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Customer Questions and Answers for Defrost Sensor Assembly by Lg

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Manufacturer Part
4.89 (64)
By: Lg
Part Number: OEM13315440
Manufacturer Part Number: 6615JB2005H

The Defrost Sensor Assembly is an OEM part for LG refrigerators. This integral component plays a key role in monitoring the temperature within the refrigerator's freezer section, particularly during the defrost cycle. It ensures that the defrost system activates and deactivates at appropriate temperatures to maintain efficient operation and prevent frost buildup. 

Symptoms of a faulty defrost sensor assembly include:

  • Excessive frost or ice accumulation in the freezer
  • Refrigerator or freezer section experiencing temperature fluctuations
  • Defrost cycle not running or running too frequently

Causes of defrost sensor failure often involve damage from moisture or ice, electrical faults, or degradation over time, which can lead to inaccurate temperature readings and improper defrost cycle regulation.

This OEM LG part is also compatible with Sears/Kenmore.

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Questions & Answers

For Lg Defrost Sensor Assembly (Part Number: OEM13315440)

1 Answer

Tom, The ER DH is an indicator that the defrost heater or the defrost controller have failed on the unit. You will want to do a continuity test on the evaporator defrost heater 5300JK1005D to make sure that it is good and if it checks ok then the defrost controller 6615JB2005H is faulty and would need to be replaced.

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1 Answer

Nacole, You will want to check the defrost heater for continuity. The ER DH is a defrost heater error. If the defrost heater which is located in the freezer compartment behind the freezer wall. It will be at the bottom of the evaporator. If the defrost heater has continuity they the main control board located at the top of the unit will need to be replaced.

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1 Answer

Thomas, You will want to check to make sure that the fan motor is running in the freezer compartment. If not then test the fan for voltage to it. If there is voltage then replace the fan. If there is not voltage then replace the control board.

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1 Answer

Leyland, Did you check or replace the evaporator thermo disc, mounted on the evaporator under the evaporator sensor ? And did you actually test the resistance of the defrost heater (38 ohms). And, you are sure the door is closing and sealing, especially at the top of the door. You should also check the pan heater resistance (330 ohms). We'll be sending you some additional information.

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