Question about Whirlpool WMH31017AW 1.7 cu. ft. Over-the-Range Microwave Oven with 220 CFM Vent System, 2-Speed Fan, 1,000 Watts, 2 Stage Cooking and Blue LED Display: White

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I have a 2012 whirlpool microwave over the range oven it WMH31017AS model will not heat what could that be

It won't heat the table turns and the lights work but won't heat

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  • Contributor
  • 21 Answers

Its the high tension fuse .9 size its long

Posted on Nov 11, 2014

Testimonial: "thank you Bobby for your answer it turned out to be the magnetron it was bad so glad it was under factory warranty so they payed for it."

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6ya6ya
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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: Microwave ahs power but doesn't heat.

The most common causes for a lack of heating are a bad door switch, a loose connection on the magnetron, a bad magnetron, bad connection on the control circuit board, a bad relay on the board, bad high voltage diode, or bad high voltage transformer. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383

Posted on Sep 28, 2007

MicrowaveSvc
  • 9047 Answers

SOURCE: Whirlpool Microwave Model MH7130XEZ-2

Generally, the most common causes of a failure to heat are:

 

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose conneciton on the control unit circuit board
- bad magnetron or other high voltage part

 

At our site, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information.

 

See our listing here on FixYa: http://tinyurl.com/yzjozk

Posted on Oct 22, 2007

bestdarngood
  • 3037 Answers

SOURCE: My microwave does not heat anything. The touchpad, exahustfan, light works. The motor turns on and turn-table works for the number of mins specified but does not warm up the stuff. Please help!

Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

Posted on May 26, 2009

  • 2468 Answers

SOURCE: whirlpool model number MH7140XFB no longer heats

you either need a new h.v. capacitor or h.v. diode in the magnetron circuitry if you cant hear it cycle when it runs as in a low pitched hummmm when its drawing current to operate the magnetron tube, each part runs about $30 to $45 each,normally its the h.v. capacitor though

Posted on Jul 28, 2010

heatman101
  • 43501 Answers

SOURCE: Whirlpool MH7140XFQ-1 microwave no longer heating

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

Microwave Oven Basic Troubleshooting Tips

heatman101
kggk

Posted on Sep 30, 2010

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Shows code FIE4 on panel.


If you wish to get some details about microwave oven repair and service ; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

May 25, 2016 | Whirlpool WMH31017AS 1.7 cu. ft. Microwave...

1 Answer

Manual for a whirlpool microwave oven model wmh31017aw-1


There is no turntable control. It is always on. The turntable should change direction each time the unit is used. If the turntable is not operating, it has malfunctioned. Newer microwaves for the most part all have full-time turntables to promote even heating, thus reducing customer complaints about ovens that don't heat right.

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I have a whirlpool microwave model WMH31017AS1 it turns on but heat up is there anything i can do


All microwaves have a door open switch that keeps the magnetron from producing microwaves; this could be your problem. Most microwaves have a fuse hidden in the wiring that blows on overload like a lot of food spatter inside. They also have thermal overloads which may or may not self reset. If it died with a big flash you may be out of luck, if not you may be able to locate the fuse or thermal limit and replace it. Another sneaky part is a one time combination temperature and current overload called a thermal fuse:
51cl8ujqerl._sl1100_.jpgThese thermal fuses are marked in amperage and degrees Celsius and Amazon carries them.
Self resetting thermal overloads look like this Amazon # B00DM8JGQQ which is a Whirlpool part:
61udcxeol-l._sl1500_.jpg
I didn't find a wiring diagram on line for your model, but you may be able to find one; whirlpool generally is pretty good with documentation. Most microwave manufacturers keep consumers as far from doing their own repairs due to the possible dangers involved.
Appliance Parts Store has a pretty good selection of replacement parts
WMH31017AS Parts

Jan 30, 2015 | Whirlpool Microwave Ovens

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My Whirlpool WMH31017AS when I plug it in the light comes on and the carousel slowly turns. Buttons don't respond either. It's 14 months old with a 1 year warranty.


I have three customers describe the exact scenario on this MW but was never able to duplicate while on site all three were in warranty I changed the door switches and control board at 14 months they may pay for a service call to have it diagnosed

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

Microwave Oven Basic Troubleshooting Tips

heatman101 ';

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

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heatman101
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PLease open the housing of turn table motor at bottom of the oven and check for the AC input voltages on motor terminals as specified on sticker on motor. for no heating please check fuse between high voltage transformer and high voltage capacitor. Also check high voltage Diode and Magnetron.Please please don't try to measure voltage on terminals of magnetron.

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