Daikin R32 Sky-Air RZAG-M Service Manual page 4

ESIE17-08 |
2.2.2.18. "L8-00" - Electronic thermal overload ....................................................................................................36
2.2.2.19. "L9-00" - Stall prevention time lag .........................................................................................................36
2.2.2.20. "LC-00" - Transmission system abnormality .......................................................................................... 37
2.2.2.21. "P1-00" - Open phase or power supply voltage imbalance ...................................................................37
2.2.2.22. "P4-00" - Radiating fin temperature sensor abnormality .......................................................................38
2.2.2.23. "PJ-00" - Capacity setting abnormality .................................................................................................. 38
2.2.3. System ......................................................................................................................................................... 39
2.2.3.1. "U0-00" - Refrigerant shortage ................................................................................................................39
2.2.3.2. "U1-00" - Reverse phase or open phase .................................................................................................39
2.2.3.3. "U2-00" - Power supply abnormality or instantaneous power failure .......................................................40
2.2.3.4. "U4-00" - Transmission abnormality between indoor unit and outdoor unit .............................................40
2.2.3.5. "UA-00" - Improper combination of indoor unit and outdoor unit .............................................................41
2.2.3.6. "UF-00" - Wiring and piping mismatch .....................................................................................................41
2.2.4. Others .......................................................................................................................................................... 42
2.3. Symptom based troubleshooting ............................................................................................................ 43
2.3.1. Indoor unit .................................................................................................................................................... 43
2.3.2. Outdoor unit ................................................................................................................................................. 43
2.3.3. System ......................................................................................................................................................... 43
2.3.4. Others .......................................................................................................................................................... 43
2.4. Component checklist ............................................................................................................................... 44
2.4.1. Indoor unit .................................................................................................................................................... 45
2.4.1.1. Fan motor .................................................................................................................................................45
2.4.2. Outdoor unit ................................................................................................................................................. 46
2.4.2.1. 4-way valve ..............................................................................................................................................46
2.4.2.2. Compressor ..............................................................................................................................................48
2.4.2.3. Electronic expansion valve ....................................................................................................................... 50
2.4.2.4. Fan motor .................................................................................................................................................52
2.4.2.5. High pressure switch ................................................................................................................................53
2.4.2.6. Low pressure switch .................................................................................................................................54
2.4.2.7. Main PCB .................................................................................................................................................55
2.4.2.8. Refrigerant thermistors .............................................................................................................................57
2.4.3. System ......................................................................................................................................................... 60
2.4.4. Others .......................................................................................................................................................... 60
2.5. Other capacity range ............................................................................................................................... 60
Part 3. Repair ............................................................................................................................61
3.1. Refrigerant repair procedures ................................................................................................................. 61
3.1.1. Refrigerant piping handling .......................................................................................................................... 61
3.1.2. Recovery procedure ..................................................................................................................................... 61
3.1.2.1. Outdoor unit casing ..................................................................................................................................61
3.1.3. Refrigerant pump down ................................................................................................................................ 63
3.1.3.1. Small outdoor unit .................................................................................................................................... 63
3.1.3.2. Large outdoor unit .................................................................................................................................... 64
3.1.4. Piping repair procedures .............................................................................................................................. 64
3.2. Service tools ........................................................................................................................................... 65
3.3. Unit specific repair procedures ............................................................................................................... 66
3.3.1. Indoor unit .................................................................................................................................................... 66
3.3.2. Outdoor unit ................................................................................................................................................. 67
3.3.2.1. Basic removal ...........................................................................................................................................67
3.3.2.2. Replacing thermistor ................................................................................................................................73
3.3.2.3. Replacing 4-way valve body ....................................................................................................................75
3.3.2.4. Replacing 4-way valve coil ....................................................................................................................... 76
3.3.2.5. Replacing accumulator assembly ............................................................................................................77
3.3.2.6. Replacing compressor .............................................................................................................................77
3.3.2.7. Replacing DC fan motor assembly ...........................................................................................................80
3.3.2.8. Replacing electrical noise filter .................................................................................................................81
3.3.2.9. Replacing expansion valve body ..............................................................................................................83
3.3.2.10. Replacing expansion valve motor ..........................................................................................................85
3.3.2.11. Replacing solenoid valve ....................................................................................................................... 86
3.3.2.12. Replacing solenoid valve coil .................................................................................................................88
Page 4
R32 Sky-Air RZAG-M
15/11/18 | Version 1.1