Fujitsu air conditioner error codes
Fujitsu Halcyon mini-splits show a two-digit code such as 11, 62 or A1 on a wired remote. Without one, the operation lamp blinks the first digit and the timer lamp blinks the second, while the economy lamp flashes. Some faults clear with a power reset at the breaker; outdoor unit and refrigerant faults need a licensed technician.
| Code | What it means | Fix |
|---|---|---|
| 11also E11 | Indoor and outdoor units not communicating | Moderate DIY |
| 12also E12 | Wired remote not communicating with indoor unit | Moderate DIY |
| 41also E41 | Indoor room temperature sensor fault | Technician job |
| 42also E42 | Indoor coil (pipe) temperature sensor fault | Technician job |
| 51also E51 | Indoor fan motor fault | Moderate DIY |
| 53also E53 | Drain pump fault (cassette and ducted units) | Moderate DIY |
| 62also E62 | Outdoor unit main board error | Technician job |
| 63also E63 | Inverter error | Technician job |
| 97also E97 | Outdoor fan motor fault | Moderate DIY |
| 99also E99 | Reversing (4-way) valve error | Technician job |
| A1also EA1 | Discharge temperature too high | Technician job |