Mitsubishi Electric · Air Conditioners
The indoor unit's upper lamp blinks 11 times and the outdoor P.C. board LED blinks 8 times. This indicates that the bus-bar voltage of the inverter cannot be detected normally.
Click steps to track your progress.
Check for any recent power fluctuations or outages in your area.
Power cycle the air conditioner by turning off the main circuit breaker for 30 seconds, then turning it back on.
If the problem persists, a qualified technician should check the inverter/compressor.