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Home /  Appliance Maintenance / Microwave Not Heating: Reasons|Tips|Solutions
last_updated_date Last updated: October 27th, 2022

Microwave Not Heating? 101 Repair Guide

PUBLISHED: Oct , 27 2022 • 6 MINS READ

Microwave is one of the most widely utilized electrical gadgets nowadays since it serves a variety of functions and is simple to operate. No matter the location, the majority of individuals own microwaves for ease of cooking. However, it can be a significant hassle if your microwave isn’t working correctly. There are a few potential remedies you may try if your microwave not heating. We’ll talk about some major microwave problems in this post, along with easy fixes. Let’s get going.

Microwave Not Heating?

Major Problems Leading To Microwave Not Heating

The most frequent reasons why microwaves don’t heat are listed below. 80 to 90% of the time, one of these problems will be the cause of a microwave that doesn’t heat.

Major Problems Leading To Microwave Not Heating

It has a burned-out diode. Your microwave’s diode and capacitor team up to provide the voltage needed to operate the magnetron, which cooks the food. As a result, even if the microwave is on, it won’t have enough power to heat your meal if the diode burns out.

It has a burned-out magnetron. A key component of the microwave heating operation is the magnetron. Unfortunately, if that burns out, a costly repair may be necessary.

It has a broken door switch.A typical microwave has three to four door switches. When a microwave is operating properly, it won’t start heating until these door switches have been activated in a specific order. The microwave will not heat if any of these switches are not operating.

Things To Do When Your Microwave Is Not Heating

Things To Do When Your Microwave Is Not Heating

Now that you know the factors causing problems with your microwave; let’s take a look at the quick fixes! However, please note that even after being disconnected, microwave ovens can still contain lethal levels of energy in the high-voltage capacitor. So make sure you use appropriate protection.

Whenever you find your microwave not heating the meal, check for:

Power Supply

Make sure the power source for the microwave is hooked to a grounded, working outlet. Whether the outlet seems to be working properly, check the fuse or circuit breaker, if they have tripped in your house.

Microwave’s Door

The microwave won’t start heating up until the door is fully closed. Before starting, ensure the microwave door is well closed. Be careful to take out the shipping spacer and any remaining packing from a brand-new microwave to avoid the latch from not closing all the way.

Display Codes

If there is a problem with your appliance or if it is in a certain mode, it won’t heat up and a code will show up on the display. Common codes that prohibit the microwave from heating up include control lock and demo mode. It is recommended to turn off both of them to make the equipment work again. Consult the use and care guide for your model to determine what each code means and how to fix it.

Microwave’s Controls

Make sure the settings on your microwave are set to the right temperature for what you are attempting to heat. Your food may be coming out cold if the present settings or timer are not running at a power level or cook duration sufficient to heat your meal. In this case, you will need to modify the power level.

If none of these work, it’s time to call a professional.

How A Home Warranty Can Help

To save time and money, you can consider investing in a home warranty plan for your appliances. It is a service contract that covers the repair and replacement costs of your major home appliances. This way if something goes wrong, you can easily contact the company and a professional will be at your doorstep to perform hassle-free services.

How A Home Warranty Can Help

We have listed the top four companies in the U.S. market that cover microwaves in their plans. Take a look:

American Home Shield

Premium – $39-$60

Deductible – $75-$125

Microwave Coverage

All parts and components

discountDiscounts – $150 Off + Free Roof Coverage + 2 Months Free

Select Home Warranty

Premium – $44-$60

Deductible – $60-$65

Microwave Coverage

All parts and components except portable,combo or countertop microwaves.

Select Home Warranty

Rating star Rating star Rating star Rating star Rating star
discountDiscounts – 1st Month Free + Free Roof Coverage

Choice Home Warranty

Premium – $46-$55

Deductible – $60-$85

Microwave Coverage

All parts and components

Choice Home Warranty

Rating star Rating star Rating star Rating star Rating star
discountDiscounts – $200 Off + 2 Months Free

Serviceplus Home Warranty

Premium – $50-$60

Deductible – $75

Microwave Coverage

All mechanical components and parts, except doors, hinges, handles, glass, knobs, lights & clocks

ServicePlus Home Warranty

Rating star Rating star Rating star Rating star Rating star

Final words

Now, that you have understood that it’s easy to fix problems that lead to microwaves not heating, you can make your life easy. However, to make it easier, consider a home warranty plan! Additionally, routine maintenance will further help you to increase the life of your appliance and cause fewer problems.

Frequently Asked Questions (FAQs)

Q.

Why Is My Microwave Working But Not Heating?

A.

If your microwave turns on but is not heating the food, there can be various reasons behind this. Check out the sections above, where we have detailed the problems keeping your microwave away from heating.

Q.

My Microwave Is Producing Excessive Noise And Not Heating The Food. Why?

A.

A malfunctioning or worn-out diode is often the cause of a loud buzzing sound coming from your microwave. The diode is in charge of converting AC to DC to deliver power to the magnetron. Moreover, your microwave won’t produce heat if a bad diode is the cause of the noise it makes.

Q.

How To Troubleshoot A Microwave That Is Not Heating?

A.

The procedure of troubleshooting a microwave depends on the type and model of the appliance. So, we recommend reading the user guide of your microwave for the appropriate process.

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