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48
When troubles occur, please check the following points before contacting a repair company.
PROBLEM POSSIBLE CAUSES SOLUTION
Poor Cooling
Performance
Temperature setting may be higher than
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
The air inlet or outlet of either unit is
blocked
Turn the unit off, remove the obstruction
and turn it 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 amount of heat sources
Low refrigerant due to leak or long-term
use
Check for leaks, re-seal if necessary and
top off refrigerant
SILENCE function is activated (optional
function)
SILENCE function can lower product
performance by reducing operating
frequency. Turn off SILENCE function.
The unit is not
working
Power failure Wait for the power to be restored
The power is turned off Turn on the power
The fuse is burned out Replace the fuse
Remote control batteries are out of power Replace batteries
The Unit’s 3-minute protection has been
activated
Wait three minutes after restarting the
unit
Timer is activated Turn timer off
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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