9TROUBLESHOOTINGIf your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly,contact your dealer or a service center.INDOOR UNITSymptom CauseNoise Sound like streaming water duringoperation or after operation• Sound of refrigerant liquid flowing inside unit• Sound of drainage water through drain pipeCracking noise during operation orwhen operation stops.Cracking sound due to temperature changes of partsOdor Discharged air is smelled duringoperation.Indoor odor components, cigarette odor and cosmetic odor accumurated inthe air conditioner and its air is discharged.Unit inside is dusty. Consult your dealer.Dewdrop Dewdrop gets accumurated near airdischarge during operationIndoor moisture is cooled by cool wind and accumulated by dewdrop.Fog Fog occurs during operation in coolingmode.(Places where large amounts of oilmist exist at restaurants.)• Cleaning is necessary because unit inside (heat exchanger) is dirty.Consult your dealer as technical engineering is required.• During defrost operationFan is rotating for a while even though operationstops.• Fan rotating makes operation smoothly.• Fan may sometimes rotate because of drying heat exchanger due tosettings.Wind-direction changes while operating.Wind-direction setting cannot be made.Wind-direction cannot be changed.• When air discharge temperature is low or during defrost operation,horizontal wind flow is made automatically.• Flap position is occasionally set up individually.When wind-direction is changed, flap operatesseveral times and stops at designated position.When wind-direction is changed, flap operates after searching for standardposition.Dust Dust accumulation inside indoor unit is discharged.At the initial high-speed operation, the fan maysometimes rotate faster (for 3 to 30 minutes) thanthe setting speed.This is for operation check in order to confirm whether the fan motor rotation iswithin use range.