Question about Whirlpool MH1160XS Convection/Microwave Oven

1 Answer

Won't cook but everything works like it should

Whirlpool MH1160XS, about a year old. I heated up chicken tonight for dinner, good and hot. Then the next use, no heating of food. Display, lights, turn table all work fine. Even cooked at 50% power, to listen for waveguide load to cycle on and off, heard that too. Unplugged the unit, waited, then tried again. No change. Thanks, Scott

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  • springerscot Jul 16, 2008

    correction, listen for MAGNETRON load to cycle on and off, heard that too.

  • springerscot Jul 21, 2008

    Great info, thank you very much. It is over a year old, about 15 months. Frustrating, pay good money for it for it to break so soon.

  • springerscot Nov 04, 2008

    I finally got of my lazy **** to pull the microwave out and test the magnetron. Ohm readings indicate a good magnetron. Terminal to terminal on lowest ohm setting is less than one, terminal to mag housing on highest setting is infinity. What now?

  • Anonymous Mar 10, 2009

    Same thing, everything works except for the heat. about 1 1/2 years old.

  • Anonymous Apr 23, 2009

    Same exact problem...



    I've had the microwave for a little over a year and about 2 weeks ago it stopped cooking. It sounds like it is doing something, but no heat. Lights, vent, timer all work.

  • Jigar May 14, 2013

    same problem, everything works except heating. it also don't turn off.

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  • Whirlpool Master
  • 8,820 Answers

Good idea to run at half power. Good thinking. That can sometimes reveal an overheating magnetron.

Does it seem to buzz or hum louder than normal?

If so, you may have a shorted high voltage diode or a bad magnetron. If not, I only suspect the magnetron.

If it's less than one year old, it should be fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

We have critical safety & disassembly info (including a how-to video) at our site, linked here.

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.

Whirlpool customer service is here.

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

Posted on Jul 19, 2008

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