Left lamp blinks 7-time 2.5-second OFF — Outdoor control system nonvolatile memory data read error

What does Left lamp blinks 7-time 2.5-second OFF mean?

The left lamp of the OPERATION INDICATOR blinks seven times, followed by a 2.5-second pause. 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

   Contact a qualified service technician for diagnosis.

3. 3

   The manual recommends replacing the inverter P.C. board or the outdoor electronic control P.C. board.