Defrost bi-metal thermostat
Senses temperature so the fridge cycles on and off.
GE MSX22GAZBAA: 9 replacement parts, including the defrost bi-metal thermostat (WR50X122) and the roller (WR2X3594). Parts list from Sears PartsDirect, checked November 15, 2026.
Senses temperature so the fridge cycles on and off.
Thumping or squealing during a cycle points to worn rollers, pulleys or bearings.
Replaces WR62X79
A motor that hums but won't start often needs a new capacitor.
A dead display or random faults can come from the control board.
A stopped fan means warm sections and frost on the coils.
Replaces STD372402
The light bulb this model takes.
Crisper drawers, shelves and door bins made for this fridge.
Crisper drawers, shelves and door bins made for this fridge.
Crisper drawers, shelves and door bins made for this fridge.
1ThermostatWR50X122
2RollerWR2X3594
3Run capacitorWR55X24064
4Defrost timerWR9X489Part numbers come from the Sears PartsDirect parts list for the GE MSX22GAZBAA (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.