air flow is stopped 
frost can be formed on the outdoor heat exchanger. The unit will automatically defrost and the indoor unit will stop blowing air for
During defrost operation, water or vapour may be emitted.
,disconnect from the power supply, and report to an authorised air conditioner contractor in the following situations.
Strong odours are emitted 
Circuit breaker continuously trips off.
Water has dripped into or been splashed onto the unit.
Power leads or connections have been damaged.
disconnect from power supply.