One of the most common problems with a microwave is tripping a breaker. 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. It does not constitute professional advice.All information is subject to change at any time without notice. Secure payment Credit Card, PayPal and bankwire, Fast delivery International home delivery, Money-back guarantee Free returns : 30 days to change your mind. I have a Whirpool GH5184XP microwave / oven hood combo, that blows the circuit breaker only when the cooking function is started. If the breaker is an RCD and/or breaker combined (RBCD) it may be tripping due to an earth leakage. If you overload a circuit, your system will cut off the electrical flow to prevent circuit damage or a fire. Should I replace the 15 amp breaker with 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 the microwave oven doesn’t trip the breaker, you’ll need to have a dedicated circuit installed to prevent further issues. Search for: microwave trips breaker when opening door. 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. if you don't obtain a value, the capacitor is defective. I reset the circuit breaker, the fan, light, and clock all work fine. 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. In my instance, most of the time mine trips the breaker when in low, and not the first time it is started. 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. Why Does My Microwave Keep Blowing Fuses? If you are qualified to do work in your breaker box (DO NOT IF If any of the door latch hooks is broken or any of the switches is faulty, the appliance will not operate. When START is pressed, however, the microwave runs for half a second before the circuit breaker trips. These tend to be labeled on your circuit breaker box. If this happens, your microwave will not be able operate. GE Profile 2160, installed in wall. Call in an electrician if necessary. In simpler terms, this means the microwave has its own circuit breaker. Contact us for complete details. Fred's Appliance December 22, 2016 Service Leave a Comment. 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. Disconnect the connectors from the capacitor then place the tips of your multimeter's probes (in ohmmeter mode) on each of the capacitor's terminals. In new houses, refrigerator and freezer often have a dedicated outlet. We therefore recommend you leave the appliance to discharge for at least one day before taking it apart. To verify the result, also check to see if there is any current leaking anywhere. Fred's Appliance December 22, 2016 Service Leave a Comment. 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. I have an OTR microwave LG model LMV1920DW that was blowing the breaker on start up. If the button is gummed up with residue then the microwave will trip the circuit breaker. ... our microwave keeps blowing the house fuse every time we open the door. Important: do not forget to follow the safety instructions provided at the beginning of this troubleshooting guide. In the past it only happened when I used the microwave oven and the toaster oven at the same time. If the HV diode is short-circuiting or leaking electricity, your appliance may make a loud noise and could end up blowing the fuse or tripping the circuit. It's rated at 15 amps and it's plugged into a 20 amp dedicated circuit. If you do, this component will need to be replaced. The capacitor stores energy then releases it in an amplified state. 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's plugged into a GFCI receptacle that is the only receptacle on a 15 Amp breaker. You can contact us via e-mail if you have any questions ! The clock, timer, fans, lights, and all other functions work. When START is pressed, however, the microwave runs for half a second before the circuit breaker … Call the experts at Hoffman Electrical & A/C for a free estimate, or if you’re uncertain whether or not your microwave oven has its own dedicated circuit. Clock, - Answered by a verified Appliance Technician Before testing this component, check your multimeter is definitely set to "Ohms Ω" and make sure you've discharged the capacitor. Begin by disconnecting the microwave from the electricity supply and discharging the capacitor. We have a Sharp Carousel R426. Before checking and testing this component, carefully read the safety instructions provided at the beginning of this article. SOS Accessoire cannot be held responsible for any accidents that may occur. Issue was the fuse kept blowing every time the door was opened while the microwave was operating. The door safety latch mechanism on your microwave contains several small switches. Reasons Why Your Microwave Is Tripping Your Breaker 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. If you’re adventurous enough to open up your microwave oven and replace a blown fuse, you could be in for a bigger challenge. The microwave oven needs a dedicated 20-amp, the 120/125-volt circuit to feed it. Never test these components without first disconnecting the appliance from the electricity supply and discharging the capacitor. Note, the one to its right and the pair below are also labeled "Internal Common Trip". Blog of cold water for 2 minutes at 100% cooking power. The door switches appear to be okay, tested with a multimeter to confirm. Do not test the capacitor unless you've first disconnected it from the electricity supply and discharged it by short-circuiting it with an electrically insulated tool. Does this indicate that it was indeed the breaker, or could the new breaker be hiding a potentially more dangerous issue? Did it start tripping the breaker intermittently and get worse. Why Does My Microwave Keep Blowing Fuses? I've turned it back on and replugged the microwave but it trips off again. Whether or not the microwave has a dedicated circuit, the microwave may be tripping the breaker because there’s something wrong the the microwave itself that’s causing it to pull too much electrical juice. We recommend taking a look at the socket to see whether it might have melted. Too many items are plugged into the same circuit that the microwave oven is on, causing an overload. Two days ago my microwave oven suddenly started tripping the circuit breaker. If the circuit breaker in that area trips, it’s a sign that something is wrong with the microwave. I can't imagine closing the door would draw a lot ... door it could trip a magnetic breaker before blowing the internal fuse. The house circuit breaker tripped twice. Our old microwave started tripping the breaker every 3rd or 4th time we would use it. By having more than one major appliance on a circuit, you run the risk of overloading the circuit and tripping the breaker. I reset it, the clock & lights worked but if we started the microwave it immediately blew the breaker. The questions are, why, and what can be done to solve the problem? A good place to do this could be your garage because the breakers are usually set for higher amp/current rating. Test to see if the microwave is malfunctioning And if it blows the fuse for your kitchen, there also is a likely cause for that. Blowing a fuse or tripping a circuit breaker is a relatively common issue, especially if you like to vacuum, listen to music and microwave popcorn at the same time. ANy ideas what might be happeing? So I plugged it into another kitchen outlet which is not on the same circuit (don't know the amp though). You should get a value in one of the two positions of each switch (i.e. The microwave oven is defective and drawing an excessive amount of electricity. The high voltage diode is made up of a stack of eight diodes. Something that we’re used to taking 5 minutes in the microwave becomes 30 minutes in the oven. During the 1st year it quit heating and the magnetron had to be replaced (free under warranty). Every time we use our microwave it blows the fuse after about 30 to 45 seconds max. Permalink. I tried it on an other circuit with the same results. You can congratulate yourself on a job well done. Microwave ovens produce powerful electrical discharges that can potentially be fatal. Over 16 years of experience, from licensed electricians. Once the microwave exceeds that number the breaker is tripped and the electrical flow is shut off. If throw it away, the world will have one more trash and I will have to spend some more money to bring back a new one. Sharp microwave blowing circuit breaker (too old to reply) JW <> 2003-08-27 12:45:23 UTC. However, make sure you follow the safety instructions detailed above if you decide to do this. Next, disconnect all the connectors and place the multimeter's two probes (in ohmmeter mode) on the motor's terminals to test for continuity (it should normally give a reading of between 6 and 11 kilo ohms). It will start, and magnetron kicks in, but it browns out and blows the breaker. If all goes well, it will run fine with the new fuse. 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. The magnetron sits inside the microwave's outer casing. I replaced the main fuse and power came back on the microwave and then I opened the microwave door and it tripped the fuses again. 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. We use cookies to give you the best possible experience on our website. Replacing the HV diode is normally not difficult, and they are quite cheap to purchase. I replaced the 20 amp fuse in it (probably the original "repair" as well), two times over a few months. The interference suppressor is needed to protect the appliance from possible electronic malfunctions. Carry out this same test on each of the capacitor's terminals. It will start, and magnetron kicks in, but it browns out and blows the breaker. April 6th, 2017, model - Answered by a verified Appliance Technician. door open or door closed).Make absolutely sure you remember to follow the safety instructions provided at the beginning of this article. And it tripped that circuit breaker too. Make absolutely sure you carefully follow the safety instructions provided at the beginning of this troubleshooting guide. I have moved the oven to another outlet and it doesn't trip other breakers. 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. 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. If any of the timer's electrical contacts are damaged, this could cause the circuit to trip or a fuse to blow. I replaced the main fuse and power came back on the microwave and then I opened the microwave door and it tripped the fuses again. You should either have the microwave fixed, or replace it. If a microwave or electric oven exceeds the amount of electrical current the circuit can handle, the breaker could trip. When I use the microwave feature, the circuit breaker pops. An Overloaded Circuit-A Faulty Appliance- There are double pole and single pole breakers. 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. It seems to happen as soon as I want to "nuc" something by pressing start. If it has an electrical leak, it will trip the circuit breaker. Is there something that could be wrong with this particular microwave? 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). door it could trip a magnetic breaker before blowing the internal fuse. Never test and use a multimeter on the appliance with it still plugged into the mains. One end of it connects to the capacitor and the other to your microwave's ground. This makes the problem WORSE, since the microwave is starting every time it cycles. To do this, place one of the multimeter's probes on one of the capacitor's terminals and the other probe on the appliance's metal frame/casing. I have a six year old Sharp R-510 AK microwave, rated at 1000 watts output, 1500 watts or 13 amps input. To access the door switch, you will have to dismantle the cabinet but only after unplugging the appliance. I do not know how else to describe the issue so I hope... - Kenmore Microwave If it has an electrical leak, it will trip the circuit breaker. Some manufacturers also recommend installing a separate circuit for built-in microwave wall units to avoid repeated tripping. Give us a call at (866) 238-3243, or contact us online. What could be causing the microwave's 20 amp fast-blow fuse to break repeatedly, and trip the breaker? The magnetron sits inside the microwave's outer casing. I tried other outlets and they would also trip. The following steps are what I di… 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. Open up your microwave's outer casing and locate the door latch microswitches. Fridgidaire, Model FGMV175QFA. The microwave keeps tripping off the circuit breaker. It has started to blow the circuit breaker quite often. 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. Check your breaker panel, and if the breaker controlling your microwave is tripped, reset it. If not, then that most likely means your microwave does not have a dedicated circuit. Bought a new microwave, but had the same problem on the FIRST day. Plug the microwave into an area where the breaker is set for a higher amp rating (like a garage), then turn on the microwave and see what happens. If you live in Hillsborough or Pinellas County, give us a call at (866) 238-3243, or contact us online for a free estimate. Also, installing an outlet with a lower amperage rating than the circuit breaker can interrupt the breaker's tripping mechanism when the maximum rated current is exceeded. The microwave is a GE brand, model JVM1631WB004. One of the possible reasons for microwave stopped working and no power could be an issue with the door switch. Otherwise, the breaker can trip prematurely. WARNING We recommend adopting a very cautious and safety-conscious approach if you need to take your microwave apart at any point. It is powered by the electrical current supplied to the appliance and emits electromagnetic waves. Otherwise, the breaker can trip prematurely. Our old microwave started tripping the breaker every 3rd or 4th time we would use it. And it tripped that circuit breaker too. Also, installing an outlet with a lower amperage rating than the circuit breaker can interrupt the breaker's tripping mechanism when the maximum rated current is exceeded. imported post I have a Kenmore built-in (over-the-stove) microwave oven, Model No. If the circuit is drawing too much current, the wires heat up and cause a fire. Plug the unit into an alternate outlet, in an area of your home where the breaker has a higher amperage, such as in a garage or workshop, or into an outlet with a guaranteed dedicated circuit. 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. For example, if your microwave keeps tripping the circuit breaker every time you turn it on, it could be because it’s plugged into the same circuit as one or more large appliances and the circuit simply doesn’t have the extra amperage a microwave needs. I can't imagine I have two defective microwaves. When a microwave trips the breaker, preparing meals suddenly becomes a more difficult and drawn-out process. Now the microwave does not run at all. Due to this stacking, the HV diode cannot be checked with a multimeter. This makes the problem WORSE, since the microwave is starting every time it cycles. If the breaker also trips when using the kettle, perhaps the problem is the breaker or the breaker circuit and not the microwave. 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. Repeat the operation for each terminal. | All Rights Reserved. I have a Panasonic microwave with a built in exhaust fan from around 2011. This means spots like your fridge, laundry machines, large electric furnaces, electric ranges, and microwaves. ... First, let’s talk about the difference between a fuse and a circuit breaker. Circuits break down into two types: dedicated and general purpose. Two days ago my microwave oven suddenly started tripping the circuit breaker. This investment for your peace of mind is only $159/Year, © Copyright 2010-2021 Hoffman Electrical & Air Conditioning. Magnetron - Try to heat 1 cup (250 ml.) The clock, timer, fans, lights, and all other functions work. Now, using either of the ovens trips the circuit breaker after around 5 minutes. Even when unplugged, the capacitor inside the microwave oven can still produce power electrical discharges. There are two terminals which must be … No others in the panel are labeled this way: Thanks! I decided to open the microwave oven to see if I can save it. Personally, I will consider replacing the breaker and see if that helps, since I … Some manufacturers also recommend installing a separate circuit for built-in microwave wall units to avoid repeated tripping. Your microwave may be tripping the power due to an issue with its electricity supply. Blowing a fuse or tripping a circuit breaker is a relatively common issue, especially if you like to vacuum, listen to music and microwave popcorn at the same time. 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 circuit breaker is a 50 amp breaker labeled "Internal Common Trip". Putting in a bigger fuse or breaker only dumps more current into that short circuit, causing a fire hazard. At this point I am clueless. Sharp microwave blowing circuit breaker (too old to reply) JW <> 2003-08-27 12:45:23 UTC. You can also test the circuit itself by plugging something else in … If your microwave oven blows a fuse, there are a couple possible causes. For some reason this seems to be an issue more common on newer models. The circuit breaker is not there to protect your microwave, it is there to protect the wires. Breakers and labeling in breaker box. I other words, it isn't dead, something is just causing a short but I can't tell what. If the microwave trips the house fuse or breaker: Be certain the microwave is on its own dedicated circuit. You should either have the microwave fixed, or replace it. How to Repair a Microwave Oven: My microwave oven stopped working. Replace the magnetron if your tests prove it to be defective. Carrying out repairs on a microwave oven requires a very careful and safety conscious approach. Since then these technological marvels have come a long way, with more features, compact sizing, and greater cooking power than ever before. Interference suppressors can sometimes blow, causing them to short-circuit and trip the power or blow the fuses. It is powered by the electrical current supplied to the appliance and emits electromagnetic waves. If the breaker trips off again, unplug the microwave and contact service. Regardless of whether your microwave oven is on a dedicated circuit, it’s a good idea to move on to the next step, to ensure the appliance is operating correctly. 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). 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. 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. The information on this website is for informational purposes only; it is deemed accurate but not guaranteed. You can also check whether the capacitor has an electrical leak or not. I opened it up, and the HV transformer was literally fried. Proudly Serving Hillsborough, Pinellas, Pasco, Sarasota, & Manatee Counties. The turntable motor enables your microwave to cook food uniformly. So I plugged it into another kitchen outlet which is not on the same circuit (don't know the amp though). I thought that it was the outlet at first so I tried another outlet on a different breaker, same result. It's rated at 15 amps and it's plugged into a 20 amp dedicated circuit. We also recommend wearing a pair of electrically insulated gloves to ensure you are able to work in complete safety. In new houses, refrigerator and freezer often have a dedicated outlet. If all goes well, it will run fine with the new fuse. To take the measurement, disconnect the magnetron's connectors and place the multimeter's probes on its terminals. 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. The reasons are-6 Reasons Microwave Trips Breaker When Door Opens. You can see it circled here in this unfortunately grainy picture. Microwave Fuse Ceramic Fuse Cartridge Fuse 20 Amp 250V Slow-Blow Compatible and Universal Replace for GE WB27X10388 and Whirlpool Kenmore Other Microwave 5 PCS Divine Lighting 5 Qty. The highly trained, certified electricians at Hoffman Electrical & A/C have been solving issues with kitchen wiring and overloaded circuitry since 1989. 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. One end of the transformer connects directly to the appliance's ground. You can get the microwave checked for earth leakage, which is a good idea if it is fairly old anyway. In the past it only happened when I used the microwave oven and the toaster oven at the same time. the door on the microwave trips the breaker! A microwave oven needs its own 20 amp circuit, in order to prevent an overload. about 2 years old. 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. I have a Whirpool GH5184XP microwave / oven hood combo, that blows the circuit breaker only when the cooking function is started. 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. The high voltage transformer amplifies the electric current so that the magnetron can operate. Single are usually for 110V and double are for 220V. If possible. Do I need a 20 Amp breaker for the microwave? We will focus on some of the reasons. Microwave Keeps Blowing My Fuse or Tripping My Circuit. Dedicated circuits are singled out for specific parts of the home that require a lot of electricity.
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