Left lamp lights up solid — Outdoor control system nonvolatile memory data read error (Outdoor unit does not operate)

What does Left lamp lights up solid (Outdoor control system) mean?

The left lamp of the OPERATION INDICATOR lamp lights up continuously (solid), and the outdoor unit does not operate. This indicates that the inverter P.C. board or the outdoor electronic control P.C. board cannot properly read data in its nonvolatile memory.

• Failure of the inverter P.C. board.
• Failure of the outdoor electronic control P.C. board.
• Corrupted data within the nonvolatile memory of the outdoor control system.

Click steps to track your progress.

1. 1

   Turn OFF the power supply to the unit.

2. 2

   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).

3. 3

   Contact a qualified service technician for diagnosis and potential replacement of the affected P.C. board.