Question about Whirlpool MH1170XS Microwave Oven

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Whirlpool microwave intermittent heat

Heats sometimes and not others ,there is no unusual smell or sound. when working you can see the light dim a little after a couple seconds but this does not happen when it fails to heat

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9098 Answers

SOURCE: GH7145XFB-1 not heating properly

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

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

Posted on Nov 17, 2007

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MicrowaveSvc
  • 9098 Answers

SOURCE: Whirlpool Microwave No longer Heating Food

The most common cause of that is a shorted or blown high voltage rectifier diode.

If you or someone you know wants to look into this, we have critical safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

More info here: http://www.gallawa.com/microtech/diode.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jul 04, 2008

scottowa
  • 87 Answers

SOURCE: Whirlpool MH1150XMQ 1000 Watts Microwave--NO HEAT

About 95% of the time it is the magnatron. If the microwave is under 5 years old that part is often covered under warranty. I would check your manual. If not the p/n is 8206335 and it's about $80 and fairly easy to install. I just looked and the magnatron is covered.

http://www.managemyhome.com/mmh/lis_pdf/OWNM/L0523111.pdf

Labor to replace it would be about $125

Posted on Mar 04, 2009

ginko
  • 19396 Answers

SOURCE: whirlpool velos model gh7208xrs-1 will start but it does not make

Check contacts to control board first.

If control board is OK then test the high voltage capacitor,the rectifier diode.or the magnetron. If all this are fine, test the control board.

Thediode and capacitors can br tested. The capacitor must bealloweddischarge before testing, or you risk to get electrocuted, evenifpower is off. Capacitors can get discharged by shorting theirtwocontacts.
Before replacing the magnetron test also the control board.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.



All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

Posted on Apr 27, 2009

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

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SAFTY FIRST

UN -PLUG IT,,,,, THAT "FUNNY SMELL" SOUNDS LIKE IT IS SHORTING OUT
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Whirlpool Model #MH1170XSS-0 will not heat


Since FixYa is not currently notifying us Experts when Clarification Requests are answered, you will need to post a NEW help request.

I
n your new post, please include your brand name and the full model number from the tag in or on the unit and your symptoms, as well as the answer to the following questions:

- When you try to microwave are the inside light, internal cooling fan and turntable all working?

- Is there any unusual noise or is it louder or quieter than normal?

(A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.)

We have a sound clip here of what a microwave should sound like when the cooling fan and high voltage section are working.


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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

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sounds like the hi voltage diode or capacitor are intermittant, the thump is the transformer drawing current when the magnetron tube calls for hi voltage to operate, you will see the lights dim slightly every time it cycles the mag tube for heat

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Doug, not not attempt repairs on your m/wave unless you have had training.
When you take off the cover even with the plug turned off, their is still charge inside the m/wave which could kill you!
sounds like the magnetron may be faulty, get your approved engineers to carry out a' power check' on the magnetron etc,

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