Problems Symptom Causes Checks Measures Remarks
Bad cooling Wrong Defective AC Damper. Check AC damper Check if AC damper motor and Reconnect lead
Refrigerator motor and reed switch reed switch lead wire are wire.
temperature. and lead wire are cut. cut with a tester.
Check AC damper Refer to AC damper in parts Replace AC damper
part. repair guide. or refrigerator control
box Assembly.
Check AC damper Refer to AC damper in parts Replace relay or Refer to single
Motor driving relay in repair guide. PCB. motor damper
PCB. driving circuits
in circuit
explanation.
Foreign materials in AC Check AC damper baffle Remove foreign
damper baffles visually. materials.
Ice formation on AC Check if AC damper Heater Replace AC damper
damper baffles wire is cut with a tester. or refrigerator control
Box Assembly.
Defective refrigerator Defective refrigerator Check the resistance of Replace refrigerator Refer to sensor
sensor sensor parts. refrigerator sensor with a tester. sensor. resistance
characteristic
table in circuit
explanation.
Refrigerator sensor is Check the sensor color in the Repair main PCB
substituted for other circuit. (main PCB sensor sensor housing.
sensor. housing.)
Defective refrigerator Check if refrigerator sensor Fix again the
sensor assembly is not fixed at cover sensor but refrigerator sensor.
condition. inner case visually.
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