Question about Whirlpool MH1150XMQ Microwave Oven

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Exhaust fan door flap

When its windy outside my microwave exhaust fan door flap opens & closes making a racket. I've increased the hood enclosure and added weights to the bottom of the door flap and it still does it. Any suggestions?

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6 Suggested Answers

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SOURCE: whirlpool model MH7100XYQ microwave, exhaust fan

sometimes the control board will short out and not let the fan or cook top light work.
if you want to try and remove the control board, look on the back of the board for any burnt off tracers. those are the wiring connections on the board that move power from a wire to a relay.
it is usually easy to see the burnt out piece, and if you can solder a new wire across where the burnt out part is, then it should work ok again.
if you cant solder, then a new control board will cost about 125-150 bucks.

Posted on Jan 30, 2009

  • 6784 Answers

SOURCE: microwave not working

HI, this is a faulty control panel. replace asap if possible.

Posted on May 29, 2009

  • 291 Answers

SOURCE: have whirlpool gold accuwave micro hood combo model# GH51884XPS5

The inspector is correct, air should be coming through the top louvers, although you sometimes will have a little air coming from the sides and back. Drop the microwave and see which way the blower is rotated, towards the louvers or towards the back or top. Some units also have a panel that blocks the venting from going the wrong way. Good Luck, Appliance Specialists

Posted on Dec 15, 2009

Testimonial: "thanks very helpful will check thanks russell"

  • 8795 Answers

SOURCE: I have a WHirlpool Hood/Micro combo MH7140XFB-0.

Did your cooktop lights fail recently? If so, then the circuit board may have been damaged by a surge. We can probably repair that for you.

Otherwise, I would suspect a shorted high voltage diode or bad magnetron.

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

mini_manual_behind_grille_small.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.

If you don't find your mini-manual, or if you want to look at it before removing the controller, you can download it here.

You can find helpful exploded view diagrams and order parts by entering your full model number (as MH7140XFB0) here.

Here are some links you or someone you know can use for test help, but read their safety warnings first:
(if it's not shorted or burned, it's probably okay)

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

Posted on May 28, 2010

  • 43501 Answers

SOURCE: fan does not work...including exhaust fan

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

Microwave Oven Basic Troubleshooting Tips



Posted on Sep 30, 2010

  • 17970 Answers

SOURCE: whirlpool gold microwave Model GT4176SPS1.

Sounds like you just need to adjust the latch assy, usually two screws you can loosen behind console and push latch assy up as hi as you can and tighten screws, sw replacement is a good idea too. There are three screws in assy. Take vent grill off, two screws, and it exposes screw holding console, pop console up and latch assy is right there to left.

Keep in mind that the door latch probably broke or one of the keepers that hold it in place broke so now the button no longer releases the door. If you remove the upper grill and then the control panel (one screw on top then slide it up) you should be able to see what is happening. But if the latch is broken or out of position, then the interlock switches will not be closing, the microwave will not heat. Check in THIS LINK the possible part replacement:

The door switch is another common problem. This switch is activated by the latch, and if it is broken the switch will not allow the oven to work.

Keep us updated.

Posted on Mar 10, 2011

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I would say you replaced a good hood thermostat (or "TCO" / thermal cutout) with a new thermostat of the wrong type.
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