9TroubleshootingSymptom Cause / ActionIndoor unitNoiseSound like streaming water is heardduring operation or after operation.• Sound of refrigerant liquid flowing inside unit• Sound of drainage water through drain pipeCracking noise is heard during operationor when operation stops. Sound due to temperature changes of partsDischarged air smells during operation.• 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.)Dewdrops accumulate near the air outletduring cooling operation.• Internal moisture is cooled by cool wind and accumulates asdewdrops.Fog occurs during cooling operation.• 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.)Fog occurs during heating operation. • Defrost operation is in process.The fan is rotating for a while even thoughoperation stops.• Fan rotation makes operation smooth.• The fan may rotate to dry the heat exchanger depending onthe setting.Airfl owdirectionAirflow direction changes while operating.Airflow direction cannot be set.Airflow direction cannot be changed.• When air discharge temperature is low during heatingoperation, or during defrost operation, horizontal wind flow ismade automatically.• The flap position may be set individually.(U1 type)The flap moves several times after thedirection is changed.• The flap moves to the standard position once, and then turnsto the set airflow direction.Dust is discharged. • Dust accumulated inside the indoor unit is discharged.At the initial high-speed operation, the fansometimes rotates faster than the settingspeed.(3 to 30 minutes)• This is for operation check in order to confirm whether the fanmotor rotation is within the range of use.Outdoor unitNo operation(When the power is turned on immediately /When operation is stopped and resumedimmediately)• Operation is not activated for the first approx. 3 minutesbecause the compressor protection circuit is activated.Noise occurs during heating operation.• Defrost operation is in process.Steam comes out during heating operation.The fan continues to rotate even after theoperation is stopped using the remotecontroller.• This is for smooth operation.Check before consulting or requesting services.