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Malfunction Stat.
13.4
PROBLEM
Power failure
Wiring failure
Not operating
Transformer failure
Indoor PCB failure
Cross flow fan failure
Loose screws
Indoor abnormal
Worn bearings
noise.
Motor failure
Fan blade failure
Loose screws
Outdoor abnormal
Motor failure
noise.
Compressor failure
Copper tubing
Display board or
indoor PCB failure
Remote control
Battery failure
failure.
Remote control
failure
Lack of refrigerant
Soft starter module
Compressor
failure
protection
Overcurrent protector
failure
Outdoor PCB failure Replace after checked failure.
39
Service manual
CAUSE
Check the power cord.
Check the wiring. Replace the terminates or wires if failure.
Check the input and the output on transformer. Replace if
failure.
Replace after checked failure.
Replace the fan if cracked, out of balance, or partially
missing
Tighten them.
Replace after checked failure.
Replace the motor if knocking sounds continue when
running or loose, or the motor hums or noise appears to be
internal while running.
Replace the fan blade if cracked, out of balance, or partially
missing.
Tighten them.
Replace the motor if knocking sounds continue when
running or loose, or the motor hums or noise appears to be
internal while running.
Replace the compressor if sounds coming from inner of the
compressor.
Remove the cabinet and carefully rearrange tubing not to
contact cabinet, compressor.
Replace the display board. If it is still false, replace the PCB.
Check the voltage of battery. Replace batteries if the voltage
is lower than 2.3V.
Normally, the remote control is not easy to damage. If the
above two methods are not effectual, replace the remote
control.
Check leakage. Recycle the refrigerant. Correct and
recharge if there is any leakage in the refrigerant system.
Check the module and the capacitor connected to the
module. Replace if failure.
Check the resistance of compressor overcurrent protector.
Replace if failure.
REMEDY
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