Service manual

45
Model No: AC-S10CK_S10HK
Version 1.0
SYMPTON PROBABLE CAUSE CORRECTIVE ACTION
The refrigeration
system does not
function correctly
Check for leakage or restriction
with ammeter, pressure gauge
or surface thermometer
Repair refrigeration system and
charge refrigerant if necessary
something wrong with power
P.C.B
Replace control P.C.B
No cooling or
heating, only
indoor fan
operates
Outdoor fan motor faulty or other
fault caused compressor OLP
trips
Remove obstruction or other fault
Compressor OLP trips because
of low voltage, high
temperature,R22 leakage, little
outdoor air circulation and etc
Check the problems and try
again one hour later
Running capacitor faulty Replace running capacitor
No cooling or
heating, indoor and
outdoor fan
operate
Compressor is broken Replace compressor
Water accumulates
and overflows from
indoor unit
Drainage hose or port of
drainage pan clogged
Remove clogged dirt
Power supply failure Repair power supply
The secondary voltage of
transformer is approximately
17VAC
Replace control P.C.B
The air conditioner
does not function
at all with remote
controller or AUX
switch button on
the indoor unit
The secondary voltage of
transformer is not approximately
17VAC
Replace transformer
5. Checking procedure of control circuit
Note: Do not check indoor and outdoor units at the same time. Be sure to check them
one by one.
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