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Page 11
Troubleshooting
ProblemPossible Causes
Dust is emitted from
the indoor or
outdoor unit
The unit may accumulate dust during extended periods of non-use. The dust
will be emitted when the unit isturned on. To mitigate this, cover 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.) that will be emitted during operation.
The unit’s lters may 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.
Troubleshooting Tips
When troubles occur, please check the following points before contacting a repair company.
ProblemPossible CausesSolution
The unit
is not
working
Power failure Wait for the power to be restored.
The power switch is o Turn on the switch.
The fuse is burned out Replace the fuse.
The remove control batteries are dead
Replace the remote control batteries.
The unit’s 3-minute protection has
been activated
Wait 3 minutes after restarting the unit.
Poor cooling
performance
The temperature setting may be higher
than the ambient room temperature
Lower the temperature setting.
The heat exchanger on the indoor
or outdoor unit is dirty
Clean the aected heat exchanger.
The air filter is dirty
Remove the filter and clean it according
to the instructions.
The air inlet or outlet of either unit
is blocked
Turn the unit o, remove the obstruction,
and turn it back on.
Doors and windows are open
Make sure that all doors and windows are
closed while the unit is operating.
Excessive heat is generated by
sunlight
Close windows and curtains during
periods of high heat or bright sunshine.
Refrigerant is low due to a leak or
long-term use
Check for leaks, re-seal if necessary, and
top o refrigerant.
The unit
starts and
stops
frequently
There’s too much or too little
refrigerant in the system
Check for leaks and recharge the system
with refrigerant.
There is air, incompressible gas, or a
foreign material in the refrigeration
system
Evacuate the system and recharge it with
refrigerant.
The system circuit is blocked
Determine which circuit is blocked and replace
the malfunctioning piece of equipment.
The compressor is broken Replace the compressor.
The voltage is too high or too low Install a manostat to regulate the voltage.
Poor heating
performance
The outdoor temperature is lower
than 44.5° F (7° C)
Check for leaks and recharge the system
with refrigerant.
Cold air is entering through doors
and windows
Make sure that all doors and windows are
closed during use.
Refrigerant is low due to a leak or
long-term use
Check for leaks, re-seal if necessary and
top o refrigerant.
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