All Error Codes
High Medium Low
| Code | Description | Severity | Quick Action |
|---|---|---|---|
| A1 | Indoor PCB Defective | Medium | Call tech support |
| A3 | Drain Level System Fault | Medium | Call tech support |
| A5 | Freeze-Up/Overheat Protection | Medium | Call tech support |
| A6 | Fan Motor Lock/Overcurrent | Medium | Clean air filter |
| C4 | Heat Exchanger Thermistor Fault | Medium | Call tech support |
| C9 | Suction Air Thermistor Fault | Medium | Call tech support |
| E1 | Outdoor PCB Defective | Medium | Call tech support |
| E3 | High Pressure Switch Activated | Medium | Call tech support |
| E4 | Low Pressure Switch Activated | Medium | Call tech support |
| E5 | Compressor Motor Lock | Medium | Call tech support |
| E6 | Standard Compressor Motor | Medium | Call tech support |
| E7 | Outdoor Fan Motor Lock | Medium | Clean air filter |
| F3 | Discharge Pipe Temp High | Medium | Call tech support |
| F6 | Refrigerant Overcharge | Medium | Call tech support |
| H6 | Position Sensor Fault | Medium | Call tech support |
| U4 | Communication Error Indoor/Outdoor | Medium | Check wiring |