Question about Whirlpool Dryers

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Intermittant heating. The igniter always comes on but the gas does not. It works when it is first stated but then is iffy.

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  • jruther814 Nov 19, 2009

    Hi Ginko,



    Yeah, that's what I kinda figured. I don't have a schematic for the dryer so don't know if there is a thermal; switch inline with the solinoid. Model is LGR5620KQ1 Whirlpool gas dryer.



    JR

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  • Master
  • 1,015 Answers

The way a dryer ignition system works is as follows. The system has two gas solenoid valves that must both be open to allow gas to the burner. One solenoid opens when the dryer is in operation and the second one opens when the igniter is on. The igniter is wired on the same circuit as one of the gas solenoid valves. When the igniter reaches 2200 degrees the electrical resistance changes so that approx 3 to 4 volts will be sent to the gas solenoid valve to open it. This is a safety system that will keep the gas from being released if the hot surface igniter is not on. So one of the gas solenoid valves could be sticking intermittently causing your problem. There is also a chance that the igniter is weak and not always reaching the high temp needed to activate the gas valve. When you turn on the dryer and the problem happens check the voltage reading to both gas valves and verify they are getting the voltage needed to open them. The top of the valves will be magnetic when they are charged also. You can also test the igniter with a ohm meter. It should read 500 to 800 ohms. Now that reading is an average for igniters and might be different for your igniter. They usually have the rating on the igniter body or schematic for the dryer. from what you are describing it sounds like a gas solenoid valve is sticking. And remeber to be very careful doing any work on the dryer. Take precautions not to get shocked or burned from ignition of gas. let me know if you have any other questions or what you find.

Posted on Nov 20, 2009

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  • Whirlpool Master
  • 19,396 Answers

Hi.

That is probably the valve coil.

Check also thermal fuse.

If you give me complete model number as printed on service tag, I can be more specific on parts.

Regards.

Posted on Nov 19, 2009

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