Haier · Air Conditioning
This indicates the main circuit board (PCB) has reset. This often happens when the system experiences low line voltage conditions.
Click steps to track your progress.
Check the incoming line voltage to ensure it is within the specified operating range.
Verify that the power supply to the unit is stable and not fluctuating.
Inspect electrical connections for looseness.
If low voltage is the persistent issue, consult your power provider.