Question about Kenmore 80809 Microwave Oven

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Fan does not shut off unless unplugged

My Kenmore Microwave # 721.80019401 has a fan vent that does not shut off.  The only way to turn it off is to turn off the breaker or unplug it.  From what I have found in talking to technicians it is a control panel issue.  These microwaves have automatic fans that turn on if the stove below gets to hot.  In my case, it never shut off after it turned on.
My options are buy a new microwave and have it installed or find someone to replace it the control panel.

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  • William Miller
    William Miller May 11, 2010

    It may be a shorted triac or relay on the control board, which we regularly repair nationwide by mail for $39.95 postpaid in about a
    week or so.

    But it may be as simple as a shorted hood vent fan thermostat, if so equipped.

    This is something that's pretty simple for you or a friend to check with a multimeter / test meter or continuity checker.

    First, make sure the oven is unplugged.

    Then you can remove the control panel assembly. At
    our Web site, we have a video
    available showing how to remove a typical
    over the range control panel assembly in under 5 minutes.

    There
    should be a "mini-manual" (tech sheet) hidden inside the unit
    behind the
    control panel or hidden on the left side behind the grille, which is
    very helpful when troubleshooting, testing, and locating components.



    If you find yours but you can't or don't want to do the test, you can
    send us a copy so we can see if yours has one. (If yours does not have
    the thermostat, the problem is on the control board).

    You can scan the "schematic" or "wiring diagram" page of the mini-manual at 200-300 DPI and e-mail it to us at prototech@usa.net, or fax it (in "detail" or "superfine" mode) toll-free to 866-481-2802 and include your contact info.

    If you decide to send your control panel assembly in for repair, we
    really need the entire control panel assembly - the plastic control
    panel frame, keypad, circuit board(s) and display - as shown in the
    attached sample photo.



    Feel free to contact me directly (and please remind me of your
    full model number from the tag on the unit) for more information & help.



    We're happy
    to help you. Once we have all your information and
    offer a final solution, we'd appreciate your
    thoughtful rating of our answer.



    William E. Miller, AS-EET

    prototech@usa.net
    http://www.microwavedisplay.com

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  • Kenmore Master
  • 22,184 Answers

If the light and fan come on when the door is opened normally, check the door switches.

Posted on May 19, 2017

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9047 Answers

SOURCE: kenmore microhood

Since your circuit breaker is blowing instead of the fuse, the odds are that you have a door switch, door switch mount or door hinge alignment issue.

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa.

You can probably find exploded views and order parts by entering your model number here at the Sears parts site.

There is also a chance that the high voltage capacitor is shorted.

Here is a link you or someone you know can use for test help, but read their safety warnings first:
http://www.gallawa.com/microtech/cap_test.html

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Aug 03, 2008

  • 1 Answer

SOURCE: Door inside and metal vent area smells strongly of fumes

Did you find an answer toyour question?
My microwave smells also of petrol in the same areas.

Posted on Aug 27, 2008

  • 1126 Answers

SOURCE: need installation instructions

http://www.managemyhome.com/mmh/lis_pdf/OWNM/L0411402.pdf
I could only find the owners manual. Hope this helps.

Posted on Sep 03, 2009

  • 906 Answers

SOURCE: My new microwave is completely dead

good day,
hope this link below will solve your problem.

kitchen appliances

Posted on Jul 31, 2010

  • 1 Answer

SOURCE: Kenmore 721 microwave fan turns on by itself

I have the exact same problem with my Kenmore Microwave model 721 that we bought in October of 2005. The Fan will just randomly turn itself on even when we are not cooking. It has been doing this for the last few months and is starting to become more frequent. There is no way to turn it off except to unplug it for several hours.
Was there a recall for this defect ?

Posted on Sep 28, 2010

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