Mitsubishi Heavy Industries · R410A Systems
The inverter has detected an overvoltage condition. This means the incoming electrical voltage to the inverter is too high, which can damage components.
Click steps to track your progress.
Turn off the air conditioning unit immediately at the circuit breaker.
Do not attempt to restart the unit until a qualified electrician has checked the main power supply voltage.
Contact a certified electrician to verify the voltage supply to the unit.
If the voltage is stable, a technician may need to inspect the inverter board.