Indoor unit PCB abnormality — Electronic control board issue

What does Indoor unit PCB abnormality mean?

This indicates a malfunction with the main electronic control board (PCB) inside the indoor unit. This board manages the unit's functions.

• Component failure on the indoor unit's PCB
• Power surge affecting the electronics
• Manufacturing defect

Click steps to track your progress.

1. 1

   Turn off the power to the air conditioner at the circuit breaker.

2. 2

   Wait for at least 30 seconds, then restore power.

3. 3

   Check if the error code reappears.

4. 4

   If the error persists, professional service is required as the PCB may need replacement.