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Whirlpool Micrwave, model #mh6150xls-1

My microwave will not heat, the turntable will not turn. I can select a cook time and press start and the micrwave will go thru the complete cycle, but will not heatup. What could be the prblem here. I have tested the door switch and they tested fine. Could it be the main control board. Any advice?. We are having a problem with our microwave. The turn table inside the microwave does not turn and the microwave does not heat up. It sounds like it should and runs, but no heat and no turning of turn table. We have already ordered and replaced the turn table motor, but it still does not work. Please let us know what steps to take to get the microwave working again. Thank you!

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On this model, it should be a defective secondary (top) door switch or the door switch mount.

If this switch fails to be activated, the oven will seem to run but not heat and the turntable will not work.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

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

There may 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.

I'm confident this will be a FixYa! We're happy to help you and we'd appreciate your thoughtful rating of our answer.

Posted on Aug 02, 2008

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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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From the description one of the door switches is defective, or a more serious problem has developed.

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We have a similar problem! It sounds like a problem with the microswitch inside the unit that the door is suppose to engage when closed. If not engaged properly, it will not cook. We had the switch replaced last March but it has started acting up again. We can press in on the door and/or lift it slightly and it will cook. Try putting time on the counter and hit start. It the word "cook" appears then try moving the door slightly and see if the turntable starts turning. If not, then you may have a more serious problem. Good luck!

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This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.
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 connection 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, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

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

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check magnetron related circuit and replace magneron, check condencer, diode and etc.,

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If you mean by "races" that the coooking time goes way too fast, then you may just need to reset the microwave. This is usually done by unplugging the microwave for several minutes then plugging it back in. You can also visit http://www.whirpool.com or call 1-866-698-2538 to speak with customer service. If that doesn't fix it, chances are that the integrated circuit (chip) is corrupted. Whirlpool doesn't make the chips available, so the whole control board (they may call it the "clock") would need to be replaced. If the time count sems correct, it's also possible that a sensor is bad, or maybe yopu have a bad door switch. You can do a Yahoo search for my file "doorsw.txt" to help you with the safety tips and disgnosis of door switch problems.

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Since you tested the door switches (my number one suspect) I would think you have a bad relay or a bad connection on the control panel circuit board. We repair these nationwide for $32.50, which is usually economical for most models. Just to make sure you have checked the door switches thoroughly, you can find my helpful text file called "doorsw.txt" via a Google search. It has important safety information and tips.

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