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Why is my dryer getting too hot?
WARNING!
To avoid personal injury or death, disconnect your appliance from its power source
before you start any troubleshooting or repair work. Use caution when working inside any appliance.
A
dryer usually overheats because of a kink or blockage in the duct work,
blockage in the outside wall cap, or because of a defective cycling
thermostat. The cycling thermostat tells the dryer when to heat and not
to heat. Clean any lint from the inner and outer ductwork. You can also
remove the vent from the back of the dryer for a load or two to
determine if the clothes dry faster or not. If this doesn't fix it, go
ahead and replace the cycling thermostat. Make sure to use the
appropriate setting to dry the clothes.
The dryer pulls in air from the front, so any piles of clothes
may
be blocking air flow. Vents should be rigid or flexible metal. Plastic
venting collapses easily, collects water, and collects lint. If your
dryer can't get rid of any excess heat or moisture, the heat will build
up in the dryer drum, and becomes a fire hazard.
Clothes dryers are one of the leading causes of residential
(household) fires in the United States. The
National Fire Protection Association (NFPA)
reported an estimated 14,800 dryer fires in the United States in 1998.
This number of fires resulted in 16 deaths, about 300 injuries, and
cost over $75 million dollars in property damages. The major source of
ignition for a lot of the fires was the dryer vent stack. Because the
smoke and pollutants from the fire are vented outside, many traditional
residential smoke alarms will not go off until the fire is in a highly
advanced state.