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A defective heating element can make a dryer too hot. If the element partially shorts out, it can produce heat all the time, regardless of whether the dryer is calling for heat. Remove the heating element to inspect it. The coils should not be touching each other or anything else.
Other Causes and Conditions
Air Flow Problem
Dryers need good ventilation to work properly. If the vent is clogged it can make the dryer too hot. Clean all of the vent tubing thoroughly.
Although not common, a defective cycling thermostat can make the dryer too hot. The cycling thermostat is supposed to turn on and off the heat to maintain the proper temperature. If the thermostat is defective it may keep the heat on too long. The thermostat is not adjustable or repairable, it must be replaced.
Most dryers have a felt seal at the front and rear of the drum to keep the heat inside the drum. If the felt seal is worn away or missing, the dryer may keep heating and make the dryer too hot. This is not common.
A defective blower wheel will not spin properly and will not vent the hot air, making the dryer too hot. Check to see if there is adequate airflow out of the dryer.
Most Dryers has a thermal switch that when the air flow gets so hot it will shut down the dryer until it cools down or on some models the thermal switch has to be replaced .. The most common problem to cause this is a restricted air flow somewhere in the exhaust of the heated air causing the dryer to reach too high of temp, which could cause a fire .. Hope this information is help full......
If your Whirlpool electric dryer
is having trouble heating, you should check all of the thermostats, the
thermal cut-off, all fuses and the electric heating element for
continuity and proper connection.
Hi You need to remove the back panel first then with a multi meter the easiest way is to put the meter on continuaty test (beeps when contact is made then with the dryer switched of and unplugged put one probe on the one side of the element and the other on the other side if it beeps then your element should be ok if not one of two things (1) Your element is blown or (2) there should be a fuse around the area of the back support plate it may be a normal round fuse or a ceramic round fuse or what looks like a brown rectangular piece of plastic with a wire out each side test the fuse in the same way as you tested the element if blown replace if not then put in a element.
Your dryer has a non-resettable "thermal safety fuse" part number 3392519 which stops the machine dead when the temperature near the heater gets too high. Typically a restricted vent system causes this so you definitely want to check that before replacing it. A failed control thermostat can also cause this so check the operating temp too.