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Microwave Nightmare: Why Doesn’t My Frigidaire Microwave Heat Up?

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

  • If the cover is dirty or clogged, the microwaves will not be able to reach the food.
  • If you have followed all of the troubleshooting steps above and your Frigidaire microwave is still not heating, it is time to call a repair technician.
  • However, if you are not comfortable performing these troubleshooting steps, or if the problem persists, it is best to contact a qualified technician for assistance.

If your Frigidaire microwave is not heating, it can be a frustrating experience. This appliance is a kitchen staple, and when it’s not working correctly, it can disrupt your cooking routine. But before you call for a repair technician, there are a few things you can check yourself to troubleshoot the issue.

Common Causes of a Frigidaire Microwave Not Heating

  • Faulty Door Switch: The door switch is responsible for ensuring that the microwave oven only operates when the door is closed. If the switch is faulty, the microwave will not receive power and will not heat.
  • Damaged Magnetron: The magnetron is the component that generates the microwaves that heat your food. If the magnetron is damaged, the microwave will not be able to heat food.
  • Faulty Capacitor: The capacitor stores electrical energy and releases it to the magnetron. If the capacitor is faulty, the magnetron will not receive enough power to generate microwaves.
  • Blown Fuse: The fuse protects the microwave from electrical surges. If the fuse is blown, the microwave will not receive power and will not heat.
  • Loose or Damaged Wiring: Loose or damaged wiring can prevent the microwave from receiving power or can cause the magnetron to malfunction.
  • Dirty or Clogged Waveguide Cover: The waveguide cover is the metal cover that directs the microwaves into the oven cavity. If the cover is dirty or clogged, the microwaves will not be able to reach the food.
  • Faulty Control Panel: The control panel is responsible for controlling the microwave’s functions. If the control panel is faulty, the microwave may not be able to heat food properly.

Troubleshooting Steps

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1. Check the Door Switch

  • Open and close the microwave door several times.
  • Listen for a clicking sound when the door is closed.
  • If you don’t hear a clicking sound, the door switch may be faulty and need to be replaced.

2. Inspect the Magnetron

  • Disconnect the microwave from the power outlet.
  • Remove the outer casing of the microwave.
  • Locate the magnetron, which is usually a large, cylindrical component.
  • Check for any signs of damage, such as cracks or burns.
  • If the magnetron is damaged, it will need to be replaced.

3. Test the Capacitor

  • Disconnect the microwave from the power outlet.
  • Discharge the capacitor by touching the terminals with an insulated screwdriver.
  • Use a multimeter to measure the capacitance of the capacitor.
  • If the capacitance is not within the specified range, the capacitor will need to be replaced.

4. Check the Fuse

  • Disconnect the microwave from the power outlet.
  • Locate the fuse, which is usually located near the power cord connection.
  • Remove the fuse and inspect it for any signs of damage, such as a blown filament.
  • If the fuse is blown, replace it with a new fuse of the same amperage.

5. Inspect the Wiring

  • Disconnect the microwave from the power outlet.
  • Remove the outer casing of the microwave.
  • Check for any loose or damaged wires.
  • Tighten any loose connections and replace any damaged wires.

6. Clean the Waveguide Cover

  • Disconnect the microwave from the power outlet.
  • Remove the waveguide cover, which is usually located at the top of the oven cavity.
  • Clean the cover with a damp cloth and remove any food particles or debris.
  • Reinstall the waveguide cover.

7. Reset the Control Panel

  • Disconnect the microwave from the power outlet.
  • Wait for a few minutes.
  • Plug the microwave back into the power outlet.
  • Press the “Cancel” or “Stop” button to reset the control panel.

When to Call a Repair Technician

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If you have followed all of the troubleshooting steps above and your Frigidaire microwave is still not heating, it is time to call a repair technician. A qualified technician will be able to diagnose the problem and repair your microwave quickly and efficiently.

The Bottom Line: Troubleshooting Your Frigidaire Microwave

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If your Frigidaire microwave is not heating, there are a few things you can check yourself to troubleshoot the issue. By following the steps outlined in this guide, you may be able to solve the problem without having to call a repair technician. However, if you are not comfortable performing these troubleshooting steps, or if the problem persists, it is best to contact a qualified technician for assistance.

Frequently Asked Questions

Q: Why is my Frigidaire microwave sparking?
A: Sparking in a microwave oven can be caused by several factors, such as metal utensils, foil, or food debris touching the metal walls of the oven. It can also be caused by a faulty magnetron or waveguide cover.

Q: Why does my Frigidaire microwave make a humming noise?
A: A humming noise in a microwave oven can be caused by a faulty capacitor or magnetron. It can also be caused by loose or damaged wiring.

Q: Why does my Frigidaire microwave turn off after a few seconds?
A: A microwave oven that turns off after a few seconds may have a faulty door switch, control panel, or thermal fuse. It can also be caused by a problem with the power supply.

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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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