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3. Troubleshooting
Issue
Possible Causes
Unit does not turn on when
pressing ON/OFF button
The unit has a 3-minute protection feature that prevents the unit from overloading. The
unit cannot be restarted within three minutes of being turned off.
The unit changes from
COOL/HEAT mode to FAN
mode
The unit may change its setting to prevent frost from forming on the unit. Once the
temperature increases, the unit will start operating in the previously selected mode
again.
The set temperature has been reached, at which point the unit turns off the compressor.
The unit will continue operating when the temperature fluctuates 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
outdoor units emit white
mist
When the unit restarts in HEAT mode after defrosting, white mist may be emitted due
to moisture generated from the defrosting process.
The indoor unit makes
noises
A rushing air sound may occur when the louver resets its position.
A squeaking sound may occur after running the unit in HEAT mode due to expansion
and contraction of the unit's plastic parts.
Both the indoor unit and
outdoor unit make noises
Low hissing sound during operation: This is normal and is caused by refrigerant gas
flowing through both indoor and outdoor units.
Low hissing sound when the system starts, has just stopped running, or is defrosting:
This noise is normal and is caused by the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts caused
by temperature changes during operation can cause squeaking noises.
SAFETY PRECAUTIONS
If ANY of the following conditions occurs, turn off your unit immediately!
•
The power cord is damaged or abnormally warm
•
You smell a burning odor
•
The unit emits loud or abnormal sounds
•
A power fuse blows or the circuit breaked frequently trips
•
Water or other objects fall into or out of the unit
DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY!
Common Issues
The following problems are not a malfunction and in most situations will not require repairs.
