Question about Kenmore 75944 Gas Dryer

3 Answers

Kenmore gas dryer model 110.72924100 will tumble but not heat up.

Gas supply is OK. I have already replaced the hot surface ignitor, which was old and reading 70 ohms. The gas solenoids both check out at 1,300 ohms. The overheating sensor is closed at room temperature, and open when heat is applied, which I think is correct. When I set a heat level and press the start button, however, the unit tumbles, but the ignitor does not heat up, and the gas does not come on. This unit has a couple of sensors on the exhaust duct inside the dryer. Would those stop the ignitor from working if they were bad?

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  • markbeu Jun 19, 2009

    Fix Ya's first response appears not to have taken into account what I said in my post. When I start the dryer, the ignitor does not come on at all.


  • markbeu Jun 19, 2009

    I had seen the previous expert's comments before, and they do not address my specific problem. The ignitor in my dryer does not come on or glow at all, not even for a few seconds. All the components,including the ignitor, the solenoids, and the flame and overheating sensors, seem to check out, but nothing happens when I start the dryer except that the barrel turns.

  • markbeu Jun 19, 2009

    There is no airflow problem. All ducts in the unit are clear, and the exit duct is only 18 inches long. I checked the two sensors that are on the duct carrying air away from the dryer barrel. One had four leads, two in the center, and two at the outside. The outside leads read 0 ohms, and the two center leads had about 6,000 ohms across them. The sensor right next to that one only had two leads, and they were open - the only sensor that read as open in the whole unit.


  • markbeu Jun 20, 2009

    sethvel1 is correct, but I had figured this out on my own before seeing his post. The thermal fuse on the discharge side had blown. When I shorted its leads (a test I learned elsewhere) the unit began to work properly. I have already purchased the replacement part.

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Hey there, any sensor on the discharge air side of your drier are going to be safeties, meaning if they are open then they are tripped, you can cut the leads ( long enough to be able to re connect to the switch) and then wire nut them together. Sounds to me like either you have a problem somewhere from the temp control through the safeties or if that's all good and you are still not trying to power your ignitor then it is probably your ignition module. The ignition module reads the amp draw throught the ignitor to know when its hot. Also, I know you ohmed it out but visualy check for cracks anywhere and do not touch it with your fingers. Let me know what you find out.
set

Posted on Jun 20, 2009

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Yes they are safety's that will shutdown the unit , there should be 1 on the duct and 1 on the flame tube , they should both read low ohms. if you have an exhaust problem with the unit the airflow will decrease causing the flame to out of line.
check these out and let me know how it goes.
Phil

Posted on Jun 19, 2009

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Hello.
Welcome To Fixya

A Gas Dryer blows air through a burner assembly to heat the air. The burner assembly consists essentially of a gas valve, ignitor and in dryers that use a glow type of ignitor, a flame sensor. If the flame sensor fails, the ignitor may not go off and the gas flow will not start.

The easiest way to diagnose the flame sensor is to observe the burner operation. Remove the small access panel in front, select a high temperature setting and start the dryer. Watch the burner assembly, shortly after starting the dryer the ignitor should begin to glow. If it glows for several seconds (up to 15 seconds) and then goes out, then the problem is probably the solenoids (coils). If the ignitor glows and stays on, then the problem is usually the flame sensor.

For testing purposes, the sensor should show continuity at room temperature and no continuity when it is heated by the ignitor.

Posted on Jun 19, 2009

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