How to Change a Thermostat on a Whirlpool Duet Dryer
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Unplug the dryer and remove the two screws that secure the toe panel to the bottom front of the dryer. Pull the panel down and out to remove.
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Remove the screw from the bottom of the heat shield, which is located on the right side. Remove the shield.
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Remove the wires from the thermal cutoff and high-limit thermostat. Set your multimeter to the R x 1 scale and touch the leads to the thermal cutoff terminals to test for continuity. If you get an infinite reading, replace the cutoff and the high-limit thermostat.
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Remove the screws that hold the thermal cutoff and high-limit thermostat in the heater, then replace the two parts.
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Fasten the parts in place and reattach the wires. Put the heat shield back and replace the toe panel. Plug the dryer in and test.