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Guide

Unleash The Power Of Heating: How To Fix A Whirlpool Microwave That Doesn’t Ignite

Emily Graham is the editor in chief and head chef of Cookmag Online. With over 15 years of experience in the culinary industry, she's tested hundreds of kitchen appliances both professionally in restaurant kitchens and at home cooking for her family. Emily loves sharing her knowledge and reviews of the...

What To Know

  • The magnetron is the heart of the microwave and generates the microwaves that heat the food.
  • To test the diode, use a multimeter to measure the resistance between the diode terminals in both directions.
  • If the resistance is very low in one direction and very high in the other, the diode is working properly.

A malfunctioning microwave can be a major inconvenience, especially when you rely on it for quick and easy meals. If your Whirlpool microwave has stopped heating, don’t despair. With a little troubleshooting and some basic tools, you can often fix the problem yourself. Here’s a comprehensive guide on how to fix a Whirlpool microwave that doesn’t heat.

Safety Precautions

Before you begin any repairs, unplug the microwave and allow it to cool completely. Microwaves contain high-voltage components that can be dangerous if handled improperly.

Troubleshooting

1. Check the Power Source

Ensure that the microwave is plugged into a working outlet and that the circuit breaker or fuse is not tripped.

2. Inspect the Door

The microwave door must close securely to create a seal that prevents microwaves from escaping. Check for any damage or obstructions that may prevent the door from closing properly.

3. Examine the Magnetron

The magnetron is the heart of the microwave and generates the microwaves that heat the food. If the magnetron fails, the microwave will not heat. To check the magnetron, use a multimeter to measure the resistance between the magnetron terminals. If the resistance is infinite, the magnetron needs to be replaced.

4. Test the Capacitor

The capacitor stores energy and releases it to the magnetron. A faulty capacitor can prevent the microwave from heating. To test the capacitor, use a multimeter to measure the capacitance between the capacitor terminals. If the capacitance is significantly lower than the specified value, the capacitor needs to be replaced.

5. Inspect the Diode

The diode allows current to flow in only one direction. A faulty diode can prevent the microwave from heating. To test the diode, use a multimeter to measure the resistance between the diode terminals in both directions. If the resistance is very low in one direction and very high in the other, the diode is working properly. Otherwise, it needs to be replaced.

6. Check the Wiring

Loose or damaged wiring can prevent the microwave from heating. Inspect all wiring connections for any signs of damage or corrosion. Tighten any loose connections and replace any damaged wires.

7. Reset the Microwave

Sometimes, a simple reset can resolve the issue. Unplug the microwave for a few minutes and then plug it back in. This may reset the microwave’s control board and restore its functionality.

In a nutshell

If you have followed all the troubleshooting steps and your Whirlpool microwave still does not heat, it may be necessary to contact a qualified appliance repair technician. Replacing major components, such as the magnetron or capacitor, requires specialized knowledge and tools.

Answers to Your Most Common Questions

Q: Why is my Whirlpool microwave not heating, but the light is on?
A: This could indicate a problem with the magnetron or capacitor.

Q: Can I fix a Whirlpool microwave that doesn’t heat myself?
A: Yes, you can attempt to troubleshoot and repair the microwave yourself if you have some basic technical skills and tools. However, if you are not comfortable working with electrical components, it’s best to call a technician.

Q: How much does it cost to fix a Whirlpool microwave that doesn’t heat?
A: The cost of repairs will vary depending on the specific problem and the parts that need to be replaced. However, expect to pay between $100 and $300 for parts and labor.

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Emily Graham

Emily Graham is the editor in chief and head chef of Cookmag Online. With over 15 years of experience in the culinary industry, she's tested hundreds of kitchen appliances both professionally in restaurant kitchens and at home cooking for her family. Emily loves sharing her knowledge and reviews of the latest and greatest cooking gadgets and small appliances hitting the market. In her spare time, she enjoys cooking up new recipe creations in her fully equipped dream kitchen. Emily holds a degree from The Culinary Institute of America and writes with the goal of helping home cooks at all levels find the right tools to improve their cooking. Follow along on Instagram @chefemilygraham for more of her kitchen adventures and product recommendations.
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