All Error Codes
High Medium Low
| Code | Description | Severity | Quick Action |
|---|---|---|---|
| C5 | Jumper/PCB Malfunction | Medium | Call tech support |
| E1 | High Pressure Protection | Medium | Call tech support |
| E2 | Anti-Freeze Protection | Medium | Call tech support |
| E3 | Low Pressure Protection | Medium | Call tech support |
| E4 | Compressor Discharge Temp Protection | Medium | Call tech support |
| E5 | Over-Current Protection | Medium | Call tech support |
| E6 | Communication Error Indoor/Outdoor | Medium | Check wiring |
| E7 | Mode Conflict | Medium | Call tech support |
| E8 | Anti-High Temperature Protection | Medium | Call tech support |
| E9 | Cold Air Prevention | Medium | Call tech support |
| F0 | Blower Temp Sensor Malfunction | Medium | Call tech support |
| F1 | Indoor Ambient Sensor Failure | Medium | Call tech support |
| F2 | Indoor Coil Sensor Failure | Medium | Call tech support |
| F3 | Outdoor Ambient Sensor Failure | Medium | Call tech support |
| F4 | Outdoor Coil Sensor Failure | Medium | Call tech support |
| F5 | Compressor Discharge Sensor Failure | Medium | Call tech support |
| H1 | Defrost Mode (Normal) | Medium | Call tech support |
| H3 | Compressor Overload Protection | Medium | Call tech support |
| H5 | IPM Protection | Medium | Call tech support |
| H6 | Indoor Fan Motor Malfunction | Medium | Clean air filter |
| P0 | Inverter Module Protection | Medium | Call tech support |
| U7 | Reversing Valve Malfunction | Medium | Call tech support |