Permalink. We use cookies to give you the best possible experience on our website. It's possible that when you put your food in the microwave, liquid of some kind ran under the turntable and you then forgot to clean it up. It's rated at 15 amps and it's plugged into a 20 amp dedicated circuit. During the 1st year it quit heating and the magnetron had to be replaced (free under warranty). I read somewhere that a high voltage capacitor could be the culprit but also read that usually the case when the microwave isn't working at ALL. If you overload a circuit, your system will cut off the electrical flow to prevent circuit damage or a fire. GE Profile 2160, installed in wall. I thought that it was the outlet at first so I tried another outlet on a different breaker, same result. Our microwave keeps tripping the breaker. The magnetron sits inside the microwave's outer casing. Hiring the right company to perform electrical work in your home is the key to your satisfaction, and the safety of your home and family. The clock, timer, fans, lights, and all other functions work. A microwave oven needs its own 20 amp circuit, in order to prevent an overload. If your microwave oven blows a fuse, there are a couple possible causes. You can test the door latch using a multimeter in ohmmeter mode, first with the door in its open position and then with it closed. If it has an electrical leak, it will trip the circuit breaker. A good place to do this could be your garage because the breakers are usually set for higher amp/current rating. In my instance, most of the time mine trips the breaker when in low, and not the first time it is started. I can't imagine closing the door would draw a lot ... door it could trip a magnetic breaker before blowing the internal fuse. imported post I have a Kenmore built-in (over-the-stove) microwave oven, Model No. If Microwave is 1,200 watts, it needs a dedicated 20 amp circuit breaker, with nothing else on it, toaster s and toaster oven also should be on separate cicuits from other home appliances. The high voltage transformer amplifies the electric current so that the magnetron can operate. If I open the door on the microwave it blows the main fuse in the microwave and trips the microwave breaker in the house electric panel. It does not constitute professional advice.All information is subject to change at any time without notice. the door on the microwave trips the breaker! This will require 12/2 NM wire with a ground. Let’s have a quick solution for microwave trips breaker when the door opens. AFCI breakers, in addition to tripping due to overloads, short circuits, and ground-faults, also sense the power fluctuations that occur when sparking ("arcing") occurs between contact points in a wire connection. Personally, I will consider replacing the breaker and see if that helps, since I don't have anything else in … My Ge microwave keeps popping the breaker every time I open or close the door. Then locate the turntable motor, which will be underneath the appliance. Once the microwave exceeds that number the breaker is tripped and the electrical flow is shut off. If you are in the kitchen and using the coffee maker, the microwave, and toaster all at once, it will probably flip the 110V breaker off. Before testing this component, check your multimeter is definitely set to "Ohms Ω" and make sure you've discharged the capacitor. If the breaker is an RCD and/or breaker combined (RBCD) it may be tripping due to an earth leakage. That is the purpose of the "crobar" relay you removed which results in a "fail-safe" condition to the user at the expense of blowing a fuse or tripping a breaker, or even damaging the microwave itself. How to Repair a Microwave Oven: My microwave oven stopped working. Does this indicate that it was indeed the breaker, or could the new breaker be hiding a potentially more dangerous issue? I kept the original microwave PN JVM3160DFBB for parts when I replaced it with the same model (same model was inexpensive at around $180 and I could re-use the same mounts). You should get a value in one of the two positions of each switch (i.e. If any of the timer's electrical contacts are damaged, this could cause the circuit to trip or a fuse to blow. An Overloaded Circuit-A Faulty Appliance- Then the second microwave started blowing fuses, mostly it seemed when the door was opened while it was cooking although I can't be positive. You can check the motor using a multimeter in ohmmeter mode. In order for this type of reaction to occur, there must be one of two issues at hand: Determining the exact cause of the problem involves a few simple steps: A dedicated circuit is one which serves only one appliance, helping to protect your home and electronics. Our old microwave started tripping the breaker every 3rd or 4th time we would use it. The circuit breaker is not there to protect your microwave, it is there to protect the wires. Microwave Keeps Blowing My Fuse or Tripping My Circuit. Contact us ! I took an extension cord and plugged the microwave into another kitchen outlet and ran it. The house circuit breaker tripped twice. A Microwave Can Pull Up To 12 AMPS – Use a Dedicated 20 AMP Circuit For The Microwave: If your microwave constantly trips the breaker, check to be sure the microwave has a its own dedicated circuit. If the breaker also trips when using the kettle, perhaps the problem is the breaker or the breaker circuit and not the microwave. I can turn the light on, I can start the exhaust fan but when I run a cycle the microwave shuts off and trips the breaker. The capacitor stores energy then releases it in an amplified state. I tried other outlets and they would also trip. 721.8935090 that is about 14 years old. Now the microwave does not run at all. So, I figured it was the appliance and bought a new microwave. The information on this website is for informational purposes only; it is deemed accurate but not guaranteed. The door switches appear to be okay, tested with a multimeter to confirm. It will start, and magnetron kicks in, but it browns out and blows the breaker. There is a risk of getting electrocuted. I have a six year old Sharp R-510 AK microwave, rated at 1000 watts output, 1500 watts or 13 amps input. If Microwave is 1,200 watts, it needs a dedicated 20 amp circuit breaker, with nothing else on it, toaster s and toaster oven also should be on separate cicuits from other home appliances. If all goes well, it will run fine with the new fuse. We reset the the fuse, set the time and then open the door and the fuse goes out again. 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CHas your microwave recently begun tripping the power in your house and you don't understand why? A blown fuse is one of the most common problems a microwave can have, but that’s just the indication that something has gone wrong. By having more than one major appliance on a circuit, you run the risk of overloading the circuit and tripping the breaker. The fact that it is a problem on one circuit and not another may have to do with the senitivity of the braker which may vary from breaker to breaker. If you’re adventurous enough to open up your microwave oven and replace a blown fuse, you could be in for a bigger challenge. This investment for your peace of mind is only $159/Year, © Copyright 2010-2021 Hoffman Electrical & Air Conditioning. Here, we're going to help you work out where this problem is coming from so you can resolve it. Microwave - Tripping Circuit Breaker. I reset the circuit breaker, the fan, light, and clock all work fine. The questions are, why, and what can be done to solve the problem? Search for: microwave trips breaker when opening door. When you first open the microwave up, make sure you short circuit the capacitor using a pair of electrically insulated pliers (with the appliance unplugged from the mains of course). Follow these steps to restore power and get those appliances going again. I keep resetting the breaker. I other words, it isn't dead, something is just causing a short but I can't tell what. If a microwave or electric oven exceeds the amount of electrical current the circuit can handle, the breaker could trip. Some manufacturers also recommend installing a separate circuit for built-in microwave wall units to avoid repeated tripping. The door safety latch mechanism on your microwave contains several small switches. As I told you earlier, there might be many reasons for the microwave trips breaker while the door opens. Repeat the operation for each terminal. Your microwave's timer will be either mechanical or electronic in design. I reset it, the clock & lights worked but if we started the microwave it immediately blew the breaker. If the value you obtain is around zero, the magnetron is working correctly and is not the source of the fault. Call in an electrician if necessary. You can also check whether the motor is leaking electricity or not by placing one of the multimeter's probes (still in ohmmeter mode) on the appliance's metal chassis and the other on one of the motor's terminals. Circuits break down into two types: dedicated and general purpose. Otherwise, the breaker can trip prematurely. If it has an electrical leak, it will trip the circuit breaker. No others in the panel are labeled this way: When an appliance such as a microwave oven repeatedly trips the circuit breaker, it’s overloading the electrical circuit, which is rated to handle a finite number of amps. I opened it up, and the HV transformer was literally fried. In new houses, refrigerator and freezer often have a dedicated outlet. Interference suppressors can sometimes blow, causing them to short-circuit and trip the power or blow the fuses. If the circuit is drawing too much current, the wires heat up and cause a fire. I have a six year old Sharp R-510 AK microwave, rated at 1000 watts output, 1500 watts or 13 amps input. I do not know how else to describe the issue so I hope... - Kenmore Microwave With greater power comes greater power usage, but if your microwave is tripping the breaker in your home, it’s a sign that the appliance is overloading the electrical circuit. We recommend taking a look at the socket to see whether it might have melted. I tried other outlets and they would also trip. The 3rd time it just tripped the breaker, then the 4th time days later the fuse and breaker both blew/tripped again. Fridgidaire, Model FGMV175QFA. Fred's Appliance December 22, 2016 Service Leave a Comment. Do I need a 20 Amp breaker for the microwave? To verify the result, also check to see if there is any current leaking anywhere. If you’re adventurous enough to open up your microwave oven and replace a blown fuse, you could be in for a bigger challenge. Open up your microwave's outer casing and locate the door latch microswitches. Although it's not uncommon to see microwave ovens plugged into standard appliance outlets, larger microwave ovens can draw as much as 1500 watts, and these need their own dedicated circuits. I have a Panasonic microwave with a built in exhaust fan from around 2011. We also recommend wearing a pair of electrically insulated gloves to ensure you are able to work in complete safety. These tend to be labeled on your circuit breaker box. For some reason this seems to be an issue more common on newer models. Should I replace the 15 amp breaker with April 6th, 2017, model - Answered by a verified Appliance Technician. Clock, - Answered by a verified Appliance Technician Did it start tripping the breaker intermittently and get worse. Just as most homes are equipped with fuses or circuit breakers, microwave ovens also have fuses that short out or blow in the event of an overload. If you can't unplug your microwave, the socket and plug may have fused together, in which case you'll need to turn of the electricity supply and try applying a little force to get them to come apart. ... our microwave keeps blowing the house fuse every time we open the door. What could be causing the microwave's 20 amp fast-blow fuse to break repeatedly, and trip the breaker? It will normally be fitted just after the point where the power lead enters. We have a Sharp Carousel R426. about 2 years old. The circuit breaker is a 50 amp breaker labeled "Internal Common Trip". You should either have the microwave fixed, or replace it. Oven Trips Circuit Breaker If the electric setup in your house is tripping, an oven can certainly be one among the various reasons or just the sole reason. I've turned it back on and replugged the microwave but it trips off again. Blog ... First, let’s talk about the difference between a fuse and a circuit breaker. You can congratulate yourself on a job well done. Your microwave may be tripping the power due to an issue with its electricity supply. Before checking and testing this component, carefully read the safety instructions provided at the beginning of this article. If you take that switch out, beware that you can actually microwave yourself in the event the other relay welds together. Once the microwave exceeds that number the breaker is tripped and the electrical flow is shut off. When a microwave trips the breaker, preparing meals suddenly becomes a more difficult and drawn-out process. If the button is gummed up with residue then the microwave will trip the circuit breaker. Once the breaker is reset, and the unit is tried again, the same thing happens. Carrying out repairs on a microwave oven requires a very careful and safety conscious approach. It worked fine for about a week but now it's tripping the breaker. Clock, - Answered by a verified Appliance Technician A blown fuse really means one of your electrical components has broken or failed, and the next step is to find out which piece that is. SOS Accessoire cannot be held responsible for any accidents that may occur. The highly trained, certified electricians at Hoffman Electrical & A/C have been solving issues with kitchen wiring and overloaded circuitry since 1989. if you don't obtain a value, the capacitor is defective. Sharp microwave blowing circuit breaker (too old to reply) JW <> 2003-08-27 12:45:23 UTC. Our Whirlpool GH5184XPS7 over the stove microwave & hood blew the dedicated circuit breaker. I tried it on an other circuit with the same results. Breakers and labeling in breaker box. By Vet300 - 3/7/2017 9:16:10 AM I have an OTR microwave LG model LMV1920DW that was blowing the breaker on start up. Never test and use a multimeter on the appliance with it still plugged into the mains. When I moved into my house, the microwave was not working, and GE "repaired" it. Unplug the microwave then clean that button with a Qtip and alcohol and press the button in and out a few times to free it up again. I spent 6 years in the Navy as an Aviation Electronics Technician and also taught electronics at a trade school for several years after getting out so I now my way around a switch and how to test them. Due to this stacking, the HV diode cannot be checked with a multimeter. You can see it circled here in this unfortunately grainy picture. Even when unplugged, the capacitor inside the microwave oven can still produce power electrical discharges. Contact us for complete details. You should either have the microwave fixed, or replace it. I have a Whirpool GH5184XP microwave / oven hood combo, that blows the circuit breaker only when the cooking function is started. Give us a call at (866) 238-3243, or contact us online. When START is pressed, however, the microwave runs for half a second before the circuit breaker … This may occur, for example, because of loose … It seems to happen as soon as I want to "nuc" something by pressing start. Replace the magnetron if your tests prove it to be defective. So, I figured it was the appliance and bought a new microwave. Single are usually for 110V and double are for 220V. It is powered by the electrical current supplied to the appliance and emits electromagnetic waves. If the problem continues, call an electrician. If I open the door on the microwave it blows the main fuse in the microwave and trips the microwave breaker in the house electric panel.
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