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Circuit breaker popping when microwave door is open

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I would check or replace the door switches, also check for condensation on the main control panel.

Posted on Mar 20, 2011

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1 Answer

Microwave pops breaker on start


You probably have either a shorted high-voltage capacitor, or a shorted high-voltage transformer. And there is a 3rd possibility that should be checked first - the so-called "monitor switch" may be stuck in the closed position. There are usually 3 door switches in most microwave ovens, although some have 4. The monitor switch is usually the the one located in the middle of the door latch area.

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Why does my microwave Keep popping circuit the breaker?


It will pop the breaker if the breaker is overwhelmed.

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Opening the door blows the fuse


more than likely you door safety switch has a short and every time you pull the door open the connections arc and trip the breaker or blows the fuse.

Aug 24, 2009 | GE JVM1190SY/WY/AY/BY Microwave Oven

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JMC7000ADW Blows circuit breaker


I've had this problem twice with our microwave. The hint to where the problem lies is that the breaker blows when you open the door at times. Inside the microwave are three microswitches; primary and secondary interlock micro switches and an Interlock Monitor switch. The switches are supposed to shut down the microwave if it is running and the door is opened. But, I've found the upper primary switch can stick internal at times and when the door is opened the stuck switch will, because of the way it is wired as a safety switch, cause either the fuse or possibly the main circuit breaker for the oven to pop. The reason the stuck switch blows the breaker or fuse is when the door is opened the interlock switch will cause the neutral wire from the AC power to be applied to the Upper Primary Interlock switch which normally should be open when the door is opened, but if the switch is intermittent or the contacts weld themselves shut the neutral line is connected direct to the "hot" side of the power line through the fuse and thermostat. The first time my microwave failed the switch had melted the contacts together inside the switch and the second time the switch became intermittent and would blow the breaker to the over ever so often. I suspected the switch the second time this happened and utilizing an ohm meter I checked the switch several times by opening and closing the door and once in a while it would remain closed instead of opening when the door was opened. Of course while trouble shooting the power cord to the microwave must be disconnected and use all safety precautions when working around the high voltage areas inside the microwave. I wrote Jenn-Air about the bad switch and the way it is wired into the circuit, but never received any acknowledgement. I suspect these microswitches are under rated for the amount of current that passes through the switch, thus they overheat and eventually arc the contacts together. I hope this helps explain the intermittent problem and could explain many of the intermittent blown fuse problems I see in these internet help sessions

May 09, 2008 | Jenn-Air JMC7000 Microwave Oven

1 Answer

Ewave kot-131UB pops breaker


Yes, this is caused by either a bad door switch or a loose door or loose door switch mount.

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.

If you 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: http://tinyurl.com/yzjozk

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

Mar 13, 2008 | Kenmore 80412 Microwave Oven

1 Answer

Randomly blows circuit breaker while not running, only the clock is on.


.
Normally when the circuit breaker blows, it a bad door switch or door switch mount.

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
Please write back with more details if you need further help.

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

Dec 03, 2007 | GE JES1358 Microwave Oven

1 Answer

Tripping of circuit breaker


Check what other appliances are on your circuit. What goes off when the breaker is tripped. You may need to relocate the microwave to a different circuit. Try to stay away from the refrigerator or AC circuits.

Nov 03, 2007 | GE JVM1440 Microwave Oven

1 Answer

Home Circuit Breaker Pops When Door Is Opened


It does sound odd for it to blow the breaker. It should blow the fuse, not the breaker. But looking at the exploded view diagram, I don't even see a fuse! Makes me wonder if this is some foreign model. *grin* In any event, you will need to replace all the door switches since they all have been stressed by the same overcurrent. Also be sure that all the switch mount and door latch parts are activating properly when you open and close the door. The switches (generic replacements) are widely available from local appliance parts stores. If you need any other parts, you can see an exploded view and parts list here: http://www.geappliances.com/shop/prts/

Dec 16, 2006 | GE JE2160 Microwave Oven

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