Question about Kenmore 63942 Dryer
Kenmore dryer (model #66902), does not heat. Powers on, drum spins, but no heat. I have a list of things that it may (or may not be) but I can not get into the unit. Where are the fuses? Heating element?My Kenmore Gas Dryer model # 110.72822100 heats up for 5-10 minutes when started and then the heat turns off and the dryer keeps on working with cold air. Any suggestion will be much appreciated.I have replaced the thermal fuse but it did not help
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There is no heating element - this is a GAS dryer.
Gas dryers use a burner system to create heat. This system has a number of parts that are known to fail over time. Some you can test, some you must simply rely on symptomology to form your decision to replace or not to replace.
The parts prone to failure in your burner assembly are:
Once the Igniter is hot enough the Flame Sensor breaks the Igniter circuit which allows the electricity to run through the Coils that open the gas valve. Gas then flows out past the Igniter and catches fire and the heat is drawn into the airflow within the dryer.
Observation is key to troubleshooting a gas dryer. Does your dryer get hot at the beginning of the run but finish out cold? Does it never heat at all? Do you hear a chattering sound at times?
If your dryer is hot at the beginning of the run but finishes cold then it is likely you have bad coils. As coils age, they lose the ability to hold the gas valves open.
Sometimes this will cause the valves to open and shut rapidly, resulting in a chattering sound. Unfortunately, you can't test the coils to verify the failure so replacing them is a decision based on the above observations.
If the dryer never heats, then there are more items to check and test. The first item is the Igniter. There is a molex (clear plastic) connector attaching the Igniter to the burner circuit, Disconnect this and place your probes onto the two contacts on the Igniter side of the connector. The meter should read under 100 Ohms of resistance. Any reading above this value means that the Igniter needs replacing. You will find directions for replacing an Igniter here. Your igniter seems to be working fine since you DO have heat for a few minutes.
If the Igniter passes your test then you need to test continuity on the flame sensor, You should have continuity between the two contacts. If not, then you need to replace the flame sensor. To test it - touch the probes of your DMM to either contact of the device and note the reading on the meter. If the meter reads 'Infinite Resistance' and it uses a dial, then move the dial up to the highest setting and test the device again. If it still reads the same, then the device has failed the test.
If all of the above pass their tests, you need to make certain that there isn't a build up of dryer lint around the burner. Sometimes, lint will impede the gas flow preventing the unit from igniting.
If none of these things help, then it is time to call in a professional.
I have supplied you with the diagrams, and troubleshooting - if you feel the repair is within your abilities, please use the "Continue with this expert" option, and I can give you more useful information to get this repair done.
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Posted on May 08, 2009
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Posted on Jan 02, 2017
First I would make sure that you have 240volts coming into the dryer. Then I would check the thermal cut-off in is a fuse on the housing of the element. that should be it but if not look for the heater relay.
Posted on Jan 13, 2009
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