Question about Whirlpool MH1150XMQ Microwave Oven

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I have a MH6150XMQ Whirlpool Micro and the light comes on with the fan but it does not heat nor does the turntable rotate. The turntable is turned on via the front push button. How can I troubleshoot this problem to identify the defect. This happened after a thunderstorm.

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  • Tom Martin Oct 18, 2011

    William-Will the fan and light still come on if a door switch is bad or loose?

    The light comes on when the door is opened and both the light and fan come on with the door closed and the micorwave started. However, the oven does not heat nor does the turntable rotate. The turntable On/Off button does not beep or activate the device when pressed.

    I just want to confirm that a door switch is the culprit before disassembly.

    Thanks for your help.

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  • Whirlpool Master
  • 8,973 Answers

While the turntable can be prevented from running while cooking if you turn it off with the keypad, that's probably not relevant here.

This problem is usually caused by either a bad upper door switch or a loose door switch mount, which are pretty simple problems to fix.

My help file on door switches is here.

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.

I have a MH6150XMQ Whirlpool Micro and the light - mini_manual_behind_grille_small.jpgdee77f7.jpgAt our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

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

Posted on Oct 18, 2011

Testimonial: "William nailed it. The upper door switch would not work when the door was closed. Open it the smallest bit and it worked. The connectors were colored blue from excessive heat. The middle switch worked but had blue connectors too. I have ordered replacements for all 3. Thanks William"

  • William Miller
    William Miller Oct 18, 2011

    > Will the fan and light still come on if a door switch is bad or loose?

    Yes. The top door switch on this model supplies power to both the turntable and the high voltage section of the oven.

    If the switch is not being activated, the symptom will be that everything works except that it will not cook and the turntable will not come on.

    Also, the stirrer motor will not come on, but you'll not notice that unless you run the oven without the stirrer cover in place.

    See marked tech sheet excerpt here:
    http://031d26d.namesecurehost.com/mwd/mh...

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