Question about Kenmore 63792 Microwave Oven

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KENMORE ELITE MODEL# 721.6368330

I KEEP GETTING F9 ERROR CODE EVERY TIME I TRY TO HEAT SOMETHING UP
PLEASE HELP

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  • Leathers Nov 09, 2008

    getting F 9 every time I try to use

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3 Answers

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I have the same model. At first, I found a bad magnetron (short from filament to chassis ground). Figuring the inverter board was old and no way for me to test it, I replaced both the magnetron and the inverter board at the same time.

I STILL got the F-9 after the inverter tried several times to fire the magnetron. It alway quit after 30 seconds with the F-9.

I had already checked the continuity and function of the three door switches, but I checked them again. All good. All other checks I could do with an ohm meter, such as humidity sensor, thermostat, relay, and all motors: all GOOD.

So the only thing left to do was replace the control board. I bought a brand new one and installed it, and the thing still spews it's F-9 after 30 seconds! Excuse my anger, but ARGGGGHHHH!! I spent several hundred bucks replacing every major component. I took photos, so I know I got every wire harness back in the exact right place, with every plug hooked up just like new.

What the *** could still be wrong?

Posted on Nov 27, 2012

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  • Master
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F9 is an error that indicates an inverter board or magnetron has failed. With the F9 error cleared, start the oven and listen for a ticking sound. The inverter will attempt to 'fire' the magnetron 5 times.(ticking sound). If can hear ticking, replace magnetron.

Posted on Jun 02, 2008

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  • Kenmore Master
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In every brand I can find, F9 means there is an issue with a door switch or 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: http://tinyurl.com/yzjozk

You can probably find an exploded view by entering your FULL model number 721.6368330 here: http://www.searspartsdirect.com

We're happy to help and we appreciate your thoughtful rating of our answer.


William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Apr 21, 2008

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MicrowaveSvc
  • 8865 Answers

SOURCE: f9 code on mod 721-80869400 kenmore elite

This is usually inverter trouble, but it may be the magnetron, controller, wiring, etc.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

To find helpful exploded view diagrams and get part numbers, you can just enter your full model number at the Sears parts site.

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

Posted on May 20, 2009

  • 1 Answer

SOURCE: I have an error code

I would like to repair the kenmore mocrowave myself, it has the error code f-9. Do I need to let the micrwave sit for a wile so the hi voltage can disipate from the inverter or magetron

Posted on Aug 07, 2009

  • 1 Answer

SOURCE: kenmore model 721 f9 error???

Called Sears.

Posted on Sep 14, 2009

  • 1 Answer

SOURCE: My Kenmore Elite Microwave Model No. 721.64683300

My Kenmore Elite Microwave Model No. 721.64683300 does not seem to be heating well and will shut off and flash an F9 code. What does the F9 code mean

Posted on Jan 19, 2010

  • 33 Answers

SOURCE: Kenmore microwave oven model # 721 63684300 built

I checked the owners manual and it does not list the fault codes. Manufactures leave this information out of the manual most of the time so you have to call them for service.

Call 1-800-4-my-home (sears) and tell them the problem. You will also need to provide the m# so have that ready when you call.

Good Luck

Posted on Dec 20, 2010

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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F9 is indeed a door switch error.

 

I would suspect that if the switches are good, a couple of wires may be reversed on them, or maybe one of the door switch mounts is broken.

 

There may be a wiring diagram in the oven, either pasted to the cover, or folded and stored behind the control panel.

 

If you can supply the actual model number (not 636xx, etc.) I can try to find a wiring diagram.

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The F-9 error code indicates a defective control board, inverter or line voltage too high.
Read more: http://wiki.answers.com/Q/What_does_the_code_F-9_mean_on_a_Kenmore_Elite_Microwave_oven#ixzz1FMSrTmbU


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Sorry to read about your problem, I hope this helps you out.

The F9 error code indicates an inverter failure. If you continue to receive the F9 error code after unplugging the unit for 5 minutes, the control system assembly may need to be replaced.

Note : Microwaves are not good do-it-yourself projects. Microwaves are inherently dangerous to service. Internal capacitors can retain a lethal electrical charge even when the microwave is unplugged. A microwave radiation leakage test must be performed on the unit following any repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question. take the time to rate us.Thanks and good luck

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My Kenmore Elite Microwave Model No. 721.64683300 does not seem to be heating well and will shut off and flash an F9 code. What does the F9 code mean


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HI. in most cases, this will lead to a failed Heating device(magnetron tube).It would be wise to check the Magnetron cutoff fuse to be sure of its integrity. if the fuse is blown, simply replace it. if the fuse continues to show continuity, replace the magnetron.

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This is usually inverter trouble, but it may be the magnetron, controller, wiring, etc.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

To find helpful exploded view diagrams and get part numbers, you can just enter your full model number at the Sears parts site.

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

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You can find exploded views and order parts by entering your model number at the Sears parts site.

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

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F9 is normally a bad door switch or 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 probably find exploded views and order parts by entering your model number here at the Sears parts site.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

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