Thermistor
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Recirculation pump
Replaces W10747426
Water left behind after a cycle usually points to the pump.
Valve
Replaces W10870921
Slow filling, no water or no ice can trace back to this valve.
Electronic control board
Replaces W10485960
No ice, or ice that won't drop, points to the ice maker.
Pump assembly
Replaces W10702856
Water left behind after a cycle usually points to the pump.
Refrigeration appliance condenser fan motor
Replaces W10609117
A noisy or stopped fan means poor airflow and uneven temperatures.
1ThermistorWPW10511923
2PumpW11542867
3ValveW10897719
4Control boardW11034363Part numbers come from the Sears PartsDirect parts list for the KitchenAid KUID508ESS1 (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.