14
owner’s manual
7. TROUBLE SHOOTING
7.1 Troubles and causes of air conditioner
Solution
Clean the heat exchanger.
Clean the air filter.
Eliminate all dirt.
Close doors and windows.
Use curtains in order to shelter from
sunshine.
Reduce heat source.
AC cooling capacity reduces (normal).
Check leakage and rightly recharge
refrigerant.
Symptoms
Causes
Unit does not start
Air flows normally but does
not cool
Units start or stop frequently
Low cooling effect
Low heating effect
Power failure.
Power switch is off.
Fuse of power switch may have burned.
Batteries of remote controller exhausted
or other problem of controller.
Temperature is not set correctly.
Be
in
3
minutes
protection
of
compressor.
Refrigerant is too little or too much.
Air or no concreting gas in the
refrigerating circuit.
Compressor is malfunction.
Voltage is too high or too low.
System circuit is blocked.
Outdoor unit and indoor unit heat
exchanger is dirty.
The air filter is dirty.
Inlet/outlet of indoor/outdoor units is
blocked.
Doors and windows are open
Direct sunlight.
Too much heat resource.
Outdoor temp. is too high.
Leakage of refrigerant or lack of
refrigerant.
Wait for the comeback of power.
Switch on the power.
Replace the fuse.
Replace the batteries or check the
controller.
Set the temperature properly.
Wait.
Check leakage, and rightly recharge
refrigerant.
Vacuum and recharge refrigerant.
Maintenance or change compressor.
Install manostat.
Find reasons and solution.
Use heating device.
Close doors and windows.
Check leakage and rightly recharge
refrigerant.
Outdoor temperature is lower than 7°C.
Doors and windows not completely
closed.
Leakage of refrigerant or lack of
refrigerant.
Table 7-1
If one of the following malfunctions occur, stop operation, shut off the power, and contact with your dealer.
Remote controller receives malfunction or the button does not work well.
A safety device such as a fuse, a breaker frequently actuates.
Obstacles and water enter the unit.
Water leaks from indoor unit.
Other malfunctions.
If the system does not properly operate except the above mentioned cases or the above mentioned malfunctions is
evident, investigate the system according to the following procedures.
(See in Table 7-1)
