Defrost thermostat
Replaces WR50X34
Senses temperature so the fridge cycles on and off.
Hotpoint CTF21GBB: 4 replacement parts, including the defrost thermostat (WR50X55) and the seal kit (WR29X144). Parts list from Sears PartsDirect, checked November 15, 2026.
Replaces WR50X34
Senses temperature so the fridge cycles on and off.
Replaces WR29X47
A gasket that doesn't seal lets warm air in and frost build up.
Replaces WR60X128
A stopped fan means warm sections and frost on the coils.
Replaces WR2X3198
A stopped fan means warm sections and frost on the coils.
1ThermostatWR50X55
2Seal kitWR29X144
3Fan motorWR60X177Part numbers come from the Sears PartsDirect parts list for the Hotpoint CTF21GBB (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Inside the fresh food section, on a side wall or the ceiling near the light. Some models: behind the kick plate at the bottom.