Thermistor
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Drain pump
Replaces W10122062
Water left behind after a cycle usually points to the pump.
Electronic control board
Replaces W10485960
No ice, or ice that won't drop, points to the ice maker.
Light switch
Replaces 12466104
Door, lid and control switches stop a cycle when they fail.
Freestanding ice maker recirculation pump
Replaces W10489122
Water left behind after a cycle usually points to the pump.
1ThermistorWPW10511923
2Drain pumpW11539855
3Control boardW11034363
4Light switchW11291138Part numbers come from the Sears PartsDirect parts list for the KitchenAid KUIS18PNZB0 (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
Behind the lower front grille or on the back of the unit.