Mitsubishi Electric · MSZ-AY Air Conditioners
When the AIR PURIFYING lamp continuously blinks, it indicates that the AIR PURIFYING power control circuit on the indoor electronic control P.C. board is malfunctioning. As a result, the air purifying operation will not be conducted.
Click steps to track your progress.
Ensure the front panel of the unit is securely closed, as opening it will cut the AIR PURIFYING power.
Turn off the unit's power supply, wait a few minutes, then turn it back on.
Contact a service technician to check the AIR PURIFYING power control circuit and the indoor electronic control P.C. board.