Thermal fuse
Replaces 4393308
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Capacitor
Replaces 8205553
A motor that hums but won't start often needs a new capacitor.
Light bulb
The light bulb this model takes.
1Thermal fuseW11707984
2CapacitorW10850446
3Light bulb8204670Part numbers come from the Sears PartsDirect parts list for the KitchenAid KHMS155LSS4 (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
Open the door: the label is on the frame. Over-the-range models: sometimes behind the vent grille.