Defrost bi-metal
Replaces 2221677
Senses temperature so the fridge cycles on and off.
Inlet valve
Replaces 2210494
Slow filling, no water or no ice can trace back to this valve.
Run capacitor
Replaces 1118576
A motor that hums but won't start often needs a new capacitor.
Defrost timer
Replaces 2188376
A dead display or random faults can come from the control board.
Light switch
Replaces 1118894
Door, lid and control switches stop a cycle when they fail.
1Defrost bi-metalWP4387503
2Inlet valveWP2315576
3Run capacitorWPW10662129
4Defrost timerW10822278Part numbers come from the Sears PartsDirect parts list for the KitchenAid KTRC19MMSS01 (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.