Customer Questions and Answers for Defrost Thermostat by Whirlpool

The Defrost Thermostat is an OEM part for Whirlpool refrigerators. The thermostat monitors the temperature of the evaporator coil and signals the defrost heater to turn on or off to prevent frost buildup, ensuring efficient cooling.

Causes of a bad defrost thermostat can include wear and tear over time, exposure to extreme temperatures, or electrical malfunctions.  

Symptoms of a bad defrost thermostat include:

• Excessive frost buildup in the freezer
• The refrigerator not maintaining the correct temperature
• The defrost heater not activating
• The refrigerator running continuously or not running at all

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