Question about Frigidaire PLMV169DC Microwave Oven

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As soon as you push the start button it trips the breaker

Out of the blue our microwave now trips the fuse panel breaker when you push the start button to try and heat something. The unit is not quite 2 years old and not sure about the warranty yet so thought i would see what i could find out about troubleshooting the problem.

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  • Anonymous Nov 21, 2008

    As soon as I push the start button it trips the breaker

  • jcarroll678 Dec 08, 2008

    My baked potato sensor will burn a potato to a crisp in a matter of minutes. The smoke detector goes off and the circuit safety outlet in the room had to be replaced. There is definitely a problem with this model. My microwave was 15 months old. Estimate to repair $ 517.39 not counting the $ 70.00 for a repair order. I have all Frigidare appliances in my kitchen. I hope this was not a mistake.



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Posted on Jan 02, 2017

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SOURCE: microwave just quit working i thought maybe it was a breaker but it wasn't

A microwave can be dead for many reasons.

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.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa:

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

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

Posted on Feb 25, 2008

  • 211 Answers

SOURCE: microwave / Frigidare PLMV

What size breaker is protecting the circuit? Per the National Electrical Code, a microwave and a washing machine should each have their own dedicated circuit (and own breaker) rated at 20 amps. Also, if the breaker is old and has tripped many times due to continuous overloading, it may be weakened and could be tripping at a lower amperage than what it is rated. I would try the following:

1. If possible, test the microwave on another circuit and see if it trips that breaker. If possible, use a 20 amp circuit for the test.

2. If you're comfortable with working in an electrical panel safely, place a clamp on ammeter on the hot wire of the affected circuit in the panel and see how much current is being drawn when the microwave is on.

3. If you would rather stay out of the panel, get an inline ammeter/watt meter and plug the microwave into this. If the rating of the microwave is less than 15 amps (1800 watts), you may be able to use a device called a kill-a-watt at a local hardware store. This will show how much power is actually being used by a given appliance.

Posted on May 28, 2009

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See this door switch help file.

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Pushing the start button trips the breaker. All functions seems to work, fan, clock etc but it just started as soon as you push start it trips the breaker. Control panel/board seems fine no burn marks.
In all likelihood the mangnetron has failed, or perhaps even the Power Supply. or a fault that is shutting the system down for safety reasons You need to have it serviced by a reputable service centre/man. Ensure you get a firm "Quote" before proceeding, and remember these days the cost of repair can equal or exceed the price of a new one.
Service manual below, troubleshoot with that.

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