12
Troubleshooting
Before ask for services, please first check your unit against the following.
If your unit still can't work properly after above mentioned checks, or following problems occur, please stop it immediately
and contact your dealer.
Fuses or circuit breakers often blow out.
Water comes out in cooling/dry operation.
Operation is abnormal or sound is heard.
Air conditioner won't start.
Poor cooling or heating
Is power supply switch turned on?
Power supply switch is not set at ON.
Is city power supply normal? Is leakage current breaker activated?
This is very dangerous, please
disconnect power supply immediately
and contact your dealer.
Are operation control adjusted
correctly as specified?
Is air filter too dirty? Are there any obstacles in inlet or
outlet grill?
Are horizontal louvers at up position
(in heating mode)?
Any doors or windows left open?
Is there any direct sunlight in the room? If there are unexpected heat sources
in the room?
Too many people in the room?
Poor cooling
Cold air blows out (in heating mode). Is air conditioner in standby condition in heating mode?
Power
failure?
Proper
temp
Diagnosis for models
Failure Description Possible CauseLED on PCB flash times
1
indoor ambient temp sensor failure.
Sensor broken down or short circuit
for more than 2min continuously.
indoor coil temp.sensor failure
Sensor broken down or short circuit
for more than 2min continuously.
over voltage/under voltage
power supply over voltage or under
voltage.
outdoor until abnormal
outdoor until abnormal can not
resume.
EEPROM abnormal EEPROM data missing.
indoor drainage failure
Float switch broken down for more
than 10min continuously
.
2
3
4
5
10
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