POWER lamp 12-time flash (2.5-second OFF) — Indoor control system data read error (recall mode)

What does POWER lamp 12-time flash (Recall) mean?

When in failure mode recall function, the POWER lamp flashes twelve times, followed by a 2.5-second OFF period. This indicates that the indoor control system cannot properly read data from the nonvolatile memory of the indoor electronic control P.C. board.

• Indoor electronic control P.C. board malfunction
• Corrupt nonvolatile memory

Click steps to track your progress.

1. 1

   Turn OFF the power supply to the unit for a few minutes, then turn it back ON to reset.

2. 2

   If the error persists, contact an authorized service technician for diagnosis.

3. 3

   This typically requires replacing the indoor electronic control P.C. board.