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Daikin RXYQ34PY1 [268/398] J9 outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t
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Si34-601A Troubleshooting by Indication on the Remote Controller
Troubleshooting 257
3.29
“J9”
Outdoor Unit: Malfunction of Subcooling Heat
Exchanger Gas Pipe Thermistor (R5T)
Remote
Controller
Display
J9
Applicable
Models
RXYQ5P~54P
Method of
Malfunction
Detection
Malfunction is detected according to the temperature detected by subcooling heat exchanger
gas pipe thermistor.
Malfunction
Decision
Conditions
When the subcooling heat exchanger gas pipe thermistor is short circuited or open.
Supposed
Causes
Faulty subcooling heat exchanger gas pipe thermistor (R5T)
Faulty outdoor unit PC board
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P365.
(V3075)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
resistance
measured after
removing the thermistor
(R5T) from outdoor unit PC
board normal?
(1.8kΩ to
800kΩ)
Replace outdoor unit PC board
(A1P).
Connect the connector and
operate unit again.
NO
NO
Replace thermistor (R5T).
YES
YES
Is
the connector
for subcooling heat
exchanger gas pipe
thermistor connected to
X30A on outdoor
unit PC board
(A1P)?
Содержание
- Basic control 4 2
- Combination of outdoor units 4 model selection 2
- Function general 2 2
- Functional parts layout 9 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 9 2
- Part 4 function 1 2
- R 410a heat pump 50hz 2
- Refrigerant circuit 0 2
- Refrigerant flow for each operation mode 4 2
- Specifications 2 2
- Table of contents 2
- Other control 23 3
- Outdoor unit pc board layout 60 3 field setting 61 3
- Outline of control indoor unit 29 3
- Part 5 test operation 43 3
- Part 6 troubleshooting 99 3
- Protection control 18 3
- Special control 09 3
- Symptom based troubleshooting 01 2 troubleshooting by remote controller 04 3
- Test operation 44 3
- Troubleshooting by indication on the remote controller 20 4
- List of electrical and functional parts 48 5
- Option list 57 5
- 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
- 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
- E the unit with anti corrosion treatment 13
- General information 13
- Heat pump rxyq 16ph 18ph 24ph 26ph 28ph 30ph 32ph 34ph 36ph y1 e 38ph 40ph 42ph 44ph 46ph 48ph 50ph 13
- Heat pump rxyq 5p 8p 10p 12p 14p 16p 18p 20p 22p y1 e 24p 26p 28p 30p 32p 34p 36p 38p 40p 42p 44p 46p 48p 50p 52p 54p 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 601a 13
- Note fxdq has following 2 series as show below fxdq p n a vet without drain pump for general asia except for eu china and australia fxdq p n a ve with drain pump bev unit is required for each indoor unit ma na rohs directive models specifications dimensions and other functions are not changed compared with m n type 13
- Outdoor units normal series 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
- 600 ceiling mounted cassette type multi flow 14
- Ceiling mounted built in type 14
- Ceiling mounted cassette corner type 14
- Ceiling mounted cassette type double flow 14
- Ceiling mounted cassette type multi flow 14
- Ceiling mounted duct type 14
- Ceiling suspended cassette type connection unit series 14
- Ceiling suspended type 14
- Concealed floor standing type 14
- External appearance 14
- Floor standing type 14
- General information 3 14
- Indoor units 14
- Outdoor air processing unit 14
- Si34 601a external appearance 14
- Slim ceiling mounted duct type 14
- Wall mounted type 14
- External appearance si34 601a 15
- General information 15
- Outdoor units 15
- Rxyq12p 14p 16p 18p 15
- Rxyq20p 22p 24p 26p 28p rxyq30p 32p 34p 36p 15
- Rxyq38p 40p 42p 44p 46p rxyq48p 50p 52p 54p 15
- Rxyq5p rxyq8p 10p 12p europe 15
- Combination of outdoor units 16
- Connectable indoor units number and capacity normal series 18
- General information 7 18
- Model selection 18
- Si34 601a model selection 18
- Vrv iii heat pump series 18
- General information 19
- High cop series energy saving series 19
- Model selection si34 601a 19
- Connectable indoor unit 20
- For general asia except for eu china and australi 20
- Fxdq p n a ve with drain pump bev unit is required for each indoor unit fxzq only for eu australia 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
- Note fxdq has following 2 series as show below fxdq p n a vet without drain pump 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 unit s 23
- Specifications 23
- Specifications si34 601a 23
- Si34 601a specifications 24
- Specifications 13 24
- Specifications 25
- Specifications si34 601a 25
- Si34 601a specifications 26
- Specifications 15 26
- Specifications 27
- Specifications si34 601a 27
- Si34 601a specifications 28
- Specifications 17 28
- Specifications 29
- Specifications si34 601a 29
- Si34 601a specifications 30
- Specifications 19 30
- Specifications 31
- Specifications si34 601a 31
- Si34 601a specifications 32
- Specifications 21 32
- Specifications 33
- Specifications si34 601a 33
- Si34 601a specifications 34
- Specifications 23 34
- Specifications 35
- Specifications si34 601a 35
- Si34 601a specifications 36
- Specifications 25 36
- Specifications 37
- Specifications si34 601a 37
- Si34 601a specifications 38
- Specifications 27 38
- Specifications 39
- Specifications si34 601a 39
- Si34 601a specifications 40
- Specifications 29 40
- Specifications 41
- Specifications si34 601a 41
- Si34 601a specifications 42
- Specifications 31 42
- Specifications 43
- Specifications si34 601a 43
- Ceiling mounted cassette type double flow 44
- Indoor units 44
- Si34 601a specifications 44
- Specifications 33 44
- Ceiling mounted cassette type double flow 45
- Specifications 45
- Specifications si34 601a 45
- Ceiling mounted cassette type multi flow 46
- Si34 601a specifications 46
- Specifications 35 46
- Ceiling mounted cassette type multi flow 47
- Specifications 47
- Specifications si34 601a 47
- 600 ceiling mounted cassette type multi flow 48
- Si34 601a specifications 48
- Specifications 37 48
- 600 ceiling mounted cassette type multi flow 49
- Specifications 49
- Specifications si34 601a 49
- Ceiling mounted cassette corner type 50
- Si34 601a specifications 50
- Specifications 39 50
- Slim ceiling mounted duct type with drain pump 51
- Specifications 51
- Specifications si34 601a 51
- Si34 601a specifications 52
- Slim ceiling mounted duct type with drain pump 52
- Specifications 41 52
- Slim ceiling mounted duct type without drain pump 53
- Specifications 53
- Specifications si34 601a 53
- Si34 601a specifications 54
- Slim ceiling mounted duct type without drain pump 54
- Specifications 43 54
- Slim ceiling mounted duct type pve with drain pump pvet without drain pump 55
- Specifications 55
- Specifications si34 601a 55
- Ceiling mounted built in type 56
- Si34 601a specifications 56
- Specifications 45 56
- Ceiling mounted built in type 57
- Specifications 57
- Specifications si34 601a 57
- Ceiling mounted built in type 58
- Si34 601a specifications 58
- Specifications 47 58
- Ceiling mounted duct type 59
- Specifications 59
- Specifications si34 601a 59
- Ceiling mounted duct type 60
- Si34 601a specifications 60
- Specifications 49 60
- Ceiling suspended type 61
- Specifications 61
- Specifications si34 601a 61
- Si34 601a specifications 62
- Specifications 51 62
- Wall mounted type 62
- Specifications 63
- Specifications si34 601a 63
- Wall mounted type 63
- Floor standing type 64
- Si34 601a specifications 64
- Specifications 53 64
- Floor standing type 65
- Specifications 65
- Specifications si34 601a 65
- Concealed floor standing type 66
- Si34 601a specifications 66
- Specifications 55 66
- Concealed floor standing type 67
- Specifications 67
- Specifications si34 601a 67
- Bev units 68
- Ceiling suspended cassette type 68
- Si34 601a specifications 68
- Specifications 57 68
- Outdoor air processing unit 69
- Specifications 69
- Specifications si34 601a 69
- Functional parts layout 9 70
- Part 3 refrigerant circuit 70
- Refrigerant circuit 0 70
- Refrigerant flow for each operation mode 4 70
- Refirgerant circuit 71
- Refrigerant circuit 71
- Refrigerant circuit si34 601a 71
- Rxyq5p 71
- Refirgerant circuit 61 72
- Rxyq5p 72
- Si34 601a refrigerant circuit 72
- Refirgerant circuit 73
- Refrigerant circuit si34 601a 73
- Rxyq8p 73
- Refirgerant circuit 63 74
- Rxyq8p 74
- Si34 601a refrigerant circuit 74
- Refirgerant circuit 75
- Refrigerant circuit si34 601a 75
- Rxyq10p 12p 75
- Refirgerant circuit 65 76
- Rxyq10p 12p 76
- Si34 601a refrigerant circuit 76
- Refirgerant circuit 77
- Refrigerant circuit si34 601a 77
- Rxyq14p 16p 18p 77
- Refirgerant circuit 67 78
- Rxyq14p 16p 18p 78
- Si34 601a refrigerant circuit 78
- Main control equipment 79
- Outdoor air processing unit fxmq125mfv1 250mfv1 79
- Refrigerant system 79
- Sh control superheated control of heat exchanger outlet sc control subcooling control of heat exchanger outlet 79
- Thermistor 79
- Front view 80
- Functional parts layout 80
- Refirgerant circuit 69 80
- Rxyq5p 80
- Si34 601a functional parts layout 80
- Front view 81
- Functional parts layout si34 601a 81
- Refirgerant circuit 81
- Rxyq8p 81
- Accumulator 82
- Front view 82
- Heat exchanger 82
- Refirgerant circuit 71 82
- Rxyq10p 12p 12p europe 82
- Si34 601a functional parts layout 82
- Accumulator 83
- Front view 83
- Functional parts layout si34 601a 83
- Heat exchanger 83
- Refirgerant circuit 83
- Rxyq12p 83
- Accumulator 84
- Front view 84
- Heat exchanger 84
- Refirgerant circuit 73 84
- Rxyq14p 16p 18p 84
- Si34 601a functional parts layout 84
- Refirgerant circuit 85
- Refrigerant flow for each operation mode 85
- Refrigerant flow for each operation mode si34 601a 85
- Rxyq5p cooling operation 85
- Cooling oil return operation 86
- Refirgerant circuit 75 86
- Si34 601a refrigerant flow for each operation mode 86
- Heating oil return defrost operation 87
- Refirgerant circuit 87
- Refrigerant flow for each operation mode si34 601a 87
- Heating operation 88
- Refirgerant circuit 77 88
- Si34 601a refrigerant flow for each operation mode 88
- Refirgerant circuit 89
- Refrigerant flow for each operation mode si34 601a 89
- Rxyq8p cooling operation 89
- Cooling oil return 90
- Refirgerant circuit 79 90
- Si34 601a refrigerant flow for each operation mode 90
- Heating oil return defrost 91
- Refirgerant circuit 91
- Refrigerant flow for each operation mode si34 601a 91
- Heating operation 92
- Refirgerant circuit 81 92
- Si34 601a refrigerant flow for each operation mode 92
- Refirgerant circuit 93
- Refrigerant flow for each operation mode si34 601a 93
- Rxyq10p 12p cooling operation 93
- Cooling oil return 94
- Refirgerant circuit 83 94
- Si34 601a refrigerant flow for each operation mode 94
- Heating oil return defrost 95
- Refirgerant circuit 95
- Refrigerant flow for each operation mode si34 601a 95
- Heating operation 96
- Refirgerant circuit 85 96
- Si34 601a refrigerant flow for each operation mode 96
- Refirgerant circuit 97
- Refrigerant flow for each operation mode si34 601a 97
- Rxyq14p 16p 18p cooling operation 97
- Cooling oil return operation 98
- Refirgerant circuit 87 98
- Si34 601a refrigerant flow for each operation mode 98
- Heating oil return defrost operation 99
- Refirgerant circuit 99
- Refrigerant flow for each operation mode si34 601a 99
- Heating operation 100
- Refirgerant circuit 89 100
- Si34 601a refrigerant flow for each operation mode 100
- Basic control 4 102
- Function general 2 102
- Other control 23 102
- Outline of control indoor unit 29 102
- Part 4 function 102
- Protection control 18 102
- Special control 09 102
- Function general 103
- Symbol 103
- Function 93 104
- In the event indoor unit stops or the thermostat turns off while in oil return operation or defrosting operation pump down residual operation is performed on completion of the oil return operation or defrosting operation 104
- Malfunction standby retry 104
- Operation mode 104
- Si34 601a function general 104
- 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 135 105
- Basic control 105
- List of functions in normal operation 105
- Normal operation 105
- Compressor pi control 106
- Compressor pi control carries out the compressor capacity pi control to maintain te at constant during cooling operation and tc at constant during heating operation to ensure stable unit performance 106
- Cooling operation 106
- Heating operation 106
- Basic control si34 601a 107
- Function 107
- Operating priority and rotation of compressors for multi standard connection system 107
- Function 97 108
- 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 108
- Inv std1 std2 108
- No 1 no 4 no 7 108
- No 2 no 5 no 8 108
- No 3 no 6 no 9 108
- Rxyq40p 42p 44p 108
- Rxyq46p 48p 108
- Rxyq50p 52p 54p 108
- Si34 601a basic control 108
- Basic control si34 601a 109
- 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 109
- Function 109
- 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 109
- Operating priority and rotation of compressors 109
- Rxyq10py1 12py1 109
- Rxyq14py1 16py1 109
- Rxyq18py1 109
- Rxyq5py1 109
- Rxyq8py1 109
- Stand alone installation 109
- Function 99 110
- 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 110
- Represents the range in which hz is not stepped up 110
- Rxyq20py1 8 12hp 110
- Rxyq22py1 10 12hp 110
- Si34 601a basic control 110
- Two unit multi system 110
- Basic control si34 601a 111
- Function 111
- 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 111
- Represents the range in which hz is not stepped up 111
- Rxyq24py1 8 16hp 111
- Rxyq26py1 8 18hp 111
- Function 101 112
- 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 112
- Represents the range in which hz is not stepped up 112
- Rxyq 32py1 16 16hp 112
- Rxyq28py1 30py1 10 12 18hp 112
- Si34 601a basic control 112
- Basic control si34 601a 113
- Function 113
- 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 113
- Represents the range in which hz is not stepped up 113
- Rxyq 34py1 16 18hp 113
- Rxyq36py1 18 18hp 113
- Function 103 114
- 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 114
- Represents the range in which hz is not stepped up 114
- Rxyq 40py1 8 16 16hp 114
- Rxyq38py1 8 12 18hp 114
- Si34 601a basic control 114
- Three unit multi system 114
- Basic control si34 601a 115
- Function 115
- 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 115
- Represents the range in which hz is not stepped up 115
- Rxyq 42py1 8 16 18hp 115
- Rxyq44py1 8 18 18hp 115
- Function 105 116
- 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 116
- Represents the range in which hz is not stepped up 116
- Rxyq46py1 48py1 10 12 18 18hp 116
- Rxyq50py1 52py1 14 16 18 18hp 116
- Si34 601a basic control 116
- Basic control si34 601a 117
- Function 117
- 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 117
- Rxyq54py1 18 18 18hp 117
- Electronic expansion valve pi control 118
- 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 118
- 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 118
- Step control of outdoor unit fans 118
- 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 118
- 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 118
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 118
- Outdoor unit fan control in cooling operation 119
- 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 119
- Special control 120
- Startup control 120
- Startup control in cooling operation 120
- Startup control in heating operation 120
- 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 120
- Large capacity start up control heating 121
- Start up std compressors at intervals of 15 seconds 121
- 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 122
- 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 rxyq14 18p 122
- Oil return operation 122
- Oil return operation in cooling operation 122
- 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 122
- 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 rxyq1 123
- Oil return operation in heating operation 123
- Defrosting operation 124
- 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 defrost operation non operating unit stops during defrost preparation operation actuators are based on rxyq14 18p 124
- To defrost the outdoor unit heat exchanger while in evaporator the defrost operation is conducted to recover the heating capacity start conditions referring to the set conditions for the following items start the defrosting operation heat transfer coefficient of the outdoor unit heat exchanger heat exchange temperature tb timer set to two hours at minimum furthermore the heat transfer coefficient of the outdoor unit evaporator is computed from tc te and compressor loads 124
- Actuators are based on rxyq14 18p 125
- 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 125
- Pump down residual operation 125
- Pump down residual operation in cooling operation 125
- Pump down residual operation in heating operation 125
- Actuators are based on rxyq14 18p 126
- Crankcase heater control 126
- 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 126
- Restart standby 126
- Standby 126
- 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 126
- Actuators are based on rxyq14 18p 127
- 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 127
- Stop due to malfunction 127
- Stopping operation 127
- This mode is used to define actuator operations when the system stops 127
- When system is in stop mode normal operation stop 127
- In heating operation the system operates with following mode 128
- Stopping operation of slave units during master unit is in operation with multi outdoor unit system 128
- 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 128
- High pressure protection control 129
- In cooling operation 129
- In heating operation 129
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 129
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 129
- Protection control 129
- 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 129
- Hot gas svp off 130
- Hot gas svp on 130
- In cooling operation 130
- In heating operation 130
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 130
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 130
- Low pressure protection control 130
- Master unit 52 hz off off 130
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 130
- Discharge pipe protection control 131
- Each compressor performs the discharge pipe temperature protection control individually in the following sequence 131
- Inv compressor 131
- Std compressor 131
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 131
- Fin temp standby 132
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 132
- 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 132
- Inverter fin temp 81 c continues for 3 min or more 132
- Inverter fin temperature control 132
- Inverter overcurrent protection control 132
- Inverter protection control 132
- Tfin 81 c inv upper limit rps max 132
- Under fin temperature protection control 132
- When occurring 4 times within 60 min the malfunction code l4 is output 132
- 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 133
- Injection control only for rxyq5p 133
- Std compressor overload protection 133
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 133
- After oil return operation after defrosting operation at the beginning of the starting control when any of outdoor unit stops for a period of 20 minutes or more in heating there are outdoor units that stop operation in cooling low pressure of all outdoor units in operation is less than 0 5 mpa in cooling 134
- Details of outdoor unit rotation in the case of multi outdoor unit system each outdoor unit is given an operating priority for the control outdoor unit rotation makes it possible to change the operating priority of outdoor units thus the system becomes free of compressors that stop over an extended period of time at the time of partial loading preventing unbalanced oil level 134
- Example the following diagram shows outdoor unit rotation in combination of 3 outdoor units in heating in cooling 134
- In the case of multi outdoor unit system this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units 134
- Other control 134
- Outdoor unit rotation 134
- Timing of outdoor unit rotation 134
- 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 135
- Emergency operation 135
- Restrictions for emergency operation 135
- In the case of 1 outdoor unit system rxyq8p to 18p 136
- In the case of multi outdoor unit system rxyq20p to 54p 136
- Note in order to forcedly clear the automatic backup operation reset the power supply with the outdoor unit in the stopped state 137
- Demand operation 139
- Heating operation is prohibited above 24 c ambient temperature 139
- Heating operation prohibition 139
- 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 139
- Drain pump control 140
- Outline of control indoor unit 140
- Louver control for preventing ceiling dirt 142
- Thermostat sensor in remote controller 143
- 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 145
- Function 145
- Furthermore while in dry operation mode fans operate at l flow rate stops for a period of six minutes while the thermostat is off and then return to operation at l flow rate this control is used to prevent a rise in indoor temperature while in thermostat off mode 145
- Outline of control indoor unit si34 601a 145
- Thermostat control in dry operation 145
- Thermostat control while in normal operation 145
- 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 145
- 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 145
- While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 145
- Electronic expansion valve control 146
- Hot start control in heating operation only 146
- Freeze prevention 147
- Heater control 147
- 1 l or ll only on fxfq models 148
- 2 the heater control on off is conducted by converting the heater temperature into the condensing pressure equivalent saturated temperature tc according to the temperature detection through the high pressure sensor sinph of the outdoor unit 148
- Fan residual operation while the heater turns off in order to prevent the activation of the thermal protector the fan conducts residual operation for a given period of time after the heater turns off this operation is conducted regardless of with or without heater equipped 148
- List of swing flap operations 148
- Residual operation time 100 seconds on ceiling suspended type or 60 seconds on other types 148
- Swing flaps operate as shown in table below 148
- 5 5 15 19 149
- Control of outdoor air processing unit unique control for outdoor air processing unit 149
- Details outdoor air processing unit 149
- Objective to select cooling heating or fan operation mode according to the suction air outdoor air temperature 149
- Selection of operation mode by suction air thermostat 149
- Discharge air 150
- Discharge air temperature control 150
- Ev ev ev ev ev ev 150
- Is ev possible to close 150
- Is ev possible to open 150
- Refrigerant 150
- Sh t3 t2 150
- Temp setting 150
- Discharge air 151
- Ev ev ev ev ev ev 151
- Is ev possible to close 151
- Is ev possible to open 151
- Refrigerant 151
- Sc tc t2 151
- Temp setting 151
- Yes yes 151
- Low outdoor air temperature protection control 152
- Outdoor unit pc board layout 60 3 field setting 61 154
- Part 5 test operation 154
- Test operation 44 154
- Below fiure shows the installation process install in the order of the steps shown 155
- Installation process 155
- Test operation 155
- Check work prior to turn power supply on 156
- Follow the following procedure to conduct the initial test operation after installation 156
- Procedure and outline 156
- Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 157
- Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate 157
- Check for normal operation 157
- Check the led display of the outdoor unit pc board 157
- Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 157
- Conduct check operations 157
- Make field settings if needed for the setting procedure refer to information in 3 field setting from outdoor unit on page 174 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 157
- Make field settings with outdoor unit pc board 157
- Test operation 157
- Test operation si34 601a 157
- 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 157
- 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 157
- Turn outdoor unit and indoor unit power on 157
- Turn power on 157
- Absolutely do not open the shutoff valve until the main power ciruit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop 158
- Air tight test and vacuum drying 158
- Always use nitrogen gas for the airtightness test 158
- Preparations 158
- Referring to figure 28 connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit 158
- See shutoff valve operation procedure for details on handling the shutoff valve refer page 149 158
- 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 158
- The refrigerant charge port is connected to unit pipe when shipped the unit contains refrigerant so use caution when attaching the charge hose 158
- The shutoff valve and valve a c in figure 28 should be open or closed as shown in the table below 158
- Additional refrigerant charge and check operation 159
- Air tight test and vacuum drying method 159
- Before working 159
- Note total amount of refrigerant should be 100 kg or less 159
- After tightening the cap make sure no refrigerant gas is leaking 160
- Be sure to use the correct tools 160
- Do not open the shutoff valve until 1 check work prior to turn power supply on in page 145 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 160
- Shutoff valve operation procedure 160
- The shutoff valve is not a back seat type if forced it to open it might break the valve body 160
- When operating the shutoff valve follow the procedure instructed below 160
- When using a service port use the charge hose 160
- 3 3 3 3 3 161
- 3 3 4 3 4 161
- 3 4 3 3 3 161
- 4 3 3 3 3 161
- 5 3 5 5 3 161
- How to check how many units are connected 161
- 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 161
- Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 default 161
- Procedure of adding refrigerant charging and check operation 162
- Fig 31 163
- Fig 32 163
- Fig 33 163
- Note the refrigerant will be charged about 22kg in one hour at outdoor temp 30 c db 6kg at 0 c db if you need to speedup in case of multi system connect the refrigerant cylinders to each outdoor unit as shown in the figure 33 163
- Open the valve c see the figure 31 the valve a b and the liquid and gas side shutout valve must be left closed and charge the refrigerant of the additional charging amount from the liquid side shutout valve service port if the additional charging amount was charged fully close the valve c and go to step 5 if the additional charging amount was not charged fully go to step 4 163
- Perform the refrigerant charging operation following refrigerant charging operation procedure as shown in page 153 and charge the remaining refrigerant of the additional charging amount for performing the refrigerant charging operation the push button on the pc board a1p of outdoor unit incase of multi system master unit are use see the figure 32 in addition the refrigerant are charged from the refrigerant charge port via the valve a see the figure 33 for operating the push button and opening and closing the valve follow the work procedure 163
- Test operation 163
- Test operation si34 601a 163
- Refrigerant charging operation procedure 164
- Step1 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 33 display of normal system 164
- Step2 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 step3 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 155 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 164
- Check of miswiring 165
- Check of refrigerant overcharge it takes about 40 minutes to complete the check operation 165
- Check of shutoff valve opening 165
- Check operation procedure 165
- How to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 165
- Judgment of piping length 165
- Note for check operation the following work will be performed 165
- Step1 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 step2 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 step3 check the led display on the outdoor unit pc board a1p is as shown in the table below and transmission is normal 165
- Step4 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 step5 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 165
- If any malfunction codes other than the above are displayed check the service manual for how to respond 166
- Remote controller displays malfunction code 166
- Onsite settings 167
- Onsite settings with the power off 167
- Onsite settings with the power on 167
- Before test run 168
- Test run 168
- Checks after test run 169
- 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 170
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter p c b a2p and control transformer t1r t2r in switch box together 170
- Operation when power is turned on 170
- 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 170
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 170
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 170
- When turning on power first time 170
- When turning on power the second time and subsequent 170
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 171
- 2 set mode display led leds display mode according to the setting 171
- 3 mode setting switch used to change mode 171
- 4 local setting switch used to make field settings 171
- Outdoor unit pc board 171
- Outdoor unit pc board layout 171
- Field setting 172
- Field setting from remote controller 172
- Wireless remote controller indoor unit 173
- Simplified remote controller 174
- Field setting si34 601a 175
- 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 175
- Setting contents and code no vrv indoor unit 175
- Test operation 175
- Applicable range of field setting 176
- Si34 601a field setting 176
- Static pressure selection 176
- Test operation 165 176
- Detailed explanation of setting modes 177
- External on off input 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 177
- Fan speed changeover when thermostat is off by setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off 177
- Filter sign setting 177
- If switching the filter sign on time set as given in the table below set time 177
- Setting table 177
- Since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 177
- Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 177
- Air flow adjustment ceiling height make the following setting according to the ceiling height the setting position no is set to 01 at the factory 178
- Auto restart after power failure reset 178
- 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 178
- 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 178
- 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 178
- In the case of fxaq fxhq 178
- In the case of fxfq100 125 178
- In the case of fxfq25 80 178
- In the case of fxuq71 125 178
- Air flow direction setting set the air flow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 179
- Air flow rate switching at discharge grille for field air flow rate switching when the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate follow the instruction manual for the optional parts to enter the setting numbers 179
- Setting of air flow direction adjustment only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 179
- Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 179
- Setting of the static pressure selection for fxdq model 179
- Setting table 179
- Note bold face in indicates the default setting 180
- Outdoor air processing unit field setting remote controller 180
- Centralized control group no setting 181
- Brc7c type brc7e type brc4c type 182
- 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 182
- 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 182
- Group no setting example 182
- Si34 601a field setting 182
- Test operation 171 182
- Contents of control modes 183
- Setting of operation control mode from remote controller local setting 183
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 184
- Factory setting 184
- 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 184
- Field setting from outdoor unit 185
- 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 161 onward 185
- For setting items of 1 refer to detailed information provided on page 174 onward 186
- Caution 187
- Dip switch detail 187
- Dip switch setting after changing the main p c board a1p to spare parts p c b after the replacement by the spare pc board be sure to make settings shown below when you change the main p c board a1p to spare parts p c b please carry out the following setting 187
- 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 187
- Initial conditions of dip switches 187
- Make the following settings according to models of outdoor units all models are set to off at factory 187
- Refer ds1 1 4 ds2 1 4 setting detail on next page 187
- 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 1 187
- Detail of ds1 1 4 ds2 1 4 setting for overseas general 188
- 7 8 7 7 7 7 190
- A setting mode 1 190
- Procedure for changing cool heat selection setting 190
- Si34 601a field setting 190
- Test operation 179 190
- This mode is used to set and check the following items 1 set items in order to make cool heat selection in a batch of outdoor unit group change the setting cool heat selection ind used to select cool or heat by individual outdoor unit factory set cool heat selection master used to select cool or heat by outdoor unit group with the master unit cool heat selection slave used to select cool or heat by outdoor unit group with the slave unit 2 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 190
- B setting mode 2 191
- 7 7 7 7 7 195
- 7 7 7 7 8 195
- 7 7 7 7 9 195
- 7 7 7 8 7 195
- 7 7 7 8 8 195
- 7 7 7 9 7 195
- 7 7 8 7 7 195
- 7 7 8 7 8 195
- 7 7 8 8 7 195
- 7 7 8 8 8 195
- 7 7 9 7 7 195
- 7 8 7 7 7 195
- 7 8 7 7 8 195
- 7 8 7 8 7 195
- 7 8 7 8 8 195
- 7 8 8 7 7 195
- 7 8 8 7 8 195
- 7 8 8 8 7 195
- 7 8 8 8 8 195
- 8 7 7 7 7 195
- 8 7 8 7 7 195
- 8 7 8 7 8 195
- 8 7 8 8 7 195
- 8 8 7 7 8 195
- C monitor mode 195
- Defrost select setting short 195
- Emg operation backup operation setting 195
- Field setting si34 601a 195
- Setting item 0 display contents of number of units for various settings 195
- Tc setting h 195
- Te setting h 195
- Test operation 195
- The numbers in the no column represent the number of times to press the set bs2 button 195
- Cool heat mode switching 197
- For the details refer to the installation manual supplied together with the indoor unit 197
- In the case of wired remote controllers 197
- In the case of wireless remote controllers 197
- It does not matter whether or not there is outdoor outdoor unit wiring 197
- Set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by cool heat switching remote controller 197
- Set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote controller 197
- Set cool heat separately for each outdoor unit system by cool heat selector 197
- Set cool heat separately for each outdoor unit system by indoor unit remote controller 197
- Set cool heat switching to ind individual for setting mode 1 factory set 197
- Set outdoor unit pc board ds1 1 to in factory set 197
- Set the master unit indoor unit having the right to select the cooling heating operation mode 197
- There are the following 4 cool heat switching modes 197
- It does not matter whether or not there is outdoor outdoor unit wiring 198
- Set cool heat separately for each outdoor unit system by cool heat selector 198
- Set cool heat switching to ind individual for setting mode 1 factory set 198
- Set outdoor unit pc board ds1 1 to out factory set 198
- Multi outdoor units connection 199
- Multi outdoor units connection 200
- Address setting for 201
- Set lower 5 digits with binary number no to no 1 201
- Supplementation on 201
- When switching cool heat for each adapter pc board with the use of more than one adapter pc board set the address of the external control adaptor for outdoor unit pc board ds1 and ds2 so that it matches the unified cool heat address of outdoor unit main pc board 201
- Setting of low noise operation and demand operation 202
- Image of operation in the case of a 203
- Image of operation in the case of a and b 203
- Image of operation in the case of b 203
- 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 204
- 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 204
- 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 204
- Field setting si34 601a 205
- Image of operation in the case of a 205
- Image of operation in the case of a and b 205
- Image of operation in the case of b 205
- Test operation 205
- Setting of refrigerant recovery mode 208
- Check operation detail 209
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 209
- Operating procedure 209
- Press mode button bs1 once and reset setting mode 2 209
- Setting of vacuuming mode 209
- Use the vacuum pump to perform vacuuming operation 209
- 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 209
- Part 6 troubleshooting 210
- Symptom based troubleshooting 01 2 troubleshooting by remote controller 04 210
- Troubleshooting by indication on the remote controller 20 210
- Troubleshooting op central remote controller 97 211
- Troubleshooting op unified on off controller 05 211
- Symptom based troubleshooting 212
- Inspection mode 215
- Local setting mode service mode 215
- Normal mode 215
- Test operation mode 215
- The following modes can be selected by using the inspection test operation button on the remote control 215
- The inspection test button 215
- Troubleshooting by remote controller 215
- Self diagnosis by wired remote controller 216
- Self diagnosis by wireless remote controller 217
- The lower digit of the code changes as shown below when the up and down buttons are pressed 218
- Operation of the remote controller s inspection test operation button 220
- Si34 601a troubleshooting by remote controller 220
- Troubleshooting 209 220
- Remote controller service mode 221
- Remote controller self diagnosis function 223
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 225
- Detail description on next page 227
- Malfunction code indication by outdoor unit pc board 227
- Push the mode bs1 button and returns to setting mode 1 227
- Push the return bs3 button and switches to the initial status of monitor mode 227
- Push the return bs3 button once to display first digit of malfunction code 227
- Push the set bs2 button and set the led display to a setting item 227
- Push the set bs2 button once to display malfunction location 227
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 227
- Push the set bs2 button once to display second digit of malfunction code 227
- Refer to p 84 for monitor mode 227
- To enter the monitor mode push the mode bs1 button when in setting mode 1 227
- Troubleshooting 227
- Troubleshooting by remote controller si34 601a 227
- Si34 601a troubleshooting by remote controller 228
- Troubleshooting 217 228
- Detail description on next page 229
- Push the mode bs1 button and returns to setting mode 1 229
- Push the return bs3 button and switches to the initial status of monitor mode 229
- Push the return bs3 button once to display first digit of malfunction code 229
- Push the set bs2 button and set the led display to a setting item 229
- Push the set bs2 button once to display malfunction location 229
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 229
- Push the set bs2 button once to display second digit of malfunction code 229
- Refer to p 84 for monitor mode 229
- To enter the monitor mode push the mode bs1 button when in setting mode 1 229
- Troubleshooting 229
- Troubleshooting by remote controller si34 601a 229
- Si34 601a troubleshooting by remote controller 230
- Troubleshooting 219 230
- A0 indoor unit error of external protection device 231
- Actuation of external protection device 231
- Applicable models all indoor unit models 231
- Defect of indoor unit pc board 231
- Detect open or short circuit between external input terminals in indoor unit 231
- Improper field set 231
- Malfunction decision conditions 231
- Method of malfunction detection 231
- Remote controller display 231
- Supposed causes 231
- Troubleshooting 231
- Troubleshooting by indication on the remote controller 231
- When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 231
- A1 indoor unit pc board defect 232
- A3 indoor unit malfunction of drain level control system s1l 233
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 234
- Si34 601a troubleshooting by indication on the remote controller 234
- Troubleshooting 234
- Troubleshooting 223 234
- A6 indoor unit fan motor m1f lock overload 235
- Applicable models all indoor units 235
- Detection by failure of signal for detecting number of turns to come from the fan motor 235
- Disconnected or faulty wiring between fan motor and pc board 235
- Fan motor lock 235
- Malfunction decision conditions 235
- Method of malfunction detection 235
- Remote controller display 235
- Supposed causes 235
- Troubleshooting 235
- Troubleshooting by indication on the remote controller si34 601a 235
- When number of turns can t be detected even when output voltage to the fan is maximum 235
- A7 indoor unit malfunction of swing flap motor m1s 236
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 237
- Troubleshooting 237
- Troubleshooting by indication on the remote controller si34 601a 237
- A9 indoor unit malfunction of moving part of electronic expansion valve y1e 238
- Applicable models all indoor unit models 238
- Defect of connecting cable 238
- Defect of indoor unit pc board 238
- Malfunction decision conditions 238
- Malfunction of moving part of electronic expansion valve 238
- Method of malfunction detection 238
- Remote controller display 238
- Si34 601a troubleshooting by indication on the remote controller 238
- Supposed causes 238
- Troubleshooting 238
- Troubleshooting 227 238
- Use a microcomputer to check the electronic expansion valve for coil conditions 238
- When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer 238
- 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 239
- Continuity no continuity 239
- Normal 239
- Af indoor unit drain level above limit 240
- Aj indoor unit malfunction of capacity determination device 241
- Applicable models all indoor unit models 242
- C4 indoor unit malfunction of thermistor r2t for heat exchanger 242
- Defect of indoor unit pc board 242
- Defect of thermistor r2t for liquid pipe 242
- Malfunction decision conditions 242
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 242
- Method of malfunction detection 242
- Refer to thermistor resistance temperature characteristics table on p365 242
- Remote controller display 242
- Si34 601a troubleshooting by indication on the remote controller 242
- Supposed causes 242
- Troubleshooting 242
- Troubleshooting 231 242
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 242
- Applicable models all indoor unit models 243
- C5 indoor unit malfunction of thermistor r3t for gas pipes 243
- Defect of indoor unit pc board 243
- Defect of indoor unit thermistor r3t for gas pipe 243
- Malfunction decision conditions 243
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 243
- Method of malfunction detection 243
- Refer to thermistor resistance temperature characteristics table on p365 243
- Remote controller display 243
- Supposed causes 243
- Troubleshooting 243
- Troubleshooting by indication on the remote controller si34 601a 243
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 243
- Applicable models aii indoor unit models 244
- C9 indoor unit malfunction of thermistor r1t for suction air 244
- Defect of indoor unit pc board 244
- Defect of indoor unit thermistor r1t for air inlet 244
- Malfunction decision conditions 244
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 244
- Method of malfunction detection 244
- Refer to thermistor resistance temperature characteristics table on p365 244
- Remote controller display 244
- Si34 601a troubleshooting by indication on the remote controller 244
- Supposed causes 244
- Troubleshooting 244
- Troubleshooting 233 244
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 244
- Cj indoor unit malfunction of thermostat sensor in remote controller 245
- E1 outdoor unit pc board defect 246
- E3 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 601a troubleshooting by indication on the remote controller 248
- Troubleshooting 248
- Troubleshooting 237 248
- E4 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 601a troubleshooting by indication on the remote controller 250
- Troubleshooting 250
- Troubleshooting 239 250
- E5 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 601a troubleshooting by indication on the remote controller 252
- Troubleshooting 252
- Troubleshooting 241 252
- Abnormal case 253
- Applicable models rxyq5p 54p 253
- Closed stop value 253
- Detects the overcurrent with current sensor ct 253
- E6 outdoor unit std compressor motor overcurrent lock 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
- 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
- Troubleshooting by indication on the remote controller si34 601a 253
- V unit 15 a 253
- E7 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 601a 255
- Note refer check 1 and 2 to p 11 256
- Si34 601a troubleshooting by indication on the remote controller 256
- Troubleshooting 256
- Troubleshooting 245 256
- E9 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 601a 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 rxyq5p 54p 259
- F3 outdoor unit abnormal discharge pipe temperature 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
- Refer to thermistor resistance temperature characteristics table on p366 259
- Remote controller display 259
- Supposed causes 259
- Troubleshooting 259
- Troubleshooting by indication on the remote controller si34 601a 259
- When the discharge pipe temperature rises to an abnormally high level when the discharge pipe temperature rises suddenly 259
- F6 outdoor unit refrigerant overcharged 260
- Abnormal fan motor signal circuit malfunction 261
- Applicable models rxyq5p 54p 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
- H7 outdoor unit abnormal outdoor fan motor signal 261
- In case of detection of abnormal signal at starting fan motor 261
- Malfunction decision conditions 261
- Method of malfunction detection 261
- Remote controller display 261
- Supposed causes 261
- Troubleshooting 261
- Troubleshooting by indication on the remote controller si34 601a 261
- Applicable models rxyq5p 54p 262
- Defect of outdoor unit pc board a1p 262
- Defect of thermistor r1t for outdoor air 262
- H9 outdoor unit malfunction 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
- Refer to thermistor resistance temperature characteristics table on p365 262
- Remote controller display 262
- Si34 601a troubleshooting by indication on the remote controller 262
- Supposed causes 262
- Troubleshooting 262
- Troubleshooting 251 262
- When the outside air temperature thermistor has short circuit or open circuit 262
- Applicable models rxyq5p 54p 263
- Faulty current sensor a6p a7p 263
- Faulty outdoor unit pc board 263
- J2 outdoor unit current sensor malfunction 263
- Malfunction decision conditions 263
- Malfunction is detected according to the current value detected by current sensor 263
- Method of malfunction detection 263
- Remote controller display 263
- Supposed causes 263
- Troubleshooting 263
- Troubleshooting by indication on the remote controller si34 601a 263
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 263
- Applicable models rxyq5p 54p 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
- J3 outdoor unit malfunction of discharge pipe thermistor r3 r31 33t 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
- Refer to thermistor resistance temperature characteristics table on p366 264
- Remote controller display 264
- Si34 601a troubleshooting by indication on the remote controller 264
- Supposed causes 264
- The alarm indicator is displayed when the fan is being used also 264
- Troubleshooting 264
- Troubleshooting 253 264
- When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 264
- J5 outdoor unit malfunction of thermistor r2t r7t for suction pipe 265
- Applicable models rxyq5p 54p 266
- Defect of outdoor unit pc board a1p 266
- Defect of thermistor connection 266
- Defect of thermistor r4t for outdoor unit coil 266
- J6 outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger 266
- Malfunction decision conditions 266
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 266
- Method of malfunction detection 266
- Refer to thermistor resistance temperature characteristics table on p365 266
- Remote controller display 266
- Si34 601a troubleshooting by indication on the remote controller 266
- Supposed causes 266
- Troubleshooting 266
- Troubleshooting 255 266
- When a short circuit or an open circuit in the heat exchange thermistor is detected 266
- Applicable models rxyq5p 54p 267
- Defect of thermistor connection 267
- Faulty liquid pipe thermistor r6t 267
- Faulty outdoor unit pc board 267
- J7 outdoor unit malfunction of liquid pipe thermistor r6t 267
- Malfunction decision conditions 267
- Malfunction is detected according to the temperature detected by liquid pipe thermistor 267
- Method of malfunction detection 267
- Refer to thermistor resistance temperature characteristics table on p365 267
- Remote controller display 267
- Supposed causes 267
- Troubleshooting 267
- Troubleshooting by indication on the remote controller si34 601a 267
- When the liquid pipe thermistor is short circuited or open 267
- Applicable models rxyq5p 54p 268
- Faulty outdoor unit pc board 268
- Faulty subcooling heat exchanger gas pipe thermistor r5t 268
- J9 outdoor unit malfunction of 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
- Refer to thermistor resistance temperature characteristics table on p365 268
- Remote controller display 268
- Si34 601a troubleshooting by indication on the remote controller 268
- Supposed causes 268
- Troubleshooting 268
- Troubleshooting 257 268
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 268
- Applicable models rxyq5p 54p 269
- Connection of low pressure sensor with wrong connection 269
- Defect of high pressure sensor system 269
- Defect of outdoor unit pc board 269
- Ja outdoor unit malfunction of high pressure sensor 269
- Malfunction decision conditions 269
- Malfunction is detected from the pressure detected by the high pressure sensor 269
- Method of malfunction detection 269
- Refer to pressure sensor pressure voltage characteristics table on p367 269
- Remote controller display 269
- Supposed causes 269
- Troubleshooting 269
- Troubleshooting by indication on the remote controller si34 601a 269
- Voltage measurement point 269
- When the high pressure sensor is short circuit or open circuit 269
- Jc outdoor unit malfunction of low pressure sensor 270
- Actuation of fin thermal actuates above 93 c 271
- Applicable models rxyq5p 54p 271
- Defect of fin thermistor 271
- Defect of inverter pc board 271
- Fin temperature is detected by the thermistor of the radiation fin 271
- L4 outdoor unit malfunction of inverter radiating fin temperature rise 271
- Malfunction decision conditions 271
- Method of malfunction detection 271
- Remote controller display 271
- Supposed causes 271
- Troubleshooting 271
- Troubleshooting by indication on the remote controller si34 601a 271
- When the temperature of the inverter radiation fin increases above 93 c 271
- Inverter pcb for compressor 272
- Refer to thermistor resistance temperature characteristics table on p365 272
- L5 outdoor unit inverter compressor abnormal 273
- Si34 601a troubleshooting by indication on the remote controller 274
- Troubleshooting 274
- Troubleshooting 263 274
- Applicable models rxyq5p 54p 275
- Compressor coil disconnected 275
- Compressor overload 275
- Defect of inverter pc board 275
- Faulty compressor 275
- L8 outdoor unit inverter current abnormal 275
- Malfunction decision conditions 275
- Malfunction is detected by current flowing in the power transistor 275
- Method of malfunction detection 275
- Remote controller display 275
- Supposed causes 275
- Troubleshooting 275
- Troubleshooting by indication on the remote controller si34 601a 275
- Troubleshooting output current check 275
- When overload in the compressor is detected inverter secondary current 16 a 275
- Si34 601a troubleshooting by indication on the remote controller 276
- Troubleshooting 276
- Troubleshooting 265 276
- Applicable models rxyq5p 54p 277
- Defect of compressor 277
- Defect of inverter pc board 277
- Failure to open the stop valve 277
- Faulty compressor connection 277
- L9 outdoor unit inverter start up error 277
- Malfunction decision conditions 277
- Method of malfunction detection 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
- Troubleshooting by indication on the remote controller si34 601a 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 601a troubleshooting by indication on the remote controller 278
- Troubleshooting 278
- Troubleshooting 267 278
- Lc 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 601a troubleshooting by indication on the remote controller 280
- Troubleshooting 280
- Troubleshooting 269 280
- Troubleshooting 281
- Troubleshooting by indication on the remote controller si34 601a 281
- Applicable models rxyq5p 54p 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
- P1 outdoor unit inverter over ripple protection 282
- Remote controller display 282
- Si34 601a troubleshooting by indication on the remote controller 282
- Supposed causes 282
- Troubleshooting 282
- Troubleshooting 271 282
- Voltage imbalance between phases 282
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 282
- Applicable models rxyq5p 54p 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
- P4 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
- Troubleshooting by indication on the remote controller si34 601a 283
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 283
- Inverter pcb for compressor 284
- Refer to thermistor resistance temperature characteristics table on p365 284
- Applicable models rxyq5p 54p 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
- Pj 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
- Troubleshooting by indication on the remote controller si34 601a 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 rxyq5p 54p 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
- Refer to pressure sensor pressure voltage characteristics table on p367 286
- Refer to thermistor resistance temperature characteristics table on p365 286
- Remote controller display 286
- Short of gas malfunction is detected by discharge pipe temperature thermistor 286
- Si34 601a troubleshooting by indication on the remote controller 286
- Supposed causes 286
- Troubleshooting 286
- Troubleshooting 275 286
- Uo outdoor unit low pressure drop due to refrigerant shortage or electronic expansion valve failure 286
- Applicable models rxyq5p 54p 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
- 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
- Troubleshooting by indication on the remote controller si34 601a 287
- U1 reverse phase open phase 287
- When a significant phase difference is made between phases 287
- U2 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 601a 289
- Si34 601a troubleshooting by indication on the remote controller 290
- Troubleshooting 290
- Troubleshooting 279 290
- Applicable models rxyq5p 54p 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
- Remote controller display 291
- Supposed causes 291
- Troubleshooting 291
- Troubleshooting by indication on the remote controller si34 601a 291
- U3 outdoor unit check operation not executed 291
- U4 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 601a 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
- 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
- Si34 601a troubleshooting by indication on the remote controller 294
- Supposed causes 294
- Troubleshooting 294
- Troubleshooting 283 294
- U5 indoor unit malfunction of transmission between remote controller and indoor unit 294
- U7 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 601a 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
- 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
- Troubleshooting by indication on the remote controller si34 601a 297
- U8 indoor unit malfunction of transmission between main and sub remote controllers 297
- U9 indoor unit malfunction of transmission between indoor and outdoor units in the same system 298
- Ua 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 601a 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
- Uc address duplication of centralized controller 301
- Ue 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 601a 303
- Si34 601a troubleshooting by indication on the remote controller 304
- Troubleshooting 304
- Troubleshooting 293 304
- Applicable models all models of indoor units rxyq5p 54p 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
- 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
- Troubleshooting by indication on the remote controller si34 601a 305
- Uf system is not set yet 305
- Uh 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 601a 307
- M1 pc board defect 308
- Troubleshooting op central remote controller 308
- M8 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 601a troubleshooting op central remote controller 310
- Troubleshooting 310
- Troubleshooting 299 310
- Ma 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 601a troubleshooting op central remote controller 312
- Troubleshooting 312
- Troubleshooting 301 312
- 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
- Mc address duplication improper setting 313
- Method of malfunction detection 313
- Remote controller display 313
- Supposed causes 313
- Troubleshooting 313
- Troubleshooting op central remote controller si34 601a 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 601a 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 601a 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 601a 319
- Si34 601a 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 601a 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 no 1 check on connector of fan motor power supply cable 1 turn off the power supply measure the resistance between phases of u v w at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected 322
- Check no 2 1 turn off the power supply 2 measure the resistance between vcc and each phase of u v w and gnd and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected furthermore to use a multiple meter for measurement connect the probe of negative pole to vcc and that of positive pole to gnd 322
- Si34 601a troubleshooting op unified on off controller 322
- Troubleshooting 311 322
- Check 3 check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 323
- Troubleshooting 323
- Troubleshooting op unified on off controller si34 601a 323
- Check 4 check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 324
- Si34 601a 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 48 326
- 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
- Rxyq5py1 327
- Rxyq8p 328
- Rxyq10p 12py1 329
- Rxyq14p 16p 18py1 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
- 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
- Outdoor unit 335
- Rxyq5py1 335
- Wiring diagrams for reference 335
- Rxyq8py1 336
- Rxyq10py1 337
- Rxyq12py1 338
- Rxyq14p 16p 18py1 339
- Field wiring 340
- Rxyq5p 8p 10p 12p 14p 16p 18py1 340
- Rxyq20p 22p 24p 26p 28p 30p 32py1 341
- Rxyq34p 36p 38p 40p 42p 44p 46p 48p 50p 52p 54py1 342
- Fxcq20m 25m 32m 63mve 343
- Indoor unit 343
- Fxcq40m 50m 80m 125mve 344
- Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 345
- Fxzq20m 25m 32m 40m 50m7v1b 346
- Fxkq25ma 32ma 40ma 63mave 347
- Fxdq20p 25p 32p fxdq20na 25na 32na 40na 50na 63nave with drain pump 348
- Fxdq20p 25p 32p fxdq20n 25n 32n 40n 50n 63nvet without drain pump 349
- Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 350
- Fxmq40ma 50ma 63ma 80ma 100ma 125mave 351
- Fxmq200ma 250mave 352
- Fxhq32ma 63ma 100mave 353
- Fxaq20ma 25ma 32mave 40ma 50ma 63mave 354
- Fxlq20ma 25ma 32ma 40ma 50ma 63mave fxnq20ma 25ma 32ma 40ma 50ma 63mave 355
- Fxuq71ma 100ma 125mav1 356
- Fxmq125mf 200mf 250mfv1 357
- Bevq71ma 100ma 125mave 358
- List of electrical and functional parts 359
- Outdoor unit 359
- Rxyq5py1 8py1 359
- Rxyq10py1 12py1 360
- Appendix 351 362
- C off 87 c on 362
- Indoor side 362
- Indoor unit 362
- Si34 601a list of electrical and functional parts 362
- Appendix 363
- List of electrical and functional parts si34 601a 363
- Only for fxdq20 63n a ve fxdq20 32pve with drain pump type 363
- Appendix 353 364
- Si34 601a list of electrical and functional parts 364
- Appendix 365
- K ω 25 c 365
- List of electrical and functional parts si34 601a 365
- St8602a 6 φ 6 365
- St8605 6 φ 8 365
- Μ f 400v 365
- Appendix 355 366
- Si34 601a list of electrical and functional parts 366
- Appendix 367
- List of electrical and functional parts si34 601a 367
- Thermal protector 130 c off 83 c on 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
- Adaptor must be procured on site 368
- Appendix 357 368
- Note 1 installation box no is necessary for each adaptor marked 368
- Note installation box for 368
- Operation control system optional accessories 368
- Option list 368
- Option list of controllers 368
- Si34 601a option list 368
- System configuration 368
- Appendix 369
- Building management system 369
- Is a registered trade mark of echelon corporation 369
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 369
- Option list si34 601a 369
- Please refer to option handbook etc for detail 369
- Ppd does not support connection unit series 369
- Appendix 359 370
- Option lists outdoor unit 370
- Order products 370
- Rxyq20 36py1 370
- Rxyq38 54py1 370
- Rxyq5 18py1 370
- Si34 601a option list 370
- Appendix 371
- Option list si34 601a 371
- Order products 371
- Rxyq16 18phy1 371
- Rxyq24 30phy1 371
- Rxyq32 50phy1 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 601a 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
- How to calculate the additional refrigerant to be charged 374
- Pipe size selection 374
- Refrigerant branch kit selection 374
- Si34 601a example of connection r 410a type 374
- A b 2 c 2 d 2 e 2 f 2 g 2 375
- Diameter of above case 375
- Gas liquid 375
- H i j k l m n p 1000 m 375
- Indoor units 1 8 375
- Note 1 375
- Note 2 375
- Note 3 375
- Outdoor unit refnet joint a g 375
- Φ 25 φ 12 375
- Φ 31 φ 15 375
- Φ 31 φ 19 375
- Φ 38 φ 22 375
- 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 601a 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 601a 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 601a 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 07 2007 ak si34 601a 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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