9
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 rotate 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.
• Flap position is occasionally set up individually.
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.
Poor cooling or heating performance The indoor unit is initially designed to control the indoor temperature detected
by the built-in room sensor inside the indoor unit.
Due to indoor unit installation position, however, the built-in sensor may
occasionally sense temperature improperly; for example, temperature
difference between the ceiling and floor, lighting apparatus, electric fan,
windows or waist-high partition walls, etc.
In this case, the unit does not operate properly at the desired temperature.
You may change the use of the temperature sensor inside the indoor unit to
that of the remote controller.
Then the desired room temperature can be controlled properly.
For details, consult your dealer.
F569999_EN.fm Page 9 Tuesday, June 23, 2015 9:24 AM
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