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Problem
Possible Causes
Dust is emitted from
either the indoor or
outdoor unit
The unit emits a
bad odor
The fan of the
outdoor unit
does not operate
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 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.
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.
Problem
Possible Causes
Solution
The unit
is not
Power failure
The power switch is o
The fuse is burned out
Wait for the power to be restored
Turn on the power
Replace the fuse
working
Remote control batteries are dead
Replace the remote-control batteries
The unit’s 3-minute protection has
been activated
Temperature setting may be higher
Wait three minutes after restarting the unit
than the ambient room temperature
Lower the temperature setting
The heat exchanger on the indoor
or outdoor unit is dirty
Clean the affected heat exchanger
Poor cooling
performance
The unit
starts and
The air filter is dirty
The air inlet or outlet of either unit is
blocked.
Doors and windows are open
Excessive heat is generated by
sunlight
Low refrigerant due to leak or
long-term use
There’s too much or too little
refrigerant in the system
There is air, incompressible gas or
foreign material in the refrigeration
system.
Remove the filter and clean it according
to instructions
Turn the unit off, remove the obstruction
and turn it back on
Make sure that all doors and windows are
closed while operating the unit Close
windows and curtains during periods of
high heat or bright sunshine Check for
leaks, re-seal if necessary and top o
refrigerant
Check for leaks and recharge the system
with refrigerant
Evacuate and recharge the system with
refrigerant
stops
Determine which circuit is blocked and replace
frequently
System circuit is blocked
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
The outdoor temperature is lower
than 7°C (44.5°F)
Poor heating
Cold air is entering through doors
performance
and windows
Low refrigerant due to leak or
long-term use
Check for leaks and recharge the system
with refrigerant
Make sure that all doors and windows are
closed during use
Check for leaks, re-seal if necessary and
top o refrigerant
