20
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 can-
not be restarted within three minutes of being turned off.
Check the plug fuse.
Timer is set.
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.
Water drops from the
indoor unit
Dripping water may generate on the surface of the indoor unit when cooling in a relatively high
humidity (RH more than 80%). Adjust the horizontal louver to the maximum air outlet position and
select HIGH fan speed.
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 con-
traction 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 tem-
perature changes during operation can cause squeaking noises.
The outdoor unit makes
noises
The unit will make different sounds based on its current operating mode.
Dust is emitted from
either the indoor or
outdoor unit
The unit may accumulate dust during extended periods of non-use, which will be emitted when
the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.
The unit emits a
bad odor
The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.)
which will be emitted during operations.
The unit’s filters have become moldy and should be cleaned.
The fan of the outdoor
unit does not operate
During operation, the fan speed is controlled to optimize product operation.
Operation is erratic,
unpredictable, or unit is
unresponsive
Interference from cell phone towers and remote boosters may cause the unit to malfunction. In this
case, try the following:
Disconnect the power, then reconnect.
Press ON/OFF button on remote control to restart operation.
TROUBLESHOOTING
SAFETY PRECAUTIONS
If ANY of the following conditions occurs, turn off your unit immediately. Please do not attempt to fix these problems
yourself. Contact an authorized service provider immediately.
The power cord is damaged or abnormally warm
The unit emits burning odor
The unit emits loud or abnormal sounds
A power fuse blows or the circuit breaker frequently trips
Water or other objects fall into or out of the unit
The following problems are not a malfunction and in most situations will not require repairs.
