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8
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7-4 TROUBLE SHOOTING
• Replace PCB when no trouble after checking the contents of trouble.
CLASSIFICATION
STATE OF TROUBLE
POINT BE CHECKED
CHECKING METHOD
CONTENT
REMEDY
POWER SOURCE
1. All the DISPLAY
1. FREEZER/
FREEZER/REFRIGERATOR
POWER SOURCE is poor
Certify Fuse.
is poor
LED OFF
REFRIGERATOR
DOOR OPEN
Certify outlet Voltage.
2. DISPLAY LED
2. LAMP is dim.
CHECK with the naked.
Applied voltage mistake
Use boosting TRANS.
represents abnormal
3. The connection of
Certify connection of
CONNECTOR connection
Reconnect CONNECTOR.
operation.
CONNECTOR of MAIN PWB. CONNECTOR.
is poor.
TRANS FUSE open.
Replace TRANS.
COOLING is poor
NO COOLING
1. COMPRESSOR operates?
Check the MAIN PCB.
COMPRESSOR lock or
Replace COMPRESSOR.
blocked.
OLP, PTC is poor.
Replace OLP, PTC.
COMPRESSOR RELAY is
Replace MAIN PWB RY1
poor
THE CONNECTING WIRE
Certify the black wire of MAIN
is poor.
PWB CONNECTOR (CON1)
2. Whether refrigerant leaks or
Measure the amount of frost
Refrigerant leakage.
Remedy the leaking part
leaks or not.
sticking on EVA and the
and reaching Refrigerant.
surface temperature of
condenser pipe.
FREEZER
1. Whether FAN MOTOR
Check the MAIN PCB.
FAN MOTOR is poor
Replace FAN MOTOR.
TEMPERATURE is poor
operates or not.
DOOR LINE contact.
Replace DOOR LINER.
CONETTING WIRE is poor.
Certify MOTOR and the
connection of the black wire
of MAIN PWB CONNECTOR.
(CON1)
2. DEFROSTING normal?
Certify the amount of frost
DEFROSTING is poor.
See the DEFROSTING
sticking on EVA.
trouble.
3. SENSOR normal?
Check resistance the
SENSOR RESISTANCE is
Replace SENSOR
SENSOR in the
poor.
Refrigerator
