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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.

Posted by Anonymous on

  • 4 more comments 
  • 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

William Miller

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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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Hi I have a Sanyo Convection Microwave EM-C5779V and when the timer goes off the fan seems to continue to run and won't turn off when I hit the cancel button and have to turn it off at the wall.Help?

the fan may keep running to keep it from overheating until it cools down, if you let it go and it shuts down eventually should be no problem, maybe 3 to 5 minutes it should shut down. fan running is not dangerous however if it never stops then the fan will wear out

KitchenAid KCMC155J 1000 Watts Convection / Microwave Oven - how to change the light bulbs - can this be done without having to call a tech?

The service number for this microwave is 1-800-422-1230. I have seen this question posted on several sites with no answers. Also, I checked the Owner's Manual and I do not see an answer to this question. If I had to guess, I would say that if there is no access from the inside of the microwave, you may have to remove it from the wall as the access might be on the back of the unit.

No longer heating up on the microwave.


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips



Microwave still runs when door is open

Is this by any chance a combination microwave? It is is-what you are hearing/seeing is the fan running to cool it down. If it is not a combi then indeed you hav a problem-probably linked to the door catch.

Microwave high intensity light turning bright orange

You have a shorted grille relay on your control board. I can repair this for $69.95, which includes insured return shipping.
For details and more free DIY and other help & advice, feel free to contact me.

William E. Miller, AS-EET
[email protected]
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Microwave/Convection Oven has mind of its own: turns to Crisp mode on its own.

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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