Question about Whirlpool MH7140XF Microwave Oven

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Whirlpool Gold Accuwave wont heat

I burnt a bag of popcorn in the microwave last week. It worked all week and today it will not heat anything. It seems like it is working but nothing heats. If I use the sensor buttons like "popcorn" it stops and say F3H.
Thanks for help.

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  • William Miller
    William Miller May 11, 2010

    F3H means your humidity sensor has failed or is out of range.

    The
    first thing I would suggest is a hard reset. Unplug the unit for a
    minute or so. Then plug it back in, set the clock and try again.




    If that doesn't work,
    leave it unplugged for about 5 minutes. Then let us know if the hard
    reset does not fix it.




×

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Hi, there are three issues that will cause a no heat situation in a microwave. these issue are a failed Magnetron, busted cut-off fuse and, failed diode.

I recommend checking all these area that are located inside the microwave for faults.

The most common issue will be a failed Magnetron.

The diode and, fuse will be located on the noise filter assembly.

Posted on Jun 22, 2009

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Posted on Jan 02, 2017

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