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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MicrowaveSvc
  • 9042 Answers

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: 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.

Posted on Feb 25, 2008

  • 204 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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1 Answer

Trip Circuit Breaker


The circuit breakers may both be functioning properly. What might be happening is that both circuits have other current drawing appliances on them. The circuit breakers react to the sum of all of the currents drawn by all of the devices on that circuit. So, if you have a 15 amp microwave and an 8 amp refrigerator on the same circuit, you would overload a 20 amp circuit by 3 amps.

Apr 14, 2014 | LG LMV1813ST Microwave Oven

1 Answer

Microwave keeps tripping circuit breaker


Chances are you have a shorted "monitor" interlock switch, or its mount is broken.

See this door switch help file.


You can find links to helpful exploded view diagrams and part ordering help here.



To give you more specific help, we would need the brand name and

full model number of your microwave.


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

Aug 30, 2012 | Microwave Ovens

1 Answer

Machine will not turn on


from online Microwave Repair Manual: Totally dead oven (no lights, no clock, no display, no fan, no heat...)First, check power to the outlet using a lamp or radio you know works. The fuse or circuit breaker at your service panel may have blown/tripped due to an overload or fault in the microwave oven or some other appliance. You may just have too many appliances plugged into this circuit - microwave ovens are high current appliances and should be on a dedicated circuit if possible. If you attempt to run a heating appliance like a toaster or fryer at the same time, you *will* blow the fuse or trip the circuit breaker. A refrigerator should never be plugged into the same circuit for this reason as well - you really don't want it to be without power because of your popcorn!

If you find the fuse blown or circuit breaker tripped, unplug everything from the circuit to which the microwave is connected (keep in mind that other outlets may be fed from the same circuit). Replace the fuse or reset the circuit breaker. If the same thing happens again, you have a problem with the outlet or other wiring on the same branch circuit. If plugging in the microwave causes the fuse to blow or circuit breaker to trip immediately, there is a short circuit in the power cord or elsewhere.

The microwave oven may be powered from a GFCI outlet or downstream of one and the GFCI may have tripped. (Removing a broken oven lamp has been known to happen.) The GFCI outlet may not be in an obvious location but first check the countertop outlets. The tripped GFCI could be in the garage or almost anywhere else! Pushing the RESET button may be all that's needed.

Next, try to set the clock. With some ovens the screen will be totally blank following a power outage - there may be nothing wrong with it. Furthermore, some ovens will not allow you perform any cooking related actions until the clock is set to a valid time.

Assuming these are not your problems, a fuse has probably blown although a dead controller is a possibility.


While you can do some repairs on your microwave, what you don't know can kill you... even on an unplugged microwave, so make sure you understand the dangers and how to reduce them before you try anything inside a microwave. If you want to do more yourself, go to the link at the top of this post.

Oct 21, 2010 | Microwave Ovens

1 Answer

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.


http://www2.panasonic.com/consumer-electronics/support/Home-Appliances/Microwave-Ovens/Genius/Prestige/model.NN-P295SF
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. http://www.eserviceinfo.com/downloadsm/5734/PANASONIC_NN-K652.html

May 04, 2010 | Panasonic NN-P295SF Microwave Oven

2 Answers

Blowing 25 amp fuses


In that case the outlet your using is pushing out too much electricity. Try calling your local electric company for help or a professional electric repair man.

May 21, 2009 | Emerson Black Microwave Oven

1 Answer

I pluged the microwave in it was working and when I pushed it back and when I looked at it it waqs not working any moren mdl # is 87449 kenmore counter top microwave


Check the outlet it is plugged into. Remove the microwave plug. If you don't have a voltage meter handly to test the voltage at the outlet or the continuity of the microwave plug, I would suggest you plug in a lamp from your living room into the outlet. If it doesn't work, either the outlet is a tripped (GFIC) Ground Fault Interuption Circuit outlet or the circuit breaker tripped in your electrical panel box or the microwave cord is damaged and caused a short and blew the fuse. To check these I would try plugging the light in and press the red reset button located on the wall outlet or flip tripped circuit breaker in panel. If it's a damaged cord or fuse, you can visit this web site for Sears parts www.searspartsdirect.com If you found any of these suggestions helpful, please rate my solutions. Thanks D. Lange

Apr 23, 2009 | Microwave Ovens

3 Answers

Microwave lost all power when I pressed start


Plug a lamp into the circuit where the Microwave is plugged in. If the lamp comes on then you know there is power supplied to the microwave and the problem is one of an internal nature. If your light does not come on then your breaker at the main power panel could have tripped. On each breaker is a number which is its rating in amps. Your Microwave may require a 20 amp circuit.

May 11, 2008 | Kenmore 62642 / 62644 / 62649 Microwave...

3 Answers

Wont turn on


If it blows the fuse as soon as you hit the START button, it's almost certainly a shorted high-voltage capacitor.

If it blows a few seconds after you hit the START button, it's probably the high-voltage transformer. You'll possibly also smell a faint electrical burning smell from the rear vent after you shut if off.

If it blows the fuse as soon as it's plugged in, you probably have a shorted door switch, a shorted varistor, or an internally exposed wire shorting to the chassis, etc.

Nov 11, 2007 | Frigidaire GLMB209D Microwave Oven

1 Answer

Microwave blows fuse


The most common suspects are the high voltage transformer and the magnetron. It's also possible you have a flaky door switch or loose door switch mount. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383

Jun 07, 2007 | Roper MHE14XKB Microwave Oven

2 Answers

Sharp R-1450 Microwave Oven


The most common suspect here is a shorted high voltage capacitor, since you say it blew the fuse right after Start, but I would certainly suggest checking the door switches and door switch mounts first. Just be sure you installed the right fuse. It would be a The switch mounts seem to break at about this point in the life of these models. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://www3.sears.com (the three is correct)

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