The Defrost Heater is an OEM part for Frigidaire refrigerators, playing a critical role in the appliance's defrost system. This component is designed to melt away frost and ice that accumulate on the evaporator coils, ensuring that air can flow freely and the appliance maintains optimal cooling efficiency. Causes of failure might include a burnt-out heating element, damage to the heater's electrical connections, or a malfunction in the control system that fails to activate the heater during the defrost cycle.  Symptoms of a bad Defrost Heater include: Frost build-up on the evaporator coils, leading to reduced cooling efficiency. The freezer or refrigerator compartment is too warm. The appliance is constantly running in an attempt to maintain the set temperature. Pools of water or ice on the floor of the freezer compartment due to incomplete defrosting. This OEM Frigidaire part is also compatible with Electrolux, Gibson, Kelvinator and some Kenmore models.216730700 (AP2113768) replaces 297216100, 297216101, 7216730700, 7297216100, 890572, AH426768, EA426768, PS426768.