Upper OPERATION INDICATOR lamp blinks 4 times — Indoor unit control system trouble

What does Upper lamp 4-time blink mean?

The upper lamp on the indoor unit blinks 4 times. This indicates a problem with the indoor unit's control system, possibly related to its electronic control board.

• Malfunction of the indoor unit control system
• Problem with the indoor electronic control P.C. board

Click steps to track your progress.

1. 1

   Try resetting the unit by turning off the main power supply for a few minutes and then turning it back on.

2. 2

   If the error persists, the indoor electronic control P.C. board may need replacement.

3. 3

   Contact a service technician for further assistance and repair.