You should be able to remove the back panel (after unplugging the AC power!) to see the coil under the barrel. You can use a multimeter set to ohms to measure the resistance across the 2 connectors of the coil, will probably need to unplug the connection to get accurate ready. If the resistance is infinate, the coil is bad.
However it is more likely that the termal fuse has blown rather than the element itself being bad. Follow the connectors up to find it, it should have 0 resistance if still good, infinite is blown.
Termal fuses have spring loaded contacts inside held in place with wax. If the tempurature gets too high, the wax melts allowing the contacts to separate. They can't be reset but replacements aren't expensive.
If the termal fuse turns out to be the problem, check the vents for lint build up or other restrictions. (Both inside the dryer from the filter on, and the external hose going outside.) Restictions on the exhuast can cause the heat to build, and is a fire hazard as well.
Investigate these five areas if your dryer is not heating up:
Proper Voltage
If your dryer won't heat up, it's possible that it is
not being supplied with the proper voltage. Here are three ways to make
sure power is getting to your dryer: First, make sure your dryer is
plugged in. Next, check the circuit breaker panel to make sure all the
circuit breakers are in the correct positions. Finally, check to make
sure no fuses in your fuse panel are blown. Any of these could explain
why power is not getting to your dryer.
Heating Element
It is possible that your dryer isn't heating because
its heating element is defective. Heating elements are irrepairable. If
yours has ceased to function properly, you will have to replace it. Open
your dryer's cabinet and locate the heating element so that you can
test it.
Another possible cause for a dryer not heating up
could be attributed to a faulty thermal fuse. Once a dryer's thermal
fuse has blown, it is no longer of any use. If your dryer's fuse is
blown, you will have to replace it. Open up your dryer's cabinet and
locate its thermal fuse so that you can test it.
Thermostat
If any of your dryer's thermostats have become
defective, they could be the reason that your dryer is not heating. Open
up your dryer's cabinet and test each of your dryer's thermostats. If
any are faulty, replace them.
A defective timer motor could also cause your dryer
to not heat up. Test your dryer's timer motor. If it is no longer
functioning as it should, replace either the entire motor assembly, or
just its motor.
Investigate these five areas if your dryer is not heating up:
Proper Voltage
If your dryer won't heat up, it's possible that it is
not being supplied with the proper voltage. Here are three ways to make
sure power is getting to your dryer: First, make sure your dryer is
plugged in. Next, check the circuit breaker panel to make sure all the
circuit breakers are in the correct positions. Finally, check to make
sure no fuses in your fuse panel are blown. Any of these could explain
why power is not getting to your dryer.
Heating Element
It is possible that your dryer isn't heating because
its heating element is defective. Heating elements are irrepairable. If
yours has ceased to function properly, you will have to replace it. Open
your dryer's cabinet and locate the heating element so that you can
test it.
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