Whirlpool Microwave Thermostats

Your Price

$91.74

PartSelect Number PS11742549

Manufacturer Part Number WP4449751

This high-limit thermostat is a safety-critical component designed to prevent overheating in ranges and wall ovens. It monitors internal temperatures and cuts power to the heating elements if the oven exceeds a preset threshold, typically around 335°F (170°C). Constructed from heat-resistant materials for long-term durability, it helps protect internal components and reduce the risk of fire or damage caused by control system failures, ventilation blockages, or fan malfunctions. A faulty thermostat may result in no heat, uneven cooking, or failure to start. Replacing this part restores safe and reliable oven operation. Installation should be performed with the appliance disconnected from power.

Fixes these symptoms

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

William from Carbondale, CO

upper oven of wall oven would not heat suspected high temp limit switch

removed unit from cabinet tested switch it was OK checked wiring and found shorted out wire leading to switch. cut out bad section and spliced wire back together
problem solved Read more...

Your Price

$29.47

Whirlpool Microwave Thermostat

★★★★★

2 Reviews

PartSelect Number PS4226431

Manufacturer Part Number DE47-20034A

This is a high limit thermostat designed for use within various models of microwaves. The purpose of a high limit thermostat is to open the circuit of the appliance when the internal temperature reaches a certain threshold, to avoid becoming a safety hazard. If this thermostat fails or is damaged, it will cause your microwave to stop operating entirely. This is not to be confused with a thermal fuse, which is a one-time use component, whereas this high-limit thermostat resets once it drops back below operating temperatures. But if your microwave has repeatedly shut off, it is defective, or if the manufacturer recommends you replace it after it is triggered, it needs to be replaced immediately for safe operation. Consider inspecting your microwave for other component damage or factors that could lead to your microwave overheating, because that is what is causing this thermostat to be triggered. Replacing the high-limit thermostat will require a flathead and/or Philips-head screwdriver to remove the cover for the electronics of the microwave. First, you will want to unplug your microwave from the wall outlet and use your screwdriver to remove the side/top cover to give you access within it. Using your user manual, locate the thermostat within the main panel assembly and disconnect it from the wire harnesses, which may require a set of pliers. Here you can inspect it and any other components for visible burn damage. You can also test this thermostat for continuity with a multimeter, to see whether it is burnt out or perhaps defective. Install the new thermostat in place and reassemble your microwave, and you can now microwave safely.

Fixes these symptoms

No heat
Won’t turn on
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Your Price

$40.02

Whirlpool Microwave High Limit Thermostat

★★★★★

1 Review

PartSelect Number PS4226453

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

Won’t turn on
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Your Price

$94.63

Whirlpool Microwave Range High Limit Thermostat

PartSelect Number PS11744498

Manufacturer Part Number WP7403P899-60

L280-110F

Fixes these symptoms

Little to no heat when baking
Will Not Start
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Installation Instructions

curtis from Paris, IL

Oven would not shut down, kept heating

The front oven control panel was already in need of replacement. The digital readout had quit working sometime ago, so we began by replacing the control panel as well as the temperature probe. Neither of these items did the trick. Next I replaced the HI/Lo sensor switch. This replacement was a bit more labor intensive. Have to remove several screws and remove a large portion of the top of the stove. Once access is gained to the hi/lo switch, it takes (2) minutes to replace it. This of course did not take care of the problem either. Finally I replaced the bake/broil/convection circuit board. This was a bit of a job, only because of the amount of wires to and from this board. I litterally took a picture of the board (from this web site) and drew in the wires and marked them by color and noted where they went. I then merely unplugged each wire and with one screw, removed the board and installed the new one. After plugging in the wires as per my picture, SUCCESS. The board did the trick. Over all, it was not bad doing the work myself. I know we saved a lot of money my doing it ourselves. Just gotta have patience. Read more...