Frigidaire 297216600 Defrost Thermostat for Refrigerator (FFH17F7HWC, FFU14F5HW, FKFH21F7HW, FFU14F7HB, FRG297216600) Defrost Thermostat for Frigidaire 297216600 Refrigerator. New and High quality ensured. Hi-Limit. Genuine Replacement Part It is used on Hotpoint and other refrigerator brands.