8TroubleshootingCheck before consulting or requesting services.NoiseIndoor unitOutdoor unitDischarged air smells during operation.Dewdrops accumulate near the air outletduring cooling operation.Fog occurs during cooling operation.Fog occurs during heating operation.The fan is rotating for a while even thoughoperation stops.Dust is discharged.At the initial high-speed operation, the fansometimes rotates faster than the settingspeed.(3 to 30 minutes)No operation(When the power is turned on immediately /When operation is stopped and resumedimmediately)Noise occurs during heating operation.Steam comes out during heating operation.The fan continues to rotate even after theoperation is stopped using the remotecontroller.Sound like streaming water is heardduring operation or after operation.Sound of refrigerant liquid flowing inside unit.Sound of drainage water through drain pipe.Sound due to temperature changes of parts.Indoor odor components, cigarette odor and cosmetic odoraccumulated in the air conditioner and its air is discharged.The unit inside is dirty.(Contact your dealer.)Internal moisture is cooled by cool wind and accumulates asdewdrops.If the air conditioner has been installed at places such asrestaurants where large amounts of oil mist exist, cleaning isnecessary because the unit inside (heat exchanger) is dirty.(Contact your dealer.)Defrost operation is in process.Fan rotation makes operation smooth.The fan may rotate to dry the heat exchanger depending onthe setting.Dust accumulated inside the indoor unit is discharged.This is for operation check in order to confirm whether the fanmotor rotation is within the range of use.Operation is not activated for the first approx. 3 minutesbecause the compressor protection circuit is activated.Defrost operation is in process.This is for smooth operation.Cracking noise is heard during operationor when operation stops.Cause / ActionSymptomPTW17_P07-T11600B (OI).indd 8PTW17_P07-T11600B (OI).indd 8 12/28/2017 2:09:11 PM12/28/2017 2:09:11 PM