4387562 - Whirlpool Refrigerator Thermostat

This Whirlpool Refrigerator Thermostat (4387562) is a genuine part designed specifically for Whirlpool appliances, but it also fits perfectly with KitchenAid, Roper, and Estate refrigerators. Known for its crucial role in controlling the refrigerator's temperature, this thermostat is the brain behind your appliance's cooling system. It uses a sensor bulb and capillary tube attached to the evaporator outlet to gauge the air temperature within your fridge and freezer compartments. Acting as a sophisticated on/off switch, it activates the compressor and fans when the temperature rises above your set point, and deactivates them once the ideal temperature is achieved. Additionally, it includes a defrost thermostat to prevent overheating of the evaporator coils during defrost cycles, ensuring your appliance runs efficiently without overcooling or overheating. Common symptoms that indicate its time to replace this thermostat include inconsistent temperatures in your refrigerator, excessive frost buildup in the freezer, or if your fridge or freezer can't maintain the set temperature, indicating the system is not cycling correctly. Check your device's model number to ensure compatibility before making a purchase.