108
Troubleshooting
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
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 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 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
refrigerant in the system
Check for leaks and recharge the
system with refrigerant.
lncompressible gas or moisture has
entered the system.
Evacuate and recharge the system
with refrigerant
The compressor is braken
Replace the compressor
The voltage is too high or too low
lnstall a manostat to regulate the
voltage
Poor heating performance
The outdoor temperature is extre-
mely low
Use auxiliary heating device
Cold air is entering through doors
and windows
Make sure that all doors and win-
dows 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. lf the indicator
lamps continue to flash or error codes appear, wait for about 10 minutes.
The problem may resolve itself.
lf not, disconnect the power, then connect it again. Turn the unit on.
lf the problem persists, disconnect the power and contact your nearest
customer service center.
Error code appears and begins with
the letters as the following in
the window display of indoor unit:
E(x), P(x), F(x)
EH(xx), EL(xx), EC(xx)
PH(xx), PL(xx), PC(xx)
NOTE:
lf your problem persists after performing the checks and diagnostics above, turn off your unit
immediately and contact an authorized service center.
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