Official Whirlpool Microwave Thermostats

Thermostat

$89.62

Fix Number: FIX11742549
Manufacturer Part Number: WP4449751

This high-limit thermostat helps prevent overheating by cutting power when the oven reaches unsafe temperatures. It protects internal components and supports safe operation. Replace it if the oven won’t heat, cooks unevenly, or fails to start. Always disconnect power before installation.

Fixes these symptoms

Door won’t open after self cleaning cycle
Element will not heat
Will Not Start
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Thermostat

$28.79

Fix Number: FIX4226431
Manufacturer Part Number: DE47-20034A

Fixes these symptoms

No heat
Won’t turn on
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Microwave High Limit Thermostat

$39.09

Fix Number: FIX4226453
Manufacturer Part Number: DE47-20059B

This thermostat (part number DE47-20059B) is for microwaves. Thermostat DE47-20059B is a safety device that shuts off the microwave if it overheats. Because high-voltage capacitors in a microwave can retain a lethal electrical charge even when the microwave is unplugged, a service technician should install this part.

Fixes these symptoms