Question about Kenmore 64663 Microwave Oven

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F-9 code in display

My Microwave gives me a F-9 code and stops working !?

 

 

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  • karilynn Feb 04, 2008

    Microwave displays F9 code and shuts off? Do I need a repair?

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  • Kenmore Master
  • 9,098 Answers

F9 usually indicates a problem with the door switches or a broken door switch mount.

 

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

 

You can find helpful exploded view diagrams and order parts by entering your FULL model number here: http://tinyurl.com/gv383

Posted on Oct 12, 2007

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Posted on Jan 02, 2017

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Model 72180883400 Microwave Oven F-9 Failure Code


If the unit is less then 5 years old i believe it is still covered it may be the inverter board or a grounded Magnetron tube. If you need any further assistance let me know. I would contact kenmore directly.
Thanks,
Lee

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F-9 pops up - microwave stops after 5 seconds. This is a Kenmore Elite Microwave, made in 2003. Model 721 63683300


Hello :

The F-9 error code indicates a defective control board, inverter or line voltage too high .

WARNING : A microwave is capable to give you a serious electrical shock even when it's unplugged , so I recommend you to call a repair technician for help .

good luck .

please don't forget to rate !

Apr 04, 2010 | Kenmore Microwave Ovens

1 Answer

Model 72180883400


Hi,
F-9 error code indicates a defective control board, inverter or line voltage too high. f the microwave runs for about 7 seconds with a ticking sound..then stops and shows "F-9", it is the magnetron that has failed. The fact that the unit starts and runs with the TICKING SOUND means the control board is sending signal to inverter board and the inverter board is sending signal to magnetron. Magnetron is covered by full 5 year warranty, inverter board is only 3 years.

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Microwave won't run


F9 code means either a bad door switch or a loose door switch mount.

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

(If not, please reply back with your brand and model number so we can help you.)

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

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Behind the right front corner faceplate is a bag with the tech support info.
I used this and went through all the troubleshooting and got to the power inverter board. This board has the 2 red wires out of it that go to the magnetron. Instead of replacing the whole inverter module , I examined all the components on it. I found that there are 2 high voltage rectifier diodes attached to the transformer and 1 of them was not testing good. The diodes are UXC2B diodes.. Just clipped out the bad one and soldered in a new one.
Hope this helps..

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2 Answers

F-9


Need to know the entire model # on the microwave.

Oct 05, 2007 | Microwave Ovens

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