent protection control perform the following control of integrated as well as multi units for each inv compressor 230
• Inverter fin temperature control perform the following control of integrated as well as multi units for each inv compressor 231
• Std compressor overload protection 231
• This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 231
• 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 233
• Backup operation 233
• Demand operation 233
• Heating operation is prohibited above 75 f ambient temperature 233
• Heating operation prohibition 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 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 233
• Other control 233
• Installation process 234
• Procedure and outline 234
• Test operation 234
• Check work prior to turn power supply on 235
• 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 236
• Check on amount of refrigerant charge 236
• Check the stop valves for conditions 236
• Check to be sure the stop valves are under the following conditions 236
• Correction amount with indoor unit correction amount with a total capacity of indoor units 236
• Has the additional refrigerant charging amount been recorded on the precautions for servicing label 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 222 236
• Is the correct quantity of refrigerant charged the following method is available for additional charging of refrigerant 1 calculate additional refrigerant quantity 236
• Open open open 236
• Another switch box is provided on the front left side of the unit but it requires no field settings 237
• Be sure to turn the power on 6 hours before starting operation to protect compressors to power on crankcase heater 237
• Before starting the normal operation after the completion of check operations make sure indoor and outdoor units operate normally 237
• Check for normal operation 237
• Check the led display of the outdoor unit pc board 237
• Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 237
• Conduct check operations 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 237
• Make field settings with outdoor unit pc board 237
• Reyq72 120pydn reyq72 144ptju remq72 120pydn remq72 120ptju 237
• Test operation sius34 801a_b 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 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 237
• Turn outdoor unit and indoor unit power on 237
• Turn power on 237
• Vrviii r 410a heat recovery 60hz 237
• After finishing piping work carry out air tight test and vacuum drying 238
• Air tight test and vacuum drying 238
• Gauge manifold charge hose valve 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 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 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 238
• Sius34 801a_b test operation 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 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 238
• Vrviii r 410a heat recovery 60hz 223 238
• Pipe insulation 239
• 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 240
• Sius34 801a_b test operation 240
• Vrviii r 410a heat recovery 60hz 225 240
• Additional refrigerant charge and check operation 241
• Before working 241
• Checking of device and installation conditions 241
• Liquid pipe shutoff valve 242
• 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 242
• P type 96p type 120p 144p type 242
• Sius34 801a_b test operation 242
• Vrviii r 410a heat recovery 60hz 227 242
• Φ 3 4 242
• Φ 3 8 the 120p type rxyq144ptju corresponds to the φ 1 2 diameter onsite piping using the accessory pipe 242
• 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 243
• Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 h1p off default 243
• Procedure of adding refrigerant charging and check operation 243
• Test operation sius34 801a_b 243
• Use an insulated rod to operate the push buttons via the electrical components box inspection door 243
• Vrviii r 410a heat recovery 60hz 243
• 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 243
• Automatic refrigerant charging operation procedure note the led signals represent the following 246
• Blinking 246
• Charge hose 246
• Field pipings refrigerant flow when charging 246
• H1p h2p h3p h4p h5p h6p h7p h h i h h h h 246
• Measuring device 246
• Mode button bs1 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 246
• R 410a tank with siphon 246
• Shutoff valve service port 246
• Sius34 801a_b test operation 246
• Valve a 246
• Valve a to bs indoor unit 246
• Valve b 246
• Valve c 246
• Vrviii r 410a heat recovery 60hz 231 246
• 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 248
• Remote controller heating mode malfunction code 248
• Sius34 801a_b test operation 248
• 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 248
• Vrviii r 410a heat recovery 60hz 233 248
• Before test run 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 250
• Note if any malfunction codes other than the above are displayed check the service manual for proper procedure 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 250
• Onsite settings 250
• Remote controller displays malfunction code 250
• Test run 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 250
• 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 250
• Caution for refrigerant leaks 251
• Checks after test run 251
• Test run 251
• 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 253
• Follow local code requirements ashrai 15 2007 ashrai 34 2007 253
• Operation when power is turned on 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 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 253
• When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 253
• When turning on power for the first time 253
• When turning on power the second time and subsequent 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 253
• 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 255
• 2 set mode display led leds display mode according to the setting 255
• 3 mode setting switch used to change mode 255
• 4 local setting switch used to make field settings 255
• Outdoor unit pc board 255
• Outdoor unit pc board layout 255
• Field setting 256
• Field setting from outdoor unit 256
• 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 256
• For setting items of 1 refer to detailed information provided on page 249 onward 257
• Caution 258
• Initial conditions of dip switches 258
• Setting at replacement by spare pc board 258
• Setting by dip switches 258
• Detail of ds1 1 4 ds2 1 4 setting 259
• Detail of ds1 1 4 ds2 1 4 settingmulti unit 261
• 7 7 7 7 7 7 9 262
• 7 8 7 7 7 7 7 262
• 7 8 7 7 7 7 8 262
• Setting by push button switches 262
• 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 263
• 7 8 7 7 7 7 263
• A setting mode 1 263
• Field setting sius34 801a_b 263
• This mode is used to set and check the following items 263
• Vrviii r 410a heat recovery 60hz 263
• B setting mode 2 264
• Bs5 rewiring 265
• The numbers in the no column represent the number of times to press the set bs2 button 265
• 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 268
• 7 7 7 7 7 268
• 7 7 7 7 8 268
• 7 7 7 8 7 268
• 7 7 7 8 8 268
• 7 7 8 7 7 268
• 7 7 8 7 8 268
• 7 7 8 8 7 268
• 7 7 8 8 8 268
• 7 8 7 7 7 268
• 7 8 7 7 8 268
• 7 8 7 8 7 268
• 7 8 7 8 8 268
• 7 8 8 7 7 268
• 7 8 8 7 8 268
• 7 8 8 8 7 268
• 7 8 8 8 8 268
• 8 7 7 7 7 268
• 8 7 8 7 7 268
• 8 7 8 7 8 268
• 8 7 8 8 7 268
• 8 8 7 7 8 268
• C monitor mode 268
• Sius34 801a_b field setting 268
• The numbers in the no column represent the number of times to press the set bs2 button 268
• Vrviii r 410a heat recovery 60hz 253 268
• 7 7 7 7 7 269
• 7 7 7 7 8 269
• 7 7 7 7 9 269
• 7 7 7 8 7 269
• 7 7 7 9 7 269
• 7 7 8 7 7 269
• 7 7 9 7 7 269
• 7 8 7 7 7 269
• Cool heat mode switching 270
• Example of transmission line connection example of connecting transmission wiring connect the transmission wirings as shown in the fig 1 270
• Set cool heat separately for each bs unit by cool heat selector 270
• Set remote controller change over switch ss1 ss2 as following 270
• When using cool heat selector connect to the terminal a b and c on the terminal block of the electric parts box 270
• When using cool heat selector turn this switch to the bs side 270
• Setting of low noise operation 271
• Setting of low noise operation and demand operation 271
• Image of operation in the case of a 272
• Image of operation in the case of a and b 272
• Image of operation in the case of b 272
• Sius34 801a_b field setting 272
• Vrviii r 410a heat recovery 60hz 257 272
• 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 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 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 273
• Setting of demand operation 273
• Image of operation in the case of a 274
• Image of operation in the case of a and b 274
• Image of operation in the case of b 274
• Sius34 801a_b field setting 274
• Vrviii r 410a heat recovery 60hz 259 274
• Detailed setting procedure of low noise operation and demand control 275
• Setting of refrigerant recovery mode 277
• Setting of vacuuming mode 277
• Check operation detail 278
• Check operation function 278
• Emergency operation 279
• Disabling the compressor 1 on the right side from operating set no 38 of setting mode 2 to disable compressor 1 operation 280
• Disabling the compressor 2 on the left side from operating set no 39 of setting mode 2 to disable compressor 2 operation 280
• Disabling the outdoor unit 1 to operate set no 38 of setting mode 2 to disable outdoor unit 1operation 280
• Disabling the outdoor unit 2 from operating set no 39 of setting mode 2 to disable outdoor unit 2 operation 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 280
• Sius34 801a_b field setting 280
• Vrviii r 410a heat recovery 60hz 265 280
• Cancel disabling the compressor 1 on the right side from operating set no 38 disable compressor 1 operation of setting mode 2 to off 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 281
• Cancel of emergency operation to cancel the emergency operation conduct the following setting return to factory setting 281
• Field setting sius34 801a_b 281
• Vrviii r 410a heat recovery 60hz 281
• Cancel disabling the outdoor unit 1 from operating set no 38 disable outdoor unit 1 operation of setting mode 2 to off 282
• Cancel disabling the outdoor unit 2 from operating set no 39 disable outdoor unit 2 operation of setting mode 2 to off 282
• 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 282
• Sius34 801a_b field setting 282
• Vrviii r 410a heat recovery 60hz 267 282
• 0prevention of small heating in non operating unit 283
• 1reduction of cooling heating selection time of bs units 283
• 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 99 284
• Drain pump control 91 284
• Indoor unit 284
• Part 4 284
• Part 4 indoor unit 284
• Specifications 70 2 refrigerant circuit 84 3 operation flow chart 85 4 thermostat sensor in remote controller 87 284
• Ceiling mounted cassette type multi flow 285
• Specifications 285
• Ceiling mounted cassette type multi flow 286
• Indoor unit 271 286
• Sius34 801a_b specifications 286
• Available in april 2008 287
• Indoor unit 287
• Specifications sius34 801a_b 287
• Way ceiling mounted cassette unit 2 2 287
• Indoor unit 273 288
• Sius34 801a_b specifications 288
• Way ceiling mounted cassette unit 2 2 288
• Indoor unit 289
• Slim ceiling mounted duct type 289
• Specifications sius34 801a_b 289
• Indoor unit 275 290
• Sius34 801a_b specifications 290
• Slim ceiling mounted duct type 290
• Ceiling mounted built in type 291
• Indoor unit 291
• Specifications sius34 801a_b 291
• Ceiling mounted built in type 292
• Indoor unit 277 292
• Sius34 801a_b specifications 292
• Ceiling mounted duct type 293
• Indoor unit 293
• Specifications sius34 801a_b 293
• Ceiling suspended type 294
• Indoor unit 279 294
• Sius34 801a_b specifications 294
• Indoor unit 295
• Specifications sius34 801a_b 295
• Wall mounted type 295
• Indoor unit 281 296
• Sius34 801a_b specifications 296
• Wall mounted type 296
• Floor standing type 297
• Indoor unit 297
• Specifications sius34 801a_b 297
• Concealed floor standing type 298
• Indoor unit 283 298
• Sius34 801a_b specifications 298
• Fxfq fxzq fxdq fxsq fxmq fxhq fxaq fxlq fxnq 299
• Refrigerant circuit 299
• 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 300
• 6 the fxcq fxfq fxkq and fxsq series have the drain pump as standard equipment 300
• Led in remote controller turns on 300
• Operation flow chart 300
• Turn on power supply 300
• Fan operation 301
• Heating operation 301
• Indoor unit 301
• Microcomputer dry display 301
• Operation flow chart sius34 801a_b 301
• Cooling 302
• Thermostat sensor in remote controller 302
• Heating 303
• 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 304
• Indoor unit 289 304
• Sius34 801a_b thermostat sensor in remote controller 304
• Thermostat control in dry operation 304
• Thermostat control while in normal operation 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 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 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 304
• While in dry operation the thermostat control is conducted according to a return air temperature at the time of starting the dry operation 304
• Cooling thermostat on cooling thermostat off 305
• Ex when automatic cooling temperature is set to 80 f 305
• Factory setting 305
• Heating thermostat off 305
• Heating thermostat on 305
• Indoor unit 305
• Set heating temperature a d f set cooling temperature a f 305
• Thermostat control with operation mode set to auto 305
• Thermostat sensor in remote controller sius34 801a_b 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 305
• Drain pump control 306
• When the float switch is tripped and af is displayed on the remote controller 307
• When the float switch is tripped during heating operation 307
• Control of electronic expansion valve 308
• 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 309
• Freeze prevention 309
• Freeze prevention by off cycle indoor unit 309
• Freeze prevention sius34 801a_b 309
• Indoor unit 309
• 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 309
• Heater control optional pc board krp1b is required 310
• 1 l or ll only on fxfq models 311
• List of louver operations 311
• Louvers operate as shown in table below 311
• Hot start control in heating operation only 312
• Louver control for preventing ceiling dirt 313
• Field setting 314
• Field setting from remote controller 314
• Wireless remote controller indoor unit 315
• Simplified remote controller 316
• Field setting sius34 801a_b 317
• Indoor unit 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 317
• Setting contents and code no vrv indoor unit 317
• 1 static pressure selection 318
• Applicable range of field setting 318
• Indoor unit 303 318
• Sius34 801a_b field setting 318
• 1 filter sign setting 319
• 2 ultra long life filter sign setting 319
• 3 selection of thermistor 319
• 4 filter cleaning displayed or not displayed 319
• Detailed explanation of setting modes 319
• If switching the filter sign on time set as given in the table below set time 319
• Select the thermistor to control room temperature 319
• Setting table 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 319
• When a ultra long life filter is installed the filter sign timer setting must be changed 319
• Whether or not to display filter cleaning after operation of certain duration can be selected 319
• 5 optional output switching 320
• 6 external on off input 320
• 7 thermostat switching 320
• 8 air flow setting when heating thermostat is off 320
• Differential value during thermostat on off control can be changed for details refer to 4 thermostat control while in normal operation on page 289 320
• Setting table 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 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 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 320
• 10 auto restart after power failure reset 321
• 11 air flow when cooling thermostat is off 321
• 12 setting of normal air flow 321
• 9 setting of operation mode to auto 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 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 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 321
• Sets airflow to ll air flow when cooling thermostat is off 321
• The automatic operation mode setting is made by the use of the operation mode selector button 321
• This setting makes it possible to change differential values for mode selection while in automatic operation mode 321
• 13 air flow direction setting 322
• 14 setting of air flow direction adjustment range 322
• 15 setting of the static pressure selection for fxdq model 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 01 322
• Direction setting according to the respective purpose 322
• In the case of fxfq12 30 322
• In the case of fxfq36 322
• Make the following 322
• Set the 322
• Setting table 322
• Some indoor unit models are not equipped with draft prevention upward function 322
• 16 humidification when heating thermostat is off 323
• 17 setting of direct duct connection 323
• 18 interlocked operation between humidifier and drain pump 323
• 19 individual setting of ventilation 323
• Set to perform individual operation of heat reclaim ventilation using the remote controller central unit if the option is available 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 323
• Used to interlock the humidifier with the drain pump when water is drained out of the unit this setting is unnecessary 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 323
• Brc1d type 324
• Centralized control group no setting 324
• Brc7c type brc4c type brc7e type 325
• 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 326
• Group no setting example 326
• Indoor unit 311 326
• Sius34 801a_b field setting 326
• Contents of control modes 327
• Setting of operation control mode from remote controller local setting 327
• Do not select timer operation possible by remote controller if not using a remote controller as it will not be functional 1 factory setting 328
• How to select operation mode 328
• 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 328
• Part 5 troubleshooting 330
• Symptom based troubleshooting 18 2 troubleshooting by remote controller 21 330
• Troubleshooting by indication on the remote controller 36 330
• Troubleshooting op central remote controller 46 331
• Troubleshooting op unified on off controller 53 331
• Symptom based troubleshooting 333
• Inspection mode 336
• Local setting mode service mode 336
• Normal mode 336
• Test operation mode 336
• The following modes can be selected by using the inspection test operation button on the remote control 336
• The inspection test button 336
• Troubleshooting by remote controller 336
• Explanation 337
• Self diagnosis by wired remote controller 337
• In the case of brc7c type brc7e type brc4c type 338
• Self diagnosis by wireless remote controller 338
• The lower digit of the code changes as shown below when the up and down buttons are pressed 339
• 1 f c j 341
• A a 1 a a 3 a 9 2 a a 5 a a a a 9 6 341
• A f h j l p l 6 3 341
• Inspection mode 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 341
• Troubleshooting 341
• Troubleshooting by remote controller sius34 801a_b 341
• How to enter the service mode 342
• Remote controller service mode 342
• Service mode operation method 342
• Normal operation mode 344
• Press the check test button 4 times 344
• Remote controller self diagnosis function 344
• Test run mode 344
• The system operates for malfunction codes indicated in black squares however be sure to check and repair 346
• Detail description on next page 347
• Malfunction code 347
• Push the mode bs1 button and returns to setting mode 1 347
• Push the return bs3 button and switches to the initial status of monitor mode 347
• Push the return bs3 button once to display first digit of malfunction code 347
• Push the set bs2 button and set the led display to a setting item 347
• Push the set bs2 button once to display malfunction location 347
• Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 347
• Push the set bs2 button once to display second digit of malfunction code 347
• To enter the monitor mode push the mode bs1 button when in setting mode 1 347
• Troubleshooting 347
• Troubleshooting by remote controller sius34 801a_b 347
• Sius34 801a_b troubleshooting by remote controller 348
• Troubleshooting 333 348
• Detail description on next page 349
• Push the mode bs1 button and returns to setting mode 1 349
• Push the return bs3 button and switches to the initial status of monitor mode 349
• Push the return bs3 button once to display first digit of malfunction code 349
• Push the set bs2 button and set the led display to a setting item 349
• Push the set bs2 button once to display malfunction location 349
• Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 349
• Push the set bs2 button once to display second digit of malfunction code 349
• Refer to page 106 254 for monitor mode 349
• To enter the monitor mode push the mode bs1 button when in setting mode 1 349
• Troubleshooting 349
• Troubleshooting by remote controller sius34 801a_b 349
• Sius34 801a_b troubleshooting by remote controller 350
• Troubleshooting 335 350
• Applicable models 351
• Indoor unit error of external protection device 351
• Malfunction decision conditions 351
• Method of malfunction detection 351
• Remote controller display 351
• Supposed causes 351
• Troubleshooting 351
• Troubleshooting by indication on the remote controller 351
• Indoor unit pc board defect 352
• Applicable models 353
• Indoor unit malfunction of drain level control system s1l 353
• Malfunction decision conditions 353
• Method of malfunction detection 353
• Remote controller display 353
• Supposed causes 353
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 354
• Sius34 801a_b troubleshooting by indication on the remote controller 354
• Troubleshooting 354
• Troubleshooting 339 354
• Applicable models 355
• Indoor unit fan motor m1f lock overload 355
• Malfunction decision conditions 355
• Method of malfunction detection 355
• Remote controller display 355
• Supposed causes 355
• 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 356
• Are there any foreign matters around the fan 356
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 356
• Is the resistance between the pins not less than the judgment criteria 356
• Properly connect the connector no 356
• Remove the foreign matters 356
• Replace the fan motor 356
• Replace the fan motor no 356
• Replace the indoor unit pc board 356
• Sius34 801a_b troubleshooting by indication on the remote controller 356
• Troubleshooting 356
• Troubleshooting 341 356
• Turn off the power supply and then wait for a period of 10 minutes 356
• Applicable models 357
• Detected by no fan motor revolutions 357
• Faulty indoor fan motor broken wires faulty contact 357
• Fxhq fxdq 357
• Indoor unit malfunction of indoor unit fan motor 357
• Malfunction decision conditions 357
• Method of malfunction detection 357
• No fan revolutions detected even at maximum voltage 357
• Remote controller display 357
• Supposed causes 357
• Troubleshooting 357
• Applicable models 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 358
• Individual power supply for the fan turns off 358
• Individual power supply for the indoor unit fan does not turn on while in operation 358
• Indoor unit overload overcurrent lock of indoor unit fan motor 358
• Malfunction decision conditions 358
• Method of malfunction detection 358
• Remote controller display 358
• Supposed causes 358
• Troubleshooting 358
• Applicable models 359
• Indoor unit malfunction of louver motor m1s 359
• Malfunction decision conditions 359
• Method of malfunction detection 359
• Remote controller display 359
• Supposed causes 359
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 360
• Sius34 801a_b troubleshooting by indication on the remote controller 360
• Troubleshooting 360
• Troubleshooting 345 360
• Applicable models 361
• Indoor unit electronic expansion valve malfunction dust clogging 361
• Malfunction decision conditions 361
• Method of malfunction detection 361
• Remote controller display 361
• Supposed causes 361
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 362
• Sius34 801a_b troubleshooting by indication on the remote controller 362
• Troubleshooting 362
• Troubleshooting 347 362
• Indoor unit malfunction of electronic expansion valve coil 363
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 364
• Sius34 801a_b troubleshooting by indication on the remote controller 364
• Troubleshooting 349 364
• Applicable models 365
• Fxfq fxsq fxmq fxdq 365
• Humidifier unit optional accessory leaking defect of drain pipe upward slope etc defect of indoor unit pc board 365
• Indoor unit drain level above limit 365
• Malfunction decision conditions 365
• Method of malfunction detection 365
• Remote controller display 365
• Supposed causes 365
• Troubleshooting 365
• Water leakage is detected based on float switch on off operation while the compressor is in non operation 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 365
• All indoor unit models 367
• Applicable models 367
• Defect of thermistor r2t for liquid pipe defect of indoor unit pc board 367
• Indoor unit malfunction of thermistor r2t for heat exchanger 367
• M temperature of the heat exchanger thermistor 367
• Malfunction decision conditions 367
• Method of malfunction detection 367
• Refer to the thermistor resistance temperature characteristics table on page 523 367
• Remote controller display 367
• Supposed causes 367
• Troubleshooting 367
• When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 367
• All indoor unit models 368
• Applicable models 368
• Defect of indoor unit thermistor r3t for gas pipe defect of indoor unit pc board 368
• Indoor unit malfunction of thermistor r3t for gas pipes 368
• Malfunction decision conditions 368
• Method of malfunction detection 368
• Refer to the thermistor resistance temperature characteristics table on page 529 368
• Remote controller display 368
• Supposed causes 368
• Temperature of the gas pipe thermistor 368
• Troubleshooting 368
• When the gas pipe thermistor becomes disconnected or shorted while the unit is running 368
• Aii indoor unit models 369
• Applicable models 369
• Defect of indoor unit thermistor r1t for air inlet defect of indoor unit pc board 369
• Indoor unit malfunction of thermistor r1t for suction air 369
• Malfunction decision conditions 369
• Malfunction detection is carried out by temperature detected by suction air temperature thermistor temperature detected by the suction air temperature thermistor 369
• Method of malfunction detection 369
• Refer to the thermistor resistance temperature characteristics table on page 529 369
• Remote controller display 369
• Supposed causes 369
• Troubleshooting 369
• When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 369
• Applicable models 370
• Indoor unit malfunction of thermostat sensor in remote controller 370
• Malfunction decision conditions 370
• Method of malfunction detection 370
• Remote controller display 370
• Supposed causes 370
• Troubleshooting 370
• Outdoor unit pc board defect 371
• Outdoor unit detection of ground leakage by leak detection pc board ass y 372
• Normal 373
• Troubleshooting 373
• Troubleshooting by indication on the remote controller sius34 801a_b 373
• Applicable models 374
• Malfunction decision conditions 374
• Method of malfunction detection 374
• Outdoor unit actuation of high pressure switch 374
• Remote controller display 374
• Supposed causes 374
• 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 375
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 375
• Troubleshooting 375
• Troubleshooting by indication on the remote controller sius34 801a_b 375
• Outdoor unit actuation of low pressure sensor 376
• 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 377
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 377
• Troubleshooting 377
• Troubleshooting by indication on the remote controller sius34 801a_b 377
• Applicable models 378
• Malfunction decision conditions 378
• Method of malfunction detection 378
• Outdoor unit inverter compressor motor lock 378
• Remote controller display 378
• Supposed causes 378
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 379
• Troubleshooting 379
• Troubleshooting by indication on the remote controller sius34 801a_b 379
• Applicable models 380
• Malfunction decision conditions 380
• Method of malfunction detection 380
• Outdoor unit std compressor motor overcurrent lock 380
• Remote controller display 380
• Supposed causes 380
• 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 381
• Troubleshooting 381
• Troubleshooting by indication on the remote controller sius34 801a_b 381
• Applicable models 382
• Malfunction decision conditions 382
• Method of malfunction detection 382
• Outdoor unit malfunction of outdoor unit fan motor 382
• Remote controller display 382
• Supposed causes 382
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 383
• Troubleshooting 383
• Troubleshooting by indication on the remote controller sius34 801a_b 383
• Sius34 801a_b troubleshooting by indication on the remote controller 384
• Troubleshooting 384
• Troubleshooting 369 384
• Outdoor unit malfunction of moving part of electronic expansion valve y1e y5e 385
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 386
• Sius34 801a_b troubleshooting by indication on the remote controller 386
• Troubleshooting 386
• Troubleshooting 371 386
• Outdoor unit abnormal discharge pipe temperature 387
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 388
• Refer to thermistor resistance temperature characteristics table on p529 388
• Sius34 801a_b troubleshooting by indication on the remote controller 388
• Troubleshooting 388
• Troubleshooting 373 388
• Applicable models 389
• Malfunction decision conditions 389
• Method of malfunction detection 389
• Outdoor unit refrigerant overcharged 389
• Remote controller display 389
• Supposed causes 389
• Troubleshooting 389
• Outdoor unit abnormal outdoor fan motor signal 390
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 391
• Troubleshooting 391
• Troubleshooting by indication on the remote controller sius34 801a_b 391
• Applicable models 392
• Defective thermistor connection defect of thermistor r1t for outdoor air defect of outdoor unit pc board a1p 392
• Malfunction decision conditions 392
• Method of malfunction detection 392
• Outdoor unit malfunction of thermistor r1t for outdoor air 392
• Refer to the thermistor resistance temperature characteristics table on page 523 392
• Remote controller display 392
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 392
• Supposed causes 392
• Temperature detected by the outdoor air thermistor 392
• Troubleshooting 392
• When the outside air temperature thermistor has short circuit or open circuit 392
• Outdoor unit current sensor malfunction 393
• Sius34 801a_b troubleshooting by indication on the remote controller 394
• Troubleshooting 394
• Troubleshooting 379 394
• Applicable models 395
• Defect of thermistor r31t r32t for outdoor unit discharge pipe defect of outdoor unit pc board a1p defect of thermistor connection 395
• Malfunction decision conditions 395
• Method of malfunction detection 395
• Outdoor unit malfunction of discharge pipe thermistor r31 32t 395
• Refer to the thermistor resistance temperature characteristics table on page 523 395
• Remote controller display 395
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 395
• Supposed causes 395
• Temperature detected by discharge pipe temperature thermistor 395
• The alarm indicator is displayed when the fan is being used also 395
• Troubleshooting 395
• When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 395
• Applicable models 396
• Defective connection of thermistor defective thermistor defective outdoor unit pc board 396
• In operation when a thermistor is disconnected or short circuits 396
• Malfunction decision conditions 396
• Method of malfunction detection 396
• Outdoor unit malfunction of temperature sensor for heat exchanger gas r2t or r11t 396
• Refer to the thermistor resistance temperature characteristics table on page 523 396
• Remote controller display 396
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 396
• Supposed causes 396
• Temperature detected by each thermistor 396
• Troubleshooting 396
• Applicable models 397
• Defect of thermistor r8t or r10t for outdoor unit suction pipe defect of outdoor unit pc board a1p defect of thermistor connection 397
• Malfunction decision conditions 397
• Method of malfunction detection 397
• Outdoor unit malfunction of thermistor r8t or r10t for suction pipe 397
• Refer to the thermistor resistance temperature characteristics table on page 523 397
• Remote controller display 397
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 397
• Supposed causes 397
• Temperature detected by the suction pipe temperature thermistor 397
• Troubleshooting 397
• When a short circuit or an open circuit in the suction pipe temperature thermistor is detected 397
• Applicable models 398
• Defect of thermistor r4t or r12t for outdoor unit coil defect of outdoor unit pc board a1p defect of thermistor connection 398
• Malfunction decision conditions 398
• Method of malfunction detection 398
• Outdoor unit malfunction of thermistor r4t or r12t for outdoor unit heat exchanger 398
• Refer to the thermistor resistance temperature characteristics table on page 523 398
• Remote controller display 398
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 398
• Supposed causes 398
• Temperature detected by the heat exchanger thermistor 398
• Troubleshooting 398
• When a short circuit or an open circuit in the heat exchange thermistor is detected 398
• Applicable models 399
• Faulty liquid pipe thermistor 1 r6t r9t or r14t faulty outdoor unit pc board defect of thermistor connection 399
• Malfunction decision conditions 399
• Malfunction is detected according to the temperature detected by liquid pipe thermistor 399
• Method of malfunction detection 399
• Outdoor unit malfunction of liquid pipe thermistor 1 r6t r9t or r14t 399
• Refer to thermistor resistance temperature characteristics table on p523 399
• Remote controller display 399
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 399
• Supposed causes 399
• Troubleshooting 399
• When the liquid pipe thermistor is short circuited or open 399
• Applicable models 400
• Faulty liquid pipe thermistor 2 r7t or r15t faulty outdoor unit pc board defect of thermistor connection 400
• Malfunction decision conditions 400
• Malfunction is detected according to the temperature detected by liquid pipe thermistor 400
• Method of malfunction detection 400
• Outdoor unit malfunction of liquid pipe thermistor 2 r7t or r15t 400
• Refer to thermistor resistance temperature characteristics table on p523 400
• Remote controller display 400
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 400
• Supposed causes 400
• Troubleshooting 400
• When the liquid pipe thermistor is short circuited or open 400
• Applicable models 401
• Faulty subcooling heat exchanger gas pipe thermistor r5t or r13t faulty outdoor unit pc board 401
• Malfunction decision conditions 401
• Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 401
• Method of malfunction detection 401
• Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t or r13t 401
• Refer to thermistor resistance temperature characteristics table on p523 401
• Remote controller display 401
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 401
• Supposed causes 401
• Troubleshooting 401
• When the subcooling heat exchanger gas pipe thermistor is short circuited or open 401
• Outdoor unit malfunction of high pressure sensor 402
• 1 pressure sensor subject to malfunction code 403
• 2 refer to pressure sensor pressure voltage characteristics table on p525 403
• 2 voltage measurement point 403
• Electric symbol pressure sensor subject to malfunction code 403
• Ja high pressure sensor s1nph 403
• Malfunction code 403
• Troubleshooting 403
• Troubleshooting by indication on the remote controller sius34 801a_b 403
• Outdoor unit malfunction of low pressure sensor 404
• 1 voltage measurement point 405
• 2 refer to pressure sensor pressure voltage characteristics table on p525 405
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 405
• Troubleshooting 405
• Troubleshooting by indication on the remote controller sius34 801a_b 405
• Applicable models 406
• Malfunction decision conditions 406
• Method of malfunction detection 406
• Outdoor unit defective inverter pc board 406
• Remote controller display 406
• Supposed causes 406
• 1 list of inverter pc boards 407
• Troubleshooting 407
• Troubleshooting by indication on the remote controller sius34 801a_b 407
• Outdoor unit malfunction of inverter radiating fin temperature rise 408
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 409
• Troubleshooting 409
• Troubleshooting by indication on the remote controller sius34 801a_b 409
• Outdoor unit momentary overcurrent of inverter compressor 411
• Compressor inspection 412
• Troubleshooting 412
• Applicable models 413
• Malfunction decision conditions 413
• Method of malfunction detection 413
• Outdoor unit momentary overcurrent of inverter compressor 413
• Remote controller display 413
• Supposed causes 413
• Output current check 414
• Troubleshooting 414
• Applicable models 415
• Malfunction decision conditions 415
• Method of malfunction detection 415
• Outdoor unit inverter compressor starting failure 415
• Remote controller display 415
• Supposed causes 415
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 416
• Sius34 801a_b troubleshooting by indication on the remote controller 416
• Troubleshooting 416
• Troubleshooting 401 416
• Troubleshooting 417
• Applicable models 418
• Malfunction decision conditions 418
• Method of malfunction detection 418
• Outdoor unit malfunction of transmission between inverter and control pc board 418
• Remote controller display 418
• Supposed causes 418
• 1 list of inverter pc boards 419
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 419
• Troubleshooting 419
• Troubleshooting by indication on the remote controller sius34 801a_b 419
• Sius34 801a_b troubleshooting by indication on the remote controller 420
• Troubleshooting 420
• Troubleshooting 405 420
• Applicable models 421
• Malfunction decision conditions 421
• Method of malfunction detection 421
• Outdoor unit inverter over ripple protection 421
• Remote controller display 421
• Supposed causes 421
• Sius34 801a_b troubleshooting by indication on the remote controller 422
• Troubleshooting 422
• Troubleshooting 407 422
• Applicable models 423
• Defect of radiator fin temperature sensor defect of inverter pc board faulty inverter compressor faulty fan motor 423
• Malfunction decision conditions 423
• Method of malfunction detection 423
• Outdoor unit malfunction of inverter radiating fin temperature rise sensor 423
• Remote controller display 423
• Resistance of radiation fin thermistor is detected when the compressor is not operating 423
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 423
• Supposed causes 423
• Troubleshooting 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 423
• Inverter pc board for compressor 424
• Refer to thermistor resistance temperature characteristics table on p523 424
• Outdoor unit faulty field setting after replacing main pc board or faulty combination of pc board 425
• 1 list of inverter pc boards 426
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 426
• Sius34 801a_b troubleshooting by indication on the remote controller 426
• Troubleshooting 426
• Troubleshooting 411 426
• Applicable models 427
• Malfunction decision conditions 427
• Method of malfunction detection 427
• Outdoor unit gas shortage alert 427
• Remote controller display 427
• Supposed causes 427
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 428
• Sius34 801a_b troubleshooting by indication on the remote controller 428
• Troubleshooting 428
• Troubleshooting 413 428
• Applicable models 429
• Malfunction decision conditions 429
• Method of malfunction detection 429
• Power supply reverse phase power supply open phase defect of outdoor pc board a1p 429
• Remote controller display 429
• Reverse phase open phase 429
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 429
• Supposed causes 429
• The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 429
• Troubleshooting 429
• When a significant phase difference is made between phases 429
• Applicable models 430
• Malfunction decision conditions 430
• Method of malfunction detection 430
• Outdoor unit power supply insufficient or instantaneous failure 430
• Remote controller display 430
• Supposed causes 430
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 431
• Troubleshooting 431
• Troubleshooting by indication on the remote controller sius34 801a_b 431
• Sius34 801a_b troubleshooting by indication on the remote controller 432
• Troubleshooting 432
• Troubleshooting 417 432
• Applicable models 433
• Check operation is executed or not 433
• Check operation is not executed 433
• Malfunction decision conditions 433
• Malfunction is decided when the unit starts operation without check operation 433
• Method of malfunction detection 433
• Outdoor unit check operation not executed 433
• Remote controller display 433
• Rxyq72p 240pydn ptju reyq72p 240pydn ptju 433
• Supposed causes 433
• Troubleshooting 433
• Applicable models 434
• Malfunction decision conditions 434
• Malfunction of transmission between indoor units 434
• Method of malfunction detection 434
• Remote controller display 434
• Supposed causes 434
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 435
• Caution 435
• Troubleshooting 435
• Troubleshooting by indication on the remote controller sius34 801a_b 435
• 1 2 see the chart and footnote on p422 3 4 see the chart and footnote on p423 436
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 436
• Caution 436
• Sius34 801a_b troubleshooting by indication on the remote controller 436
• Troubleshooting 421 436
• 1 voltage measurement point 437
• 2 refer to pressure sensor pressure voltage characteristics table on p525 437
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 437
• Caution 437
• Troubleshooting 437
• Troubleshooting by indication on the remote controller sius34 801a_b 437
• 3 voltage measurement point 438
• 4 refer to pressure sensor pressure voltage characteristics table on p525 438
• Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 438
• Caution 438
• Sius34 801a_b troubleshooting by indication on the remote controller 438
• Troubleshooting 423 438
• All models of indoor units 439
• Applicable models 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 439
• Indoor unit malfunction of transmission between remote controller and indoor unit 439
• Malfunction decision conditions 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 439
• Method of malfunction detection 439
• Normal transmission does not continue for specified period 439
• Remote controller display 439
• Supposed causes 439
• Troubleshooting 439
• Applicable models 440
• Malfunction decision conditions 440
• Method of malfunction detection 440
• Outdoor unit transmission failure across outdoor units 440
• Remote controller display 440
• Supposed causes 440
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 441
• Troubleshooting 441
• Troubleshooting by indication on the remote controller sius34 801a_b 441
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 442
• Sius34 801a_b troubleshooting by indication on the remote controller 442
• Troubleshooting 442
• Troubleshooting 427 442
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 443
• Troubleshooting 443
• Troubleshooting by indication on the remote controller sius34 801a_b 443
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 444
• Sius34 801a_b troubleshooting by indication on the remote controller 444
• Troubleshooting 444
• Troubleshooting 429 444
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 445
• Troubleshooting 445
• Troubleshooting by indication on the remote controller sius34 801a_b 445
• All models of indoor units 446
• Applicable models 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 446
• Indoor unit malfunction of transmission between main and sub remote controllers 446
• Malfunction decision conditions 446
• Malfunction of transmission between main and sub remote controller connection between sub remote controllers defect of remote controller pc board 446
• Method of malfunction detection 446
• Normal transmission does not continue for specified period 446
• Remote controller display 446
• Supposed causes 446
• Troubleshooting 446
• Applicable models 447
• Indoor unit malfunction of transmission between indoor and outdoor units in the same system 447
• Malfunction decision conditions 447
• Method of malfunction detection 447
• Remote controller display 447
• Supposed causes 447
• Troubleshooting 447
• Applicable models 448
• Improper combination of indoor and outdoor units indoor units and remote controller 448
• Malfunction decision conditions 448
• Method of malfunction detection 448
• Remote controller display 448
• Supposed causes 448
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 449
• Troubleshooting 449
• Troubleshooting by indication on the remote controller sius34 801a_b 449
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 450
• Sius34 801a_b troubleshooting by indication on the remote controller 450
• Troubleshooting 450
• Troubleshooting 435 450
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 451
• Troubleshooting 451
• Troubleshooting by indication on the remote controller sius34 801a_b 451
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 452
• Sius34 801a_b troubleshooting by indication on the remote controller 452
• Troubleshooting 452
• Troubleshooting 437 452
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 453
• Troubleshooting 453
• Troubleshooting by indication on the remote controller sius34 801a_b 453
• Applicable models 455
• Malfunction decision conditions 455
• Malfunction of transmission between centralized controller and indoor unit 455
• Method of malfunction detection 455
• Remote controller display 455
• Supposed causes 455
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 456
• Sius34 801a_b troubleshooting by indication on the remote controller 456
• Troubleshooting 456
• Troubleshooting 441 456
• Troubleshooting 457
• Troubleshooting by indication on the remote controller sius34 801a_b 457
• All models of indoor units rxyq72p 240pydn ptju reyq72p 240pydn ptju 458
• Applicable models 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 458
• Malfunction decision conditions 458
• Method of malfunction detection 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 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 458
• Remote controller display 458
• Supposed causes 458
• System is not set yet 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 458
• Troubleshooting 458
• Malfunction of system refrigerant system address undefined 459
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 460
• Sius34 801a_b troubleshooting by indication on the remote controller 460
• Troubleshooting 460
• Troubleshooting 445 460
• Pc board defect 461
• Troubleshooting op central remote controller 461
• Troubleshooting op central remote controller 4 461
• Malfunction of transmission between optional controllers for centralized control 462
• Troubleshooting 463
• Troubleshooting op central remote controller sius34 801a_b 463
• Applicable models 464
• Improper combination of optional controllers for centralized control 464
• Malfunction decision conditions 464
• Method of malfunction detection 464
• Remote controller display 464
• Supposed causes 464
• Troubleshooting 465
• Troubleshooting op central remote controller sius34 801a_b 465
• Address duplication improper setting 466
• Troubleshooting 467
• Troubleshooting op central remote controller sius34 801a_b 467
• Applicable models 468
• Malfunction decision conditions 468
• Method of malfunction detection 468
• Remote controller display 468
• Supposed causes 468
• Troubleshooting op unified on off controller 468
• Troubleshooting op unified on off controller 5 operation lamp blinks 468
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 469
• Troubleshooting 469
• Troubleshooting op unified on off controller sius34 801a_b 469
• Applicable models 470
• Display under centralized control blinks repeats single blink 470
• Malfunction decision conditions 470
• Method of malfunction detection 470
• Remote controller display 470
• Supposed causes 470
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 471
• Troubleshooting 471
• Troubleshooting op unified on off controller sius34 801a_b 471
• Sius34 801a_b troubleshooting op unified on off controller 472
• Troubleshooting 457 472
• Applicable models 473
• Central control address group no is not set for indoor unit improper control range setting switch improper wiring of transmission wiring 473
• Detect the malfunction according to diii net transmission data 473
• Display under centralized control blinks repeats double blink 473
• Malfunction decision conditions 473
• Method of malfunction detection 473
• Remote controller display 473
• Supposed causes 473
• Troubleshooting 473
• Troubleshooting op unified on off controller sius34 801a_b 473
• Under centralized control repeats double blink 473
• Unified on off controller 473
• When no central control addresses are set to indoor units when no indoor units are connected within the control range 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 474
• Check 1 474
• Check 2 474
• 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 474
• Sius34 801a_b troubleshooting op unified on off controller 474
• Troubleshooting 459 474
• Check 3 check the factors of overheat operation 475
• Identify the defective points referring to the failure factor analysis fta as follows 475
• Troubleshooting 475
• Troubleshooting op unified on off controller sius34 801a_b 475
• Check 4 power transistor check 476
• Pc board and circuit diagram 476
• Point of measurement and judgment criteria 476
• Preparation 476
• Sius34 801a_b troubleshooting op unified on off controller 476
• Troubleshooting 461 476
• U v w n3 476
• Check 5 check for causes of rise in high pressure 477
• Referring to the fault tree analysis fta shown below probe the faulty points 477
• Troubleshooting 477
• Troubleshooting op unified on off controller sius34 801a_b 477
• Check 6 check for causes of drop in low pressure 478
• Referring to the fault tree analysis fta shown below probe the faulty points 478
• Sius34 801a_b troubleshooting op unified on off controller 478
• Troubleshooting 463 478
• Check 7 broken wire check of the connecting wires 479
• 1 unit 1 unit 1 provided not provided 480
• 1 unit not provided 480
• 1 unit provided 480
• Central equipment connection pattern setting of master unit central setting connector 2 480
• Check 8 master unit central connector setting table 480
• Intelligent touch controller 480
• Pattern 480
• Sius34 801a_b troubleshooting op unified on off controller 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 480
• Troubleshooting 465 480
• Unit not provided 480
• Check 9 master slave unit setting table 481
• Combination of intelligent touch controller and central remote controller 481
• Troubleshooting 481
• Troubleshooting op unified on off controller sius34 801a_b 481
• 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 482
• Check 10 check for causes of wet operation 482
• Dirty evaporator 482
• Dirty filter 482
• Faulty crankcase heater 482
• Faulty fan motor 482
• Faulty indoor unit gas pipe thermistor 482
• Faulty indoor unit liquid pipe thermistor 482
• Faulty valve body 482
• Faulty valve coil 482
• Including faulty capacity setting 482
• Obstacles 482
• Overcharge of refrigerant 482
• Referring to the fault tree analysis fta shown below identify faulty points 482
• Refrigerant accumulation 482
• Sius34 801a_b troubleshooting op unified on off controller 482
• Troubleshooting 467 482
• Check 11 check for overcharge of refrigerant 483
• Cooling 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 483
• Heating 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 483
• Troubleshooting 483
• Troubleshooting op unified on off controller sius34 801a_b 483
• Check 12 check for shortage of refrigerant 484
• Cooling 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 484
• Heating 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 484
• Sius34 801a_b troubleshooting op unified on off controller 484
• Troubleshooting 469 484
• Check 13 vacuuming and dehydration procedure 485
• Check 14 list of inverter related malfunction codes 486
• Sius34 801a_b troubleshooting op unified on off controller 486
• Troubleshooting 471 486
• Compressor overcurrent electronic thermal 1 487
• Current 487
• Heavy current part power transmission etc 487
• Malfunction codes related to compressor current 487
• Max control 487
• P4 l1 l4 u2 p1 pj e5 l9 487
• Troubleshooting 487
• Troubleshooting op unified on off controller sius34 801a_b 487
• Weak current part 487
• Appendix 488
• List of electrical and functional parts 10 488
• Option list 18 488
• Part 6 488
• Part 6 appendix 488
• Piping diagrams 74 488
• Piping installation point 20 488
• 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 29 488
• Wiring diagrams for reference 87 488
• Heat pump 460v 489
• Outdoor unit 489
• Piping diagrams 489
• Rxyq72 96 120pydn 489
• Heat pump 230v rxyq72 96 120ptju 490
• Heat pump 230v rxyq144ptju 491
• Heat recovery 460v 492
• Reyq72 96 120pydn 492
• Heat recovery 460v remq72pydn 493
• Heat recovery 460v remq96 120pydn 494
• Heat recovery 230v reyq72 96 120ptju 495
• Heat recovery 230v reyq144ptju 496
• Heat recovery 230v remq72ptju 497
• Heat recovery 230v remq96 120ptju 498
• Electronic expansion valve filter filter 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 499
• Heat exchanger gas piping connection port 499
• Indoor unit 499
• Liquid piping connection port 499
• R1t thermistor for return air temperature r2t thermistor for liquid line temperature r3t thermistor for gas line temperature 499
• Refrigerant pipe connection port diameters 500
• Bs unit 501
• Appendix 487 502
• Blk wht 502
• Heat pump 460v rxyq72 96 120pydn 502
• Indoor f1 f2 outdoor f1 f2 outdoor q1 q2 502
• Outdoor unit 502
• Red wht blk 502
• Sius34 801a_b wiring diagrams for reference 502
• T t t t t 502
• Terminal of m1c m2c 502
• Wiring diagrams for reference 502
• Z3c n 5 502
• Z7c n 5 502
• Appendix 503
• Heat pump 230 vrxyq72 96 120ptju 503
• Wiring diagrams for reference sius34 801a_b 503
• Appendix 489 504
• D060077c 504
• Heat pump 230v rxyq144ptju 504
• Sius34 801a_b wiring diagrams for reference 504
• Appendix 505
• D057839g 505
• Heat recovery 460v reyq72 96 120pydn 505
• Layout of m1c m2c m1f m2f 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 505
• Wiring diagrams for reference sius34 801a_b 505
• Appendix 491 506
• D058613d 506
• El compo box 1 506
• El compo box 2 506
• Electrical components box 506
• Ground screw 506
• Heat recovery 460v remq72pydn 506
• Layout of m1c m1f 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 506
• Sius34 801a_b wiring diagrams for reference 506
• 460v 60hz 507
• Appendix 507
• Casing 507
• El compo box 1 507
• Electrical components box 507
• Electrical components box 2 507
• Heat recovery 460v remq96 120pydn 507
• L1 l2 l3 507
• Layout of m1c m2c m1f 507
• Note 5 507
• Output 230v 507
• Power supply 507
• Red wht blk 507
• T2a n 1 507
• 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 507
• Wiring diagrams for reference sius34 801a_b 507
• Z8c n 5 507
• Appendix 493 508
• Heat recovery 230v reyq72 96 120ptju 508
• Sius34 801a_b wiring diagrams for reference 508
• Appendix 509
• D060077c 509
• Heat recovery 230v reyq144ptju 509
• Wiring diagrams for reference sius34 801a_b 509
• Appendix 495 510
• D058614b 510
• Heat recovery 230v remq72ptju 510
• Sius34 801a_b wiring diagrams for reference 510
• Appendix 511
• Heat recovery 230v remq96 120ptju 511
• Wiring diagrams for reference sius34 801a_b 511
• Appendix 497 512
• Field wiring 512
• Heat pump 460v 512
• Rxyq72 96 120pydn 512
• Sius34 801a_b wiring diagrams for reference 512
• Appendix 513
• Heat pump 460v rxyq144 168 192 216 240pydn 513
• Wiring diagrams for reference sius34 801a_b 513
• Appendix 499 514
• Heat pump 230v rxyq72 96 120 144ptju 514
• Sius34 801a_b wiring diagrams for reference 514
• Appendix 515
• Heat pump 230v rxyq168 192 216 240ptju 515
• Wiring diagrams for reference sius34 801a_b 515
• Appendix 501 516
• Heat recovery 460v 516
• Reyq72 96 120pydn 516
• Sius34 801a_b wiring diagrams for reference 516
• Appendix 517
• Heat recovery 460v reyq144 168 192 216 240pydn 517
• Switch 517
• Wiring diagrams for reference sius34 801a_b 517
• Appendix 503 518
• Heat recovery 230v reyq72 96 120 144ptju 518
• Sius34 801a_b wiring diagrams for reference 518
• Appendix 519
• Heat recovery 230v reyq168 192 216 240ptju 519
• Wiring diagrams for reference sius34 801a_b 519
• Appendix 505 520
• D059263 520
• Fxfq12m 18m 24m 30m 36mvju 520
• Fxzq07m 09m 12m 18m7vju 520
• Indoor unit 520
• Sius34 801a_b wiring diagrams for reference 520
• Fxdq07m 09m 12m 18m 24mvju 521
• Fxsq12m 18m 24m 30m 36m 48mvju 521
• Fxaq07m 09m 12m 18m 24mvju 522
• Fxmq30m 36m 48mvju 522
• Fxhq12m 24m 36m 523
• Fxlq12m 18m 24mvju fxnq12m 18m 24mvju 523
• Appendix 509 524
• Bs unit 524
• Bsvq36p 60pvju 524
• Sius34 801a_b wiring diagrams for reference 524
• List of electrical and functional parts 525
• Outdoor unit 525
• Rxyq72p 96p 120pydn 525
• Reyq72pydn 120pydn 526
• Remq72pydn 527
• Remq96pydn 120pydn 528
• Appendix 529
• Indoor side 529
• Indoor units 529
• List of electrical and functional parts sius34 801a_b 529
• Appendix 515 530
• Sius34 801a_b list of electrical and functional parts 530
• Appendix 531
• List of electrical and functional parts sius34 801a_b 531
• Appendix 517 532
• Sius34 801a_b list of electrical and functional parts 532
• Appendix 533
• Building management system 533
• Is a registered trade mark of echelon corporation 533
• Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 533
• Lonwork 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 6 533
• Option list 533
• Option list of controllers 533
• Option list sius34 801a_b 533
• Optional accessories of operation control system 533
• Appendix 519 534
• Option lists outdoor unit 534
• Reyq72 240pydn 534
• Rxyq72 240pydn 534
• Sius34 801a_b option list 534
• 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 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 535
• Appendix 535
• Oil remains in piping 535
• Piping between outside units 535
• Piping installation point 535
• Piping installation point sius34 801a_b 535
• 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 536
• Appendix 521 536
• Change as shown in the figure below 536
• Connect straightly 536
• Gas pipe between outside units 536
• If 80 in or more 536
• If less than 80 in 536
• Oil remains in the stopping outside unit change to pattern 1 or pattern 2 536
• Prohibited pattern 536
• Sius34 801a_b piping installation point 536
• To indoor unit 536
• Appendix 523 538
• For sub cool heat exchanger liquid 538
• Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 538
• Outdoor unit fin thermistor r1t 538
• Outdoor unit for outdoor air r1t for heat exchanger gas r2t r11t for heat exchanger deicer r4t r12t 538
• R5t r13t 538
• R6t for heat exchanger liquid r7t r15t for suction r8t r10t for liquid r9t r14t 538
• Sius34 801a_b thermistor resistance temperature characteristics 538
• Thermistor resistance temperature characteristics 538
• Appendix 539
• Outdoor unit thermistors for discharge pipe r3t r31t r32t 539
• Thermistor resistance temperature characteristics sius34 801a_b 539
• Appendix 525 540
• Pressure sensor 540
• Sius34 801a_b pressure sensor 540
• 1 to make measurement disconnect all connectors and terminals 541
• Appendix 541
• Electronic circuit 541
• Inverter pc board 541
• Method of checking the inverter s power transistors and diode modules 541
• Pressure sensor sius34 801a_b 541
• 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 542
• Diode module checking 542
• When using the analog type of multiple tester make measurement in resistance measurement mode in the x1k ω range 542
• When using the digital type of multiple tester make measurement in diode check mode 542
• Appendix 529 544
• Example of connection 544
• Example of connection connection of 8 indoor units 544
• Heat pump 544
• Sius34 801a 544
• Outside unit multi connection piping kit and refrigerant branch kit selection 545
• Pipe size selection 545
• 0 75 1 0 81 51 0 40 3 1 546
• 10 96 10 lb 546
• A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 3280 ft 546
• A b r c k t 546
• Appendix 531 546
• Heat pump 546
• How to calculate the additional refrigerant to be charged 546
• Indoor units 1 8 546
• Outside unit refnet joint a g 546
• Round off in units of 0 lb 546
• Sius34 801a 546
• 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 547
• Actual and equivalent pipe length 547
• Actual pipe length 547
• Actual pipe length equivalent length 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 547
• Allowable length after the branch 547
• Between outside unit 2 and indoor unit 547
• Bold 3 pipes 547
• Branch with refnet joint branch with refnet joint and header branch with refnet header 547
• Bs unit 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 547
• Example 6 b 130 ft 8 m n p 130 ft example 8 o 547
• Example 8 a o 547
• Example of connection connection of 8 indoor units 547
• First outside unit multi connection piping kit 547
• Ft equivalent pipe length between outside unit 2 and indoor unit 620 ft note 1 547
• Heat recovery 547
• Indoor unit cool heat selection possible 547
• Indoor unit cooling only 547
• Indoor unit side 2 pipes 547
• Multi outside system reyq 547
• Outside unit 547
• Outside unit outside unit 547
• Outside unit side 3 pipes 547
• Pipe length between outside unit 2 and indoor unit 540 ft example 8 a b c d e 540 ft 547
• Piping from bs unit to indoor unit or piping from refrigerant branch kit to indoor unit used as cooling only 547
• Piping from outside unit to bs unit 547
• Pydn reyq 547
• Pydn reyq 7 547
• Single outside system reyq 7 547
• Suction gas pipe hp lp gas pipe liquid pipe 547
• Suction gas pipe liquid pipe 547
• Thin 2 pipes 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 547
• Appendix 533 548
• Outside unit multi connection piping kit and refrigerant branch kit selection 548
• Pipe size selection 548
• Sius34 801a 548
• 0 75 1 0 21 1 0 81 75 0 40 10 0 15 1 2 3 1 549
• 12 82 12 lb 549
• A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 3280 ft 549
• A b u r c n s t o p 549
• How to calculate the additional refrigerant to be charged 549
• Indoor units 1 8 549
• Outside unit refnet joint a g 549
• Round off in units of 0 lb 549
• Part 7 550
• Part 7 precautions for new refrigerant r 410a 550
• Precautions for new refrigerant r 410a 550
• Precautions for new refrigerant r 410a 36 550
• Service tools 538 550
• 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 551
• About refrigerant r 410a 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 551
• Mpa 145 psi 551
• Outline 551
• Precautions for new refrigerant r 410a 551
• Precautions for new refrigerant r 410a 537 552
• Sius34 801a_b precautions for new refrigerant r 410a 552
• Thermodynamic characteristic of r 410a 552
• Copper tube material and thickness 553
• For the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 553
• O soft annealed h hard drawn 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 553
• Service tools 553
• Tool compatibility 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 554
• Differences 2 change of dimension a 554
• Flaring tool 554
• L for clutch types only a conventional tool with pipe extension margin adjustment can be used 554
• Specifications 2 dimension a 554
• Unit mm 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 558
• Drawings flow charts 564
• R 410a heat pump heat recovery rx e yq72 240pydn ptju 567
• Rxyq72 240pydn ptju r 410a heat pump 60hz reyq72 240pydn ptju r 410a heat recovery 60hz 567
• Service manual 567
• Sius34 801a 567