OPERATION INDICATOR lamp solid ON — Outdoor control system error (outdoor unit not operating)

What does OPERATION INDICATOR solid mean?

The indoor unit's upper lamp lights up continuously (solid), and the outdoor unit does not operate. This indicates that data in the nonvolatile memory of the inverter P.C. board or the outdoor electronic control P.C. board cannot be properly read.

• Corrupted data on the inverter P.C. board
• Corrupted data on the outdoor electronic control P.C. board
• Malfunction of the inverter P.C. board or outdoor electronic control P.C. board

Click steps to track your progress.

1. 1

   Check the blinking pattern of the LED on the inverter P.C. board or the outdoor electronic control P.C. board (refer to outdoor unit service manual).

2. 2

   Turn OFF the power supply to the unit at the circuit breaker for at least 30 seconds, then turn it back on.

3. 3

   Contact a qualified technician for further diagnosis and potential replacement of control boards.