Testing a thermal fuse
|Disconnect the power source to your dryer before you conduct this or any other test. Either unplug the unit from the wall outlet, remove the appropriate fuse from the fuse box, or flip the appropriate breaker in the circuit breaker panel.|
Testing a dryer's thermal fuse is much like testing its thermostats. Follow these steps to replace your dryer's thermal fuse.
The wires leading to the thermal fuse are connected using metal slip on connectors. Remove the wires by pulling on the connectors, and not the wires themselves. It may be a good idea to use a pair of needle nosed pliers to help you.
Set your multimeter to the R X 1 setting. Take each of your meter's probes and touch one to each terminal. You are testing for continuity, and you should receive a reading of either zero or infinity. At room temperature, testing the thermal fuse should produce a reading of zero. But if a thermal fuse is tested when it is heated to its limit, a reading of infinity should be produced. We strongly recommend that you test your thermal fuse at room temperature.
If the test you conduct with your thermal fuse does not produce these results, then you should replace the component.