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Use this guide to test the thermal fuse on your Whirlpool Dryer and replace it if necessary.
While this guide is listed as difficult, this is more of a reflection of length, and a few tricky steps, rather than a need for special skills.
The thermal fuse protects your dryer (and clothes) from overheating. The dryer will not start if the thermal fuse is blown.
It's easiest to test the fuse while it's in place on the blower housing. Replacement is very simple if the fuse is blown.
This guide will work for most Whirlpool dryers. This guide is written with a model WED87HED dryer. If you have a different model, you may encounter some minor disassembly differences, but the overall repair process will be the same.
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Use a nut driver to remove the screws securing the top panel to the rear panel bracket.
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Grasp the top and slide it 1/2 to 1 inch toward the rear of the machine.
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Lift the control panel up and tilt it away from the chassis to remove it.
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Use a small flat blade screwdriver or a spudger to unlatch both sides of the door switch connector.
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Unplug the connector.
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Remove the upper front panel sheet metal screws.
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Tilt the machine backwards and prop it securely, or have a friend hold it.
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Remove the sheet metal screws on the bottom edge of the panel.
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Pull the bottom of the panel away from the chassis about two to three inches.
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Lift the front panel off the small tabs on the chassis near the top of the panel and remove it.
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Remove the green ground screw.
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Remove the cord terminal block screws.
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Remove the rear panel screws.
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Lift the panel about 1/2 inch and tilt it to the rear to release it from the vent pipe.
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Slide the panel off the vent pipe and remove it.
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Make sure that the vent pipe is fitted into the collar on the panel.
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Make sure the tabs at the bottom are aligned to the bottom rim of the chassis.
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Position the panel so its screw holes match with the chassis.
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Pull the lint filter up out of the lint filter slot to remove it.
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Remove the mounting screws securing the lint filter housing.
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Pull the filter housing outward from the chassis and down to remove it.
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Squeeze the locking tabs on the moisture sensor connector.
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Disconnect the connector.
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Disconnect all of the connectors on the main board front half.
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Remove the sheet metal screw that retains the main board to the main board bracket.
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Lift the rear corner of the main board nearest to the side walls of the chassis.
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Slide the main board toward the front of the dryer to release the tabs securing it to the main board bracket.
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Remove the sheet metal screw holding the main board bracket.
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Lift off the main board bracket from the chassis and turn it so the bottom is exposed.
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Using long nose or slip joint pliers, pinch the locking wings of the harness retainer clamp.
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Separate the harness from the main board bracket and remove the main board bracket.
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Remove the screws securing the upper front bulkhead to the front of the chassis.
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Remove the sheet metal screws securing the top plastic portion to the upper front bulkhead.
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Push the idler arm (the metal upside-down "L") up to relieve the tension on the drive belt.
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Remove the belt from the motor pulley.
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Gently lower the idler arm until it rests parallel to the dryer floor.
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Remove the screws securing the lower front bulkhead.
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While supporting the drum, lift the lower front bulkhead off of the hooks on the chassis.
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Use the belt to lift the drum a few inches.
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Swing the drum out of the front of the dryer.
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The following steps show how to test and replace the thermal fuse.
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Disconnect the two spade connectors attached to the thermal fuse.
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Set your multimeter to the ohms (Ω) setting. If your meter has more than one scale for ohms, set it to (Rx1).
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Touch the probes to the contacts on the thermal fuse. The reading should be less than one Ω.
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Slightly lift the screw end of the fuse first and then slide the tab out of the mounting hole.
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Lift the thermal fuse out of the mounting hole and remove it.
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To reassemble your device, follow these instructions in reverse order.
Repair didn’t go as planned? Ask our Answers community for help.
To reassemble your device, follow these instructions in reverse order.
Repair didn’t go as planned? Ask our Answers community for help.
