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Blown thermal fuse on Kenmore dryer

I've replaced the thermal fuse twice on my Kenmore dryers, 70 series. There are no clogs, leant screen is clean, brand new duct and no kinks on it and fan motor has no build up. What is causing the fuse to blow?

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  • jose_herrera May 16, 2009

    Hello, thanks for replying. Here is the info you requested.
    Kenmore 70 Series
    Model #110.66712690
    Serial# MF3409108
    Thanks again.


  • jose_herrera May 17, 2009

    Hello vickygomar,
    I just purchased a thermostat kit, which includes two t-stats and a couple of connectors, for this particular dryer. I spoke with a buddy at work and he informed me he had similar issues with his dryer a while back that that is what the problem was. Please let me know if this is what you think it is or some other issue? Regards Jose Herrera


  • jose_herrera May 20, 2009

    I received the fuse and stat a couple of hrs ago and replaced them. I ran a couple of loads already and so far so good. I did notice that even in the low/delicate heat setting, the dryer/clothes still fell pretty hot?
    Is this something I need to be concerned about? I'll let you know if the fuse blows again. And thanks again for the reply. Jose


  • jose_herrera May 22, 2009

    Guess what vickygomar, the darn thing did it again. I was drying my 3rd load and it blew the thermal fuse. What next since I've replaced the thermal fuse 3x and both thermostats?

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I need the serial# to assist you better.

Thank you for trust fixya.com

Posted on May 14, 2009

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  • VIRGINIA MARTINEZ
    VIRGINIA MARTINEZ May 18, 2009



    this is important as your friend recomend it.



    Whirlpool suggests replacing the cycling thermostat also when the fuse goes bad since it is probably not shutting the elemet off when it should if the fuse opened...also be sure to re-check your vent system from the dryer to the outside, make sure you have good air flow.







    Your Rating is very important for me

    "Was this helpful?"

  • VIRGINIA MARTINEZ
    VIRGINIA MARTINEZ May 18, 2009



    this is important as your friend recomend it.



    Whirlpool suggests replacing the cycling thermostat also when the fuse goes bad since it is probably not shutting the elemet off when it should if the fuse opened...also be sure to re-check your vent system from the dryer to the outside, make sure you have good air flow.







    Your Rating is very important for me

    "Was this helpful?"

  • VIRGINIA MARTINEZ
    VIRGINIA MARTINEZ May 20, 2009

    am so glad to hear that your dryer is working proparly.

    let me know if these anything also I can help u with am here to help U.

    If you satisfy with my help please



    Your Rating is very important for me
    "Was this helpful?"

  • VIRGINIA MARTINEZ
    VIRGINIA MARTINEZ May 22, 2009

    let see if this helps you a bit.

    Firt at all have you check the lint(lana) in your dryer not only in your front your driyer but in the behind tub, and in the bent to see if is running freely let test it ok,

    1.- go to the out side vent

    2.- put in the vent 3 squers of toilet paper together means with out cuting them in one piece,

    3.- turn your dryer on

    (*_*) If all the paper toilet fly freely is fine

    ((*_*))If the paper toilet goes slow, Give thanks to God because this Fuse save your live, your and your family,LOOK at this video

    DryerVentCleaner.com



    If you need to clean your lint and vent see this video

    http://www.youtube.com/watch?v=5Dj4im31l...





    This is a web side that I found so you can learn more about this problem.

    http://answers.yahoo.com/question/index?...



    KENMORE DRYER REPAIR VIDEO 5

    http://www.youtube.com/watch?v=Wd1OOYegk...



    You need a meter to check all this is just 10.00 in wal-mart.



    Let me know if this works for U and what was the problem.



    Was this information helpful?

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1 Answer

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Check the vent for clogs and kinks. Could be something in the blower wheel causing the noise and blocking the vent.
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The cycling thermostat must also be replaced when replacing the thermal fuse. The cycling thermostat's failure to cycle off the heating element results in overheating of the dryer which consequently blows the thermal fuse open.

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Replacing only the thermal fuse should the dryer stops running and fails to start will result in its premature blowing or even the thermal cut-out (cut-off) located on the heater duct. Like the cycling thermostat, the high-limit thermostat must also be replaced once the thermal cut-out blows open. Refer to the parts diagram in the link below and look for item numbers 31(thermal cut-off), 34(hi-limit thermostat), 39(thermal fuse), and 41(cycling thermostat.

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This is very likely due to the thermal fuse being blow open as a result of a failed thermistor and/or clogged lint screen or restricted vent system. The thermal fuse is wired in series with the motor and cuts power to the latter when the former has blown. No dryer function works when the motor cannot run.

Disconnect power then clean the lint screen and the vent system if necessary. Remove the rear panel to access and replace the thermal fuse and the thermistor on the blower housing. Click on the link below for the troubleshooting and repair details.

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Igniter glows, then shuts off without igniting gas - the problem is probably with defective coils (black, located on top of the gas valve). It is recommended to replace all coils (usually two or three) if found defective.

Note: Sometimes the whole gas valve may be defective, thus not letting the gas out. However, this problem is not common.

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Note: It is recommended by most dryer manufacturers to replace a hi-limit thermostat when replacing a thermal fuse.

3. Igniter
Igniter may burn out or break. Replace the igniter if found defective.

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