Daikin FTXTA30AW Service Manual page 4

ESIE17-19C |
2.2.2.18. "J6-00" – Outdoor heat exchanger thermistor abnormality ....................................................................36
2.2.2.19. "L1-00" – Main PCB abnormality ............................................................................................................36
2.2.2.20. "L3-00" – Switch box temperature abnormality ......................................................................................37
2.2.2.21. "L4-00" – Inverter radiating fin temperature abnormality ........................................................................38
2.2.2.22. "L5-00" – Inverter instantaneous overcurrent (AC output) ..................................................................... 38
2.2.2.23. "L8-00" – Electronic thermal overload ....................................................................................................39
2.2.2.24. "L9-00" – Stall prevention time lag .........................................................................................................40
2.2.2.25. "LC-00" – Transmission system abnormality .......................................................................................... 40
2.2.2.26. "P1-00" – Open phase or power supply voltage imbalance ...................................................................41
2.2.2.27. "P3-00" – Malfunction of thermistor in electrical box ..............................................................................41
2.2.2.28. "P4-00" – Radiating fin temperature sensor abnormality .......................................................................42
2.2.2.29. "PJ-00" – Capacity setting abnormality .................................................................................................. 42
2.2.3. System ......................................................................................................................................................... 43
2.2.3.1. "U0-00" – Refrigerant shortage ................................................................................................................43
2.2.3.2. "U2-00" – Power supply abnormality or instantaneous power failure .......................................................43
2.2.3.3. "U4-00" – Transmission abnormality between indoor unit and outdoor unit .............................................44
2.2.3.4. "UA-00" – Improper combination of indoor unit and outdoor unit .............................................................45
2.2.4. Others .......................................................................................................................................................... 46
2.3. Symptom based troubleshooting ............................................................................................................ 47
2.3.1. Indoor unit .................................................................................................................................................... 47
2.3.2. Outdoor unit ................................................................................................................................................. 47
2.3.3. System ......................................................................................................................................................... 47
2.3.4. Others .......................................................................................................................................................... 47
2.4. Component checklist ............................................................................................................................... 48
2.4.1. Indoor unit .................................................................................................................................................... 48
2.4.2. Outdoor unit ................................................................................................................................................. 49
2.4.2.1. 4-way valve ..............................................................................................................................................49
2.4.2.2. Compressor ..............................................................................................................................................51
2.4.2.3. Electronic expansion valve ....................................................................................................................... 53
2.4.2.4. Fan motor .................................................................................................................................................55
2.4.2.5. Main PCB .................................................................................................................................................56
2.4.2.6. High pressure switch ................................................................................................................................58
2.4.2.7. Muffler ......................................................................................................................................................59
2.4.2.8. Refrigerant thermistors .............................................................................................................................60
2.4.3. System ......................................................................................................................................................... 63
2.4.4. Others .......................................................................................................................................................... 63
2.5. Other capacity range ............................................................................................................................... 64
Part 3. Repair ............................................................................................................................65
3.1. Refrigerant repair procedures ................................................................................................................. 65
3.1.1. Refrigerant piping handling .......................................................................................................................... 65
3.1.2. Recovery procedure ..................................................................................................................................... 65
3.1.2.1. Outdoor unit casing ..................................................................................................................................65
3.1.3. Refrigerant pump down ................................................................................................................................ 67
3.1.3.1. Small outdoor unit .................................................................................................................................... 67
3.1.4. Piping repair procedures .............................................................................................................................. 68
3.2. Service tools ........................................................................................................................................... 69
3.3. Unit specific repair procedures ............................................................................................................... 70
3.3.1. Indoor unit .................................................................................................................................................... 70
3.3.1.1. Replacing streamer unit ...........................................................................................................................70
3.3.1.2. Replacing humidity sensor ....................................................................................................................... 72
3.3.1.3. Replacing R32 sensor (only for FVXM-F model) .....................................................................................74
3.3.2. Outdoor unit ................................................................................................................................................. 76
3.3.2.1. Basic removal ...........................................................................................................................................76
3.3.2.2. Removing switch box ...............................................................................................................................79
3.3.2.3. Replacing 4-way valve body ....................................................................................................................81
3.3.2.4. Replacing 4-way valve coil ....................................................................................................................... 83
3.3.2.5. Replacing compressor .............................................................................................................................84
3.3.2.6. Replacing DC fan motor assembly ...........................................................................................................87
3.3.2.7. Replacing expansion valve body ..............................................................................................................89
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Optimized Heating 4
19/08/19 | Version 1.1