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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.
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.
CAUTION
Certain metal edges and the condenser fins are sharp
and may cause injury if handled improperly; special care
should be taken when you clean these parts.
Periodically check the outdoor unit to see if the air outlet
or air intake is clogged with dirt or soot.
The internal coil and other components must also be
cleaned periodically. Consult your dealer or service
center.
Care: After a prolonged idle period
Check the indoor and outdoor unit air intakes and outlets for
blockage; if there is a blockage, remove it.
Care: Before a prolonged idle period
Operate the fan for half a day to dry out the inside.
Disconnect the power supply and also turn off the circuit
breaker.
Clean the air filter and replace it in its original position.
Outdoor unit internal components must be checked and
cleaned periodically. Contact your local dealer for this
service.
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