77
Troubleshooting
SAFETY PRECAUTIONS
If ANY of the following conditions occurs, immediately turn off the air conditioner!
• The power cord is damaged or abnormally
warm.
• Burning smell.
• The unit emits loud or abnormal sounds.
• A power fuse blows or the circuit breaker
trips frequently.
• Water or other objects fall into or out of the
unit.
DO NOT ATTEMPT TO FIX THESE YOURSELF, CONTACT AUTHORIZED SERVICE PROVIDER IM-
MEDIATELY!
Common problems
The following problems are not a malfunction and in most cases they will not require a ser-
vice call.
Problem
Possible cause
Unit does not turn on
when pressing ON/OFF
button
• The unit has a 3-minute protection feature that prevents it
from overloading. The unit should not be restarted within tree
minutes of being turned off.
The unit changes from
COOL/HEAT (on some
models) mode to FAN
mode.
• The unit may change its setting to prevent frost from forming
on it. Once the temperature increases, the unit will start oper-
ating in the previously selected mode again.
• The set temperature has been reached, at which point the
unit turns the compressor off. The unit will continue operating
when the temperature changes again.
The indoor unit emits
white mist.
• In humid regions, a large temperature difference between the
room's air and the conditioned air can cause white mist.
Both the indoor and out-
door units emit white
mist.
• When the unit restarts in HEAT mode after defrosting, white
mist may be emitted due to moisture generated from the de-
frosting process.
The indoor unit is noisy.
• A rushing air sound may occur when the louver resets its po-
sition.
• A squeaking sound may be heard after running the unit in
HEAT mode, due to expansion and contraction of the unit's
plastic parts.
Summary of Contents for MGI09CAB3
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