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TROUBLESHOOTING
When issues occur, please check the following information before contacting customer service.
PROBLEM POSSIBLE CAUSES SOLUTION
Poor Cooling
Performance
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 affected heat exchanger.
to instructions on this manual.
The air inlet or outlet of either unit is
blocked.
Turn off the unit, remove the
obstruction, and then turn the unit
back on.
Doors and windows are open. Make sure that all doors and windows
are closed while operating the unit.
Excessive heat is generated by sunlight. Close windows and curtains during
periods of high heat or bright sunshine.
Too many sources of heat in the room
(people, computers, electronics, etc.)
Reduce the amount of heat sources.
Low refrigerant due to a leak or long-
term use.
Check for leaks, re-seal if necessary,
and replenish the refrigerant.
The SILENCE function is activated
(optional function).
The SILENCE function can lower
product performance by reducing
operating frequency. Turn off the
SILENCE function.
The unit is not
working.
Power failure. Wait for the power to be restored.
The unit is unplugged. Plug in the unit.
The fuse is burned out. Replace the fuse.
The batteries in the remote control are
out of power.
Replace the batteries.
3-minute protection has been activated.
Wait three minutes after restarting the unit.
The timer is activated. Cancel the timer.
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.
Incompressible gas or moisture has
entered the system.
Evacuate and recharge the system with
refrigerant.
The compressor is broken. Replace the compressor.
The voltage is too high or too low. Install a manostat to regulate the voltage.
Troubleshooting
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