Question about KitchenAid KCMC155J Convection/Microwave Oven

2 Answers

KitchenAid KCMC155J Seems like the Microwave Fan runs continuously and won't stop nor will it turn off when hitting the cancel button. You can program cooking or set a time for heating something, that will work.. when the time runs out..the fan continues to run. Only stops when opening the door. Once door is shut the fan starts again.

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  • Anonymous Mar 13, 2007

    I just got a reminder to rate this solution. I have not rated it yet.... because I don't know yet if it is correct..nor how to repair it myself.... a repair company is coming...

  • Anonymous Mar 16, 2007

    A damper switch was found to be stuck.

  • Anonymous Mar 22, 2014

    As the plus inserted into the power outlet and the door is closed,the device continue running regardless. Depress the stop/ cancel PB
    The device goes off only with door open

  • Anonymous Mar 30, 2014

    I changed the magnetron and diode on my Micro. unit was working on test-heated up water. about the fourth time, the fan and light started automatically when the door shut. No heat and the carousel doesn't turn. Cancel button doesn't work

  • Anonymous Mar 31, 2014

    the switches seem to work,but the fan will not startup,on any speed.

  • Anonymous Apr 01, 2014

    Vent fan runs constantly after replacing Thermal Switch I've set the time and can use the microwave but vent fan continues to run



2 Answers

I don't know how to turn up the cooking heat on my chef mate microwave

Posted on Dec 23, 2007


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  • 9,179 Answers

Sounds like a classic bad door switch or switch holder. If you or a friend decide to work on it, we have *critical* safety info, info on door switch testing and replacement, and oven disassembly info at our site, which is linked at our listing here on FixYa: You can find helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here:

Posted on Mar 11, 2007

  • William Miller
    William Miller Mar 13, 2007

    By the way, my answer presumes you're talking about the internal cooling fan, not the hood fan.

    Hood fan trouble is usually a failing thermostat inside the oven.



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Posted on Jan 02, 2017

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You have a shorted grille relay on your control board. I can repair this for $69.95, which includes insured return shipping.
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William E. Miller, AS-EET
[email protected]
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Yes this is a touchpad issue. As you have noted the crisp button is stuck and this is the cause of this. You can try removing the keypad and push up the pressed button. If its jammed then replacing it is the only way.

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