Frigidaire Microwave Not Heating

Frigidaire Microwave Not Heating. If your Frigidaire microwave isn’t heating up and has lost power, it’s most likely due to one of several urgent problems that the machine is experiencing.

The more you know about what could possibly be the cause of your problem, the better equipped you’ll be to take care of it before it becomes a bigger issue to deal with.

Below are a few possible issues along with some possible solutions you might want to try in order to get your machine back up and running again as quickly as possible because we all know what we use our microwaves for almost on a daily basis.

Frigidaire Microwave Not Heatingwhy frigidaire microwave not heating

In this article, we will discuss how to resolve problems with a frigidaire microwave when it isn’t heating.

Issue With Blown Fuse

The first step to figuring out why your microwave is not heating or appears to not have power is testing the fuse. Sometimes during electrical short-circuiting in the microwave, it may cause the fuse to blow out.

In your home, it’s like blowing a fuse when too many appliances are connected to the same circuit. If that happens and you don’t figure out how to fix it, then your entire appliance won’t work which includes heating.

The first thing you want to do is make sure you’re using a multimeter for continuity. If no continuity occurs when you test the fuse with a multimeter, you should buy a new one and replace it for this machine to work once more.

Door Switch Malfunction

If the door of your microwave is faulty, it won’t turn on and heat. The switch is what makes it go when you close the door.

But if that bad switch doesn’t do anything when you close the door, then the microwave will still be cold and not work.

To test if there’s something wrong with the switch, check to see if it works with a multimeter. If it’s not working then make sure to replace it because otherwise, you can’t use your microwave.

Faulty Door Slams

Well, if this is the case then there may be a reason why your device’s power and heat options are not working. For instance, slamming the door can blow out a fuse that enables the heated seat switches within your system.

For example, you’ll have to check whether or not this issue is due to faulty components like outdated fuses / fusible links by testing them out with a multimeter as mentioned above under Strategies.

Defective Magnetron

The magnetron is the component that generates high-frequency, microwaves for use in cooking food. If it’s faulty or no longer working correctly, then it won’t be able to effectively heat up your delicious meals.

The magnetron cannot be repaired so if you’ve identified the issue with your own device, it is essential that you find a reputable specialist who can repair this functionality on your microwave so that you can get back to enjoying popcorn and other snacks in the future.

Transformers With High Voltage

The magnetron antenna in microwave ovens generates a very high voltage in order to transmit the energy required to cook food. If it is built correctly, this process won’t be explosive, although high voltages are known to cause arcing and sparks.

The reason for this is because microwave ovens usually use two high-voltage capacitors instead of wiring and the configuration results in a small release of energy when power first flows through the microwave.

This energy is safely contained in the capacitor’s dielectric until it discharges approximately one-tenth of a second later.

Capacitor With High Voltage

The microwave’s high voltage capacitor helps to convert the high voltage AC coming from your home outlet into high voltage DC. It’s there to help ensure that what goes into your microwave is more powerful than what comes out of it.

So, if you can detect and measure the current going in but not out, then chances are your high voltage capacitor is defective and needs to be replaced.

Luckily, it’s a common and relatively inexpensive part so you can easily find one online without having to buy another entire HV transformer and HV diode or power supply.

Thermo Protector Failure

The thermoprotector cuts off power to the microwave if it overheats. The first thing you’ll want to do if the thermoprotector is tripping is figured out which part is damaged by testing its continuity with a multimeter.

When the thermoprotector does not have continuity, either it has failed or it needs to be replaced.

Defective Main Control Board

The main control board is often misdiagnosed as the issue while in actuality it rarely is. More likely, there could be other components that prevented the proper function of the board such as a sensor or power supply.

While testing all other components initially rule out the control board and possible bad connections, if you’re still coming up with issues and your device isn’t turning on it’s possible to replace just the control board.

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