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Kenmore elite ultrawave microhood combination error code F9

I have a kenmore elite ultrawave microhood combination number 721.64689 that gives us an error code F9 when we run it. every few seconds it sounds funny, and things do not get warm in it. but the glide tray moves back and forth as normal.
sears will not give us any help at all with this code. can you help us?? we don't want to send to repair i it is not worth fixing. it is 3 years old.

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  • donald561 Jan 06, 2009

    my nuke: sears 721.63682300.. mfg date: 2/03.. it'll run for 30 seconds without heating, then shut down , then shows F9... lites, vent and kitchen timer work fine... any help out there??? thanx, don

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  • Kenmore Master
  • 9,011 Answers

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.

Posted on Aug 24, 2008

  • Lucia Tam Sep 23, 2013

    Thanks for the information, but it is still not clear how to fix it. How do you access the hidden manual?

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

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1.) IF your Microwave uses "UltraWave technology"/"SmartWave technology"...Then either the Magnetron has failed or the Inverter board has failed OR maybe the control board has failed (HUH?).
2.) IF your Microwave does NOT use "UltraWave technology"/"SmartWave technology" then one or more of the door switches has failed.

** "UltraWave technology"/"SmartWave technology" **
I'll explain a few things about this wonderful technology...
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