Outdoor fan motor error

What does U8 mean?

The outdoor fan motor is abnormal if its rotational frequency is detected as abnormal during operation, specifically 100 rpm or below for 1 second at 30°C or more, or 30 rpm or below/1000 rpm or more for 1 minute continuously. This indicates a problem with the fan motor or its control circuit. Failing to resolve this can lead to insufficient heat exchange, compressor overheating, and overall system performance degradation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Replace the outdoor circuit controller board if the fan motor is confirmed functional and the error persists.