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Customer Questions and Answers for Oven Thermal Fuse by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18028221
Manufacturer Part Number: WP4451042

The Thermal Fuse is an OEM part for Whirlpool ovens. It is designed to monitor the oven's temperature and automatically cut off power to the heating elements if the temperature exceeds a certain threshold. It acts as a failsafe to prevent excessive heat buildup and potential damage to the oven or surrounding areas.

Causes of a faulty oven thermal fuse can include a power surge, overheating, or electrical component failure. These factors can result in the thermal fuse blowing; interrupting the power supply to the heating elements and preventing further operation of the oven.

Symptoms of a bad oven thermal fuse may include:

  • Oven not heating up at all
  • Error codes or error messages displayed on the oven's control panel
  • Oven appears to be powered off

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.
For the 248F thermal fuse with the insulated female spade and plug order WP4456654.

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Questions & Answers

For Whirlpool Oven Thermal Fuse (Part Number: OEM18028221)

1 Answer

Hello Pat, The F5 erro code indicates a door latch issue. Things that you want to look for are as follows: 1. If door latched: Disconnect power from unit. Check wires and connectors from control to door switch, then from door switch to control. If no damage to wires and all connectors okay, proceed to step C. Replace door switch. Re-apply power. Press and hold any key down for 1 minute to clear F5 failure code from memory. F2 will appear. Press CANCEL and observe for 1 minute to ensure operation is correct. 2. If door not latched: Disconnect power from unit. Check wires and connectors from control to latch switch, then from latch switch to control. If no damage to wires and all connectors okay, proceed to step C. Repeat steps A and B for door switch. 3. Measure door switch (door open = switch open small low voltage terminals). Replace switch if defective. 4. Measure latch switch (unlatch = switch open, CAUTION - oven light contacts are closed). Replace switch if defective. 5. If corrections are made in any step, reconnect power to control. Press and hold any key for 1 minute to clear R failure code from memory. F2 will appear. Press CANCEL and observe for 1 minute to ensure operation is correct. 6. If failure remains, disconnect power and replace control.

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1 Answer

Hello Kathy. If there is 240 volts at the element and it does not heat, you will need to order the element. It is bad.

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1 Answer

Hello Dave, The thermal fuse WP4451354 will kill the power to the control. This is the most likely culprit. It should be accessible through the control panel. It should be mounted near the terminal block.

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1 Answer

Hello Tony, There is a thermal fuse WP4451354 that will knock power from the control if it opens. The thermal overload WP9759243 will only prevent the heating but the control panel will still power up.

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1 Answer

Hi BH. Oven Thermal Fuse - This 230 degree Fahrenheit non resettable in line oven thermal fuse is located in the vent area. The two insulated female spade terminals are 3/16 inch and a 1/4 inch and may appear different from original. For the 248F thermal fuse with the insulated female spade and plug order WP4456654. Item Number: WP4451042. Use the service manual sent to guide you. It is the closest one we have in our young archives. Thank You.

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2 Answers

Hello John. I just looked up your model number and the part number you gave isn't shown on the diagram. I believe you will need either a thermal fuse WP4451354 or a thermal overload WP9759243. I'm sorry for your inconvenience. Have a great day!

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1 Answer

Hello Willie. The fuse WP4451042 is located in the wiring harness and connects to the control board. You will need to look at the wires and you will see the fuse. Hope this helps.

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