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Daikin RXQ26MAY1 [98/344] Special control
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Si39-501 Special Control
Function 87
3. Special Control
3.1 Startup Control
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.
3.1.1 Startup Control in Cooling Operation
Thermostat ON
Pressure equalization
control prior to startup
Startup control
STEP1 STEP2
Compressor OFF
52Hz
+OFF +OFF
+2 steps/20 sec.
(until Pc - Pe>0.39MPa is achieved)
Outdoor unit fan OFF OFF
+1 step/15 sec. (when Pc>2.16MPa)
-1 step/15 sec. (when Pc<1.77MPa)
Main motorized valve (EV1) 0 pls 2000 pls 2000 pls
Subcooling motorized valve
(EV2)
0 pls 0 pls 0 pls
Hot gas bypass valve
(SVP)
ON (RXQ5MA models)
OFF (RXQ8~16MA models)
ON ON
Receiver gas discharging
valve (SVG)
OFF OFF OFF
Non-operating unit liquid
pipe stop valve (SVL)
ON ON ON
Ending conditions
RXQ5MA models
• Pc - Pe<0.20MPa
• A lapse of three
minutes
RXQ8~16MA models
• A lapse of 15 sec.
A lapse of 5 sec.
• A lapse of 320 sec.
• Pc - Pe>0.39MPa
•
OR
•
OR
Содержание
- Basic control 6 2
- Combination of outdoor units 4 model selection 2
- Function general 4 2
- Functional parts layout 1 2
- Introduction vi 2
- Model names of indoor outdoor units 2 external appearance 2
- Part 1 general information 2
- Part 2 specifications 2
- Part 3 refrigerant circuit 1 2
- Part 4 function 3 2
- R 410a cooling only 50hz 2
- Refrigerant circuit 2 2
- Refrigerant flow for each operation mode 4 2
- Specifications 0 2
- Tavle of contents 2
- Other control 9 3
- Outdoor unit pc board layout 19 3 field setting 20 3
- Outline of control indoor unit 03 3
- Part 5 test operation 13 3
- Part 6 troubleshooting 53 3
- Protection control 4 3
- Special control 7 3
- Symptom based troubleshooting 56 2 troubleshooting by remote controller 59 3
- Test operation 14 3
- Troubleshooting by indication on the remote controller 72 4
- List of electrical and functional parts 92 5
- Part 7 appendix 57 5
- Piping diagrams 58 5
- Troubleshooting op central remote controller 35 5
- Troubleshooting op schedule timer 41 5
- Troubleshooting op unified on off controller 48 5
- Wiring diagrams for reference 68 5
- Drawings flow charts v 6
- Index i 6
- Option list 00 6
- Part 8 precautions for new refrigerant r 410a 17 6
- Piping installation point 03 6
- Precautions for new refrigerant r 410a 18 6
- Selection of pipe size joints and header 07 6
- Thermistor resistance temperature characteristics 12 8 pressure sensor 14 9 method of replacing the inverter s power transistors and diode modules 15 6
- Caution in repair 7
- Introduction 7
- Safety cautions 7
- Warning 7
- Caution 8
- Cautions regarding products after repair 8
- Warning 8
- Caution 9
- Inspection after repair 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Using icons 10
- Using icons list 10
- Preface 11
- Part 1 general information 12
- General information 13
- Indoor units 13
- Indoor units connection unit series 13
- Model names of indoor outdoor units 13
- Model names of indoor outdoor units si39 501 13
- Note bev unit is required for each indoor unit 13
- Note fxdq has following 2 series as show below general asia except for eu china and australia fxdq nvet without drain pump fxdq nve with drain pump 13
- Note refer to the engineering data of ed39 428b concerning about the informations of indoor units 13
- Outdoor units 13
- Ceiling mounted built in type 14
- Ceiling mounted cassette corner type 14
- Ceiling mounted cassette type double flow 14
- Ceiling mounted cassette type multi flow 14
- Ceiling mounted duct type 14
- Ceiling suspended cassette type connection unit series 14
- Ceiling suspended type 14
- Concealed floor standing type 14
- External appearance 14
- Floor standing type 14
- Floor standing type connection unit series 14
- General information 3 14
- Indoor units 14
- Si39 501 external appearance 14
- Slim ceiling mounted duct type 14
- Wall mounted type 14
- Wall mounted type connection unit series 14
- Outdoor units 15
- Combination of outdoor units 16
- Connectable indoor units number and capacity 17
- General information 17
- Model selection 17
- Model selection si39 501 17
- Vrv ii cooling only series 17
- Connectable indoor unit 18
- Connectable indoor unit connection unit series 18
- Fxdq nvet without drain pump fxdq nve with drain pump 18
- General information 7 18
- Hp 2 hp 2 hp 3 hp 4hp 5hp 8hp 10hp 18
- In some models it is not possible to connect the maximum number of connectable indoor units select models so the total capacity of connected indoor units conforms to the specification 18
- Indoor unit capacity 18
- New refrigerant model code p20 type p25 type p32 type p40 type p50 type p63 type p80 type p100 type p125 type p200 type p250 type 18
- Note bev unit is required for each indoor unit 18
- Note fxdq has following 2 series as show below general asia except for eu china and australia 18
- Selecting model capacity 2 kw 2 kw 3 kw 4 kw 5 kw 7 kw 9 kw 11 kw 14 kw 22 kw 28 kw equivalent output 0 hp 1hp 18
- Si39 501 model selection 18
- The total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit 18
- 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 kw 18
- Differences from conventional models 19
- Part 2 specifications 20
- Specifications 0 20
- Outdoor unit s 21
- Specifications 21
- Specifications si39 501 21
- Si39 501 specifications 22
- Specifications 11 22
- Specifications 23
- Specifications si39 501 23
- Si39 501 specifications 24
- Specifications 13 24
- Specifications 25
- Specifications si39 501 25
- Si39 501 specifications 26
- Specifications 15 26
- Specifications 27
- Specifications si39 501 27
- Si39 501 specifications 28
- Specifications 17 28
- Specifications 29
- Specifications si39 501 29
- Si39 501 specifications 30
- Specifications 19 30
- Specifications 31
- Specifications si39 501 31
- Ceiling mounted cassette type double flow 32
- Indoor units 32
- Si39 501 specifications 32
- Specifications 21 32
- Ceiling mounted cassette type double flow 33
- Specifications 33
- Specifications si39 501 33
- Ceiling mounted cassette type multi flow 34
- Si39 501 specifications 34
- Specifications 23 34
- Ceiling mounted cassette type multi flow 35
- Specifications 35
- Specifications si39 501 35
- Ceiling mounted cassette corner type 36
- Si39 501 specifications 36
- Specifications 25 36
- Slim ceiling mounted duct type with drain pump 37
- Specifications 37
- Specifications si39 501 37
- Si39 501 specifications 38
- Slim ceiling mounted duct type with drain pump 38
- Specifications 27 38
- Slim ceiling mounted duct type without drain pump 39
- Specifications 39
- Specifications si39 501 39
- Si39 501 specifications 40
- Slim ceiling mounted duct type without drain pump 40
- Specifications 29 40
- Ceiling mounted built in type 41
- Specifications 41
- Specifications si39 501 41
- Ceiling mounted built in type 42
- Si39 501 specifications 42
- Specifications 31 42
- Ceiling mounted built in type 43
- Specifications 43
- Specifications si39 501 43
- Ceiling mounted duct type 44
- Si39 501 specifications 44
- Specifications 33 44
- Ceiling mounted duct type 45
- Specifications 45
- Specifications si39 501 45
- Ceiling suspended type 46
- Si39 501 specifications 46
- Specifications 35 46
- Specifications 47
- Specifications si39 501 47
- Wall mounted type 47
- Si39 501 specifications 48
- Specifications 37 48
- Wall mounted type 48
- Floor standing type 49
- Specifications 49
- Specifications si39 501 49
- Floor standing type 50
- Si39 501 specifications 50
- Specifications 39 50
- Concealed floor standing type 51
- Specifications 51
- Specifications si39 501 51
- Concealed floor standing type 52
- Si39 501 specifications 52
- Specifications 41 52
- Ceiling suspended cassette type 53
- Specifications 53
- Specifications si39 501 53
- Bev units 54
- Si39 501 specifications 54
- Specifications 43 54
- Specifications 55
- Specifications si39 501 55
- Wall mounted type 55
- Si39 501 specifications 56
- Specifications 45 56
- Wall mounted type 56
- Bev units 57
- Bevq50m bevq50m 57
- Connection unit series 57
- Fxaq20mh fxaq25mh fxaq32mh fxaq40mh fxaq50mh 57
- Fxlq20mh fxlq25mh fxlq32mh fxlq40mh fxlq50mh 57
- Specifications 57
- Specifications si39 501 57
- Floor standing type 58
- Si39 501 specifications 58
- Specifications 47 58
- Floor standing type 59
- Specifications 59
- Specifications si39 501 59
- Outdoor air processing unit 60
- Si39 501 specifications 60
- Specifications 49 60
- Functional parts layout 1 62
- Part 3 refrigerant circuit 62
- Refrigerant circuit 2 62
- Refrigerant flow for each operation mode 4 62
- Refirgerant circuit 63
- Refrigerant circuit 63
- Refrigerant circuit si39 501 63
- Rxq5ma 63
- Refirgerant circuit 53 64
- Rxq5ma 64
- Si39 501 refrigerant circuit 64
- Refirgerant circuit 65
- Refrigerant circuit si39 501 65
- Rxq8ma 10ma 65
- Refirgerant circuit 55 66
- Rxq8ma 10ma 66
- Si39 501 refrigerant circuit 66
- Refirgerant circuit 67
- Refrigerant circuit si39 501 67
- Rxq12ma 67
- Refirgerant circuit 57 68
- Rxq12ma 68
- Si39 501 refrigerant circuit 68
- Refirgerant circuit 69
- Refrigerant circuit si39 501 69
- Rxq14ma 16ma 69
- Refirgerant circuit 59 70
- Rxq14ma 16ma 70
- Si39 501 refrigerant circuit 70
- Main control equipment 71
- Outdoor air processing unit fxmq125mfv1 250mfv1 71
- Refrigerant system 71
- Sh control superheated control of heat exchanger outlet 71
- Thermistor 71
- Front view 72
- Functional parts layout 72
- Refirgerant circuit 61 72
- Rxq5ma 72
- Si39 501 functional parts layout 72
- Front view 73
- Functional parts layout si39 501 73
- Refirgerant circuit 73
- Rxq8ma 10ma 12ma 73
- Front view 74
- Refirgerant circuit 63 74
- Rxq14ma 16ma 74
- Si39 501 functional parts layout 74
- Refirgerant circuit 75
- Refrigerant flow for each operation mode 75
- Refrigerant flow for each operation mode si39 501 75
- Rxq5ma cooling operation 75
- Cooling oil return operation 76
- Refirgerant circuit 65 76
- Si39 501 refrigerant flow for each operation mode 76
- Refirgerant circuit 77
- Refrigerant flow for each operation mode si39 501 77
- Rxq8ma 10ma cooling operation 77
- Cooling oil return 78
- Refirgerant circuit 67 78
- Si39 501 refrigerant flow for each operation mode 78
- Refirgerant circuit 79
- Refrigerant flow for each operation mode si39 501 79
- Rxq12ma cooling operation 79
- Cooling oil return 80
- Refirgerant circuit 69 80
- Si39 501 refrigerant flow for each operation mode 80
- Refirgerant circuit 81
- Refrigerant flow for each operation mode si39 501 81
- Rxq14ma 16ma cooling operation 81
- Cooling oil return operation 82
- Refirgerant circuit 71 82
- Si39 501 refrigerant flow for each operation mode 82
- Basic control 6 84
- Function general 4 84
- Other control 9 84
- Outline of control indoor unit 03 84
- Part 4 function 84
- Part 4 part 4 part 4 part 4 function function function function 84
- Protection control 4 84
- Special control 7 84
- Function general 85
- Symbol 85
- Operation mode 86
- Basic control 87
- List of functions in normal operation 87
- Normal operation 87
- Compressor pi control 88
- Compressor pi control 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 88
- Cooling operation 88
- Basic control si39 501 89
- Function 89
- Operating priority and rotation of compressors 89
- Function 79 90
- In the case of combination of 3 outdoor units the above diagram shows master unit slave unit 1 and slave unit 2 from left to right compressors may operate in any pattern other than those mentioned above according to the operating status 90
- Si39 501 basic control 90
- Basic control si39 501 91
- Compressor step control compressor operations vary with the following steps according to information in 2 compressor pi control furthermore the operating priority of compressors is subject to information in 91
- Function 91
- 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 91
- Operating priority and rotation of compressors 91
- Rxq14ma 16ma 91
- Rxq5ma 91
- Rxq8ma 10ma 12ma 91
- Function 81 92
- 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 92
- Rxq18ma 20ma 22ma 24ma 92
- Rxq26ma 28ma 92
- Si39 501 basic control 92
- Basic control si39 501 93
- Function 93
- 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 93
- Rxq30ma 32ma 93
- Rxq34ma 36ma 93
- Function 83 94
- 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 94
- Rxq38ma 40ma 94
- Rxq42ma 44ma 94
- Si39 501 basic control 94
- Basic control si39 501 95
- Function 95
- 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 95
- Rxq46ma 48ma 95
- Electronic expansion valve pi control 96
- 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 96
- Step control of outdoor unit fans 96
- Subcooling motorized valve ev2 control makes pi control of the motorized valve y2e to keep the superheated degree of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger 96
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 96
- Outdoor unit fan control in cooling operation 97
- 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 circulation rate to be supplied to indoor units 97
- Special control 98
- Startup control 98
- Startup control in cooling operation 98
- 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 98
- In order to prevent the compressor from running out of oil the oil return operation is conducted to recover oil flown out from the compressor to the system side 99
- In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the oil return operation non operating unit stops during oil return preparation operation actuators are based on rxq16ma 99
- Oil return operation 99
- Oil return operation in cooling operation 99
- Start conditions referring to the set conditions for the following items start the oil return operation in cooling cumulative oil feed rate timer setting make this setting so as to start the oil return operation when the initial cumulative operating time reaches two hours after power supply is turned on and then every eight hours furthermore the cumulative oil feed rate is computed from tc te and compressor loads 99
- Actuators are based on rxq16ma 100
- If the liquid refrigerant stays in the heat exchanger 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 heat exchanger while the compressor stops the pump down residual operation is conducted 100
- Pump down residual operation 100
- Pump down residual operation in cooling operation 100
- Actuators are based on rxq16ma 101
- Crankcase heater control 101
- In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater 101
- Restart standby 101
- Standby 101
- Used to forcedly stop the compressor for a period of five minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 101
- Actuators are based on rxq16ma 102
- 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 102
- Stop due to malfunction 102
- Stopping operation 102
- This mode is used to define actuator operations when the system stops 102
- When system is in stop mode 102
- Mode a operating unit collects refrigerant 103
- Mode a or b operation 103
- Mode b stopping unit storage refrigerant 103
- Stopping operation of slave units during master unit is in operation with multi outdoor unit system 103
- The changeover operation for mode a and b is performed for the reason that the required refrigerant amount varies depending on the indoor unit operation capacity 103
- While the master unit is in operation this mode is used to set the refrigerant flow rate to a required level using a slave unit in the stopped mode in cooling operation the system operates in mode a or mode b listed in the table below 103
- Pressure equalization prior to startup 104
- High pressure protection control 105
- In cooling operation 105
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 105
- Protection control 105
- 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 105
- In cooling operation 106
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 106
- Low pressure protection control 106
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 106
- Discharge pipe protection control 107
- Each compressor performs the discharge pipe temperature protection control individually in the following sequence 107
- Inv compressor 107
- Std compressor 107
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 107
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 108
- Inv upper limit frequency 1 step 1 min up from current compressor frequency interval 108
- 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 108
- Inverter fin temperature control 108
- Inverter overcurrent protection control 108
- Inverter protection control 108
- For transitional rise in discharge pipe temperature have the liquid refrigerant flow into the suction side to reduce the discharge pipe temperature for the compressor protection 109
- Injection control only for rxq5ma 109
- Std compressor overload protection 109
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 109
- After oil return operation at the beginning of the starting control 110
- Details of outdoor unit rotation in the case of multi outdoor unit system each outdoor unit is given an operating priority for the control outdoor unit rotation makes it possible to change the operating priority of outdoor units thus the system becomes free of compressors that stop over an extended period of time at the time of partial loading preventing unbalanced oil level 110
- Example the following diagram shows outdoor unit rotation in combination of 3 outdoor units 110
- In the case of multi outdoor unit system this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units 110
- Master slave 1 slave 2 master slave 1 slave 2 110
- Master unit slave unit 1 and slave unit 2 in this section are the names for installation they are determined in installation work and not changed thereafter these names are different from master unit and slave unit for control the outdoor unit connected the control wires f1 and f2 for the indoor unit should be designated as master unit consequently the led display on the main pcb for master unit slave unit 1 and slave unit 2 do not change refer to the page 115 110
- Normal operation 110
- Oil return operation 110
- Other control 110
- Outdoor unit rotation 110
- Starting control 110
- Timing of outdoor unit rotation 110
- Blink h1 111
- Emergency operation 111
- Factory set 111
- If the compressor cannot operate this control inhibits any applicable compressor or outdoor unit from operating to perform emergency operation only with the operative compressor or outdoor unit 111
- In order to set std1 and std2 compressors to operation prohibition mode set no 19 of setting mode 2 to std1 2 operation prohibition rxq8m 16m 111
- In order to set the std 2 compressor to operation prohibition mode set no 19 of setting mode 2 to std2 operation prohibition rxq14ma 16ma 111
- In the case of system with 1 outdoor unit installed only when thermostats of indoor units having a capacity of 50 or more of the outdoor unit capacity turn on the emergency operation is functional if the total capacity of indoor units with thermostat on is small the outdoor unit cannot operate if the emergency operation is set while the outdoor unit is in operation the outdoor unit stops once after pump down residual operation a maximum of 5 minutes elapsed 111
- Led display 111
- Set the system to operation prohibition mode by compressor in order to set an inv compressor to operation prohibition mode set no 42 of setting mode 2 to emergency operation 111
- In the case of multi outdoor unit system rxq18ma to 48ma 112
- Blink h1 113
- Demand operation 113
- Led display 113
- Drain pump control 114
- Outline of control indoor unit 114
- Note if the float switch is tripped five times in succession a drain malfunction is determined to have occurred af is then displayed as operation continues 115
- When the float switch is tripped and af is displayed on the remote controller 115
- Louver control for preventing ceiling dirt 116
- Thermostat sensor in remote controller 117
- Assuming that the suction air temperature at the time of starting the dry operation is tro and the suction air temperature in operation is tr 118
- Function 107 118
- Furthermore 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 118
- Si39 501 outline of control indoor unit 118
- Thermostat control in dry operation 118
- Thermostat control while in normal operation 118
- 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 c from the set temperature while in cooling operation 118
- While in a single remote controller group control the body thermostat is only used fro this control through field settings the thermostat differential setting can be changed from 1 c to 0 c for details on the changing procedure refer to information on page onward 118
- While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 118
- Freeze prevention 119
- Control of outdoor air processing unit unique control for outdoor air processing unit 120
- Selection of operation mode by suction air thermostat 120
- Discharge air 121
- Discharge air temperature control 121
- Ev ev ev ev ev ev 121
- Is ev possible to close 121
- Is ev possible to open 121
- Refrigerant 121
- Sh t3 t2 121
- Temp setting 121
- 1 l or ll only on fxfq models 122
- 2 thermostat off by discharge air temperature 122
- C or lower after the said timer completes the operative period reset the 60 minute timer when the fan stops running 122
- C or lower in order to monitor the outdoor air temperature however turn on the fan for a period of one minute and turn off the fan again at a temperature of 5 122
- Degree continue for 5 minutes 122
- Details cooling and fan operation turn off the fan for a period of 60 minutes at a suction temperature of 5 122
- List of swing flap operations 122
- Low outdoor air temperature protection control 122
- Objective in cooling or fan operation or heating if outdoor air is low in temperature stop the fan forcibly 122
- Swing flaps operate as shown in table below 122
- Thermostat on 122
- Thermostat stops for 1 minute 122
- Outdoor unit pc board layout 19 3 field setting 20 124
- Part 5 test operation 124
- Test operation 14 124
- Check work prior to turn power supply on 125
- Follow the following procedure to conduct the initial test operation after installation 125
- Procedure and outline 125
- Test operation 125
- Additional charging of refrigerant 126
- Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 126
- Bring the stop valves to the following conditions respectively 126
- Check the led display of the outdoor unit pc board 126
- Check the power supply 126
- Check the stop valves 126
- Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 126
- Disconnect the refrigerant charge hose and then open the liquid side stop valve 126
- Even if no stop operation is conducted the equipment will automatically stop after a lapse of 30 minutes at maximum 126
- If a full amount of refrigerant cannot be charged with the outdoor unit off charge the refrigerant by the deficient amount according to the following procedure 126
- Is the power supplied to the outdoor unit and the indoor unit 126
- Liquid side stop valve closed gas side stop valve open 126
- Make field settings if needed for the setting procedure refer to information in 3 field setting from outdoor unit on page 133 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 126
- Make field settings with outdoor unit pc board 126
- Operation after stop 126
- Press the check button bs3 after charging the specified amount of refrigerant 126
- Set the system to refrigerant additional charging operation while in setting mode 2 126
- Si39 501 test operation 126
- Stopping equipment 126
- Test operation 115 126
- The main unit is the outdoor unit to which the transmission wiring for the indoor units is conncted the other outdoor units are slave units 126
- The system will automatically start operation the h2p blinks during operation and test operaion and under centralized control are displayed on the remote controller 126
- Turn outdoor unit and indoor unit power on 126
- Turn power on 126
- Check operation 127
- During check operation mount front panel to avoid the misjudging check operation is mandatory for normal unit operation when the check operation is not executed alarm code u3 will be displayed 127
- For the outdoor multi system an outdoor unit to which the indoor unit connecting wires are connected serves as the master unit be sure to make settings with pushbutton switches on the master unit 127
- If the check operation is started within approximately 12 minutes after turning on the power supply to the indoor and outdoor units h2p will turn on and the compressor will not operate referring to information in table in 1 turn power on on the previous page check to be sure the led displays are normal and then operate the compressor 127
- In order to ensure even refrigerant conditions there may be cases where a maximum of approximately 10 minutes are required for the compressor to start up which however is not a malfunction 127
- No malfunctions can be checked on individual indoor unit after the completion of this test operation check the individual indoor unit for any malfunctions while in normal operation mode using the remote controller 127
- While in check operation mode the indoor units as well as the outdoor units start the operation do not attempt to conduct the check operation while working on the indoor unit 127
- While in the test operation operating sounds such as refrigerant passing sounds or solenoid valve switching sounds may become louder 127
- Work with all the outside panels closed except for the switch box 127
- After stopping the compressor operation using the remote controller the outdoor unit may conduct the residual operation for a period of 5 minutes at maximum 128
- Conduct normal unit operation after the check operation has been completed when outdoor air temperature is 24 c or higher the unit can not be operated with heating mode see the instruction manual attached confirm that the indoor outdoor units can be operated normally when an abnormal noise due to liquid compression by the compressor can be heard stop the unit immediately and turn on the crankcase heater to heat up it sufficiently then start operation again 128
- Confirm that the indoor unit discharges cold air or warm air 128
- Confirmation on normal operation 128
- For a period of approximately 5 minutes after the compressor stops even if the on off button for the indoor units in the same refrigerant system is pressed the compressor will not operate 128
- If the system is set to nighttime automatic low noise operation setting or external low noise level setting the outdoor unit fan may operate at a low speed which however is not a malfunction 128
- Malfunction code in case of an alarm code displayed on remote controller 128
- Operate indoor unit one by one to check that the corresponding outdoor unit operates 128
- Operate the air direction control button and flow rate control button to check the function of the devices 128
- When the check operation is not conducted using the test operation button at the first test operation after installation the malfunction code u3 will be displayed be sure to conduct the check operation according to 1 check operation for details refer to information on the previous page 128
- 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 129
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter pc board a2p and control transformer t1r t2r in switch box together 129
- Operation when power is turned on 129
- 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 129
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 129
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 129
- When turning on power first time 129
- When turning on power the second time and subsequent 129
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 130
- 2 set mode display led leds display mode according to the setting 130
- 3 mode setting switch used to change mode 130
- 4 local setting switch used to make local settings 130
- Outdoor unit pc board 130
- Outdoor unit pc board layout 130
- Field setting 131
- Field setting from remote controller 131
- Wireless remote controller indoor unit 132
- 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 however 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 heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit 134
- Setting contents and code no vrv indoor unit 134
- Si39 501 field setting 134
- Test operation 123 134
- Applicable range of field setting 135
- Field setting si39 501 135
- Static pressure selection 135
- Test operation 135
- Auto restart after power failure reset 136
- Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 136
- Detailed explanation of setting modes 136
- Fan speed changeover when thermostat is off by setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off 136
- Filter sign setting 136
- For the above reasons when the unit is set enabling to utilize auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 136
- For the air conditioners with no setting for the 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 the main power supply is turned on again after once turned off however for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure 136
- If switching the filter sign on time set as given in the table below set time 136
- In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 136
- Setting table 136
- Since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 136
- Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 136
- Air flow adjustment ceiling height make the following setting according to the ceiling height the setting position no is set to 01 at the factory 137
- Air flow direction setting set the air flow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 137
- In the case of fxaq fxhq 137
- In the case of fxfq100 125 137
- In the case of fxfq25 80 137
- In the case of fxuq71 125 137
- Setting of air flow direction adjustment only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 137
- Setting table 137
- Air flow rate switching at discharge grille for field air flow rate switching when the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate follow the instruction manual for the optional parts to enter the setting numbers 138
- Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 138
- Setting of the static pressure selection for fxdq model 138
- Setting table 138
- Note bold face in indicates the default setting 139
- Outdoor air processing unit field setting remote controller 139
- Centralized control group no setting 140
- Brc7c type 141
- 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 operative fault 141
- Field setting si39 501 141
- Group no setting by wireless remote controller for centralized control 1 when in the normal mode push button for 4 seconds or more and operation then enters the field set mode 2 set mode no 00 with button 3 set the group no for each group with button advance backward 4 enter the selected group numbers by pushing button 5 push button and return to the normal mode 141
- Group no setting example 141
- Test operation 141
- Contents of control modes 142
- Setting of operation control mode from remote controller local setting 142
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 143
- Factory setting 143
- How to select operation mode whether operation by remote controller will be possible or not for turning on off controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below 143
- Field setting from outdoor unit 144
- 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 144 onward 144
- For setting items of 1 refer to detailed information provided on page 150 onward 145
- Caution 146
- Dip switch detail 146
- Dip switch setting after changing the main p c board a1p to spare parts p c b after the replacement by the spare pc board be sure to make settings shown below when you change the main p c board a1p to spare parts p c b please carry out the following setting 146
- If the ds1 1 1 4 ds2 2 ds2 4 setting has not been carried out error code ua is displayed and unit can not be operated 146
- Initial conditions of dip switches 146
- Make the following settings according to models of outdoor units all models are set to off at factory 146
- Setting by dip switches using dip switches on the pc board enables field setting shown below however make no changes of factory settings except for ds1 1 146
- 7 8 7 7 7 7 148
- A setting mode 1 148
- Si39 501 field setting 148
- Test operation 137 148
- This mode is used to check the following items 1 check items the following items can be checked 1 current operating conditions normal abnormal in check operation 2 setting conditions of cool heat selection individual batch master batch slave 3 low noise operating conditions in normal operation in low noise operation 4 demand operating conditions in normal operation in demand operation 148
- B setting mode 2 149
- 7 7 7 7 7 153
- 7 7 7 7 8 153
- 7 7 7 7 9 153
- 7 7 7 8 7 153
- 7 7 7 8 8 153
- 7 7 7 9 7 153
- 7 7 8 7 7 153
- 7 7 8 7 8 153
- 7 7 8 8 7 153
- 7 7 8 8 8 153
- 7 7 9 7 7 153
- 7 8 7 7 7 153
- 7 8 7 7 8 153
- 7 8 7 8 7 153
- 7 8 7 8 8 153
- 7 8 8 7 7 153
- 7 8 8 7 8 153
- 7 8 8 8 7 153
- 7 8 8 8 8 153
- 8 7 7 7 7 153
- 8 7 8 7 7 153
- 8 7 8 7 8 153
- 8 7 8 8 7 153
- C monitor mode 153
- Defrost select setting short 153
- Emg operation backup operation setting 153
- Field setting si39 501 153
- Setting item 0 display contents of various setting 153
- Tc setting h 153
- Te setting h 153
- Test operation 153
- The numbers in the no column represent the number of times to press the set bs2 button 153
- Setting of low noise operation and demand operation 155
- Image of operation in the case of a 156
- Image of operation in the case of a b 156
- Image of operation in the case of b 156
- A when the demand operation is carried out by external instructions with the use of the external control adapter for outdoor unit 1 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 2 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 157
- B when the continuous 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 157
- Setting of demand operation by connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 157
- Image of operation in the case of a 158
- Image of operation in the case of a and b 158
- Image of operation in the case of b 158
- Si39 501 field setting 158
- Test operation 147 158
- Additional refrigerant charge total flow 161
- Field setting si39 501 161
- Setting of refrigerant additional charging operation 161
- Test operation 161
- When additional refrigerant is not charged all with outdoor unit in stop mode operate the outdoor unit and charge the liquid refrigerant from the service port of liquid stop value the additional charging operation is activated by pushbutton switch on the outdoor unit pc board 161
- Setting of refrigerant recovery mode 162
- Check operation 163
- Check operation function 163
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 163
- Note be sure to disconnect the compressor wiring when conducting the check operation mentioned above when the output voltage is approx 50 v 10 hz and the voltage balance between phases u v v w w u is within 5 the inverter pcb is normal 163
- Operating procedure 163
- Power transistor check operation 163
- Press mode button bs1 once and reset setting mode 2 163
- Setting of vacuuming mode 163
- To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor of discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of motorized valve 163
- Use the vacuum pump to perform vacuuming operation 163
- When the inverter system malfunctions malfunction of inverter inv compressor to locate where the malfunction occurs switching to the power transistor check mode of inverter in the service mode setting enables not to judge the position detection signal malfunction but to output waveform only during inverter operation the waveform can be checked by disconnecting the wiring of compressor 163
- With setting mode 2 while the unit stops set refrigerant recovery vacuuming mode to on the expansion valves of indoor and outdoor units fully open and some of solenoid valves open h2p blinks to indicate the test operation and the remote controller displays test operation and under centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation 163
- Part 6 part 6 part 6 part 6 troubleshooting troubleshooting troubleshooting troubleshooting 164
- Part 6 troubleshooting 164
- Symptom based troubleshooting 56 2 troubleshooting by remote controller 59 164
- Troubleshooting by indication on the remote controller 72 164
- Troubleshooting op central remote controller 35 165
- Troubleshooting op schedule timer 41 165
- Troubleshooting op unified on off controller 48 166
- Symptom based troubleshooting 167
- Inspection mode 170
- Local setting mode service mode 170
- Normal mode 170
- Test operation mode 170
- The following modes can be selected by using the inspection test operation button on the remote control 170
- The inspection test button 170
- Troubleshooting by remote controller 170
- Self diagnosis by wired remote controller 171
- Self diagnosis by wireless remote controller 172
- The lower digit of the code changes as shown below when the up and down buttons are pressed 173
- Operation of the remote controller s inspection test operation button 175
- Troubleshooting 175
- Troubleshooting by remote controller si39 501 175
- Remote controller service mode 176
- Remote controller self diagnosis function 178
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 180
- Malfunction code indication by outdoor unit pcb 181
- Monitor mode 181
- Troubleshooting 181
- Troubleshooting by remote controller si39 501 181
- Actuation of external protection device 183
- Applicable models all indoor unit models 183
- Defect of indoor unit pc board 183
- Detect open or short circuit between external input terminals in indoor unit 183
- Improper field set 183
- Indoor unit error of external protection device 183
- Malfunction decision conditions 183
- Method of malfunction detection 183
- Remote controller display 183
- Supposed causes 183
- Troubleshooting 183
- Troubleshooting by indication on the remote controller 183
- When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 183
- Indoor unit pc board defect 184
- Indoor unit malfunction of drain level control system s1l 185
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 186
- Si39 501 troubleshooting by indication on the remote controller 186
- Troubleshooting 186
- Troubleshooting 175 186
- Applicable models all indoor units 187
- Detection by failure of signal for detecting number of turns to come from the fan motor 187
- Disconnected or faulty wiring between fan motor and pc board 187
- Fan motor lock 187
- Indoor unit fan motor m1f lock overload 187
- Malfunction decision conditions 187
- Method of malfunction detection 187
- Remote controller display 187
- Supposed causes 187
- Troubleshooting 187
- When number of turns can t be detected even when output voltage to the fan is maximum 187
- Indoor unit malfunction of swing flap motor ma 188
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 189
- Troubleshooting 189
- Troubleshooting by indication on the remote controller si39 501 189
- Applicable models all indoor unit models 190
- Defect of connecting cable 190
- Defect of indoor unit pc board 190
- Indoor unit malfunction of moving part of electronic expansion valve 20e 190
- Malfunction decision conditions 190
- Malfunction of moving part of electronic expansion valve 190
- Method of malfunction detection 190
- Remote controller display 190
- Supposed causes 190
- Troubleshooting 190
- Use a microcomputer to check the electronic expansion valve for coil conditions 190
- When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer 190
- Coil check method for the moving part of the electronic expansion valve disconnect the electronic expansion valve from the pc board and check the continuity between the connector pins 191
- Continuity no continuity 191
- Normal 191
- Indoor unit drain level above limit 192
- Indoor unit malfunction of capacity determination device 193
- 2 refer to thermistor resistance temperature characteristics table on p312 194
- Applicable models all indoor unit models 194
- Defect of indoor unit pc board 194
- Defect of thermistor r2t for liquid pipe 194
- Indoor unit malfunction of thermistor r2t for heat exchanger 194
- Malfunction decision conditions 194
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 194
- Method of malfunction detection 194
- Remote controller display 194
- Supposed causes 194
- Troubleshooting 194
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 194
- 2 refer to thermistor resistance temperature characteristics table on p312 195
- Applicable models all indoor unit models 195
- Defect of indoor unit pc board 195
- Defect of indoor unit thermistor r3t for gas pipe 195
- Indoor unit malfunction of thermistor r3t for gas pipes 195
- Malfunction decision conditions 195
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 195
- Method of malfunction detection 195
- Remote controller display 195
- Supposed causes 195
- Troubleshooting 195
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 195
- 2 refer to thermistor resistance temperature characteristics table on p312 196
- Applicable models aii indoor unit models 196
- Defect of indoor unit pc board 196
- Defect of indoor unit thermistor r1t for air inlet 196
- Indoor unit malfunction of thermistor r1t for suction air 196
- Malfunction decision conditions 196
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 196
- Method of malfunction detection 196
- Remote controller display 196
- Supposed causes 196
- Troubleshooting 196
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 196
- Indoor unit malfunction of thermostat sensor in remote controller 197
- Outdoor unit pc board defect 198
- Outdoor unit actuation of high pressure switch 199
- 1 voltage measurement point 200
- 2 refer to pressure sensor pressure voltage characteristics table on p314 200
- Abnormal drop of low pressure lower than 0 7mpa 200
- Abnormality is detected by the pressure value with the low pressure sensor 200
- Applicable models rxq5ma 48ma 200
- Defect of low pressure sensor 200
- Defect of outdoor unit pc board 200
- Error is generated when the low pressure is dropped under specific pressure 200
- Malfunction decision conditions 200
- Method of malfunction detection 200
- Outdoor unit actuation of low pressure sensor 200
- Remote controller display 200
- Stop valve is not opened 200
- Supposed causes 200
- Troubleshooting 200
- Applicable models rxq5ma 48ma 201
- Compressor lock 201
- Faulty inverter pc board 201
- High differential pressure 0 mpa or more 201
- Incorrect uvwn wiring 201
- Inverter pc board takes the position signal from uvwn line connected between the inverter and compressor and detects the position signal pattern 201
- Malfunction decision conditions 201
- Method of malfunction detection 201
- Outdoor unit compressor motor lock 201
- Remote controller display 201
- Stop valve is left in closed 201
- Supposed causes 201
- The position signal with 3 times cycle as imposed frequency is detected when compressor motor operates normally but 2 times cycle when compressor motor locks when the position signal in 2 times cycle is detected 201
- Troubleshooting 201
- Applicable models rxq5 48ma 202
- Closed stop value 202
- Detects the overcurrent with current sensor ct 202
- Faulty compressor 202
- Faulty current sensor 202
- Faulty magnetic switch 202
- Improper power voltage 202
- Malfunction decision conditions 202
- Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 202
- Method of malfunction detection 202
- Note abnormal case 202
- Obstacles at the discharge port 202
- Outdoor unit std compressor motor overcurrent lock 202
- Remote controller display 202
- Supposed causes 202
- The current sensor value is 0 during std compressor operation 202
- The current sensor value is more than 15 a during std compressor operation 202
- Troubleshooting 202
- V unit 15 a 202
- Applicable models rxq5ma 48ma 203
- Clearing condition operate for 5 minutes normal 203
- Fan does not run due to foreign matters tangled 203
- Malfunction decision conditions 203
- Malfunction of fan motor 203
- Malfunction of fan motor system is detected according to the fan speed detected by hall ic when the fan motor runs 203
- Method of malfunction detection 203
- Outdoor unit malfunction of outdoor unit fan motor 203
- Remote controller display 203
- Supposed causes 203
- The harness connector between fan motor and pc board is left in disconnected or faulty connector 203
- Troubleshooting 203
- When connector detecting fan speed is disconnected 203
- When malfunction is generated 4 times the system shuts down 203
- When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor running conditions are met 203
- Note refer check 1 2 and 3 to p 5 204
- Si39 501 troubleshooting by indication on the remote controller 204
- Troubleshooting 204
- Troubleshooting 193 204
- Applicable models rxq5ma 48ma 205
- Check disconnection of connector check continuity of expansion valve coil 205
- Defect of connecting cable 205
- Defect of moving part of electronic expansion valve 205
- Defect of outdoor unit pc board a1p 205
- Error is generated under no common power supply when the power is on 205
- Malfunction decision conditions 205
- Method of malfunction detection 205
- Outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 205
- Remote controller display 205
- Supposed causes 205
- Troubleshooting 205
- Coil check method for the moving part of the electronic expansion valve disconnect the electronic expansion valve from the pc board and check the continuity between the connector pins 206
- Continuity no continuity 206
- Normal 206
- Outdoor unit abnormal discharge pipe temperature 207
- Refrigerant overcharged 208
- Abnormal fan motor signal circuit malfunction 209
- Abnormal outdoor fan motor signal 209
- Applicable models rxq5ma 48ma 209
- Broken short or disconnection connector of fan motor connection cable 209
- Detection of abnormal signal from fan motor 209
- Disconnect connector x2a and measure the following resistance 209
- Fan inverter pc board malfunction 209
- In case of detection of abnormal signal at starting fan motor 209
- Malfunction decision conditions 209
- Method of malfunction detection 209
- Remote controller display 209
- Supposed causes 209
- Troubleshooting 209
- 2 refer to thermistor resistance temperature characteristics table on p312 210
- Applicable models rxq5ma 48ma 210
- Defect of outdoor unit pc board a1p 210
- Defect of thermistor r1t for outdoor air 210
- Malfunction decision conditions 210
- Method of malfunction detection 210
- Outdoor unit malfunction of thermistor for outdoor air r1t 210
- Remote controller display 210
- Supposed causes 210
- The abnormal detection is based on current detected by current sensor 210
- The alarm indicator is displayed when the fan only is being used also 210
- Troubleshooting 210
- When the outside air temperature sensor has short circuit or open circuit 210
- Applicable models rxq5ma 48ma 211
- Current sensor malfunction 211
- Faulty current sensor 211
- Faulty outdoor unit pc board 211
- Malfunction decision conditions 211
- Malfunction is detected according to the current value detected by current sensor 211
- Method of malfunction detection 211
- Remote controller display 211
- Supposed causes 211
- Troubleshooting 211
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 211
- Outdoor unit malfunction of discharge pipe thermistor r3 r31 33t 212
- 2 refer to thermistor resistance temperature characteristics table on p312 213
- Applicable models rxq5ma 48ma 213
- Defect of outdoor unit pc board a1p 213
- Defect of thermistor r2t for outdoor unit suction pipe 213
- Malfunction decision conditions 213
- Malfunction is detected from the temperature detected by the suction pipe temperature thermistor 213
- Method of malfunction detection 213
- Outdoor unit malfunction of thermistor r2t for suction pipe 213
- Remote controller display 213
- Supposed causes 213
- Troubleshooting 213
- When a short circuit or an open circuit in the suction pipe temperature thermistor is detected 213
- 2 refer to thermistor resistance temperature characteristics table on p312 214
- Applicable models rxq5ma 48ma 214
- Defect of outdoor unit pc board a1p 214
- Defect of thermistor r4t for outdoor unit coil 214
- Malfunction decision conditions 214
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 214
- Method of malfunction detection 214
- Outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger 214
- Remote controller display 214
- Supposed causes 214
- Troubleshooting 214
- When a short circuit or an open circuit in the heat exchange thermistor is detected 214
- 2 refer to thermistor resistance temperature characteristics table on p312 215
- Applicable models rxq5ma 48ma 215
- Faulty outdoor unit pc board 215
- Faulty receiver outlet liquid pipe thermistor r6t 215
- Malfunction decision conditions 215
- Malfunction is detected according to the temperature detected by receiver outlet liquid pipe thermistor 215
- Malfunction of receiver outlet liquid pipe thermistor r6t 215
- Method of malfunction detection 215
- Remote controller display 215
- Supposed causes 215
- Troubleshooting 215
- When the receiver outlet liquid pipe thermistor is short circuited or open 215
- 2 refer to thermistor resistance temperature characteristics table on p312 216
- Applicable models rxq5ma 48ma 216
- Faulty outdoor unit pc board 216
- Faulty subcooling heat exchanger gas pipe thermistor r5t 216
- Malfunction decision conditions 216
- Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 216
- Malfunction of subcooling heat exchanger gas pipe thermistor r5t 216
- Method of malfunction detection 216
- Remote controller display 216
- Supposed causes 216
- Troubleshooting 216
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 216
- 1 voltage measurement point 217
- 2 refer to pressure sensor pressure voltage characteristics table on p314 217
- Applicable models rxq5ma 48ma 217
- Connection of low pressure sensor with wrong connection 217
- Defect of high pressure sensor system 217
- Defect of outdoor unit pc board 217
- Malfunction decision conditions 217
- Malfunction is detected from the pressure detected by the high pressure sensor 217
- Method of malfunction detection 217
- Outdoor unit malfunction of discharge pipe pressure sensor 217
- Remote controller display 217
- Supposed causes 217
- Troubleshooting 217
- When the discharge pipe pressure sensor is short circuit or open circuit 217
- Outdoor unit malfunction of suction pipe pressure sensor 218
- 2 refer to thermistor resistance temperature characteristics table on p312 219
- Actuation of fin thermal actuates above 98 c 219
- Applicable models rxq5ma 48ma 219
- Defect of fin thermistor 219
- Defect of inverter pc board 219
- Fin temperature is detected by the thermistor of the radiation fin 219
- Malfunction decision conditions 219
- Method of malfunction detection 219
- Outdoor unit malfunction of inverter radiating fin temperature rise 219
- Remote controller display 219
- Supposed causes 219
- Troubleshooting 219
- When the temperature of the inverter radiation fin increases above 98 c 219
- Applicable models rxq5ma 48ma 220
- Compressor start up malfunction mechanical lock 220
- Defect of compressor coil disconnected defective insulation 220
- Defect of inverter pc board 220
- Higher voltage than actual is displayed when the inverter output voltage is checked by tester 220
- Malfunction decision conditions 220
- Malfunction is detected from current flowing in the power transistor 220
- Method of malfunction detection 220
- Outdoor unit inverter compressor abnormal 220
- Remote controller display 220
- Supposed causes 220
- Troubleshooting compressor inspection 220
- When an excessive current flows in the power transistor instantaneous overcurrent also causes activation 220
- Applicable models rxq5ma 48ma 221
- Compressor coil disconnected 221
- Compressor overload 221
- Defect of inverter pc board 221
- Malfunction decision conditions 221
- Malfunction is detected by current flowing in the power transistor 221
- Method of malfunction detection 221
- Outdoor unit inverter current abnormal 221
- Remote controller display 221
- Supposed causes 221
- Troubleshooting output current check 221
- When overload in the compressor is detected inverter secondary current 15 a 221
- Applicable models rxq5ma 48ma 222
- Defect of compressor 222
- Defect of inverter pc board 222
- Malfunction decision conditions 222
- Malfunction is detected from current flowing in the power transistor 222
- Method of malfunction detection 222
- Outdoor unit inverter start up error 222
- Pressure differential start 222
- Remote controller display 222
- Supposed causes 222
- Troubleshooting 222
- When overload in the compressor is detected during startup inverter secondary current 15 a 222
- Outdoor unit malfunction of transmission between inverter and control pc board 223
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 224
- Si39 501 troubleshooting by indication on the remote controller 224
- Troubleshooting 224
- Troubleshooting 213 224
- Applicable models rxq5ma 48ma 225
- Defect of inverter pc board 225
- Defect of k1m 225
- Defect of main circuit capacitor 225
- Imbalance in supply voltage is detected in pc board 225
- Improper main circuit wiring 225
- Malfunction decision conditions 225
- Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button 225
- Method of malfunction detection 225
- Open phase 225
- Outdoor unit inverter over ripple protection 225
- Remote controller display 225
- Supposed causes 225
- Troubleshooting 225
- Voltage imbalance between phases 225
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 225
- Outdoor unit malfunction of inverter radiating fin temperature rise sensor 226
- 1 refer to thermistor resistance temperature characteristics table on p312 2 refer to pressure sensor pressure voltage characteristics table on p314 227
- Applicable models rxq5ma 48ma 227
- Defect of outdoor unit pc board a1p 227
- Defect of pressure sensor 227
- Defect of thermistor r2t or r4t 227
- Low pressure drop due to refrigerant shortage or electronic expansion valve failure 227
- Malfunction decision conditions 227
- Malfunction is not decided while the unit operation is continued 227
- Method of malfunction detection 227
- Microcomputer judge and detect if the system is short of refrigerant 227
- Out of gas or refrigerant system clogging incorrect piping 227
- Remote controller display 227
- Short of gas malfunction is detected by discharge pipe temperature thermistor 227
- Supposed causes 227
- Troubleshooting 227
- Applicable models 228
- Defect of outdoor pc board a1p 228
- Malfunction decision conditions 228
- Method of malfunction detection 228
- Phase outdoor unit only 228
- Power supply open phase 228
- Power supply reverse phase 228
- Remote controller display 228
- Reverse phase open phase 228
- Supposed causes 228
- The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 228
- Troubleshooting 228
- When a significant phase difference is made between phases 228
- Outdoor unit power supply insufficient or instantaneous failure 229
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 230
- Is the voltage of power supply 380 415v 230
- Si39 501 troubleshooting by indication on the remote controller 230
- Troubleshooting 230
- Troubleshooting 219 230
- Outdoor unit check operation not executed 231
- Malfunction of transmission between indoor units 232
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 233
- Troubleshooting 233
- Troubleshooting by indication on the remote controller si39 501 233
- Applicable models all models of indoor units 234
- Connection of two main remote controllers when using 2 remote controllers 234
- Defect of indoor unit pc board 234
- Defect of remote controller pc board 234
- 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 234
- Indoor unit malfunction of transmission between remote controller and indoor unit 234
- Malfunction decision conditions 234
- Malfunction of indoor unit remote controller transmission 234
- Malfunction of transmission caused by noise 234
- Method of malfunction detection 234
- Normal transmission does not continue for specified period 234
- Remote controller display 234
- Supposed causes 234
- Troubleshooting 234
- Indoor unit malfunction of transmission between outdoor units 235
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 236
- Si39 501 troubleshooting by indication on the remote controller 236
- Troubleshooting 236
- Troubleshooting 225 236
- Applicable models all models of indoor units 237
- Connection between sub remote controllers 237
- Defect of remote controller pc board 237
- 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 237
- Indoor unit malfunction of transmission between main and sub remote controllers 237
- Malfunction decision conditions 237
- Malfunction of transmission between main and sub remote controller 237
- Method of malfunction detection 237
- Normal transmission does not continue for specified period 237
- Remote controller display 237
- Supposed causes 237
- Troubleshooting 237
- Malfunction of transmission between indoor and outdoor units in the same system 238
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 239
- Troubleshooting 239
- Troubleshooting by indication on the remote controller si39 501 239
- A difference occurs in data by the type of refrigerant between indoor and outdoor units the number of indoor units is outside of the allowable range 240
- Applicable models all models of indoor unit rxq5ma 48ma remote controller 240
- Defect of outdoor unit pc board a1p 240
- Excess of connected indoor units 240
- Improper combination of indoor and outdoor units indoor unit and remote controller 240
- Malfunction decision conditions 240
- Method of malfunction detection 240
- Mismatching of the refrigerant type of indoor and outdoor unit 240
- Remote controller display 240
- Setting of outdoor pc board was not conducted after replacing to spare parts pc board 240
- Supposed causes 240
- The malfunction decision is made as soon as either of the abnormalities aforementioned is detected 240
- The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit 240
- Troubleshooting 240
- Address duplication of centralized controller 241
- Malfunction of transmission between centralized controller and indoor unit 242
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 243
- Troubleshooting 243
- Troubleshooting by indication on the remote controller si39 501 243
- Applicable models all models of indoor units rxq5ma 48ma 244
- Defect of indoor unit pc board 244
- Failure to execute check operation 244
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 244
- Malfunction decision conditions 244
- Method of malfunction detection 244
- 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 244
- 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 244
- Remote controller display 244
- Stop valve is left in closed 244
- Supposed causes 244
- System is not set yet 244
- 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 244
- Troubleshooting 244
- Applicable models all models of indoor units rxq5ma 48ma 245
- Defect of indoor unit pc board 245
- Defect of outdoor unit pc board a1p 245
- Detect an indoor unit with no address setting 245
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 245
- Malfunction decision conditions 245
- Malfunction of system refrigerant system address undefined 245
- Method of malfunction detection 245
- Remote controller display 245
- Supposed causes 245
- The malfunction decision is made as soon as the abnormality aforementioned is detected 245
- Troubleshooting 245
- Pc board defect 246
- Troubleshooting op central remote controller 246
- Malfunction of transmission between optional controllers for centralized control 247
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 248
- Si39 501 troubleshooting op central remote controller 248
- Troubleshooting 248
- Troubleshooting 237 248
- Improper combination of optional controllers for centralized control 249
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 250
- Si39 501 troubleshooting op central remote controller 250
- Troubleshooting 250
- Troubleshooting 239 250
- Address duplication improper setting 251
- Malfunction of transmission between centralized controller and indoor unit 252
- Troubleshooting op schedule timer 252
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 253
- Troubleshooting 253
- Troubleshooting op schedule timer si39 501 253
- Pc board defect 254
- Applicable models schedule timer 255
- Defect of pc board of optional controllers for centralized control 255
- Detect the malfunction according to diii net transmission data the system will be automatically reset 255
- Malfunction decision conditions 255
- Malfunction of transmission between optional controllers for centralized control 255
- Method of malfunction detection 255
- Remote controller display 255
- Supposed causes 255
- Troubleshooting 255
- When the centralized controller which was connected once shows no response 255
- Improper combination of optional controllers for centralized control 256
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 257
- Troubleshooting 257
- Troubleshooting op schedule timer si39 501 257
- Address duplication improper setting 258
- Operation lamp blinks 259
- Troubleshooting op unified on off controller 259
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 260
- Si39 501 troubleshooting op unified on off controller 260
- Troubleshooting 260
- Troubleshooting 249 260
- Display under centralized control blinks repeats single blink 261
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 262
- Si39 501 troubleshooting op unified on off controller 262
- Troubleshooting 262
- Troubleshooting 251 262
- Troubleshooting 263
- Troubleshooting op unified on off controller si39 501 263
- Applicable models unified on off controller 264
- Central control address group no is not set for indoor unit 264
- Detect the malfunction according to diii net transmission data 264
- Display under centralized control blinks repeats double blink 264
- Improper control range setting switch 264
- Improper wiring of transmission wiring 264
- Malfunction decision conditions 264
- Method of malfunction detection 264
- Remote controller display 264
- Si39 501 troubleshooting op unified on off controller 264
- Supposed causes 264
- Troubleshooting 264
- Troubleshooting 253 264
- Under centralized control repeats double blink 264
- When no central control addresses are set to indoor units when no indoor units are connected within the control range 264
- Check no 1 check on pulse input of position signal of fan inverter pcb 1 disconnect the connector x2a while power supply off and operation off 2 is the voltage between pins no 4 and 5 on x2a approx 15 v after power supply is turned on 3 connect the connector x2a while power supply off and operation off 4 check below conditions when the fan motor is rotated one turn manually under the condition of operation off after power supply is turned on are the pulse approx 0 v and 5 v generated 4 times between no 1 and 5 on x2a are the pulse approx 0 v and 5 v generated 4 times between no 2 and 5 on x2a are the pulse approx 0 v and 5 v generated 4 times between no 3 and 5 on x2a 265
- Check no 2 check on connector of fan motor power supply cable 1 turn off the power supply measure the resistance between phases of u v w at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected 266
- Check no 3 1 turn off the power supply 2 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 while connector or relay connector is disconnected 266
- Si39 501 troubleshooting op unified on off controller 266
- Troubleshooting 255 266
- List of electrical and functional parts 92 268
- Option list 00 268
- Part 7 appendix 268
- Part 7 part 7 part 7 part 7 appendix appendix appendix appendix 268
- Piping diagrams 58 268
- Piping installation point 03 268
- Selection of pipe size joints and header 07 268
- Thermistor resistance temperature characteristics 12 8 pressure sensor 14 9 method of replacing the inverter s power transistors and diode modules 15 268
- Wiring diagrams for reference 68 268
- Outdoor unit 269
- Piping diagrams 269
- Rxq5ma 269
- Rxq8ma rxq10ma 270
- Rxq12ma 271
- Rxq14ma rxq16ma 272
- Electronic expansion valve filter filter 273
- Flare connectio 273
- Flare connection 273
- Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 273
- Gas piping connection port 273
- Heat exchanger 273
- Indoor unit 273
- Liquid piping connection port 273
- Φ 15 or less attached piping above φ 19 273
- Refrigerant pipe connection port diameters 274
- Fxmq125mfv1 200mfv1 250mfv1 275
- Refrigerant pipe connection port diameters 275
- Connection unit 276
- Fxuq bevq 276
- Indoor unit 276
- Connection unit 277
- Fxaq bevq 277
- Indoor unit 277
- Connection unit 278
- Fxlq bevq 278
- Indoor unit 278
- Outdoor unit 279
- Rxq5may1 279
- Wiring diagrams for reference 279
- Rxq8may1 rxq10may1 rxq12may1 280
- Rxq14may1 rxq16may1 281
- Field wiring 282
- Rxq5 8 10 12 14 16may1 282
- Rxq18 20 22 24 26 28 30 32may1 283
- Rxq34 36 38 40 42 44 46 48may1 284
- Fxcq20m 25m 32m 63mve 285
- Indoor unit 285
- Fxcq40m 50m 80m 125mve 286
- Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 287
- Fxkq25m 32m 40m 63mve 288
- Fxdq20n 25n 32n 40n 50n 63nve with drain pump 289
- Fxdq20n 25n 32n 40n 50n 63nvet without drain pump 290
- Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 291
- Fxmq40m 50m 63m 80m 100m 125mve 292
- Fxmq200m 250mve 293
- Fxhq32m 63m 100mve 294
- Fxaq20m 25m 32mve 40m 50m 63mve 295
- Fxlq20m 25m 32m 40m 50m 63mve fxnq20m 25m 32m 40m 50m 63mve 296
- Fxuq71m 100m 125mv1 297
- Fxaq20mh 25mh 32mh 40mh 50mhv1 298
- Fxlq20mh 25mh 32mh 40mh 50mhv1 299
- Fxmq125mf 200mf 250mfv1 300
- Bevq50mve 301
- Bevq71m 100m 125mve 302
- List of electrical and functional parts 303
- Outdoor unit 303
- Rxq5may1 16may1 303
- Appendix 305
- C off 87 c on 305
- Indoor side 305
- Indoor unit 305
- List of electrical and functional parts si39 501 305
- Appendix 295 306
- Si39 501 list of electrical and functional parts 306
- Appendix 307
- List of electrical and functional parts si39 501 307
- Appendix 297 308
- K ω 25 c 308
- Si39 501 list of electrical and functional parts 308
- St8602a 6 φ 6 308
- St8605 6 φ 8 308
- Μ f 400v 308
- Appendix 309
- List of electrical and functional parts si39 501 309
- Appendix 299 310
- Si39 501 list of electrical and functional parts 310
- Thermal protector 130 c off 83 c on 310
- 2 up to 2 adaptors can be fixed for each installation box 3 only one installation box can be installed for each indoor unit 4 up to 2 installation boxes can be installed for each indoor unit 5 installation box no 8 is necessary for second adaptor 6 installation box no 8 is necessary for each adaptor 7 this adaptor is required when connecting with optional controller for centralized control 8 brc2a51 is also available various pc boards 311
- Adaptor must be procured on site 311
- Appendix 311
- Note 1 installation box no is necessary for each adaptor marked 311
- Note installation box for 311
- Operation control system optional accessories 311
- Option list 311
- Option list of controllers 311
- Option list si39 501 311
- System configuration 311
- Appendix 301 312
- Building management system 312
- Is a registered trade mark of echelon corporation 312
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 312
- Please refer to option handbook etc for detail 312
- Ppd does not support connection unit series 312
- Si39 501 option list 312
- Appendix 313
- Option list si39 501 313
- Option lists outdoor unit 313
- Rxq18 32may1 313
- Rxq34 48may1 313
- Rxq5 16may1 313
- Piping installation point 314
- Note refer to page 307 note 2 in case of up to 90m 315
- The example of a wrong pattern 315
- Appendix 305 316
- Branch with refnet joint branch with refnet joint and refnet header branch with refnet header 316
- Example of connection 316
- First outdoor branch 316
- How to calculate the additional refrigerant to be charged 316
- Indoor units 1 8 316
- Outdoor unit 316
- Outdoor unit refnet header 316
- Outdoor unit refnet joint a g 316
- Outdoor unit refnet joint a g refnet joint a b 316
- Pipe size selection 316
- Refnet header 316
- Refnet joint a b 316
- Refrigerant branch kit selection 316
- Si39 501 example of connection r 410a type 316
- A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 510 m 317
- Allowable length after the first refrigerant branch kit to indoor units is 40 m or less however it can be extended up to 90 m if all the following conditions are satisfied in case of branch with refnet joint 317
- B c d e f g p 90 m increase the pipe size of b c d e f g 317
- Example drawings 317
- For calculation of total extension length the actual length of above pipes must be doubled except main pipe 317
- H i j p 40 m 317
- If available on the site use this size otherwise it can not be increased 317
- Increase the pipe size as follows 317
- Indoor unit to the nearest branch ki 317
- Indoor units 1 8 317
- It is necessary to increase the pipe size between the first branch kit and the final branch kit reducers must be procured on site 317
- N diameter of above case 317
- Note 1 317
- Note 2 317
- Outdoor unit refnet joint a g 317
- Required conditions 317
- The difference between outdoor unit to the farthest indoor unit and outdoor unit to the nearest indoor unit 40 m 317
- The farthest indoor unit 8 the nearest indoor unit 1 a b c d e f g p a h 40 m 317
- When overall equivalent pipe length is 90 m or more the size of the main gas and liquid pipes outdoor unit first branch kit must be increased 317
- Between outdoor unit and uppermost stream refnet joint 318
- For refnet joints other than the first branch select the proper ones based on the total capacity index of the indoor units installed after the first branch using the following table 318
- How to select pipe size 318
- How to select the refnet joint 318
- How to select the refnet joint select the refnet joint from the following table when using refnet joints at the first branch counted from the outdoor unit side ex refnet joint a 318
- Piping material select the piping material to be used from the next table according to piping size 318
- Rxq5may1 rxq8may1 rxq10may1 rxq12may1 rxq14may1 rxq16may1 318
- Selection of pipe size joints and header 318
- The table shows the requirements of japanese high pressure gas control low the thickness and material shall be selected in accordance with local code as of jan 003 318
- Wall thickness of refrigerant pipe 318
- How to select the refnet header 319
- Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit 319
- Piping between the refnet joints 319
- Piping between the refnet joints and indoor unit 319
- Select the proper pipe size using the following table based on the total capacity index of indoor units connected downstream connection piping size should not exceed the refrigerant piping size selected by the model with combination units 319
- When connecting the indoor unit larger than 250 or more use with khrp26m33t m72t to upper stream side do not connect downstream side select the proper refnet header using the following table based on the total capacity index of indoor units installed after the header 319
- For refnet joints other than the first branch select the proper ones based on the total capacity index of the indoor units installed after the first branch using the following table 320
- How to select pipe size 320
- How to select the refnet joint 320
- How to select the refnet joint select the refnet joint from the following table when using refnet joints at the first branch counted from the outdoor unit side 320
- Main piping between multi connection piping kit and refnet joint select the proper ones based on the following table 320
- Piping material select the piping material to be used from the next table according to piping size 320
- Rxq18may1 rxq20may1 rxq22may1 rxq24may1 rxq26may1 rxq28may1 rxq30may1 rxq32may1 rxq34may1 rxq36may1 rxq38may1 rxq40may1 rxq42may1 rxq44may1 rxq46may1 rxq48may1 320
- How to select the refnet header 321
- Piping between the multi connection piping kit 321
- Piping between the refnet joints 321
- Select the proper pipe size using the following table based on the total capacity index of indoor units connected downstream connection piping size should be larger than main piping size connection piping size should not exceed the refrigerant piping size selected by the model with combination units 321
- Select the proper pipe size using the following table based on the total capacity index of outdoor units connected upper stream 321
- Select the proper refnet header using the following table based on the total capacity index of indoor units installed after the header 321
- The table shows the requirements of japanese high pressure gas control low the thickness and material shall be selected in accordance with local code as of jan 003 321
- Wall thickness of refrigerant pipe 321
- When using refnet joints at the first branch counted from the outdoor unit side use khrp26m73h for larger than rxq26my1b 321
- Outdoor unit multi connection piping kit 322
- Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit 322
- Pipe size for direct connection to outdoor unit must be the same as the connection size of outdoor unit 322
- Piping between outdoor unit and multi connection piping kit 322
- Piping between refnet joint and indoor unit 322
- Select the piping kit according to the no of outdoor units 322
- Appendix 323
- For gas pipe r3t 323
- For suction pipe r4t for receiver gas pipe r5t 323
- Indoor unit for air suction r1t for liquid pipe r2t 323
- Outdoor unit for fin thermistor r1t 323
- Outdoor unit for outdoor air r1t for coil r2t 323
- Thermistor resistance temperature characteristics 323
- Thermistor resistance temperature characteristics si39 501 323
- Appendix 313 324
- Outdoor unit thermistors for discharge pipe r3t r3 324
- Si39 501 thermistor resistance temperature characteristics 324
- Pressure sensor 325
- Before checking disconnect the electric wiring connected to the power transistor and diode module 326
- Decision according to continuity check by analog tester 326
- Electronic circuit 326
- Inverter p c board 326
- Inverter pc board a2p 326
- Method of replacing the inverter s power transistors and diode modules 326
- Part 8 precautions for new refrigerant r 410a 328
- About refrigerant r 410a 329
- 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 few problems in composition control since it is a quasi azeotropic mixture refrigerant 329
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 329
- Outline 329
- Precautions for new refrigerant r 410a 329
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 329
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 329
- Precautions for new refrigerant r 410a 319 330
- Si39 501 precautions for new refrigerant r 410a 330
- Thermodynamic characteristic of r 410a 330
- Refrigerant cylinders 331
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 332
- Copper tube material and thickness 332
- O soft annealed h hard drawn 332
- R 410a is used under higher working pressure compared to previous refrigerants r 22 r 407c furthermore the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems therefore gauge manifolds and charge hoses that are used with a previous refrigerant r 22 r 407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 332
- Service tools 332
- Tool compatibility 332
- Conventional flaring tools can be used when the work process is changed change of work process previously a pipe extension margin of 0 to 0 mm was provided for flaring for r 410a air conditioners perform pipe flaring with a pipe extension margin of 1 to 1 mm for clutch type only conventional tool with pipe extension margin adjustment can be used 333
- Differences 2 change of dimension a 333
- Flaring tool 333
- Specifications 2 dimension a 333
- Unit mm 333
- Can not be used 336
- Index index index index 338
- Drawings flow charts 342
- Drawings flow charts drawings flow charts drawings flow charts drawings flow charts 342
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