POWER lamp flashes 4 times — Indoor control system data read error

What does POWER lamp 4-time flash mean?

The indoor fan motor turns OFF. This indicates that the system cannot properly read data from the nonvolatile memory of the indoor electronic control P.C. board, which controls the indoor unit's functions.

• Problem with the nonvolatile memory on the indoor electronic control P.C. board.
• Defective indoor electronic control P.C. board.

Click steps to track your progress.

1. 1

   Turn OFF the main power supply to the air conditioner, wait 30 seconds, then turn it back ON.

2. 2

   Attempt to restart the unit using the remote controller.

3. 3

   Ensure the remote controller batteries are not weak; replace if necessary.

4. 4

   If the error persists, contact a qualified service technician. They may need to inspect or replace the indoor electronic control P.C. board.

5. 5

   Verify the power supply to the unit is stable.