Defrost Heater And Thermostat Assembly Specifications this Part Assembly Has 2 Functions: The Defrost Heater Keeps The Cooling Coils From Frosting Over And The Thermostat Senses That The Heat Near The Cooling Coils Has Reached The Desired Temperature. This Part Fixes The Following Symptoms: This Part Fixes The Following Symptoms: Fridge Too Warm | Freezer Not Defrosting | Freezer Section Too Warm | Freezer Too Coldthis Part Works With The Following Products: This Part Works With The Following Products: Refrigerator. This Part Works With The Following Products: This Part Works With The Following Products: Jenn-Air, Maytag. Part, Wp61006199 Replaces These: Part, Wp61006199 Replaces These: Ap6010105,61003949,61004310,61006125,61006199Cross Parts: 61003949, 61006199, 61004310, Ap6010105, 61006125