Q:

How does an oven thermal fuse work?

A:

Quick Answer

A link in an oven thermal fuse melts if the temperature in the oven gets too hot, interrupting the flow of power to the heating element. While some manufacturers use a circuit breaker with a push button reset, many continue using a fuse that requires replacement each time it blows.

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Full Answer

If an owner turns on an oven and it does not heat, although the surface units continue working correctly, the thermal fuse is the most likely cause. On some self-cleaning ovens, the links melt each time the cleaning cycle runs. A faulty thermostat or oven fire could also cause the fuse to blow.

Replacement fuses are available through appliance part retailers. Before beginning the replacement process, the owner turns off the circuit breaker to disconnect power. On ranges that plug into an outlet, pulling the plug ensures there is no power.

A metal panel behind the stove allows access to the fuse. When the panel is off, the fuse is visible on the back of the oven wall where two screws hold it in place. After removing the old fuse, the new one replaces it, and the wires attach in the same locations as on the defective fuse. The reassembled oven is ready for power and testing to ensure that it is ready to cook again.

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