Daikin FTXN-LV - Error Code L5: IPM;IGBT Error; Error Code U0: Insufficient Gas

TS13-01 Troubleshooting manual 45
L5
Description
IPM error/IGBT error
Supposed Cause
- Over current due to defective power transistor
- Over current due to wrong internal wiring
- Over current due to abnormal supply voltage
- Over current due to defective PCB
- Error detection due to defective PCB
- Over- current due to closed stop valve
- Over current due to compressor failure
- Over current due to poor installation condition
- Connection between main board and IPM board is not properly connect
Troubleshooting
U0
Description
Insufficient gas
Supposed Cause
- Refrigerant shortage
- Refrigerant leakage
- Stop valve closed
- EXV defective
- Discharge pipe thermistor defect
- Indoor and outdoor unit coil thermistor not in actual location or defect