Water filter
Makers suggest a new water filter about every six months.
Air filter
Replaces W10315189
Filters clog with use. The manual lists how often to change it.
Thermistor
Senses temperature so the fridge cycles on and off.
Capacitor
Replaces W10590083
A motor that hums but won't start often needs a new capacitor.
Filter combo pack
Replaces W10413645A
Filters clog with use. The manual lists how often to change it.
Evaporator motor
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Door cam
Drive parts wear out: a machine that fills but won't spin or agitate often points here.
1Water filterEDR1RXD1
2Air filterW10311524
3ThermistorWPW10383615
4CapacitorWPW10662129Part numbers come from the Sears PartsDirect parts list for the KitchenAid KRFF300ESS02 (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.