Cooper & Hunter Error Codes
Every Cooper & Hunter error code we have catalogued, with what it means on site — 33 codes in total. In R-Pro, tap any code to get the meaning, likely causes and inspection steps, even with no signal in the plant room.
33 codes
| Code | What it means |
|---|---|
| E0 | Starting voltage exceeds limits |
| E1 | Compressor high pressure protection |
| E2 | Indoor unit freezing protection |
| E3 | Low pressure protection threshold |
| E4 | Injection tube high temp protection |
| E5 | Compressor overcurrent protection |
| E6 | Communication / power cable error |
| E7 | Mode mismatch (indoor vs outdoor) |
| E8 | Evaporator overheating |
| E9 | Cold air supply protection |
| F0 | Discharge sensor malfunction |
| F1 | Evaporator temperature sensor malfunction |
| F2 | Condenser temperature sensor malfunction |
| F3 | Air temperature sensor malfunction |
| F4 | Supercharger temperature sensor malfunction |
| F5 | Compressor discharge tube sensor malfunction |
| F6 | Condenser overload/overheating |
| F7 | Insufficient compressor crankcase lubrication |
| F8 | Compressor overload |
| F9 | Compressor overload / low fan speed |
| FF | Phase missing or phase monitor issue |
| FA | Condenser / evaporator overheating |
| FH | Evaporator freezing / ice on coils |
| H0 | Overheating protection mode |
| H1 | Condenser defrost mode (normal) |
| H2 | Electrostatic filter failure |
| H3 | Compressor temp rise / motor locked |
| H4 | System error (one-time) |
| H5 | IPM inverter unit protection |
| H6 | Sensor defect / fan motor feedback loss |
| H7 | Compressor failure |
| H8 | Drainage system full / tray overflow |
| H9 | Electric heater failure (indoor) |
Official Cooper & Hunter source / manual ↗
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