LG LRSC26980TT Service Manual - Page 87

TROUBLE DIAGNOSIS - 87 - Problems Bad cooling Symptom Wrong Refrigerator temperature. Causes Checks Measures Remarks Defective Step Motor Damper. Check Step Motor damper motor and reed switch and lead wire are cut. Check Step Motor damper part. Check Step Motor damper Motor driving relay in PCB. Check if Step Motor damper motor and reed switch lead wire are cut with a tester. Refer to Step Motor damper in parts repair guide. Refer to Step Motor damper in parts repair guide. Foreign materials in Step Check Step Motor damper Motor damper baffles. baffle visually. Ice formation on Check if Step Motor damper Step Motor damper Heater wire is cut with a baffles. tester. Reconnect lead wire. Replace Step Motor damper or refrigerator control box Assembly. Replace relay or Refer to single PCB. motor damper driving circuits in circuit explanation. Remove foreign materials. Replace Step Motor damper or refrigerator control Box Assembly. Defective refrigerator Defective refrigerator sensor sensor parts. Refrigerator sensor is substituted for other sensor. Defective refrigerator sensor assembly condition. Check the resistance of Replace refrigerator Refer to sensor refrigerator sensor with a tester. sensor. resistance characteristic table in circuit explanation. Check the sensor color in the Repair main PCB circuit. (main PCB sensor sensor housing. housing.) Check if refrigerator sensor Fix again the is not fixed at cover sensor but refrigerator sensor. inner case visually.