Leakage breaker
Always us a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
Insulation resistance
After installation or after the power source to the unit has been cut for an extended period, the insulation resistance will drop below several MQ due to refrigerant accumulation, in the compressor.
In this case, approx... 4 hours after the power was turned on, make sure that the insulation resistance recovers to the normal value.
By turning on the power, the compressor will be heated and it will make the refrigerant accumulated there evaporated.