Sinclair 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 | High pressure protection or system high-pressure fault. | All models | Details |
| E2 | System low-pressure fault. | All models | Details |
| E3 | System low-pressure protection (severe or repeated low-pressure event). | All models | Details |
| E5 | Current protection on compressor or fan circuit. | All models | Details |
| E6 | Communication error between indoor and outdoor units. | All models | Details |
| F1 | Indoor air (room) temperature sensor fault. | All models | Details |
| F2 | Indoor coil temperature sensor fault. | All models | Details |
| F3 | Outdoor ambient temperature sensor fault. | All models | Details |
| F4 | Outdoor coil temperature sensor fault. | All models | Details |
| F5 | Discharge line temperature sensor fault. | All models | Details |