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Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Problem
Poor Cooling Performance
The unit is not working
The unit starts and stops frequently
Poor heating performance
Indicator lamps continue flashing
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.
4
114
man_SC54-SC60-SC61 ('21) V3.indd 114
man_SC54-SC60-SC61 ('21) V3.indd 114
Possible Causes
Temperature setting may be higher
than ambient room temperature
The heat exchanger on the indoor
or outdoor unit is dirty
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
Too many sources of heat in the
room (people, computers, electro-
nics, etc.)
Low refrigerant due to leak or
long-term use
SILENCE function is activated (opti-
onal function)
Power failure
The power is turned off
The fuse is burned out
Remote control batteries are dead
The Unit's 3-minute protection has
been activated
Timer is activated
There's too much or too little refri-
gerant in the system
lncompressible gas or moisture has
entered the system.
The compressor is braken
The voltage is too high or too low
The outdoor temperature is extre-
mely low
Cold air is entering through doors
and windows
Low refrigerant due to leak or
long-term use
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.
Solution
Lower the temperature setting
Clean the affected heat exchanger
Remove the filter and clean it ac-
cording to instructions
Turn the unit off, remove the ob-
struction and turn it back on
Make sure that all doors and win-
dows are closed while operating
the unit
Close windows and curtains during
periods of high heat or bright
sunshine
Reduce amount of heat sources
Check for leaks, re-seal if necessary
and top off refrigerant
SILENCE function can lower product
performance by reducing operating
frequency. Turn off SILENCE func-
tion.
Wait for the power to be restored
Turn on the power
Replace the fuse
Replace batteries
Wait three minutes after restarting
the unit
Turn timer off
Check for leaks and recharge the
system with refrigerant.
Evacuate and recharge the system
with refrigerant
Replace the compressor
lnstall a manostat to regulate the
voltage
Use auxiliary heating device
Make sure that all doors and win-
dows are closed during use
Check for leaks, re-seal if necessary
and top off refrigerant
22-11-2021 08:34
22-11-2021 08:34
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