MARQ INVERTER AC ERROR CODE
Chandan Kumar •
| Error Code | Problem / Meaning |
|---|---|
| EE | Indoor unit EEPROM (memory) error |
| E0 | Outdoor unit EEPROM (memory) error |
| E1 | Indoor fan motor fault |
| E2 | Indoor fan zero-crossing detection error |
| E3 | Indoor coil temperature sensor fault |
| E4 | Indoor room temperature sensor fault |
| E6 | Communication failure between indoor & outdoor unit |
| E7 | Communication error between main PCB & driver PCB |
| F1 | Compressor starting failure / phase problem |
| F2 | Compressor out-of-step or rotor lock |
| F3 | IPM (Inverter Power Module) fault |
| F4 | Compressor protection (over-temperature / overload) |
| F5 | Outdoor exhaust temperature sensor fault |
| F6 | Outdoor suction temperature sensor fault |
| F7 | Outdoor coil temperature sensor fault |
| F8 | Outdoor ambient temperature sensor fault |
| F9 | Outdoor DC fan motor fault |
