GE / General Electric Refrigerator Defrost Thermostat WG03F01804, Replaces WG03F01818

Genuine OEM refrigerator freezer defrost thermostat, also described as a defrost bi-metal thermostat or defrost thermostat. It functions as a safety device that limits defrost-heater temperature and helps prevent overheating.

Is This the Right Part?

Common Symptoms

• Frost buildup
• Fresh-food section too warm
• Freezer section too warm
• Leaking water
• Fresh-food or freezer section too cold

Check Before Replacing

• If the model has a display and shows the lowercase “dE” code, treat it as an indication that the defrost system has not operated properly; it does not identify this thermostat as the failed component.
• With power disconnected, inspect the evaporator area for abnormal frost accumulation before replacing parts.
• Verify actual compartment temperatures using the model’s temperature-check guidance; do not rely only on fluctuating air temperature.
• Because several defrost-system components can produce similar symptoms, have the heater and defrost control evaluated before concluding that this thermostat is defective.

Pro Tip

Part Details

Key Features

• Genuine OEM GE refrigerator defrost thermostat
• Also called a defrost bi-metal thermostat
• Safety device against overheating
• Installs clipped onto the evaporator in the defrost circuit

Installation Notes

• Disconnect electrical power before service.
• Access the evaporator area according to the refrigerator model’s service instructions.
• The thermostat is clipped to the evaporator; reconnect its wires and reinstall it in the original location.
• Evaporator fins can be sharp; use appropriate hand protection.
• Reinstall the evaporator cover and restore power only after the component and wiring are secured.

Verified Compatible Models

CFE28TP2MDS1, CFE28TP3MCD1, CFE28TP4MBW2, CFE28TSHBSS, CFE28TSHCSS, CFE28TSHDSS, CFE28TSHESS, CFE28TSHFSS, CFE28TSHGSS, CFE28TSHISS, PFE29PSDASS, PFE29PSDBSS, PFE29PSDCSS, PFE29PSDDSS, PFE29PSDESS

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.