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.
Defrost heater
Melts frost off the cooling coils. Frost buildup and a warm fridge point here.
Roller
Thumping or squealing during a cycle points to worn rollers, pulleys or bearings.
Water inlet valve assembly
Slow filling, no water or no ice can trace back to this valve.
Water inlet valve
Replaces W10394076
Slow filling, no water or no ice can trace back to this valve.
Ice dispenser driveshaft seal
A gasket that doesn't seal lets warm air in and frost build up.
Evaporator fan
Replaces W10460280
A stopped fan means warm sections and frost on the coils.
Switch
Replaces C3680310V
Door, lid and control switches stop a cycle when they fail.
1Water filterEDR2RXD1
2Air filterW10311524
3Defrost heaterWP12729128
4RollerW10248789Part numbers come from the Sears PartsDirect parts list for the Whirlpool WRF736SDAB12 (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.