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Daikin RXQ5PAY1 [202/398] Symptom based troubleshooting 94 2 troubleshooting by remote controller 97
![Daikin RXQ5PAY1 [202/398] Symptom based troubleshooting 94 2 troubleshooting by remote controller 97](/views2/1715827/page202/bgca.png)
Si34-804
Troubleshooting 191
Part 6
Troubleshooting
1. Symptom-based Troubleshooting .......................................................194
2. Troubleshooting by Remote Controller ...............................................197
2.1 The INSPECTION / TEST Button.........................................................197
2.2 Self-diagnosis by Wired Remote Controller .........................................198
2.3 Self-diagnosis by Wireless Remote Controller .....................................199
2.4 Operation of the Remote Controller’s Inspection /
Test Operation Button ..........................................................................202
2.5 Remote Controller Service Mode .........................................................203
2.6 Remote Controller Self-Diagnosis Function .........................................205
3. Troubleshooting by Indication on the Remote Controller ....................212
3.1 “A0” Indoor Unit: Error of External Protection Device............................212
3.2 “
A1
” Indoor Unit: PC Board Defect ........................................................213
3.3 “
A3
” Indoor Unit: Malfunction of Drain Level Control System (S1L) ......214
3.4 “
A6
” Indoor Unit: Fan Motor (M1F) Lock, Overload...............................216
3.5 “
A7” Indoor Unit: Malfunction of Swing Flap Motor (M1S).....................220
3.6 “
A8
” Abnormal Power Supply Voltage...................................................222
3.7 “
A9
” Indoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E)........................................................223
3.8 “AF
” Indoor Unit: Drain Level above Limit .............................................225
3.9 “
AJ
” Indoor Unit: Malfunction of Capacity Determination Device ..........226
3.10 “
C1
” Indoor Unit: Failure of Transmission
(Between Indoor unit PC Board and Fan PC Board)............................227
3.11 “
C4
” Indoor Unit: Malfunction of Thermistor (R2T) for
Heat Exchanger....................................................................................229
3.12 “C5
” Indoor Unit: Malfunction of Thermistor (R3T) for
Gas Pipes.............................................................................................230
3.13 “C6
” Indoor Unit: Failure of Combination
(Between Indoor unit PC Board and Fan PC Board)............................231
3.14 “
C9
” Indoor Unit: Malfunction of Thermistor (R1T) for
Suction Air ............................................................................................232
3.15 “CC
” Indoor Unit: Malfunction of Humidity Sensor System ....................233
3.16 “
CJ
” Indoor Unit: Malfunction of Thermostat Sensor
in Remote Controller ............................................................................234
3.17 “E1
” Outdoor Unit: PC Board Defect .....................................................235
3.18 “
E3
” Outdoor Unit: Actuation of High Pressure Switch..........................236
3.19 “
E4
” Outdoor Unit: Actuation of Low Pressure Sensor..........................238
3.20 “
E5
” Outdoor Unit: Inverter Compressor Motor Lock.............................240
3.21 “
E6
” Outdoor Unit: STD Compressor Motor Overcurrent/Lock..............242
3.22 “
E7
” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor ...................243
3.23 “
E9
” Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E, Y2E)...............................................246
3.24 “F3
” Outdoor Unit: Abnormal Discharge Pipe Temperature..................248
3.25 “
F6
” Outdoor Unit: Refrigerant Overcharged.........................................249
3.26 “
H7
” Outdoor Unit: Abnormal Outdoor Fan Motor Signal ......................250
Содержание
- Basic control 2 2
- Combination of outdoor units 4 model selection 2
- Function general 0 2
- Functional parts layout 5 2
- Introduction vi 2
- Model names of indoor outdoor units 2 external appearance 2
- Part 1 general information 2
- Part 2 specifications 1 2
- Part 3 refrigerant circuit 5 2
- Part 4 function 9 2
- R 410a cooling only 50hz 2
- Refrigerant circuit 6 2
- Refrigerant flow for each operation mode 0 2
- Specifications 2 2
- Table of contents 2
- Other control 15 3
- Outdoor unit pc board layout 52 3 field setting 53 3
- Outline of control indoor unit 23 3
- Part 5 test operation 33 3
- Part 6 troubleshooting 91 3
- Protection control 10 3
- Special control 04 3
- Symptom based troubleshooting 94 2 troubleshooting by remote controller 97 3
- Test operation 34 3
- Troubleshooting by indication on the remote controller 12 4
- Part 7 appendix 15 5
- Piping diagrams 16 5
- Troubleshooting op central remote controller 97 5
- Troubleshooting op unified on off controller 05 5
- Wiring diagrams for reference 24 5
- Drawings flow charts v 6
- Example of connection r 410a type 63 7 thermistor resistance temperature characteristics 65 8 pressure sensor 67 9 method of checking the inverter s power transistors and diode modules 68 6
- Index i 6
- List of electrical and functional parts 47 6
- Option list 57 6
- Part 8 precautions for new refrigerant r 410a 71 6
- Piping installation point 61 6
- Precautions for new refrigerant r 410a 72 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
- Cooling only rxq 13
- Cooling only rxq 5pa 8pa 10pa 12pa 14pa 16pa 18pa 20pa 22pa y1 24pa 26pa 28pa 30pa 32pa 34pa 36pa 38pa 40pa 42pa 44pa 46pa 48pa 50pa 52pa 54pa 13
- General information 13
- High cop series energy saving series 13
- Indoor units 13
- Model names of indoor outdoor units 13
- Model names of indoor outdoor units si34 804 13
- Note fxdq has following 2 series as show below fxdq pb nbvet without drain pump fxdq pb nbve with drain pump bev unit is required for each indoor unit ma rohs directive models specifications dimensions and other functions are not changed compared with m type 13
- Outdoor units normal series 13
- Pah 18pah 24pah 26pah 28pah 30pah 32pah 34pah 36pah 13
- Pah 40pah 42pah 44pah 46pah 48pah 50pah 13
- Power supply ve 1 phase 220 240v 50hz v1 1 phase 220 240v 50hz y1 3 phase 380 415v 50hz 13
- Series model name power supply 13
- Ceiling mounted built in type 14
- Ceiling mounted cassette corner type 14
- Ceiling mounted cassette type double flow 14
- Ceiling mounted cassette type round flow 14
- Ceiling mounted duct type 14
- Ceiling mounted duct type middle and high static pressure 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
- General information 3 14
- Indoor units 14
- Si34 804 external appearance 14
- Slim ceiling mounted duct type 14
- Wall mounted type 14
- External appearance si34 804 15
- General information 15
- Normal series space saving series 15
- Outdoor units 15
- Rxq12pa 14pa 16pa 18pa 15
- Rxq20pa 22pa 24pa 26pa 28pa rxq30pa 32pa 34pa 36pa 15
- Rxq38pa 40pa 42pa 44pa 46pa rxq48pa 50pa 52pa 54pa 15
- Rxq5pa rxq8pa 10pa 15
- High cop series energy saving series 16
- Combination of outdoor units 17
- General information 19
- High cop type energy saving type 19
- Model selection 19
- Model selection si34 804 19
- Outdoor units normal type space saving type 19
- Vrv iii cooling only series 19
- Connectable indoor unit 20
- General information 9 20
- Hp 2 hp 2 hp 3 hp 4hp 5hp 8hp 10hp 20
- 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 20
- Indoor unit capacity 20
- 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 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 20
- Note fxdq has following 2 series as show below fxdq pb nbvet without drain pump fxdq pb nbve with drain pump bev unit is required for each indoor unit 20
- Si34 804 model selection 20
- The total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit 20
- 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 20
- Differences from conventional models 21
- Part 2 specifications 22
- Specifications 2 22
- Outdoor units 23
- Specifications 23
- Specifications si34 804 23
- Si34 804 specifications 24
- Specifications 13 24
- Specifications 25
- Specifications si34 804 25
- Si34 804 specifications 26
- Specifications 15 26
- Specifications 27
- Specifications si34 804 27
- Si34 804 specifications 28
- Specifications 17 28
- Specifications 29
- Specifications si34 804 29
- Si34 804 specifications 30
- Specifications 19 30
- Specifications 31
- Specifications si34 804 31
- Si34 804 specifications 32
- Specifications 21 32
- Specifications 33
- Specifications si34 804 33
- Si34 804 specifications 34
- Specifications 23 34
- Specifications 35
- Specifications si34 804 35
- Si34 804 specifications 36
- Specifications 25 36
- Specifications 37
- Specifications si34 804 37
- Si34 804 specifications 38
- Specifications 27 38
- Specifications 39
- Specifications si34 804 39
- Si34 804 specifications 40
- Specifications 29 40
- Specifications 41
- Specifications si34 804 41
- Si34 804 specifications 42
- Specifications 31 42
- Specifications 43
- Specifications si34 804 43
- Ceiling mounted cassette round flow type 44
- Indoor units 44
- Si34 804 specifications 44
- Specifications 33 44
- Ceiling mounted cassette round flow type 45
- Specifications 45
- Specifications si34 804 45
- Ceiling mounted cassette type double flow 46
- Si34 804 specifications 46
- Specifications 35 46
- Ceiling mounted cassette type double flow 47
- Specifications 47
- Specifications si34 804 47
- Ceiling mounted cassette corner type 48
- Si34 804 specifications 48
- Specifications 37 48
- Slim ceiling mounted duct type ve with drain pump vet without drain pump 49
- Specifications 49
- Specifications si34 804 49
- Si34 804 specifications 50
- Slim ceiling mounted duct type ve with drain pump vet without drain pump 50
- Specifications 39 50
- Ceiling mounted built in type 51
- Specifications 51
- Specifications si34 804 51
- Ceiling mounted built in type 52
- Si34 804 specifications 52
- Specifications 41 52
- Ceiling mounted built in type 53
- Specifications 53
- Specifications si34 804 53
- Ceiling mounted duct type 54
- Si34 804 specifications 54
- Specifications 43 54
- Ceiling mounted duct type 55
- Specifications 55
- Specifications si34 804 55
- Ceiling mounted duct type 56
- Si34 804 specifications 56
- Specifications 45 56
- Ceiling suspended type 57
- Specifications 57
- Specifications si34 804 57
- Si34 804 specifications 58
- Specifications 47 58
- Wall mounted type 58
- Specifications 59
- Specifications si34 804 59
- Wall mounted type 59
- Floor standing type 60
- Si34 804 specifications 60
- Specifications 49 60
- Floor standing type 61
- Specifications 61
- Specifications si34 804 61
- Concealed floor standing type 62
- Si34 804 specifications 62
- Specifications 51 62
- Concealed floor standing type 63
- Specifications 63
- Specifications si34 804 63
- Bev units 64
- Ceiling suspended cassette type 64
- Si34 804 specifications 64
- Specifications 53 64
- Outdoor air processing unit 65
- Specifications 65
- Specifications si34 804 65
- Functional parts layout 5 66
- Part 3 refrigerant circuit 66
- Refrigerant circuit 6 66
- Refrigerant flow for each operation mode 0 66
- Refirgerant circuit 67
- Refrigerant circuit 67
- Refrigerant circuit si34 804 67
- Rxq5pa 67
- Refirgerant circuit 57 68
- Rxq5pa 68
- Si34 804 refrigerant circuit 68
- Refirgerant circuit 69
- Refrigerant circuit si34 804 69
- Rxq8pa 69
- Refirgerant circuit 59 70
- Rxq8pa 70
- Si34 804 refrigerant circuit 70
- Refirgerant circuit 71
- Refrigerant circuit si34 804 71
- Rxq10pa 12pa 71
- Refirgerant circuit 61 72
- Rxq10pa 12pa 72
- Si34 804 refrigerant circuit 72
- Refirgerant circuit 73
- Refrigerant circuit si34 804 73
- Rxq14pa 16pa 18pa 73
- Refirgerant circuit 63 74
- Rxq14pa 16pa 18pa 74
- Si34 804 refrigerant circuit 74
- Main control equipment 75
- Outdoor air processing unit fxmq125mfv1 250mfv1 75
- Refrigerant system 75
- Sh control superheated control of heat exchanger outlet sc control subcooling control of heat exchanger outlet 75
- Thermistor 75
- Front view 76
- Functional parts layout 76
- Refirgerant circuit 65 76
- Rxq5pa 76
- Si34 804 functional parts layout 76
- Front view 77
- Functional parts layout si34 804 77
- Refirgerant circuit 77
- Rxq8pa 77
- Accumulator 78
- Front view 78
- Heat exchanger 78
- Refirgerant circuit 67 78
- Rxq10pa 78
- Si34 804 functional parts layout 78
- Accumulator 79
- Front view 79
- Functional parts layout si34 804 79
- Heat exchanger 79
- Refirgerant circuit 79
- Rxq12pa 79
- Accumulator 80
- Front view 80
- Heat exchanger 80
- Refirgerant circuit 69 80
- Rxq14pa 16pa 18pa 80
- Si34 804 functional parts layout 80
- Refirgerant circuit 81
- Refrigerant flow for each operation mode 81
- Refrigerant flow for each operation mode si34 804 81
- Rxq5pa cooling operation 81
- Cooling oil return operation 82
- Refirgerant circuit 71 82
- Si34 804 refrigerant flow for each operation mode 82
- Refirgerant circuit 83
- Refrigerant flow for each operation mode si34 804 83
- Rxq8pa cooling operation 83
- Cooling oil return operation 84
- Refirgerant circuit 73 84
- Si34 804 refrigerant flow for each operation mode 84
- Refirgerant circuit 85
- Refrigerant flow for each operation mode si34 804 85
- Rxq10pa 12pa cooling operation 85
- Cooling oil return operation 86
- Refirgerant circuit 75 86
- Si34 804 refrigerant flow for each operation mode 86
- Refirgerant circuit 87
- Refrigerant flow for each operation mode si34 804 87
- Rxq14pa 16pa 18pa cooling operation 87
- Cooling oil return operation 88
- Refirgerant circuit 77 88
- Si34 804 refrigerant flow for each operation mode 88
- Basic control 2 90
- Function general 0 90
- Other control 15 90
- Outline of control indoor unit 23 90
- Part 4 function 90
- Protection control 10 90
- Special control 04 90
- Function general 91
- Symbol 91
- Operation mode 92
- 1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant 1 and 2 refer 6 electronic expansion valve control on page 128 93
- Basic control 93
- List of functions in normal operation 93
- Normal operation 93
- Compressor pi control 94
- Compressor pi control carries out the compressor capacity pi control to maintain te at constant during cooling operation to ensure stable unit performance 94
- Cooling operation 94
- Basic control si34 804 95
- Function 95
- Operating priority and rotation of compressors for multi standard connection system 95
- Function 85 96
- 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 96
- Inv std1 std2 96
- No 1 no 4 no 7 96
- No 2 no 5 no 8 96
- No 3 no 6 no 9 96
- Rxq46pa 48pa 96
- Rxq50pa 52pa 54pa 96
- Si34 804 basic control 96
- Basic control si34 804 97
- Compressor step control multi outdoor unit connection is available on the standard connection system 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 97
- Function 97
- Hz stand alone installation rxq5pay1 97
- 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 97
- Operating priority and rotation of compressors 97
- Rxq10pay1 12pay1 97
- Rxq14pay1 16pay1 97
- Rxq18pay1 97
- Rxq8pay1 97
- Function 87 98
- 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 98
- Represents the range in which hz is not stepped up 98
- Rxq20pay1 8 12hp 98
- Rxq22pay1 10 12hp 98
- Si34 804 basic control 98
- Two unit multi system 98
- Basic control si34 804 99
- Function 99
- 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 99
- Represents the range in which hz is not stepped up 99
- Rxq24pay1 8 16hp 99
- Rxq26pay1 8 18hp 99
- Function 89 100
- 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 100
- Represents the range in which hz is not stepped up 100
- Rxq 32pay1 16 16hp 100
- Rxq28pay1 30pay1 10 12 18hp 100
- Si34 804 basic control 100
- Basic control si34 804 101
- Function 101
- 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 101
- Represents the range in which hz is not stepped up 101
- Rxq 34pay1 16 18hp 101
- Rxq36pay1 18 18hp 101
- Function 91 102
- 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 102
- Represents the range in which hz is not stepped up 102
- Rxq 40pay1 8 16 16hp 102
- Rxq38pay1 8 12 18hp 102
- Si34 804 basic control 102
- Three unit multi system 102
- Basic control si34 804 103
- Function 103
- 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 103
- Represents the range in which hz is not stepped up 103
- Rxq 42pay1 8 16 18hp 103
- Rxq44pay1 8 18 18hp 103
- Function 93 104
- 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 104
- Represents the range in which hz is not stepped up 104
- Rxq46pay1 48pay1 10 12 18 18hp 104
- Rxq50pay1 52pay1 14 16 18 18hp 104
- Si34 804 basic control 104
- Basic control si34 804 105
- Function 105
- 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 105
- Rxq54pay1 18 18 18hp 105
- Hz high cop type 106
- Electronic expansion valve pi control 113
- 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 113
- Main motorized valve ev1 control carries out the motorized valve y1e pi control to maintain the evaporator outlet superheated degree sh at constant during heating operation to make maximum use of the outdoor unit heat exchanger evaporator 113
- Step control of outdoor unit fans 113
- 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 113
- The optimum initial value of the evaporator outlet superheated degree is 5 c but varies depending on the discharge pipe superheated degree of inverter compressor 113
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 113
- Outdoor unit fan control in cooling operation 114
- 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 114
- Special control 115
- Startup control 115
- Startup control in cooling operation 115
- 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 115
- 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 116
- 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 rxq14 18pa 116
- Oil return operation 116
- Oil return operation in cooling operation 116
- 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 116
- Actuators are based on rxq14 18pa 117
- 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 117
- Pump down residual operation 117
- Pump down residual operation in cooling operation 117
- Actuators are based on rxq14 18pa 118
- Crankcase heater control 118
- 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 118
- Restart standby 118
- Standby 118
- Used to forcedly stop the compressor for a period of 3 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 118
- Actuators are based on rxq14 18pa 119
- 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 119
- Stop due to malfunction 119
- Stopping operation 119
- This mode is used to define actuator operations when the system stops 119
- When system is in stop mode normal operation stop 119
- In heating operation the system operates with following mode 120
- Stopping operation of slave units during master unit is in operation with multi outdoor unit system 120
- 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 same as that of normal operation stop 120
- High pressure protection control 121
- In cooling operation 121
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 121
- Protection control 121
- 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 121
- Hot gas svp off 122
- Hot gas svp on 122
- In cooling operation 122
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 122
- Low pressure protection control 122
- Master unit 52 hz off off 122
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 122
- Discharge pipe protection control 123
- Each compressor performs the discharge pipe temperature protection control individually in the following sequence 123
- Inv compressor 123
- Std compressor 123
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 123
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 124
- Inverter current 14 a y1 inv upper limit frequency max 124
- 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 124
- Inverter fin temperature control 124
- Inverter overcurrent protection control 124
- Inverter protection control 124
- Nomal operation 124
- 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 125
- Injection control only for rxq5pa 125
- Std compressor overload protection 125
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 125
- Other control 126
- Outdoor unit rotation 126
- Caution in order to disable the compressor operation due to a failure or else be sure to do so in emergency operation mode never attempt to disconnect power supply wires from magnetic contactors or else doing so will operate compressors in combination that disables oil equalization between the compressors thus resulting in malfunctions of other normal compressors 127
- Emergency operation 127
- Restrictions for emergency operation 127
- In the case of 1 outdoor unit system rxq8pa to 18pa 128
- In the case of multi outdoor unit system rxq20pa to 54pa 128
- Note in order to forcedly clear the automatic backup operation reset the power supply with the outdoor unit in the stopped state 129
- 777777 131
- 777777 77 131
- 7777777 7777 131
- Blink h1 131
- Cancel to set the std 2 compressor from operation prohibition mode set no 19 of setting mode 2 to std2 operation prohibition rxq14pa 16pa 131
- Led display 131
- Demand operation 133
- 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 133
- Drain pump control 134
- Outline of control indoor unit 134
- Louver control for preventing ceiling dirt 136
- Thermostat sensor in remote controller 137
- 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 138
- Function 127 138
- 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 humidity while in thermostat off mode 138
- Si34 804 outline of control indoor unit 138
- Thermostat control in dry operation 138
- Thermostat control while in normal operation 138
- 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 or of 1 c from that while in heating operation 138
- While in a single remote controller group control the body thermostat is only used fro this control furthermore while in heating operation cassette mounted indoor units conduct the thermostat control by a value compensated by 2 c for the value detected with the body thermostat 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 138
- While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 138
- Electronic expansion valve control 139
- Freeze prevention 139
- 1 l or ll only on fxfq models 140
- List of swing flap operations 140
- Swing flaps operate as shown in table below 140
- Control of outdoor air processing unit unique control for outdoor air processing unit 141
- Details outdoor air processing unit 141
- Objective to select cooling heating or fan operation mode according to the suction air outdoor air temperature 141
- Selection of operation mode by suction air thermostat 141
- Discharge air 142
- Discharge air temperature control 142
- Ev ev ev ev ev ev 142
- Is ev possible to close 142
- Is ev possible to open 142
- Refrigerant 142
- Sh t3 t2 142
- Temp setting 142
- Low outdoor air temperature protection control 143
- Outdoor unit pc board layout 52 3 field setting 53 144
- Part 5 test operation 144
- Test operation 34 144
- Below figure shows the installation process install in the order of the steps shown 145
- Installation process 145
- Test operation 145
- Check work prior to turn power supply on 146
- Follow the following procedure to conduct the initial test operation after installation 146
- Procedure and outline 146
- Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 147
- Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate 147
- Check for normal operation 147
- Check the led display of the outdoor unit pc board 147
- Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 147
- Conduct check operations 147
- Make field settings if needed for the setting procedure refer to information in 3 field setting from outdoor unit on page 170 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 147
- Make field settings with outdoor unit pc board 147
- Test operation 147
- Test operation si34 804 147
- 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 147
- The master unit is the outdoor unit to which the transmission wiring for the indoor units is conncted the other outdoor units are slave units 147
- Turn outdoor unit and indoor unit power on 147
- Turn power on 147
- 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 148
- Air tight test and vacuum drying 148
- Always use nitrogen gas for the airtightness test 148
- Preparations 148
- Referring to figure 28 connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit the refrigerant tank and the charge hose connection to refrigerant charge port or the valve a c in figure 28 are needed in 1 additional refrigerant charge and check operation 148
- See shutoff valve operation procedure in 1 before working for details on handling the shutoff valve refer to page 139 148
- The airtightness test and vacuum drying should be done using the liquid side and gas side shutoff valve service ports see the r 410a label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right 148
- The refrigerant charge port is connected to unit pipe when shipped the unit contains refrigerant so use caution when attaching the charge hose 148
- The shutoff valve and valve a c in figure 28 should be open or closed as shown in the table below 148
- Additional refrigerant charge and check operation 149
- Air tight test and vacuum drying method 149
- Before working 149
- Note total amount of refrigerant should be 100 kg or less 149
- After tightening the cap make sure no refrigerant gas is leaking 150
- Be sure to use the correct tools the shutoff valve is not a back seat type if forced it to open it might break the valve body 150
- Do not open the shutoff valve until 1 check work prior to turn power supply on in page 135 are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation 150
- Shutoff valve operation procedure 150
- When operating the shutoff valve follow the procedure instructed below 150
- When using a service port use the charge hose 150
- 3 3 3 3 3 151
- 3 3 4 3 4 151
- 3 4 3 3 3 151
- 4 3 3 3 3 151
- 5 3 5 5 3 151
- How to check how many units are connected 151
- It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the pc board a1p of outdoor unit in case of multi system master unit follow the procedure below to check how many indoor or outdoor units are turned on 151
- Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 default 151
- Procedure of adding refrigerant charging and check operation 152
- Cooling mode 153
- Fig 31 153
- Fig 32 153
- Fig 33 153
- Fig 34 153
- Heating mode 153
- If the additional charging amount was charged fully close the valve c and go to step 6 if the additional charging amount was not charged fully close the valve c and go to step 5 5 perform the refrigerant charging following automatic refrigerant charging operation procedure as shown below and charge the remaining refrigerant of the additional charging amount 153
- Note for performing the automatic refrigerant charging operation the push button on the pc board a1 of outdoor unit are used see figure 33 and the refrigerant are charged from the refrigerant charge port via the valve a see figure 32 for operating the push button and opening or closing the valves follow the procedure during automatic refrigerant charging operation the system will select charging mode cooling mode or heating mode by the temperature condition as follows 153
- Open the valve c see the figure 31 the valve a b and the liquid pipe suction gas pipe shutoff valves must be left closed and charge the refrigerant of the additional charging amount from the liquid side shutout valve service port 153
- Outdoor temp 0 c db 43 c db indoor temp 10 c db 32 c db less than above range 153
- Test operation 153
- Test operation si34 804 153
- When charging in cooling mode the system will stop operation when the required amount of refrigerant is charged during charging in heating mode a person must manually close valve a and stop operation beforehand check the remaining refrigerant that is needed to charge based on the additional charging amount in step 2 and the charged amount in step 3 the refrigerant will be charged about 22kg in one hour at outdoor temp 30 c db about 6kg at outdoor temp 0 c db if you need to speed up in case of multi system connect the refrigerant tanks to each outdoor unit as shown in the figure 34 during automatic refrigerant charging operation you can stop the operation forcedly by pushing mode button bs1 153
- 4 push the test button bs4 once the led displays will change as below 154
- 5 hold the test button bs4 down for 5 seconds or more the led displays will change as below and fan of outdoor unit will start rotation 154
- 6 when the compressor start working and the led displays change any state in below 3 go to in case of cooling mode or in case of heating mode in accordance with the led displays 154
- 9 when the compressor stop working the fan may continue rotation close the valve a immediately 8 and check the led displays are as below and the remote controller display shows p9 code 154
- After checking push the mode button bs1 once and the charging is complete 154
- Automatic refrigerant charging operation procedure 154
- Beware the fan running when open the front panel the fan may continue rotation after the system stop the operation 154
- Blinking 154
- In case of cooling mode 7 push the test button bs4 once within 5 minutes after procedure 5 4 and close the all front panels 5 after that open the valve a immediately see figure 32 6 and watch the remote controller display of indoor unit 8 if the remote controller display shows pe code 7 ready to close the valve a and go to procedure 9 if the remote controller display shows other code close the valve a immediately and refer to remote controller cooling mode malfunction code 154
- Note the marks of led mean as follows 154
- Off on or brinking 1 open the liquid pipe suction gas pipe shutoff valves the valve a c must be closed see figure 32 2 close the el compo box 1 lid and all front panel except on the el compo box 1 side 1 and 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 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 page 147 3 check the led and push the mode button bs1 once if the led displays is not as below 154
- 1 open the liquid and gas side shutoff valves the valve a c must be closed the valve a c means the valves in the figure 34 display of normal system 156
- 2 if necessary set the field setting by using the dip switch on the outdoor unit pc board a1p for how to set see 1 onsite settings with the power off 3 close the el compo box lid and all front panel except on the side of the el compo box 1 and 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 led displays as shown in the table display of normal system and the system is normal state if h2p is blinking check the malfunction code in the remote controller and correct the malfunction in accordance with remote controller display malfunction code in page 147 1 lead the refrigerant charge hose etc from the pipe intake all front panels must be closed at the procedure 9 2 if you perform the refrigerant charging operation within the refrigerant system that have the power off unit the operation cannot finish properly for confirming the number of the outdoor and indoor units with the power on see how to chec 156
- Refrigerant charging operation procedure 156
- Remote controller heating mode malfunction code 156
- 1 make the onsite setting as needed using the dip switches on the outdoor unit pc board a1p with the power off see 1 onsite settings with the power off 2 close the el compo box lid and all front panels except as the side of the el compo box and turn on the power to the outdoor unit and all connected indoor units be sure to turn the power on at least 6 hours before operation in order to have power running to the crank case heater 3 check the led display on the outdoor unit pc board a1p is as shown in the table below and transmission is normal 157
- 4 make the onsite settings as needed using the push button bs1 bs5 on the outdoor unit pc board a1p with the power on see 1 onsite settings with the power on 5 perform the check operation following the check operation method of the service precautions label on the el compo box lid the system operation for about 40 minutes and automatically stops the check operation if the malfunction code is not displayed in the remote controller after the system stop check operation is completed normal operation will be possible after 5 minutes if the malfunction code is displayed in the remote controller correct the malfunction following remote controller displays malfunction code and perform the check operation again 157
- Check of miswiring 157
- Check of refrigerant overcharge it takes about 40 minutes to complete the check operation 157
- Check of shutoff valve opening 157
- Check operation procedure 157
- How to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 157
- Judgment of piping length 157
- Note for check operation the following work will be performed 157
- If any malfunction codes other than the above are displayed check the service manual for how to respond 158
- Remote controller displays malfunction code 158
- Onsite settings 159
- Onsite settings with the power off 159
- Onsite settings with the power on 159
- Before test run 160
- Test run 160
- Checks after test run 161
- 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 162
- 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 162
- Operation when power is turned on 162
- 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 162
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 162
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 162
- When turning on power first time 162
- When turning on power the second time and subsequent 162
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 163
- 2 set mode display led leds display mode according to the setting 163
- 3 mode setting switch used to change mode 163
- 4 local setting switch used to make field settings 163
- Outdoor unit pc board 163
- Outdoor unit pc board layout 163
- Field setting 164
- Field setting from remote controller 164
- Wireless remote controller indoor unit 165
- Simplified remote controller 166
- Field setting si34 804 167
- 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 7 the fxmq50 63 80 100 125pve cannot be set to 30pa the fxmq40pve cannot be set to 180 or 200pa 167
- Setting contents and code no vrv indoor unit 167
- Test operation 167
- Applicable range of field setting 168
- Refer to 3 outdoor air processing unit field setting remote controller on p 65 168
- Si34 804 field setting 168
- Static pressure selection 168
- Test operation 157 168
- 1 filter sign setting 169
- 2 ultra long life filter sign setting 169
- 3 selection of thermistor 169
- 4 filter cleaning displayed or not displayed 169
- Detailed explanation of setting modes 169
- If switching the filter sign on time set as given in the table below set time 169
- Select the thermistor to control room temperature 169
- Setting table 169
- 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 169
- When a ultra long life filter is installed the filter sign timer setting must be changed 169
- Whether or not to display filter cleaning after operation of certain duration can be selected 169
- 5 airflow adjustment auto 170
- 6 optional output switching 170
- 7 external on off input 170
- External static pressure settings make settings in either method a or method b as explained below a use the airflow auto adjustment function to make settings airflow auto adjustment the volume of blow off air is automatically adjusted to the rated quantity b select external static pressure with remote controller check that 01 off is set for the second code no in mode no 21 for airflow adjustment on an indoor unit basis in table 4 the second code no is set to 01 off at factory set change the second code no as shown in table according to the external static pressure of the duct to be connected 170
- Setting table 170
- 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 170
- 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 170
- 10 setting of operation mode to auto 171
- 11 auto restart after power failure reset 171
- 12 airflow when cooling thermostat is off this is used to set airflow to ll airflow when cooling thermostat is off 171
- 8 thermostat switching 171
- 9 airflow setting when heating thermostat is off 171
- 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 2 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 171
- Differential value during thermostat on off control can be changed for details refer to 6 thermostat control while in normal operation on page 127 171
- 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 171
- 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 171
- The automatic operation mode setting is made by the use of the operation mode selector button 171
- This setting is used to set airflow when heating thermostat is off 171
- This setting makes it possible to change differential values for mode selection while in automatic operation mode 171
- When thermostat off airflow 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 171
- 1 mode no setting is done in a batch for the group to make or confirm settings for an individual unit set the internal mode number in parentheses 2 the figure of the ceiling height is for the all round outlet for the settings for four direction part of corner closed off three direction and two direction outlets see the installation manual and technical guide supplied with the separately sold closure material kit 172
- 13 setting of normal airflow 172
- In the case of fxaq 172
- In the case of fxfq100 125 172
- In the case of fxfq100 125 all round outlet 172
- In the case of fxfq25 80 172
- In the case of fxfq25 80 all round outlet 172
- In the case of fxhq 172
- Make the following setting according to the ceiling height the setting position no is set to 01 at the factory 172
- Way 3 way 2 way outlets 172
- 14 airflow direction setting 173
- 15 operation of downward flow flap yes no 173
- 16 setting of airflow direction adjustment range 173
- 17 setting of the static pressure selection 173
- In the case of fxdq20 32pb fxdq40 63nb 173
- In the case of fxuq71 125 173
- Make the following airflow direction setting according to the respective purpose 173
- 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 173
- Set the airflow 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 01 173
- Setting table 173
- Some indoor unit models are not equipped with draft prevention upward function 173
- 18 external static pressure settings for fxmq p model 174
- 19 humidification when heating thermostat is off 174
- 20 setting of direct duct connection 174
- 21 interlocked operation between humidifier and drain pump 174
- 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 174
- The second code no is set to 07 an external static pressure of 100 pa at factory set 1 the fxmq50 63 80 100 125pve cannot be set to 30 pa 2 the fxmq40pve cannot be set to 180 or 200 pa 174
- This is used to interlock the humidifier with the drain pump when water is drained out of the unit this setting is unnecessary 174
- This is 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 for the purpose of preventing dust on the air filter from falling off 174
- 22 individual setting of ventilation 175
- This is set to perform individual operation of heat reclaim ventilation using the remote controller central unit when heat reclaim ventilation is built in switch only when heat reclaim ventilation is built in 175
- Note bold face in indicates the default setting 176
- Outdoor air processing unit field setting remote controller 176
- Centralized control group no setting 177
- Brc7c type brc7e type brc4c type 178
- 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 178
- 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 178
- Group no setting example 178
- Si34 804 field setting 178
- Test operation 167 178
- Contents of control modes 179
- Setting of operation control mode from remote controller local setting 179
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 180
- Factory setting 180
- 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 180
- Field setting from outdoor unit 181
- For setting items of 1 refer to detailed information provided on page 182 onward 181
- 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 182 onward 181
- For setting items of 1 refer to detailed information provided on page 182 onward 182
- Caution 183
- Dip switch detail 183
- 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 183
- If the ds1 1 1 4 ds2 2 2 4 setting has not been carried out error code ua are displayed and unit can not be operated 183
- Initial conditions of dip switches 183
- Make the following settings according to models of outdoor units all models are set to off at factory 183
- Refer ds1 1 4 ds2 1 4 setting detail on next page 183
- 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 1 183
- Detail of ds1 1 4 ds2 1 4 setting for overseas general 184
- 7 8 7 7 7 7 186
- A setting mode 1 186
- Procedure for checking check items 186
- Si34 804 field setting 186
- Test operation 175 186
- This mode is used to set and 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 186
- B setting mode 2 187
- 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 191
- 7 7 7 7 7 191
- 7 7 7 7 8 191
- 7 7 7 8 7 191
- 7 7 7 8 8 191
- 7 7 8 7 7 191
- 7 7 8 7 8 191
- 7 7 8 8 7 191
- 7 7 8 8 8 191
- 7 8 7 7 7 191
- 7 8 7 7 8 191
- 7 8 7 8 7 191
- 7 8 7 8 8 191
- 7 8 8 7 7 191
- 7 8 8 7 8 191
- 7 8 8 8 7 191
- 7 8 8 8 8 191
- 8 7 7 7 7 191
- 8 7 8 7 7 191
- 8 7 8 7 8 191
- 8 7 8 8 7 191
- 8 8 7 7 8 191
- C monitor mode 191
- Field setting si34 804 191
- Push the mode bs1 button and returns to setting mode 1 191
- Push the return bs3 button and switches to the initial status of monitor mode 191
- Push the return bs3 button to display different data of set items 191
- Push the set bs2 button and set the led display to a setting item 191
- Test operation 191
- The numbers in the no column represent the number of times to press the set bs2 button 191
- To enter the monitor mode push the mode bs1 button when in setting mode 1 191
- 7 7 7 7 7 192
- 7 7 7 7 8 192
- 7 7 7 7 9 192
- 7 7 7 8 7 192
- 7 7 7 9 7 192
- 7 8 7 7 7 192
- Data such as addresses and number of units is expressed as binary numbers the two ways of expressing are as follows 192
- See the preceding page for a list of data etc for no 0 25 192
- Setting item 0 display contents of number of units for various settings 192
- The address for no 12 is 0101 the address for no 13 is 0110 and the combination of the two is 01010110 binary number which translates to 64 16 4 2 86 base 10 number in other words the number of terminal block is 86 192
- The address is 010110 binary number which translates to 16 4 2 22 base 10 number in other words the address is 22 192
- The no 1 cool heat unified address is expressed as a binary number consisting of the lower 6 digits 0 63 192
- The number of terminal blocks for no 12 and 13 is expressed as an 8 digit binary number which is the combination of four upper and four lower digits for no 12 and 13 respectively 0 128 in 192
- Setting of low noise operation and demand operation 193
- Image of operation in the case of a 194
- Image of operation in the case of a and b 194
- Image of operation in the case of b 194
- 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 195
- 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 195
- 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 195
- Image of operation in the case of a 196
- Image of operation in the case of a and b 196
- Image of operation in the case of b 196
- Si34 804 field setting 196
- Test operation 185 196
- Setting of refrigerant recovery mode 199
- Check operation detail 200
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 200
- Operating procedure 200
- Press mode button bs1 once and reset setting mode 2 200
- Setting of vacuuming mode 200
- Use the vacuum pump to perform vacuuming operation 200
- 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 200
- Part 6 troubleshooting 202
- Symptom based troubleshooting 94 2 troubleshooting by remote controller 97 202
- Troubleshooting by indication on the remote controller 12 202
- Troubleshooting op central remote controller 97 203
- Troubleshooting op unified on off controller 05 204
- Symptom based troubleshooting 205
- Inspection mode 208
- Local setting mode service mode 208
- Normal mode 208
- Test operation mode 208
- The following modes can be selected by using the inspection test operation button on the remote control 208
- The inspection test button 208
- Troubleshooting by remote controller 208
- Self diagnosis by wired remote controller 209
- Self diagnosis by wireless remote controller 210
- The lower digit of the code changes as shown below when the up and down buttons are pressed 211
- Operation of the remote controller s inspection test operation button 213
- Troubleshooting 213
- Troubleshooting by remote controller si34 804 213
- Remote controller service mode 214
- Remote controller self diagnosis function 216
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 218
- Detail description on next page 219
- Malfunction code indication by outdoor unit pc board 219
- Push the mode bs1 button and returns to setting mode 1 219
- Push the return bs3 button and switches to the initial status of monitor mode 219
- Push the return bs3 button once to display first digit of malfunction code 219
- Push the set bs2 button and set the led display to a setting item 219
- Push the set bs2 button once to display malfunction location 219
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 219
- Push the set bs2 button once to display second digit of malfunction code 219
- Refer to p 80 for monitor mode 219
- To enter the monitor mode push the mode bs1 button when in setting mode 1 219
- Troubleshooting 219
- Troubleshooting by remote controller si34 804 219
- Si34 804 troubleshooting by remote controller 220
- Troubleshooting 209 220
- Detail description on next page 221
- Push the mode bs1 button and returns to setting mode 1 221
- Push the return bs3 button and switches to the initial status of monitor mode 221
- Push the return bs3 button once to display first digit of malfunction code 221
- Push the set bs2 button and set the led display to a setting item 221
- Push the set bs2 button once to display malfunction location 221
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 221
- Push the set bs2 button once to display second digit of malfunction code 221
- Refer to p 80 for monitor mode 221
- To enter the monitor mode push the mode bs1 button when in setting mode 1 221
- Troubleshooting 221
- Troubleshooting by remote controller si34 804 221
- Si34 804 troubleshooting by remote controller 222
- Troubleshooting 211 222
- Actuation of external protection device 223
- Applicable models all indoor unit models 223
- Defect of indoor unit pc board 223
- Detect open or short circuit between external input terminals in indoor unit 223
- Improper field set 223
- Indoor unit error of external protection device 223
- Malfunction decision conditions 223
- Method of malfunction detection 223
- Remote controller display 223
- Supposed causes 223
- Troubleshooting 223
- Troubleshooting by indication on the remote controller 223
- When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 223
- Indoor unit pc board defect 224
- Indoor unit malfunction of drain level control system s1l 225
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 226
- Si34 804 troubleshooting by indication on the remote controller 226
- Troubleshooting 226
- Troubleshooting 215 226
- Applicable models all indoor units except fxmq p 227
- Detection by failure of signal for detecting number of turns to come from the fan motor 227
- Disconnected or faulty wiring between fan motor and pc board 227
- Fan motor lock 227
- Indoor unit fan motor m1f lock overload 227
- Malfunction decision conditions 227
- Method of malfunction detection 227
- Remote controller display 227
- Supposed causes 227
- Troubleshooting 227
- When number of turns can t be detected even when output voltage to the fan is maximum 227
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 229
- Troubleshooting 229
- Troubleshooting by indication on the remote controller si34 804 229
- Si34 804 troubleshooting by indication on the remote controller 230
- Troubleshooting 219 230
- Indoor unit malfunction of swing flap motor m1s 231
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 232
- Si34 804 troubleshooting by indication on the remote controller 232
- Troubleshooting 232
- Troubleshooting 221 232
- Abnormal power supply voltage 233
- Applicable models all indoor unit models 234
- Defect of connecting cable 234
- Defect of indoor unit pc board 234
- Indoor unit malfunction of moving part of electronic expansion valve y1e 234
- Malfunction decision conditions 234
- Malfunction of moving part of electronic expansion valve 234
- Method of malfunction detection 234
- Remote controller display 234
- Supposed causes 234
- Troubleshooting 234
- Use a microcomputer to check the electronic expansion valve for coil conditions 234
- When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer 234
- 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 235
- Continuity no continuity 235
- Normal 235
- Indoor unit drain level above limit 236
- Indoor unit malfunction of capacity determination device 237
- Indoor unit failure of transmission between indoor unit pc board and fan pc board 238
- After confirmation turn off the power take off the short circuit and connect x70a back to original condition 239
- Determination 01 normal other than 01 transmission defect on indoor pc board 239
- Method to check transmission part of indoor pc board turn off the power and remove the connecter x70a of indoor pc board a1p short circuit x70a after turning on the power check below numbers under local setting remote control confirmation setting position no at the condition of setting switch no 21 on mode no 41 239
- Pull out and insert the connecter once and check it is absolutely connected 239
- Troubleshooting 239
- Troubleshooting by indication on the remote controller si34 804 239
- Applicable models all indoor unit models 240
- Defect of indoor unit pc board 240
- Defect of thermistor r2t for liquid pipe 240
- Indoor unit malfunction of thermistor r2t for heat exchanger 240
- Malfunction decision conditions 240
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 240
- Method of malfunction detection 240
- Refer to thermistor resistance temperature characteristics table on p 65 240
- Remote controller display 240
- Supposed causes 240
- Troubleshooting 240
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 240
- Applicable models all indoor unit models 241
- Defect of indoor unit pc board 241
- Defect of indoor unit thermistor r3t for gas pipe 241
- Indoor unit malfunction of thermistor r3t for gas pipes 241
- Malfunction decision conditions 241
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 241
- Method of malfunction detection 241
- Refer to thermistor resistance temperature characteristics table on p 65 241
- Remote controller display 241
- Supposed causes 241
- Troubleshooting 241
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 241
- Indoor unit failure of combination between indoor unit pc board and fan pc board 242
- Applicable models aii indoor unit models 243
- Defect of indoor unit pc board 243
- Defect of indoor unit thermistor r1t for air inlet 243
- Indoor unit malfunction of thermistor r1t for suction air 243
- Malfunction decision conditions 243
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 243
- Method of malfunction detection 243
- Refer to thermistor resistance temperature characteristics table on p 65 243
- Remote controller display 243
- Supposed causes 243
- Troubleshooting 243
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 243
- Applicable models fxfq 244
- Disconnection 244
- Even if a malfunction occurs operation still continues malfunction is detected according to the moisture output voltage detected by the moisture sensor 244
- Faulty sensor 244
- Indoor unit malfunction of humidity sensor system 244
- Malfunction decision conditions 244
- Method of malfunction detection 244
- Remote controller display 244
- Supposed causes 244
- Troubleshooting 244
- When the moisture sensor is disconnected or short circuited 244
- Indoor unit malfunction of thermostat sensor in remote controller 245
- Outdoor unit pc board defect 246
- Outdoor unit actuation of high pressure switch 247
- 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 page 367 2 make a comparison between the high pressure value checked with the service checker and the voltage of the pressure sensor see 1 3 make measurement of voltage of the pressure sensor 248
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 248
- Si34 804 troubleshooting by indication on the remote controller 248
- Troubleshooting 248
- Troubleshooting 237 248
- Outdoor unit actuation of low pressure sensor 249
- 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 page 367 2 make a comparison between the low pressure value checked with the service checker and the voltage of the pressure sensor see 1 3 make measurement of voltage of the pressure sensor 250
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 250
- Si34 804 troubleshooting by indication on the remote controller 250
- Troubleshooting 250
- Troubleshooting 239 250
- Outdoor unit inverter compressor motor lock 251
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 252
- Si34 804 troubleshooting by indication on the remote controller 252
- Troubleshooting 252
- Troubleshooting 241 252
- Abnormal case 253
- Applicable models rxq5pa 54pa 253
- Closed stop value 253
- Detects the overcurrent with current sensor ct 253
- Faulty compressor 253
- Faulty current sensor a6p a7p 253
- Faulty magnetic switch 253
- Improper power voltage 253
- Malfunction decision conditions 253
- Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 253
- Method of malfunction detection 253
- Obstacles at the air outlet 253
- Outdoor unit std compressor motor overcurrent lock 253
- Remote controller display 253
- Supposed causes 253
- The current sensor value is 0 during std compressor operation 253
- The current sensor value is more than 15 a during std compressor stop 253
- Troubleshooting 253
- V class unit 15 a 253
- V class unit 28 a 253
- Outdoor unit malfunction of outdoor unit fan motor 254
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 255
- Troubleshooting 255
- Troubleshooting by indication on the remote controller si34 804 255
- Check 1 check 2 256
- Note refer to and on p 11 256
- Si34 804 troubleshooting by indication on the remote controller 256
- Troubleshooting 256
- Troubleshooting 245 256
- Outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 257
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 258
- Si34 804 troubleshooting by indication on the remote controller 258
- Troubleshooting 258
- Troubleshooting 247 258
- Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor 259
- Applicable models rxq5pa 54pa 259
- Faulty connection of discharge pipe temperature sensor 259
- Faulty discharge pipe temperature sensor 259
- Faulty outdoor unit pc board 259
- Malfunction decision conditions 259
- Method of malfunction detection 259
- Outdoor unit abnormal discharge pipe temperature 259
- Refer to thermistor resistance temperature characteristics table on p 66 259
- Remote controller display 259
- Supposed causes 259
- Troubleshooting 259
- When the discharge pipe temperature rises to an abnormally high level when the discharge pipe temperature rises suddenly 259
- Outdoor unit refrigerant overcharged 260
- Abnormal fan motor signal circuit malfunction 261
- Applicable models rxq5pa 54pa 261
- Broken short or disconnection connector of fan motor connection cable 261
- Detection of abnormal signal from fan motor 261
- Disconnect connector x2a and measure the following resistance 261
- Fan inverter pc board malfunction 261
- In case of detection of abnormal signal at starting fan motor 261
- Malfunction decision conditions 261
- Method of malfunction detection 261
- Outdoor unit abnormal outdoor fan motor signal 261
- Remote controller display 261
- Supposed causes 261
- Troubleshooting 261
- Applicable models rxq5pa 54pa 262
- Defect of outdoor unit pc board a1p 262
- Defect of thermistor r1t for outdoor air 262
- Malfunction decision conditions 262
- Malfunction is detected from the temperature detected by the outdoor air thermistor 262
- Method of malfunction detection 262
- Outdoor unit malfunction of thermistor r1t for outdoor air 262
- Refer to thermistor resistance temperature characteristics table on p 65 262
- Remote controller display 262
- Supposed causes 262
- Troubleshooting 262
- When the outside air temperature thermistor has short circuit or open circuit 262
- Applicable models rxq5pa 54pa 263
- Faulty current sensor a6p a7p 263
- Faulty outdoor unit pc board 263
- Malfunction decision conditions 263
- Malfunction is detected according to the current value detected by current sensor 263
- Method of malfunction detection 263
- Outdoor unit current sensor malfunction 263
- Remote controller display 263
- Supposed causes 263
- Troubleshooting 263
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 263
- Applicable models rxq5pa 54pa 264
- Defect of outdoor unit pc board a1p 264
- Defect of thermistor connection 264
- Defect of thermistor r31t r32t or r33t for outdoor unit discharge pipe 264
- Malfunction decision conditions 264
- Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 264
- Method of malfunction detection 264
- Note 5 hp class r3t 8 12 hp class r31t r32t 14 16hp class r31t r32t and r33t 264
- Outdoor unit malfunction of discharge pipe thermistor r3 r31 33t 264
- Refer to thermistor resistance temperature characteristics table on p 66 264
- Remote controller display 264
- Supposed causes 264
- The alarm indicator is displayed when the fan is being used also 264
- Troubleshooting 264
- When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 264
- Outdoor unit malfunction of thermistor r2t r7t for suction pipe 265
- Applicable models rxq5pa 54pa 266
- Defect of outdoor unit pc board a1p 266
- Defect of thermistor connection 266
- Defect of thermistor r4t for outdoor unit coil 266
- Malfunction decision conditions 266
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 266
- Method of malfunction detection 266
- Outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger 266
- Refer to thermistor resistance temperature characteristics table on p 65 266
- Remote controller display 266
- Supposed causes 266
- Troubleshooting 266
- When a short circuit or an open circuit in the heat exchange thermistor is detected 266
- Applicable models rxq5pa 54pa 267
- Defect of thermistor connection 267
- Faulty liquid pipe thermistor r6t 267
- Faulty outdoor unit pc board 267
- Malfunction decision conditions 267
- Malfunction is detected according to the temperature detected by liquid pipe thermistor 267
- Method of malfunction detection 267
- Outdoor unit malfunction of liquid pipe thermistor r6t 267
- Refer to thermistor resistance temperature characteristics table on p 65 267
- Remote controller display 267
- Supposed causes 267
- Troubleshooting 267
- When the liquid pipe thermistor is short circuited or open 267
- Applicable models rxq5pa 54pa 268
- Faulty outdoor unit pc board 268
- Faulty subcooling heat exchanger gas pipe thermistor r5t 268
- Malfunction decision conditions 268
- Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 268
- Method of malfunction detection 268
- Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t 268
- Refer to thermistor resistance temperature characteristics table on p 65 268
- Remote controller display 268
- Supposed causes 268
- Troubleshooting 268
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 268
- Applicable models rxq5pa 54pa 269
- Connection of low pressure sensor with wrong connection 269
- Defect of high pressure sensor system 269
- Defect of outdoor unit pc board 269
- Malfunction decision conditions 269
- Malfunction is detected from the pressure detected by the high pressure sensor 269
- Method of malfunction detection 269
- Outdoor unit malfunction of high pressure sensor 269
- Refer to pressure sensor pressure voltage characteristics table on p 67 269
- Remote controller display 269
- Supposed causes 269
- Troubleshooting 269
- Voltage measurement point 269
- When the high pressure sensor is short circuit or open circuit 269
- Outdoor unit malfunction of low pressure sensor 270
- Actuation of fin thermal actuates above 93 c 271
- Applicable models rxq5pa 54pa 271
- Defect of fin thermistor 271
- Defect of inverter pc board 271
- Fin temperature is detected by the thermistor of the radiation fin 271
- Malfunction decision conditions 271
- Method of malfunction detection 271
- Outdoor unit malfunction of inverter radiating fin temperature rise 271
- Remote controller display 271
- Supposed causes 271
- Troubleshooting 271
- When the temperature of the inverter radiation fin increases above 93 c 271
- Inverter pc board for compressor 272
- Refer to thermistor resistance temperature characteristics table on p 65 272
- Outdoor unit inverter compressor abnormal 273
- Si34 804 troubleshooting by indication on the remote controller 274
- Troubleshooting 274
- Troubleshooting 263 274
- Applicable models rxq5pa 54pa 275
- Compressor coil disconnected 275
- Compressor overload 275
- Defect of inverter pc board 275
- Faulty compressor 275
- Malfunction decision conditions 275
- Malfunction is detected by current flowing in the power transistor 275
- Method of malfunction detection 275
- Outdoor unit inverter current abnormal 275
- Remote controller display 275
- Supposed causes 275
- Troubleshooting output current check 275
- When overload in the compressor is detected inverter secondary current 16 a y1 275
- Si34 804 troubleshooting by indication on the remote controller 276
- Troubleshooting 276
- Troubleshooting 265 276
- Applicable models rxq5pa 54pa 277
- Defect of compressor 277
- Defect of inverter pc board 277
- Failure to open the stop valve 277
- Faulty compressor connection 277
- Malfunction decision conditions 277
- Method of malfunction detection 277
- Outdoor unit inverter start up error 277
- Pressure differential start 277
- Remote controller display 277
- Supposed causes 277
- This malfunction code will be output if overcurrent occurs at the time of startup 277
- Troubleshooting 277
- When the startup control is failed when an overcurrent is passed to the inverter due to the malfunction of a compressor or electrical system 277
- Si34 804 troubleshooting by indication on the remote controller 278
- Troubleshooting 278
- Troubleshooting 267 278
- Outdoor unit malfunction of transmission between inverter and control pc board 279
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 280
- Si34 804 troubleshooting by indication on the remote controller 280
- Troubleshooting 280
- Troubleshooting 269 280
- Troubleshooting 281
- Troubleshooting by indication on the remote controller si34 804 281
- Applicable models rxq5pa 54pa 282
- Defect of inverter pc board 282
- Defect of k2 relay in inverter pc board 282
- Defect of main circuit capacitor 282
- Imbalance in supply voltage is detected in pc board imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter consequently the increased ripple is detected 282
- Improper main circuit wiring 282
- Malfunction decision conditions 282
- Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button when the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minutes 282
- Method of malfunction detection 282
- Open phase 282
- Outdoor unit inverter over ripple protection 282
- Remote controller display 282
- Supposed causes 282
- Troubleshooting 282
- Voltage imbalance between phases 282
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 282
- Applicable models rxq5pa 54pa 283
- Defect of inverter pc board 283
- Defect of radiator fin temperature sensor 283
- Malfunction decision conditions 283
- Malfunction is not decided while the unit operation is continued p4 will be displayed by pressing the inspection button 283
- Method of malfunction detection 283
- Outdoor unit malfunction of inverter radiating fin temperature rise sensor 283
- Remote controller display 283
- Resistance of radiation fin thermistor is detected when the compressor is not operating 283
- Supposed causes 283
- Troubleshooting 283
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 283
- Inverter pc board for compressor 284
- Refer to thermistor resistance temperature characteristics table on p 65 284
- Applicable models rxq5pa 54pa 285
- Faulty or no field setting after replacing main pc board 285
- Malfunction decision conditions 285
- Method of malfunction detection 285
- Mismatching of type of pc board 285
- Outdoor unit faulty field setting after replacing main pc board or faulty combination of pc board 285
- Remote controller display 285
- Supposed causes 285
- The faulty or no field setting after replacing pc board or faulty pc board combination is detected through communications with the inverter 285
- Troubleshooting 285
- Whether or not the field setting or the type of the pc board is correct through the communication date is judged 285
- Applicable models rxq5pa 54pa 286
- Defect of outdoor unit pc board a1p 286
- Defect of pressure sensor 286
- Defect of thermistor r7t or r4t 286
- Malfunction decision conditions 286
- Malfunction is not decided while the unit operation is continued 286
- Method of malfunction detection 286
- Microcomputer judge and detect if the system is short of refrigerant 286
- Out of gas or refrigerant system clogging incorrect piping 286
- Outdoor unit low pressure drop due to refrigerant shortage or electronic expansion valve failure 286
- Refer to pressure sensor pressure voltage characteristics table on p 67 286
- Refer to thermistor resistance temperature characteristics table on p 65 286
- Remote controller display 286
- Short of gas malfunction is detected by discharge pipe temperature thermistor 286
- Supposed causes 286
- Troubleshooting 286
- Applicable models rxq5pa 54pa 287
- Defect of outdoor pc board a1p 287
- Malfunction decision conditions 287
- Method of malfunction detection 287
- Power supply open phase 287
- Power supply reverse phase 287
- Remote controller display 287
- Reverse phase open phase 287
- Supposed causes 287
- The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 287
- Troubleshooting 287
- When a significant phase difference is made between phases 287
- Outdoor unit power supply insufficient or instantaneous failure 288
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 289
- Troubleshooting 289
- Troubleshooting by indication on the remote controller si34 804 289
- Si34 804 troubleshooting by indication on the remote controller 290
- Troubleshooting 290
- Troubleshooting 279 290
- Applicable models rxq5pa 54pa 291
- Check operation is executed or not 291
- Check operation is not executed 291
- Malfunction decision conditions 291
- Malfunction is decided when the unit starts operation without check operation 291
- Method of malfunction detection 291
- Outdoor unit check operation not executed 291
- Remote controller display 291
- Supposed causes 291
- Troubleshooting 291
- Malfunction of transmission between indoor units 292
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 293
- Troubleshooting 293
- Troubleshooting by indication on the remote controller si34 804 293
- Applicable models all models of indoor units 294
- Connection of two main remote controllers when using 2 remote controllers 294
- Defect of indoor unit pc board 294
- Defect of remote controller pc board 294
- 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 294
- Indoor unit malfunction of transmission between remote controller and indoor unit 294
- Malfunction decision conditions 294
- Malfunction of indoor unit remote controller transmission 294
- Malfunction of transmission caused by noise 294
- Method of malfunction detection 294
- Normal transmission does not continue for specified period 294
- Remote controller display 294
- Supposed causes 294
- Troubleshooting 294
- Indoor unit malfunction of transmission between outdoor units 295
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 296
- Si34 804 troubleshooting by indication on the remote controller 296
- Troubleshooting 296
- Troubleshooting 285 296
- Applicable models all models of indoor units 297
- Connection between sub remote controllers 297
- Defect of remote controller pc board 297
- 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 297
- Indoor unit malfunction of transmission between main and sub remote controllers 297
- Malfunction decision conditions 297
- Malfunction of transmission between main and sub remote controller 297
- Method of malfunction detection 297
- Normal transmission does not continue for specified period 297
- Remote controller display 297
- Supposed causes 297
- Troubleshooting 297
- Indoor unit malfunction of transmission between indoor and outdoor units in the same system 298
- Improper combination of indoor and outdoor units indoor units and remote controller 299
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 300
- Si34 804 troubleshooting by indication on the remote controller 300
- The number of indoor units that can be connected to a single outdoor unit system depends on the model of outdoor unit 300
- Troubleshooting 300
- Troubleshooting 289 300
- Address duplication of centralized controller 301
- Malfunction of transmission between centralized controller and indoor unit 302
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 303
- Troubleshooting 303
- Troubleshooting by indication on the remote controller si34 804 303
- Si34 804 troubleshooting by indication on the remote controller 304
- Troubleshooting 304
- Troubleshooting 293 304
- Applicable models all models of indoor units rxq5pa 54pa 305
- Defect of indoor unit pc board 305
- Failure to execute check operation 305
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 305
- Malfunction decision conditions 305
- Method of malfunction detection 305
- 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 305
- 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 305
- Remote controller display 305
- Stop valve is left in closed 305
- Supposed causes 305
- System is not set yet 305
- 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 305
- Troubleshooting 305
- Malfunction of system refrigerant system address undefined 306
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 307
- Troubleshooting 307
- Troubleshooting by indication on the remote controller si34 804 307
- Pc board defect 308
- Troubleshooting op central remote controller 308
- Malfunction of transmission between optional controllers for centralized control 309
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 310
- Si34 804 troubleshooting op central remote controller 310
- Troubleshooting 310
- Troubleshooting 299 310
- Improper combination of optional controllers for centralized control 311
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 312
- Si34 804 troubleshooting op central remote controller 312
- Troubleshooting 312
- Troubleshooting 301 312
- Address duplication improper setting 313
- Address duplication of centralized controller 313
- Applicable models central remote controller intelligent touch controller schedule timer 313
- Detect the malfunction according to diii net transmission data 313
- Malfunction decision conditions 313
- Method of malfunction detection 313
- Remote controller display 313
- Supposed causes 313
- Troubleshooting 313
- Two or more units of central remote controllers and intelligent touch controllers are connected and all of them are set to master unit central setting or slave unit central setting 313
- Two units of schedule timers are connected 313
- Master slave unit setting table combination of intelligent touch controller and central remote controller 314
- Master unit central connector setting table 314
- Si34 804 troubleshooting op central remote controller 314
- 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 in 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 314
- Troubleshooting 303 314
- Operation lamp blinks 316
- Troubleshooting op unified on off controller 316
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 317
- Troubleshooting 317
- Troubleshooting op unified on off controller si34 804 317
- Display under centralized control blinks repeats single blink 318
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 319
- Troubleshooting 319
- Troubleshooting op unified on off controller si34 804 319
- Si34 804 troubleshooting op unified on off controller 320
- Troubleshooting 309 320
- Applicable models unified on off controller 321
- Central control address group no is not set for indoor unit 321
- Detect the malfunction according to diii net transmission data 321
- Display under centralized control blinks repeats double blink 321
- Improper control range setting switch 321
- Improper wiring of transmission wiring 321
- Malfunction decision conditions 321
- Method of malfunction detection 321
- Remote controller display 321
- Supposed causes 321
- Troubleshooting 321
- Troubleshooting op unified on off controller si34 804 321
- Under centralized control repeats double blink 321
- When no central control addresses are set to indoor units when no indoor units are connected within the control range 321
- Check 3 323
- Check for causes of rise in high pressure 323
- Referring to the fault tree analysis fta shown below probe the faulty points 323
- Troubleshooting 323
- Troubleshooting op unified on off controller si34 804 323
- Check 4 324
- Check for causes of drop in low pressure 324
- Referring to the fault tree analysis fta shown below probe the faulty points 324
- Si34 804 troubleshooting op unified on off controller 324
- Troubleshooting 313 324
- Example of connection r 410a type 63 7 thermistor resistance temperature characteristics 65 8 pressure sensor 67 9 method of checking the inverter s power transistors and diode modules 68 326
- List of electrical and functional parts 47 326
- Option list 57 326
- Part 7 appendix 326
- Piping diagrams 16 326
- Piping installation point 61 326
- Wiring diagrams for reference 24 326
- Outdoor unit 327
- Piping diagrams 327
- Rxq5pay1 327
- Rxq8pay1 328
- Rxq10pa 12pay1 329
- Rxq14pa 16pa 18pay1 330
- Electronic expansion valve filter filter 331
- Flare connectio 331
- Flare connection 331
- Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 331
- Gas piping connection port 331
- Heat exchanger 331
- Indoor unit 331
- Liquid piping connection port 331
- Φ 15 or less attached piping above φ 19 331
- Electronic expansion valve 332
- Filter filter 332
- Fxmq40p 50p 63p 80p 100p 125pve 332
- Gas side 332
- Indoor heat exchanger 332
- Liquid side 332
- Refrigerant pipe connection port diameters 332
- Fxmq125mf 200mf 250mfv1 333
- Refrigerant pipe connection port diameters 333
- Connection unit 334
- Fxuq bevq 334
- Indoor unit 334
- Appendix 335
- C63 c66 335
- D061668 335
- F1u f2u 335
- Outdoor unit 335
- R50 r59 335
- Resistor current sensor a4p 335
- Rxq5pay1 335
- Wiring diagrams for reference 335
- Wiring diagrams for reference si34 804 335
- X1a x2a 335
- Appendix 325 336
- Rxq8pay1 336
- Si34 804 wiring diagrams for reference 336
- Appendix 337
- Rxq10pay1 337
- Wiring diagrams for reference si34 804 337
- Appendix 327 338
- Rxq12pay1 338
- Si34 804 wiring diagrams for reference 338
- Appendix 339
- D060911a 339
- 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 muli transmission q1 q2 refer to the installation manual 6 how to use bs1 5 and ds1 switch refer to service precaution label on el compo box cover 7 when operating don t shortcircuit the protection device s1ph s3ph 8 colors blk black red red blu blue wht white pnk pink ylw yellow brn brown gry gray grn green org orange 339
- Rxq14pa 16pa 18pay1 339
- Wiring diagrams for reference si34 804 339
- Appendix 329 340
- Field wiring 340
- Rxq5pa 8pa 10pa 12pa 14pa 16pa 18pay1 340
- Si34 804 wiring diagrams for reference 340
- Appendix 341
- Rxq20pa 22pa 24pa 26pa 28pa 30pa 32pay1 341
- Wiring diagrams for reference si34 804 341
- Appendix 331 342
- Rxq34pa 36pa 38pa 40pa 42pa 44pa 46pa 48pa 50pa 52pa 54pay1 342
- Si34 804 wiring diagrams for reference 342
- A1p a2p 343
- A4p a3p 343
- Appendix 343
- C1 f1u 343
- Capacitor 343
- Connector for optional parts 343
- D059890a 343
- Diode bridge 343
- Electronic expansion valve 343
- Ferrite core 343
- Float switch 343
- Fuse f 5a 250v 343
- Fxfq25p 32p 40p 50p 63p 80p 100p 125pve 343
- Indoor unit 343
- Light emitting diode 343
- M1s r1t r2t r3t r4t 343
- Magnetic relay 343
- Noise filter 343
- Notes 1 terminal connector field wiring 2 in case using central remote controller connect it to the unit in accordance with the attached installation manual 3 x24a x33a and x35a are connected when the optional accessories are being used 343
- S1l v1r 343
- Selector switch main sub 343
- Selector switch wireless address set 343
- Service monitor green 343
- Terminal strip 343
- Thermistor air 343
- Thermistor coil liquid 343
- Thermistor ptc 343
- When connecting the input wires from outside forced off or on off control operation can be selected by the remote controller see installation manual for more details 5 confirm the method of setting the selector switch ss1 ss2 by installation manual and engineering data etc 6 symbols shows as follows red red blk black wht white ylw yellow grn green org orange brn brown pnk pink gry gray blu blue 343
- Wiring diagrams for reference si34 804 343
- Fxcq20m 25m 32m 63mve 344
- Fxcq40m 50m 80m 125mve 345
- Fxkq25ma 32ma 40ma 63mave 346
- Appendix 347
- Fxdq20pb 25pb 32pb fxdq40nb 50nb 63nbve with drain pump 347
- Wiring diagrams for reference si34 804 347
- Appendix 337 348
- Fxdq20pb 25pb 32pb fxdq40nb 50nb 63nbvet without drain pump 348
- Si34 804 wiring diagrams for reference 348
- Appendix 349
- D039561b 349
- Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 349
- Hu k1m s1h x3m 349
- Humidistat terminal block e1h wired remote controller thermistor air selector switch main sub adaptor for wiring fuse 5a 250v magnetic relay magnetic relay magnetic relay e1h magnetic relay hu connector for optional parts connector adaptor for wiring connector wiring adaptor for electorical appendices 349
- Indoor unit printed circuit board a1p a2p c1 f1u hap 349
- Kcr kfr khr khur 349
- Kpr m1f m1p q1m 349
- Magnetic relay e1h 349
- Magnetic relay m1f magnetic relay m1p motor indoor fan motor drain pump thermo switch 135 c or 145 c note9 m1f embedded thermistor air thermistor coil float switch transformer 220 240v 22v terminal block power terminal block control electronic expansion valve optional parts electric heater fuse 15a 250v humidifier 349
- Notes 1 terminal block connector terminal 2 field wiring 3 in case using central remote controller connect it to the unit in accordance with the attached instruction manual 4 when connecting the input wires from outside fdrced off or on off control operation can be selected by remote controller in details refer to the installation manual attached the unit 5 in case installing the electric heater execute the additional wiring for heater circuit k1m e1h in this case the main power supply has to be supplied independently 6 in case high or low e s p operation change over the wiring connection from x4a of a2p to x3a or x5a 7 symbols show as follows pnk pink wht white ylw yellow gry gray org orange blu blue blk black red red brn brown grn green 8 use copper conductors only 9 only 80 100 125 type 349
- R1t ss1 349
- S1l t1r x1m x2m y1e 349
- Terminal board capacitor m1f fuse 5a 250v 349
- Wiring diagrams for reference si34 804 349
- X16a x18a 349
- Appendix 339 350
- Capacitor 350
- Connector for wiring 350
- Connector optional accessory 350
- Diode bridge 350
- Electronic expansion valve 350
- F3u f2u 350
- Float switch 350
- Fuse t 3 5a 250v 350
- Fuse t 5a 250v 350
- Fuse t 6 a 250v fuse t 6 a 250v 350
- Fxmq40p 50p 63p 80p 100p 125pve 350
- Indoor unit 350
- Kpr k1r l1r m1f m1p 350
- Magnetic relay 350
- Motor drain pump 350
- Motor fan 350
- Noise filter 350
- Noise filter ferrite core 350
- Notes 1 terminal connector field wiring 2 in case using central remote controller connect it to the unit in accordance with the attached installation manual 3 when connecting the input wires from outside forced off or on off control operation can be selected by remote controller in details refer to the installation manual attached the unit 4 colors blk black red red blu blue wht white pnk pink ylw yellow brn brown gry gray grn green org orange 350
- Power module 350
- Printed circuit board 350
- Printed circuit board capacitor 350
- Printed circuit board fan 350
- R1t ss1 350
- R3t r4t 350
- Reactor 350
- Selector switch main sub 350
- Si34 804 wiring diagrams for reference 350
- Switching power supply a1p a2p resistor current limiting current sensing device 350
- Terminal strip control 350
- Terminal strip power supply 350
- Thermistor air 350
- Thermistor discharge air 350
- Thermistor gas 350
- Thermistor liquid 350
- Thermistor ntc current limiting 350
- V1r v2r x1m 350
- Wired remote controller 350
- Fxmq200ma 250mave 351
- Fxhq32ma 63ma 100mave 352
- Appendix 353
- Fxaq20ma 25ma 32mave 40ma 50ma 63mave 353
- Wiring diagrams for reference si34 804 353
- Fxlq20ma 25ma 32ma 40ma 50ma 63mave fxnq20ma 25ma 32ma 40ma 50ma 63mave 354
- Fxuq71ma 100ma 125mav1 355
- Fxmq125mf 200mf 250mfv1 356
- Bevq71ma 100ma 125mave 357
- List of electrical and functional parts 358
- Outdoor unit 358
- Rxq5pay1 8pay1 358
- Rxq10pay1 12pay1 359
- Appendix 361
- C off 87 c on 361
- Indoor side 361
- Indoor unit 361
- List of electrical and functional parts si34 804 361
- Appendix 351 362
- Only for fxdq20 32pbve with drain pump type 362
- Si34 804 list of electrical and functional parts 362
- Appendix 363
- List of electrical and functional parts si34 804 363
- Appendix 353 364
- K ω 25 c 364
- Si34 804 list of electrical and functional parts 364
- St8602a 6 φ 6 364
- St8605 6 φ 8 364
- Μ f 400v 364
- Appendix 365
- List of electrical and functional parts si34 804 365
- Appendix 355 366
- Si34 804 list of electrical and functional parts 366
- Thermal protector 130 c off 83 c on 366
- Appendix 367
- List of electrical and functional parts si34 804 367
- 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 368
- Appendix 357 368
- Note 1 installation box no is necessary for each adaptor marked 368
- Operation control system optional accessories 368
- Option list 368
- Option list of controllers 368
- Si34 804 option list 368
- 1 interface for use in bacne 369
- 1 optional diii board dam411b51 369
- 2 interface for use in lonwork 369
- 2 optional di board dam412b51 369
- 2 software p p d dcs002c51 369
- 2 web dam004a51 369
- 3 eco dam003a51 369
- 3 web dcs004a51 369
- 4 electrical box with earth terminal 4 blocks kjb411a 369
- 4 optional diii ai unit dam101a51 369
- 5 di unit dec101a51 369
- 6 dio unit dec102a51 369
- Appendix 369
- Basic hardware intelligent touch controller dcs601c51 369
- Basic hardware number of units to be connected 369
- Building management system 369
- Communication line 369
- Contact analog signal 369
- Dms502b51 369
- Dms504b51 369
- Hardware diii net plus adaptor dcs601a52 369
- Intelligent manager iii 369
- Is a registered trade mark of echelon corporation 3 installation box for adaptor must be procured on site 369
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 2 lonwork 369
- Note 1 bacne 369
- Note 1 installation box for adaptor must be obtained locally 2 for residential use only cannot be used with other centralized control equipment 369
- Option 369
- Option list si34 804 369
- Option software 369
- P p d dam002a51 369
- Parallel interface basic unit dpf201a51 369
- System configuration 369
- Temperature measurement units dpf201a52 369
- Temperature setting units dpf201a53 369
- Unification adaptor for computerized control dcs302a52 369
- Units dam602b51 512 units dam602b51x2 768 units dam602b51x3 1024 units dam602b51x4 2 1 369
- Units dam602b52 369
- Appendix 359 370
- Option lists outdoor unit 370
- Rxq20 36pay1 s 370
- Rxq38 54pay1 s 370
- Rxq5 18pay1 s 370
- Si34 804 option list 370
- Appendix 371
- Option list si34 804 371
- Rxq16 18pahy1 s 371
- Rxq24 30pahy1 s 371
- Rxq32 50pahy1 s 371
- Appendix 361 372
- In the case of 2m or less 372
- In the case of 2m or more 372
- Piping installation point 372
- Si34 804 piping installation point 372
- Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope 372
- The projection part between multi connection piping kits 372
- When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit 372
- The example of a wrong pattern 373
- Appendix 363 374
- Example of connection 374
- Example of connection r 410a type 374
- Example refrigerant branch using refnet header 374
- Example refrigerant branch using refnet joint 374
- Example refrigerant branch using refnet joint and refnet header 374
- Pipe size selection 374
- Refrigerant branch kit selection 374
- Si34 804 example of connection r 410a type 374
- Additional refrigerant to be charged r kg r should be rounded off in units of 0 kg 375
- Diameter of above case 375
- How to calculate the additional refrigerant to be charged 375
- Note 1 375
- Note 2 375
- Note 3 375
- Appendix 365 376
- Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 376
- Outdoor unit for fin thermistor r1t 376
- Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 376
- Si34 804 thermistor resistance temperature characteristics 376
- Thermistor resistance temperature characteristics 376
- Appendix 377
- Outdoor unit thermistors for discharge pipe r3t r3 377
- Thermistor resistance temperature characteristics si34 804 377
- Pressure sensor 378
- Method of checking the inverter s power transistors and diode modules 379
- Diode module checking 380
- Power module checking 380
- When using the analog type of multiple tester make measurement in resistance measurement mode in the x1 380
- When using the digital type of multiple tester make measurement in diode check mode 380
- Part 8 382
- Part 8 precautions for new refrigerant r 410a 382
- Precautions for new refrigerant r 410a 382
- Precautions for new refrigerant r 410a 72 382
- About refrigerant r 410a 383
- 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 383
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 383
- Outline 383
- Precautions for new refrigerant r 410a 383
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 383
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 383
- Precautions for new refrigerant r 410a 373 384
- Si34 804 precautions for new refrigerant r 410a 384
- Thermodynamic characteristic of r 410a 384
- Refrigerant cylinders 385
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 386
- Copper tube material and thickness 386
- O soft annealed h hard drawn 386
- 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 386
- Service tools 386
- Tool compatibility 386
- 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 387
- Differences 2 change of dimension a 387
- Flaring tool 387
- Specifications 2 dimension a 387
- Unit mm 387
- Drawings flow charts 396
- Ask a qualified installer or contractor to install this product do not try to install the product yourself improper installation can result in water or refrigerant leakage electrical shock fire or explosion 398
- Cautions on product corrosion 398
- Daikin industries ltd s products are manufactured for export to numerous countries throughout the world daikin industries ltd does not have control over which products are exported to and used in a particular country prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used this statement does not purport to exclude restrict or modify the application of any local legislation 398
- Http www daikin com global_ac 398
- If you have any enquiries please contact your local importer distributor and or retailer 398
- Printed in japan 08 2008 ak si34 804 398
- Read the user s manual carefully before using this product the user s manual provides important safety instructions and warnings be sure to follow these instructions and warnings 398
- Use only those parts and accessories supplied or specified by daikin ask a qualified installer or contractor to install those parts and accessories use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion 398
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