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Microwave trips breaker when steam builds up

When cooking something that has steam build up during the cooking process, the circuit for the microwave trips, have been able to reset it, but today after resetting the breaker the microwave wont power back on.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Whirlpool Microwave excessive grease build up

Whirlpool MH1150XMB-1

Posted on Apr 21, 2008

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MicrowaveSvc
  • 9085 Answers

SOURCE: kenmore microwave wont heat food

I would suspect you have a failed high voltage transformer or maybe magnetron.

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

You can usually find exploded views and part prices by entering your FULL model number here: http://www.searspartsdirect.com

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

Posted on Jun 08, 2008

MicrowaveSvc
  • 9085 Answers

SOURCE: microwave won't heat

Sorry my Clarification Request came out as a single blob of a paragraph.

That's not how I typed it. I never write that way!

So I've pasted it here, but as a solution.



Magnetrons generally should last about 2000 hours, but several factors can shorten that.

If it's not OVER ten years old (from the purchase date or the date on the tag inside the unit) then the magnetron is still under warranty.

From the owner's manual:

"For the second through the tenth year from the date of original purchase

"The magnetron tube, if the magnetron tube fails due to a defect in materials or workmanship. During this nine-year limited warranty, you will be responsible for any labor or in-home service costs.

"For the above limited warranty: To avoid any trip charges, you must take the microwave oven to a
General Electric Customer Care® servicer and pick it up following service. In-home service is also
available, but you must pay for the service technician’s travel costs to your home."


GE Customer Service is here, and you can verify the warranty status and find your nearest authorized servicer.

If you're sure the magnetron's bad, it's still under warranty, and you or a friend are handy, they will send you the magnetron to do it yourself. Call them at 888-239-6832.

Be persistent. You may have to speak with a supervisor.


It does sound like the magnetron overheated and the magnetron's thermostat opened until it cooled down.

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
Since yours is a counter top model, there are less of those factors to worry about.

When you hit Start to microwave, do the inside light, cooling fan, and turntable all come on?


Any unusual noises? Is it louder or quieter than usual?

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

You can find helpful exploded view diagrams and order parts if needed by entering your full model number from the tag on the oven here.

Let us know what you find out or decide.

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

Posted on Jul 07, 2009

Gort007
  • 1187 Answers

SOURCE: microwave trips circuit breaker when plugged in

The circuit is probably a 20Amp circuit (see the number stamped on the circuit breaker switch). Most likely, it is the same circuit as the refrigerator, crock pot, window A/C unit, etc....

Also, if you are using an extension cord or a power strip or a surge protector. Those may not have a high enough power rating.

One other possibility (not likely) is that the circuit breaker is a 15Amp and the microwave is 1500 watts.

What else is cut off when the circuit breaker is tripped?

Solution is to use a different outlet for the microwave, or turn off any other applicance in the same circuit (except the refrigerator, of course).

Hope this helps!

Posted on Sep 16, 2009

Treefrog15
  • 127 Answers

SOURCE: How do you reset the microwave power? Is there an

There is an internal cartridge fuse, as well as thermal fuses. It is not recommended that you attempt any internal repairs on a microwave due to the presence of very high voltages and the danger of microwave radiation if not reassembled correctly. Residential microwaves, if not under warrranty, are generally considered disposable. Parts and service are very expensive.

Posted on Feb 25, 2010

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1) Something in your oven is either malfunctioning (difficult to find and replace). It is likely better to just replace than pay to have it fixed.

2) The house circuit that you are using is not providing enough power to the microwave. Check if something else is connected on the same circuit. A microwave runs poorly when not getting the full 115 volts that it was designed for and may fall into a safe mode and shut down for a while.

Newer houses should have the microwave on a dedicated circuit and should not have this problem - I say should not because electricians can make mistakes too.

You can try to trip your microwave circuit and see if anything else stops working. If so, that is likely why your microwave is falling into a safe mode - it is not getting enough juice.

If you have an older home (pre 1995), try to find what else is on your microwave circuit by tripping the breaker as listed above, then not using the other appliance when using the microwave.
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First you should be sure the ventilation is correct through the oven.

If you don't feel air through the vents when it's running, that needs to be addressed.

Also, it's important to wipe off the interior surfaces whenever moisture seems to be accumulating.

Also, it's recommended to leave the door open a few minutes after cooking to allow it to dry.

Please feel free to contact me directly if you need more help.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

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