Alliance air conditioner error codes
Displayed on the indoor unit or remote when a fault is detected. Always isolate power before inspecting a unit — repairs belong to a qualified technician.
| Code | Meaning | Applies to | |
|---|---|---|---|
| E1 | Communication error between indoor and outdoor units (Midea-platform logic). | All models | Details |
| E2 | Indoor temperature or evaporator sensor error. | All models | Details |
| E3 | Refrigerant leak or low capacity protection. | All models | Details |
| E4 | Compressor or discharge temperature error. | All models | Details |
| E5 | Fan motor fault. | All models | Details |
| EC | Refrigerant leakage alarm. | All models | Details |
| F0 | Low refrigerant protection. | All models | Details |
| F1 | Indoor ambient temperature sensor fault. | All models | Details |
| F2 | Indoor evaporator temperature sensor fault. | All models | Details |
| F3 | Outdoor ambient temperature sensor fault. | All models | Details |