The Thermostat (Plate) is an OEM part for GE microwaves. This thermostat helps to prevent overheating, which can cause damage to the microwave and potentially pose a safety risk. Over time, the thermostat can wear out or fail due to electrical issues, repeated heating cycles, or manufacturing defects.  Symptoms of a bad thermostat include: The microwave not heating properly The microwave shutting off unexpectedly during use Error codes or warning signals related to temperature issues The microwave not starting at all This OEM GE part is also compatible with Hotpoint, RCA, and some Kenmore models.WB27X11034 (AP4363203) replaces WB27X10713, 1474119, AH2339856, EA2339856, PS2339856.