Defrost heater
Melts frost off the cooling coils. Heavy frost points here.
Door gasket
Replaces 216522309
Leaks, a torn edge or a door that won't seal mean it's time for a new one.
Upright freezer defrost timer
Replaces 216744400
A dead display or random faults can come from the control board.
Fan motor
Replaces 216822500
A noisy or stopped fan means poor airflow and uneven temperatures.
Door gasket
Replaces 216522312
Leaks, a torn edge or a door that won't seal mean it's time for a new one.
Light bulb
Replaces 216846400
The light bulb this model takes.
Door switch
Door, lid and control switches stop a cycle when they fail.
1Defrost heater216730700
2Door gasket5304507200
3Defrost timer5304518034
4Fan motor5304436055Part numbers come from the Sears PartsDirect parts list for the Frigidaire FFU20FG4AW2 (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Where the model number is
Upright freezers: inside, on a side wall near the top. Chest freezers: on the back or on the side near the lid hinge.