DB98-26492A(1)-E-1.indd 20Operating RecommendationsE - 20When you use your air conditioner, it is recommended that you read the following:Topic RecommendationCommon Air conditioner should be used only in the single closed room.Effective air conditioner operation can be guarantee if all windowsand doorsin the room are closed.Warm air circulationFrostHigh indoor andoutdoor temperaturesPower failureProtection mechanismHeating capacity The heat pump inside the air conditioner absorbs heat from outside airand brings it indoors. If the temperature of the outside air drops, theair conditioner heats less. If the room is not warm enough, use anadditional heating appliance.The air conditioner circulates warm air to heat your room. It will take someto warm the air inyour room entirely after the air conditioner turns on.Therefore, turn the air conditioner on in advance.When you select the Heat mode, frost may from in the outdoor unit dueto low temperature and high humidity.If this happens:The heating operation is stopped.The air conditioner defrost automatically for about 7 minutes.After about 7 minutes, the air conditioner starts operating again normally.If the both the indoor and outdoor temperatures are high when you selectthe Heat mode, the fan and the compressor of the outdoor unit may stopperiodically. This is normal; wait until the air conditioner turns on again.If a power failure occurs when the air conditioner is operating, the airconditioner will turn off. When the power returns, the air conditioner willstart up again automatically.When the air conditioner is started immidiately after being plugged in orstopped, the normal operation starts up after 3 minutes for reason of protection.