1
1-11-108
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 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.
At the initial high-speed operation, the fan may
sometimes rotate faster (for 3 to 30 minutes) than
the setting speed.
This is for operation check in order to confirm whether the fan motor
rotation is within use range.
Check Before Requiring Services
Symptom Cause Remedy
Air conditioner does not run
at all although power is turned
on.
Power failure or after power failure Press ON/OFF operation button on remote
controller again.
Operation button is turned off.
Switch on power if breaker is turned off.
If breaker has been tripped, consult your dealer
without turning it on.
Fuse blow out. If blown out, consult your dealer.
Poor cooling or heating
performance.
Air intake or air discharge port of indoor
and outdoor units is clogged with dust or
obstacles.
Remove dust or obstruction.
Fan speed switch is set to “Low”. Change to “Medium” or “High”.
Improper temperature settings Refer to “
(on page 1-11-109).
Tips for Energy Saving”
Room is exposed to direct sunlight in
cooling mode.
Doors and /or windows are open.
Air filter is clogged. Refer to “ Care and Cleaning” (on page 1-11-107).
Too much heat sources in room in
cooling mode.
Use minimum heat sources and in a short time.
Too many people in room in cooling
mode.
Reduce temperature settings or change to “Medium”
or “High”.
If your air conditioner still does not work properly although you checked the points as described above, first stop the operation
and turn off the power switch. Then contact your dealer and report the serial number and symptom. Never repair your air
conditioner by yourself since it is very dangerous for you to do so.
SM830266-00_大洋州向けR32シングルTD&SM.indb 108 18/03/29 10:21:19
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