Mitsubishi Electric · MSZ-AY Air Conditioners
In AIR PURIFYING power failure mode recall function, if the indoor POWER lamp blinks three times, it indicates an abnormal electric discharge error. This happens when the voltage between CN1T1 (+) and (GND) on the electronic P.C. board rises above 3V.
Click steps to track your progress.
Release the failure mode recall function by cycling power to the unit or pressing the remote controller's RESET button.
Ensure the front panel is securely closed.
If the problem persists, contact a service technician to investigate abnormal electric discharge.