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Haier Error Codes
Inverter Mini-Splits & Air Conditioners ยท China
Prefixes: E=System/Sensor, F=Sensor/Protection, P=Protection, H=Status
E-Series (System/Sensor Errors)
| Code | Description | Possible Cause | Action |
|---|---|---|---|
| E0 | EEPROM parameter error | EEPROM data corrupted | Reset power; replace board if persists |
| E1 | Indoor/outdoor communication error | Communication line fault | Check signal wiring and connectors |
| E2 | Zero crossing error | Power supply issue | Check power supply stability |
| E3 | Fan speed error | Indoor fan speed abnormal | Check fan motor and circuit |
| E4 | Room temperature sensor fault | T1 sensor open/short | Check room sensor |
| E5 | Evaporator sensor fault | T2 sensor open/short | Check evaporator sensor |
| E6 | Outdoor sensor fault | Outdoor thermistor failure | Check outdoor coil sensor |
| E7 | Humidity sensor fault | Humidity sensor failure | Check and replace humidity sensor |
| E8 | Address error | Unit address conflict | Check and reset unit addresses |
F-Series (Sensor/Protection Codes)
| Code | Description | Possible Cause | Action |
|---|---|---|---|
| F1 | Ambient temperature sensor fault | Outdoor ambient sensor failure | Check outdoor ambient sensor |
| F2 | Condenser sensor fault | Condenser thermistor failure | Check condenser sensor |
| F3 | Discharge sensor fault | Discharge thermistor failure | Check discharge temperature sensor |
| F4 | Suction sensor fault | Suction line sensor failure | Check suction temperature sensor |
P-Series (Protection Codes)
| Code | Description | Possible Cause | Action |
|---|---|---|---|
| P0 | IPM protection | Inverter module fault | Check IPM module and compressor |
| P1 | Voltage protection | Supply voltage abnormal | Check power supply voltage |
| P2 | Compressor overheating | Compressor top temperature high | Check charge, superheat, airflow |
| P3 | High current protection | System overcurrent | Check compressor and wiring |
| P4 | Inverter drive error | Drive board fault | Check inverter drive board |
| P5 | Fan motor fault | Outdoor DC fan error | Check outdoor fan motor |
No matching error codes found
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Haier Troubleshooting Tips
Before Calling for Service
- Turn off unit, wait 5 minutes, then restart - some errors auto-reset
- Check and clean air filters - many errors caused by restricted airflow
- Verify power supply voltage is within specification
- Check circuit breaker and disconnect switch
- Note the exact error code and when it occurs for technician