18
■ Troubleshooting
If 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 unit
 ●
Symptom Cause
Noise Sound like streaming water during 
operation or after operation
Sound of refrigerant liquid flowing inside unit
 ●
Sound of drainage water through drain pipe
 ●
Cracking noise during operation or 
when operation stops.
Cracking sound due to temperature changes of parts
Odor Discharged air is smelled during 
operation.
Indoor odor components, cigarette odor and cosmetic odor accumurated 
in the air conditioner and its air is discharged. 
Unit inside is dusty. Consult your dealer.
Dewdrop Dewdrop gets accumurated near air 
discharge during operation
Indoor moisture is cooled by cool wind and accumulated by dewdrop.
Fog Fog occurs during operation in 
cooling mode. 
(Places where large amounts of oil 
mist exist at restaurants.)
Cleaning is necessary because unit inside (heat exchanger) is dirty. 
 ●
Consult your dealer as technical engineering is required.
During defrost operation
 ●
Fan is rotating for a while even though operation 
stops.
Fan rotating makes operation smoothly.
 ●
Fan may sometimes rotates because of drying heat exchanger due to 
 ●
settings.
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.
When long-hour operation is made with fixed wind-direction, wind-
 ●
direction is controlled automatically and flap position is occasionally 
changed.
Flap position is occasionally set up individually. During fan rotating, 
 ●
selectable fixed wind-direction is changed to 4 positions. Although 
remote control display is selectable 5-position, wind-direction of 3
rd
 
and 4
th
 positions from horizontal wind flow is equally functioned. (Y2 
type only).
When wind-direction is changed, flap operates 
several times and stops at designated position.
When wind-direction is changed, flap operates after searching for 
standard position.
Dust Dust accumulation inside indoor unit is discharged. 
Outdoor unit
 ●
Symptom Cause
No operation When power is turned ON instantly. Operation is not activated for the first approx. 3 minutes because 
compressor protection circuit is activated. 
When operation is stopped and 
resumed immediately.
Noise Noise often occurs in heating mode. During defrost operation
Steam Steam often occurs in heating mode.
When stopped by remote controller, outdoor unit 
fan is sometimes operating for a while even though 
outdoor compressor is stopped.
Fan rotating makes operation smoothly.
PanaindoorF615696All.indb18PanaindoorF615696All.indb18 2013/02/0810:59:082013/02/0810:59:08