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Anonymous Posted on Feb 20, 2008

Over the range MV Oven shuts down from heat

Hi, I have a new Maytag MMV1153BAW P/N 8102P27160
When using with vent (ducted to attic) on high, it will shut down after a few minutes. It will also shut down or not work if the range below is cooking. It is in our vacation home and hasn't been used over 10 times. It eventually resets itself after hours and hours, but will shut down even when heating up coffee in a coffee cup. Thanks

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  • Master 958 Answers
  • Posted on Feb 21, 2008
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It is triggering the overtemp switch. try to check the vent outlet, it could be clogged with dirt. or the cooling fan of the magnetron is no longer running. could be stuck up because of not being used for a long time.

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Ge spacemaker xl-1800 microwave shuts off if used longer than 3min.

That would be model "JVM1540SM1SS".

This is due to overheating of the magnetron.

Attached to the magnetron is a thermostat, which opens to interrupt power if the heat gets too high. Then when it cools, the thermostat closes, restoring power.

An overheating magnetron can be due to:
  • operating oven without cover(s) in place
  • wrong magnetron installed in oven
  • an old or otherwise failing magnetron
  • cracked magnetron magnet
  • improper power line voltage (should be 110-125VAC)
  • foods low in moisture (popcorn & bacon, e.g. - add 1/2 cup of water in rear oven)
  • failed or inoperable cooling fan or hood vent exhaust fan
  • deteriorating foam weatherstripping seals in air ducts or on outside cover
  • blocked air vents (dust, animal nest debris, insufficient free air space behind & around oven, etc.)
  • clogged or greasy charcoal filter or grease filter
  • blocked duct in hood vent exhaust
There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

0833cec.jpg

At
our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
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We have a model # mmv1153bas over the range microwave. When heating or cooking items longer than a couple minutes the unit shuts off and remains off for at least 1 hour. It is not the breaker or the plug...

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

An overheating magnetron can be due to:
  • operating oven without cover(s) in place
  • wrong magnetron installed in oven
  • an old or otherwise failing magnetron
  • cracked magnetron magnet
  • improper power line voltage (should be 110-125VAC)
  • foods low in moisture (popcorn & bacon, e.g. - add 1/2 cup of water in rear oven)
  • failed or inoperable cooling fan or hood vent exhaust fan
  • deteriorating foam weatherstripping seals in air ducts or on outside cover
  • blocked air vents (dust, animal nest debris, insufficient free air space behind & around oven, etc.)
  • clogged or greasy charcoal filter or grease filter
  • blocked duct in hood vent exhaust
We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

It is vital that the cooling fan runs, or the magnetron will be destroyed. Repeated shutdowns like this are endangering the magnetron, assuming it's not bad already.

Your owner's manual will cover checking the filters and will cover warranty terms. The magnetron may still be covered.

If for some reason you don't have your manual, you can download it here.

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

William E. Miller
[email protected]
http://www.microwavedisplay.com
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CHECK THE EXTRACTION VENTS FOR OBSTRUCTION IN THE CAVITY AND EXTERNALY
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No... you are not in a microwave induced time warp...
Your microwave oven needs a "reboot". The same thing happened to me.
Unplug your microwave oven, wait about a minute (more or less), plug it back in. Try setting/running your kitchen timer, boil water, etc. Your timer software on the microwave should be reset.
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Yes, the mouse was probably attracted to the warmth and food odors in the duct work and may have gotten trapped in the vanes of the fan and died. I'd act fast...

The best bet is to remove the oven from the wall, or almost from the wall, so you can see the area of the hood vent exhaust fan.

This is safer with two people and the installation instructions will be of great help.

You can download GE owner's manuals and installation instructions here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
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Your magnetron is overheating and tripping the thermostat, which interrupts power until it cools.

Since 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.

You can find your nearest Maytag-authorized servicer here.

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Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

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