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Customer Questions and Answers for Defrost Bimetal by Whirlpool

4.89 (64)
By: Whirlpool
Part Number: OEM18027960
Manufacturer Part Number: WP4387503

The Defrost Bimetal is an OEM part for Whirlpool refrigerators. It acts as a safety thermostat that monitors and controls the temperature during the defrost cycle. This component ensures that the defrost heater turns off when the evaporator coil reaches a specific temperature, preventing overheating and potential damage.

Causes of failure may include a malfunction due to wear and tear over time, electrical failure, or damage from moisture and ice.  

Symptoms of a bad Defrost Bimetal include:

  • The refrigerator is constantly running without cycling off
  • Frost buildup on the evaporator coils, leading to reduced cooling efficiency
  • The refrigerator or freezer compartment is too warm
  • Unusual fluctuations in refrigerator temperature

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

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Questions & Answers

For Whirlpool Defrost Bimetal (Part Number: OEM18027960)

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Answer

Hello Lori, You will need to look in the freezer compartment for the fan WR60X10254 that circulates air into the fresh food compartment. This fan should be checked to ensure it is running at full speed. If so, remove the rear wall of the freezer compartment to check for a frost build-up on the evaporator coils.

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Answered by AppliancePartsPros.com   |   Wednesday, May 20, 2015

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