Question about Kenmore 63942 Dryer
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Posted on Jan 02, 2017
most problems with dryers not heating is the thermo fuse is blown. bout 20 buck to replace it looks like a small white flat football. but most likely if it went out that means the the high temp thermostat is messed up too
Posted on Feb 07, 2008
You may need to do some troubleshooting. This can be done with the machine unplugged - you may have to activate the start switch, belt switch (if it has one) and the motor centrifugal switch manually.
Tip for troubleshooting 220v systems - clip one lead of a ohm meter to either L1 or L2 on the terminal block. It doesn't matter which one. According to the tech sheet (under console) follow the path for current from your clipped terminal, through the heating element, to the opposite terminal. All the readings should be less than 100 ohms, until you reach the failed part. Confirm failure by disconnecting a lead from the suspected part, and test only that part.
Live troubleshooting is sometimes slightly easier, but much more dangerous than the procedure described above. - It is definitely not recommended for beginners, or for professionals, if it can be avoided.
Posted on Mar 10, 2008
If the Thermal Fuse were blown, the dryer would not run at all. If your dryer runs, but does NOT heat, the following link explains how to troubleshoot an ELECTRIC dryer with a no heat problem:
First, begin by unplugging the dryer and verifying the voltage at the wall receptacle. You should read 220-240VAC across the two Hot terminals (left and right slots). If the voltage is incorrect, check to make sure you don't have a breaker tripped. Some homes use 2 separate 120VAC breakers to provide power to the receptacle vice using one 240VAC breaker.
If the voltage IS correct, leave the dryer unplugged and remove the cover plate on the terminal block in the back of the dryer (this is where the power cord is installed). Plug the dryer back in and take a voltage reading across the two hot (RED and BLACK) wires at the terminal block. You should read 220-240VAC. If the voltage is good, you have an internal heating problem. If the voltage is bad at the terminal block, but good at the receptacle, you have a bad power cord.
NOTE: If the wires at the terminal block are not color coded, the outer two wires (left and right) are the hot leads. The center conductor is neutral or ground.
The reason a dryer will still run if the input voltage is incorrect, is because the drive motor only uses a portion of the 220 service. The motor runs off 110-120VAC, while the heating circuits require 220-240VAC. So, if you are missing 1/2 your input voltage due to a tripped breaker or bad power cord, your dryer may exhibit these symptoms.
If you determine the problem to be internal, the heating circuits will either be located in the rear of the dryer on the right hand, or under the dryer drum on the right hand side. Usually, an easy way to determine is by the location of the lint screen filter. If the filter is on top of the dryer, the heating circuits are in the back of the dryer. If the lint screen is in the door, the heating circuits are located under the dryer drum.
The Heating Element is located inside a heater box. The Thermal Cut-Out (TCO) will be located on the outside of the heater box on the end opposite the heating element terminals. The Hi-Limit Thermostat will be located adjacent to the heating element terminals.
If either the TCO or Hi-Limit Thermostat are determined to be bad, replace BOTH components at the same time. That is why these components are commonly sold as a set. Failure to do so may result in premature failure of any parts you replace.
Replacement parts (if required) can be found at the following websites:
The average cost of these components varies, so shop and compare. The first three websites I listed have helpful exploded view parts diagrams that can help you locate and properly identify the parts you need. The heating components are usually listed under the "Bulkhead" section.
NOTE: In many cases the problem is NOT the heating element. The heating element has protection devices that are designed to regulate the heat temperatures. If the dryer overheats the Thermal Cut-Out (TCO) typically will blow BEFORE the heating element. The replacement kit is much cheaper than purchasing a new heating element that may or may not be the problem.
Read through the information I provided and, if you have any questions, please post back with your complete model number (located on a nameplate around the door opening) so I can provide you with better service. I hope you find this information is helpful.
Posted on Feb 27, 2010
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