Upper lamp blinking four times — Indoor control system memory error

¿Qué significa Upper lamp blinks 4-time blink 2.5-second OFF ?

The system cannot properly read data from the non-volatile memory of the indoor electronic control P.C. board. The unit will not operate.

• Corrupted data in indoor control board memory
• Faulty indoor electronic control P.C. board

Haga clic en los pasos para seguir su progreso.

1. 1

   Replace the indoor electronic control P.C. board.

2. 2

   Ensure the unit's power supply is stable.