Filter, water
Replaces W11256384
Makers suggest a new water filter about every six months.
Defrost heater
Melts frost off the cooling coils. Frost buildup and a warm fridge point here.
Thermistor
Replaces 12791417SP
Senses temperature so the fridge cycles on and off.
Ice maker
Replaces W10793298
No ice, or ice that won't drop, points to the ice maker.
Evaporator fan blade
A stopped fan means warm sections and frost on the coils.
1FilterEDR4RXD1
2Defrost heaterWP12729128
3ThermistorW10316760
4Ice makerW10884390Part numbers come from the Sears PartsDirect parts list for the KitchenAid KRFF302EWH03 (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
Inside the fresh food section, on a side wall or the ceiling near the light. Some models: behind the kick plate at the bottom.