Question about Kenmore Microwave Ovens

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Model number 721 82364200. Code F9 continues to show up. Seems to be connected to clock. Works intermitting. Makes a noise when working but is very inconsistent. Not sure what to do.

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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.

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Posted on Dec 31, 2010

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1 Answer

F9 code


As always, we would really need the full model number from the tag on the unit to be able to give you detailed help.

Otherwise we can only help in a general sense.

Please post a new help request with your full model number and very detailed symptoms, namely what it's doing or not doing, and when.
But F9 generally indicates a problem with the door latches or switches, except on microwaves, for which F9 is usually a problem with the inverter or related circutiry.

Dec 10, 2012 | Microwave Ovens

2 Answers

Kenmore built in microwave - f9 error


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.

Oct 12, 2007 | Kenmore 63652 Microwave Oven

1 Answer

The display works (clock, mode, etc) I can push


We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week or so.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

The lights can can be inoperable or stuck on or stuck in "night light" mode. Sometimes this will similarly affect the fan operation or inside light, too.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com
Microwave Oven Control Panel Repair Nationwide

Apr 27, 2010 | Whirlpool GH9176XM Microwave Oven

1 Answer

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


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

Oct 07, 2009 | Kenmore Microwave Ovens

1 Answer

Microwave doesn't heat.


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.

(((The fuse is located inside the unit along side the magnetron)))

Sep 18, 2009 | Microwave Ovens

1 Answer

Kenmore Microwavonly works intermittently shows F9 what is wrong?


There could be one of many possible failures causing the "F9" fault code. It could be a loose wire connection between the magnetron, control PCB or the inverter. It could have failed PCB, inverter module or magnetron. I recommend calling a service technician to diagnose and repair your microwave. NOTE: Do not attempt to

Sep 15, 2009 | Microwave Ovens

1 Answer

Makes loud noise and doesnt heat. Timer, clock, turntable & other things work. Model # 665.61632100


Most likely the magnetron is bad. I'm guessing a household model. Unplug unit and unplug the connection at the magnetron and run again. The noise will likely be gone. If you do replace the magnetron, replace the diode that goes with it.

Sep 10, 2009 | Microwave Ovens

1 Answer

GE SPACEMAKER XL1800 DOES NOT WORK


We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

Feb 01, 2009 | GE JVM1850 1000 Watts Microwave Oven

1 Answer

Humming sound, F9 and dead


Seems like I answered this, but maybe it's a different poster.

The 721 model code means it's an LG/Goldstar-made oven and F9 indicates a problem with the inverter or magnetron.

Due to the lethal voltages involved, I do not recommend that a person without training and experience ever work on these models.

I would suggest you contact Sears for service.

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

Jul 19, 2008 | Kenmore 64683 Microwave Oven

2 Answers

Kenmore elite utra microwave 721.63763300


Your model number prefix of 721 means it's made by LG / Goldstar.

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

Even though a door switch clicks, it may still be bad inside.

This can be caused by slamming the door or by habitually opening the door while it's cooking without hitting the Stop pad first.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is 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://www3.sears.com (the 3 is correct)

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

Jan 20, 2008 | Kenmore 62622 Microwave Oven

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