The Defrost Heater is an OEM part for Frigidaire refrigerators. It plays a crucial role in the refrigerator's defrost cycle, melting away any frost that accumulates on the evaporator coils. Causes of a bad Defrost Heater can include a burnt-out heating element, electrical issues such as faulty wiring, or a malfunctioning thermostat that fails to activate the heater when needed. Symptoms of a failing Defrost Heater include: Buildup of frost or ice on the evaporator coils despite regular defrost cycles Increasingly warmer temperatures in the refrigerator or freezer compartments The refrigerator cycling on and off more frequently than usual Unusual noises from ice buildup that affects the fan This OEM replacement is also compatible with Electrolux, Gibson, Kelvinator, and Kenmore models.242044113 (AP4527302) replaces 1614859, 240316107, 241940201, 7240316107, 7241940201, AH2581596, EA2581596, PS2581596.