Left lamp flashes 7 times — Outdoor control system error

What does 7 (7-time flash) mean?

The left Operation Indicator lamp flashes seven times, followed by a 2.5-second off period. This indicates that data in the nonvolatile memory of the outdoor unit's inverter P.C. board or outdoor electronic control P.C. board cannot be properly read, signaling an internal control system issue.

• Corruption or inability to read data from the inverter P.C. board's nonvolatile memory.
• Corruption or inability to read data from the outdoor electronic control P.C. board's nonvolatile memory.

Click steps to track your progress.

1. 1

   Turn off the main power supply to the unit and wait a few minutes before turning it back on.

2. 2

   If the error persists, there is likely an issue with the outdoor unit's control boards.

3. 3

   Refer to the outdoor unit service manual for diagnosis and potential replacement of the inverter P.C. board or outdoor electronic control P.C. board by a qualified technician.