20 Most Recent Frigidaire FMV145K Microwave Oven Questions & Answers

Assuming there's no moisture, grease, or other foreign matter on the control circuit board (especially in the area where the keypad connects) then "F3" means you have a shorting membrane keypad.

This part is no longer available from the manufacturer, but in case you can find one in "new old stock" from a local or online distributor, the part number was 5304430278.

If you find the part, feel free to contact me here or at microwavecontrol.com for detailed replacement instructions.

Good luck.

Frigidaire... | Answered on Oct 24, 2018


Frigidaire... | Answered on Apr 19, 2018


Frigidaire... | Answered on Feb 23, 2018

Likely when you cleaned it, grease mixed with the cleaner you used got between the button panel and the actual button switch behind the panel, making it stick on. Will need the model to determine how to remove the panel to clean underneath...OR, it may dry out and start working normally again.

Frigidaire... | Answered on Nov 03, 2017

check the door latches inside the oven, open the housing and spray some lubricants on the latches.

Frigidaire... | Answered on May 09, 2015

Try to press "Reset" a few times. Sometimes they forget to clear after timing out.
Hope this helps.

Frigidaire... | Answered on Feb 28, 2015

Hey friend, thank you for your inquiry!

I understand that you would like to set your Frigidaire microwave for 90 seconds. Based off the Use and Care Guide you would press "Cook Time" and then enter "90". That would start your microwave for 90 seconds. If that is not your question please provide me with additional information for your current issue. I hope this information is helpful. -Matt

Frigidaire... | Answered on Oct 09, 2014

Hi Elise,

You have to find its user guide.


Frigidaire... | Answered on Jan 16, 2014

Thats just judgemental, depeding on sentimnets you have for it...ask yourself a question: why would you buy a new MW if the one you have does the same as the new one you would probably buy?

Frigidaire... | Answered on Nov 28, 2013

This sounds like either a bad door switch or possibly a latch head problem from taking the door apart......

Frigidaire... | Answered on Nov 20, 2013

If after a reset, at the household circuit breaker box, does not prove to be successful, sounds like you will need a new control board and a full diagnosis to make sure the board did not short anything else out internally. This is not a typical DIY job, so I would recommend a technician complete this for you.

Frigidaire... | Answered on Dec 27, 2012

Hello - Are you having an issue with an over the range microwave? What exactly is the problem you are experiencing? With this information I can assist you further with the issue the unit is having.

Frigidaire... | Answered on Nov 01, 2012

Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips


Frigidaire... | Answered on Aug 26, 2011

It may be a blown thermal cutout / thermostat on either the magnetron or oven cavity.

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

At our Web site, we have a video available showing how to remove a typical over the range grille and control panel assembly in under 5 minutes. Then you can access most of it for testing and part replacement.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Frigidaire... | Answered on May 26, 2011

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