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7-4. TROUBLE SHOOTING
Replace PCB when no trouble after checking the contents of trouble shooting chart.
CLASSIFICATION
STATE OF TROUBLE
POINT BE CHECKED
STAGECHECKING METHOD CONTENT
REMEDY
POWER SOURCE
is poor
1.All the DISPLAY LED
OFF
2.DISPLAY LED
represents abnormal
operation.
1.FREEZER/
REFRIGERATOR
2.LAMP is dim.
3.The connection of
CONNECTOR of
MAIN PWB.
FREEZER/REFRIGERATOR
DOOR OPEN
CHECK with the naked.
Certify connection of
CONNECTOR.
POWER SOURCE is poor
Applied voltage mistake
CONNECTOR connection
is poor.
TRANS FUSE open.
COOLING is poor
NO COOLING
1.COMPRESSOR
operates?
PRESS TEST KEY on MAIN
PWB once. (forced COOLING)
* If pass less than 7 minutes after
stop of COMP, don't press it
and stand-by.
COMPRESSOR lock or
blocked.
OLP, PTC is poor.
COMPRESSOR RELAY
is poor
THE CONNECTING
WIRE is poor.
Certify Fuse. Certify
outlet Voltage.
Use boosting TRANS.
Reconnect
CONNECTOR.
Replace TRANS.
Replace
COMPRESSOR.
Replace OLP, PTC.
Replace MAIN PWB
RY1
Certify the black wire
of MAIN PWB
CONNECTOR (CON2)
FREEZER
TEMPERATURE is poor
1.Whether FAN MOTOR
operates or not.
PRESS TEST KEY on MAIN
PWB once. (forced COOLING)
FAN MOTOR is poor
DOOR LINEAR contact.
CONNECTING WIRE is
poor.
Replace FAN MOTOR.
Replace DOOR LINER.
Certify MOTOR and
the connection of the
black wire of MAIN
PWB CONNECTOR.
(CON2)
2.DEFROSTING
normal?
3.SENSOR normal?
Certify the amount of frost
sticking on EVA.
Check resistance the SENSOR in
the Refrigerator
DEFROSTING is poor.
SENSOR RESISTANCE
is poor.
See the DEFROSTING
trouble.
Replace SENSOR
2.Whether refrigerant
leaks or not.
Measure the amount of frost
sticking on EVA and the surface
temperature of condenser pipe.
Refrigerant leakage.
Remedy the leaking
part and reaching
Refrigerant.
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