Why Is My Microwave Tripping the Breaker? Causes & Solutions
A faulty microwave can be dangerous, so knowing how to identify problems is key
Highlights
Microwaves can trip breakers due to various internal and external factors.
Look out for unusual sounds, burning odors, or visible flashes.
User-related issues can also lead to breaker trips.
The microwave oven has revolutionized the way we prepare and reheat food, making our lives more convenient. If your microwave keeps tripping, it can be both perplexing and frustrating. We’ll examine some of the common reasons why your microwave may be tripping and provide tips to help you fix the issues.
1. The Magnetron
The powerhouse of your microwave, the magnetron generates the microwaves that cook or heat your food. If your microwave’s magnetron malfunctions, you might hear an unusual buzzing sound or smell an electrical smell while your microwave is in use.
Severity and consequences: A malfunctioning magnetron can lead to uneven heating, longer cooking times, or even a complete breakdown of your microwave. If left unresolved, it could eventually render your microwave unusable.
Solution: If you suspect an issue with your microwave’s magnetron, you should contact a professional microwave technician near you for diagnosis and repair. Attempting to fix or replace the magnetron yourself is dangerous due to its high-voltage components.
2. High Voltage Capacitor
The high-voltage capacitor stores the energy that powers the microwave’s magnetron. If faulty, it might create a loud humming noise or make a popping noise accompanied by a visible flash while the microwave is running.
Severity and consequences: A malfunctioning high-voltage capacitor can potentially lead to electrical hazards or the microwave not working at all. Ignoring the issue could also result in potential safety risks and further damage to the microwave.
Solution: Due to the high voltage associated with capacitors, it's recommended that you seek the help of a pro. An experienced technician can safely diagnose the problem and replace the capacitor if needed.
3. Diode Issues
A microwave diode ensures the electrical current in your microwave flows in the right direction. If a diode malfunctions, your microwave can make a loud buzzing noise or produce a burning odor.
Severity and consequences: Ignoring diode issues can reduce cooking efficiency and potentially damage other microwave components. It could also result in the microwave not turning on at all.
Solution: If you suspect a diode problem, you should consult a professional technician. Attempting to replace a diode without the proper training could lead to further complications.
4. Door Switch Problems
Microwave door switches are designed to prevent your microwave from operating when the door is open. A faulty door switch might cause your microwave to continue running even when the door is closed, or you could hear a clicking sound.
Severity and consequences: A malfunctioning door switch poses a safety risk, as it can expose you to harmful microwaves. Additionally, continued use of a microwave with a faulty door switch could lead to more extensive damage to the microwave.
Solution: If you suspect a door switch issue, stop using your microwave immediately and have it examined by a professional technician. They can replace the faulty switch or provide guidance on whether or not you need to install a new microwave.
5. Power Settings and Circuit Overload
Using the microwave at its highest power settings for extended periods of time can overload your circuit, causing your breaker to trip. Running other high-power appliances simultaneously on the same circuit can also cause your breaker to trip.
Severity and consequences: Circuit overload can be resolved by redistributing appliances across different circuit breakers. Ignoring this issue can lead to inconvenience, due to frequent breaker trips, and potential damage to the microwave.
Solution: When using your microwave, adjust your power settings and avoid concurrent use of other high-power appliances on the same circuit breaker. Distribute the load across different circuits to prevent overloading.
6. Aging Wires and Outlets
Over time, the wires and outlets that power your microwave can deteriorate due to wear and tear. This degradation can increase electrical resistance, causing your microwave to draw more current and potentially trip the breaker.
Signs and sounds: When the microwave is in use, you might notice flickering lights or hear a buzzing sound, indicating an issue with the electrical connection.
Severity and consequences: Ignoring aging wires and outlets can lead to more significant electrical problems in your kitchen, including potential fire hazards and more frequent breaker trips.
Solution: If you suspect that aging wires or outlets are the reason for your tripping breaker, consult a professional electrician near you. They can assess your electrical system, make the necessary microwave repairs or upgrades, and ensure the safety of your appliances and your home. Addressing this issue promptly can help prevent future electrical hazards.
Repairing vs. Replacing the Microwave
If your microwave keeps tripping the breaker, the first instinct is to repair it, but it may be time for a replacement. On average, microwaves last about seven years, but they can last as long as 11. If your unit is pushing a decade and has seen better days, consider buying a replacement. However, the decision to repair or replace may heavily rely upon your available budget.
The cost to buy a new microwave depends on the type of unit you plan to buy. A regular countertop microwave costs between $50 and $500 while combo microwave ovens can cost as much as $3,500. If replacing your microwave isn’t a financial option and troubleshooting hasn’t been successful, it’s time to call in the professionals.
Who Fixes a Microwave?
If you can’t get your microwave to stop tripping the breaker, hire a local appliance repair professional. They have the skills to quickly identify the problem and fix it. These professionals also have the knowledge and experience of working with appliances and taking extra precautions to reduce electrical hazards.
On average, the cost of appliance repairs ranges between $107 and $149, well below the hundreds—or potentially thousands—you’d pay for a microwave replacement. For microwaves specifically, you’re looking at an average repair cost between $50 and $400. And if you still can’t decide on a repair or replacement, an appliance professional can help you figure out which one is right for you.