55
NOTE:
EN
When troubles occur, please check the following points before contacting a repair company.
TROUBLESHOOTING
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
The air filter is dirty
Remove the filter and clean it according 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 redu-
cing 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 dead
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 refrige-
rant 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
Poor heating
performance
The outdoor temperature is extremely
low
Use auxiliary heating device
Cold air is entering through doors and
windows
Make sure that all doors and windows are closed during
use
Low refrigerant due to leak or long-
term use
Check for leaks, re-seal if necessary and top off refrigerant
Indicator lamps
continue flashing
The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or er-
ror codes appear, wait for about 10 minutes. The problem may resolve itself. If not, disconnect the
power, then connect it again. Turn the unit on.
If the problem persists, disconnect the power and contact your nearest customer service center.
Error code appears
in the window dis-
play of indoor unit:
• E0, E1, E2…
• P1, P2, P3…
• F1, F2, F3…
