Panasonic S73MZ1H4A - Manual (Page 10)

10
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
OUTDOOR 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 rotates because of drying heat exchanger due to
settings.
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.
Symptom Cause
No
operation When power is turned ON instantly. Operation is not acticated 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.
F569569_EN.fm Page 10 Friday, March 14, 2014 8:44 AM