A1 — Indoor unit PCB defect detected

Was bedeutet A1 ?

This indicates a fault with the main circuit board inside the indoor unit. This part controls the unit's functions.

• Defective indoor unit control board
• Electrical surge affecting the PCB

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Turn off the power to the unit at the circuit breaker.

2. 2

   Wait for 5 minutes before restoring power to see if the error resets.

3. 3

   If the error persists, the indoor unit's PCB may require replacement by a technician.