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Verna Stovall Posted on Jul 22, 2018

My Frigidaire Galaxy microwave came on by itself - very hot and fan running. I could not shut it off It was. Purchased in January, 2017.

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Larry Orr

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  • Posted on Nov 08, 2023
Larry Orr
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My 2021 Frigidaire also turned on by itself 2 days ago. It also got hot and would not turn off except at the breaker. After 10 minutes I turned breaker on and the microwave was still on. Turned breaker on the next morning and all good. We are afraid to leave house unless we turn breaker off. Any suggestions? Do I need a new microwave?

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Dennis Boxerman

  • 1306 Answers
  • Posted on Feb 07, 2009

SOURCE: fan in microwave won't shut off

in most cases, it is the door switch. It usually has 2 micro switches and either one can go bad. Not a hard fix. I would look at the operation to see if the switches are working. If that is not it, could be in the circuit board. Could be too much to fix, maybe buy a new one if it is a counter top type. Otherwise let it run till it quits. Call a repair guy, and have him diagnose the problem. Tell him you will fix it in a month or two so could he write down what you need with the part numbers. This way you do not have to start at ground zero. Then order the parts and fix yourself if you feel brave enough.

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Anonymous

  • 6784 Answers
  • Posted on Jun 01, 2009

SOURCE: The microwave starts by itself and runs.

HI.although this is quite unusual, it can happen at times when the touch control becomes faulty. simply replacing the Touch control will fix this issue.

Touch control will run about $56.00

Anonymous

  • 220 Answers
  • Posted on Sep 01, 2009

SOURCE: I THOUGHT I WAS TURNING

If it didn't come back on in 15-20 minutes you blew the cavity thermal fuse you'll have to have a technician replace it.

Anonymous

  • 1 Answer
  • Posted on Oct 22, 2009

SOURCE: Microwave seems to run, but won't heat.

We have a similar problem! It sounds like a problem with the microswitch inside the unit that the door is suppose to engage when closed. If not engaged properly, it will not cook. We had the switch replaced last March but it has started acting up again. We can press in on the door and/or lift it slightly and it will cook. Try putting time on the counter and hit start. It the word "cook" appears then try moving the door slightly and see if the turntable starts turning. If not, then you may have a more serious problem. Good luck!

Anonymous

  • 949 Answers
  • Posted on May 13, 2010

SOURCE: Frigidaire FMCB115GC Microwave Oven wont stop

The only parts that are available for this unit by model number are the tray inside and the feet on the outside.

If you were adventurous and found a way to take it apart and remove the door switches you might be able to match them up at an appliance parts dealer but short of that it sounds like a lost cause.

I know that is not what you want to hear, and I as well do not like being the bearer of bad news.....

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  1. Interlock switchIf your microwave is turning itself on, the first thing to check is the interlock switch. This is usually the first thing to malfunction that could cause this issue. If the interlock switch is bad then it will need to be replaced.
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