The Defrost Control Board is an OEM part for Frigidaire refrigerators. This board manages the defrost cycle by controlling the activation of the defrost heater and the monitoring of the freezer's temperature.  Over time, the defrost control board can fail due to electrical issues, wear from continuous use, or damage from power surges.  Symptoms of a bad defrost control board include: Excessive frost buildup in the freezer compartment The refrigerator not cooling properly The defrost heater not activating Frequent cycling on and off of the refrigerator This OEM Frigidaire part is also compatible with Electrolux, Gibson, Kelvinator and some Kenmore models.242011001 (AP4560766) replaces 1614673, 241736601, AH2581557, EA2581557, PS2581557.