48
11. APPENDIX
■
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 accumulated
in the air conditioner and its air is discharged.
Unit inside is dusty. Consult your dealer.
Dewdrop Dewdrop gets accumulated 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.
● Fan may sometimes rotate in internal drying operation mode for a
while.
The indoor unit fan is running and does not stop
when ON/OFF operation button on remote controller
is pressed.
● The refrigerant may be leaking. If R32 refrigerant leakage detection
sensor is connected and the refrigerant leaks, P08 alarm and
inspection mark will be displayed on the remote controller and the fan
will automatically operate. Please ventilate the room without turning
off the earth leakage circuit breaker and contact the service dealer for
assistance.
● Are you using gas equipment (propane, butane, methane, etc.) and
sprays near R32 refrigerant leakage detection sensor? R32 refrigerant
leakage detection sensor could lead to false detection and the fan
may start rotating. Please contact the service dealer for assistance.
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.
01_330200_EU_Eng.indb 48 2021/1/13 10:23:13
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