GE Refrigerator Defrost Thermostat (WR50X10010)

The GE Refrigerator Defrost Thermostat monitors the temperature of the evaporator coils and cuts off power to the defrost heater once the coils reach a safe temperature during the defrost cycle. It acts as a safety switch that prevents the heater from running too long, protecting the freezer and refrigerator compartments from overheating.

The GE Refrigerator Defrost Thermostat can fail when the internal contacts wear out, corrode, or become stuck open or closed from repeated heating and cooling cycles over time. A failed thermostat may cause the defrost heater to never turn on, allowing frost to build up on the coils, or in some cases allow the heater to run unchecked, which can damage surrounding components.

If you notice any of these symptoms in your refrigerator, the defrost thermostat may need to be replaced:

- Thick frost or ice buildup on the back wall of the freezer compartment

- Refrigerator or freezer not cooling as well as it used to

- Food in the refrigerator section is warmer than expected

- Evaporator fan is running but air is not circulating properly

- Visible ice blocking the evaporator coils or fan area

- Refrigerator runs constantly without cycling off

- Frost melts unevenly or not at all during the defrost cycle