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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