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F-9 appears on microwave when I try to heat somethingIt

After about 5 seconds ticks off F-9 shows in window & microwavestops. Clock works but not micro. 2004 Kenmore Model# 731.64683300. Ser# 401KM01184

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  • Microwave Ovens Master
  • 8,968 Answers

First of all, I would bet your model number is 721.64683300 not 731.64683300, right?

The F9 problem in this microwave is a bad magnetron or inverter.

From other users:

"F-9 on this microwave IS inverter related. My problem was the magnatron and checked out bad with the help of (the tech sheet). It would run for a few seconds making clicks and then say F-9. It has been working great since I replaced the magnatron."

"f9 Kenmore Elite 36 " over tne counter microwave is supplied by LG made by Gold Star, made in China. It's main problem is the high voltage inverter board supplyed by Sears Parts. If you get a F-9 code on your microwave display screen and the micro quits it's probably this board. Reset the machine by pulling the power plug and waiting an hour. If it is the high voltage board is at fault it will probably fail after 45 seconds of start up. This part is really hard to get at but is less than $100. A qualified technician should be able to remove and repair this item in less than hour. Some techs will quote you $300 labor, don't buy it, it should cost a $100 or less. No need to buy another microwave."

The first thing I would suggest is a hard reset. Unplug the unit for several minutes or so. Then plug it back in, set the clock and try again.

If it fails again and you or someone you know decide to look into it further, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

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.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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

The magnetron probably has an extended warranty beyond the normal one year parts and labor warranty.

So I would consult your owner's manual or contact Sears for details on the warranty.

To get your owner's manual, just enter your full model number at the Sears parts site.

On the resulting page, look to the right for the blue "View Manuals" button.

That Sears-related site has many free manuals. While the manuals they list there are all free, they will ask you to register.

If yours is not listed there for free, you would have to order it through 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 Dec 16, 2008

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I have accidentally locked my microwave oven (profile performance convection oven). I was cleaning the front. Can you tell me what to do?


Got you covered. Here you go:

Microwave - Explanation of the Child Lock Out Feature
Many microwave control panels can be locked to prevent accidental use or access by children.
There are two different ways to lock the control panel:
1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".
2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.
To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)
Microwave - Explanation of the Child Lock Out Feature

Many microwave control panels can be locked to prevent accidental use or access by children.

There are two different ways to lock the control panel:

1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".


2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.


To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)

That info is from GE

Hope that does the trick.
Regards, Farmerbear at FixYa.com






























Microwave - Explanation of the Child Lock Out Feature

Many microwave control panels can be locked to prevent accidental use or access by children.

There are two different ways to lock the control panel:

1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".


2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.


To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)

Microwave - Explanation of the Child Lock Out Feature

Many microwave control panels can be locked to prevent accidental use or access by children.

There are two different ways to lock the control panel:

1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".


2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.


To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)

Sep 13, 2010 | General Electric Microwave Oven

2 Answers

No Heat but everything else works


Magnetron and diode most likely. Need more info.

Nov 02, 2009 | GE XL1800 1100 Watts Microwave Oven

1 Answer

Microwave


Hi

3 things can fail - the control board, the inverter board, or the magnetron. If 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.

If this is not the case then it could be a defective control board, inverter or line voltage too high.

Please do rate the solution as "FixYa" if found useful and revert for further assistance.

Thanks
Rylee

Mar 26, 2009 | Kenmore 63682 / 63684 / 63689 Microwave...

1 Answer

Whirlpool over the Stove Microwave


This sounds like the unit is defective and if I were you I would return for replacment!

Dec 16, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

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.

Sep 01, 2008 | Kenmore 62702 Microwave Oven

1 Answer

How do i set clock for time of day


You can download your owner's manual free here.

From the manual:

SETTING THE CLOCK - When the microwave oven is plugged into an outlet, the oven will display " 0:00 "

1. Press the CLOCK button; the hour digit will blink
and the clock indicator will light.

2. Press the number keys to set current hour.

3. Press the number keys to set current minute.

4. Press AM/PM to choose AM or PM.

5. Press the CLOCK button again; the display will
show the present time. After the clock has been
set, the time will appear with blinking colon,
unless the oven is cooking or defrosting.

NOTES:

- To reset the present time in the display window when the oven is off, press the CLOCK button and
reset.

- If you make a mistake when setting the time, press the STOP/CLEAR button.

- To recall the actual time while the oven is cooking or defrosting, simply press the CLOCK button
and the display will show the actual time for three seconds.

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

Jul 03, 2008 | Emerson MW8107WA Microwave Oven

1 Answer

F-9 Error after running a few seconds...


If this is a "SmartWave" branded microwave oven then F9 is an error that indicates an inverter board or magnetron has failed. Either way.. Try this...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....Else in may be a door switch problem

May 30, 2008 | Microwave Ovens

2 Answers

Power cuts out after about 5 seconds


Hi try unplugging form mains for an hour this will reset any settings back to factory settings let me know what happens after doing this then i can assist you further ok

Mar 19, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Timer Shuts off after 5 seconds


The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

Is it 5 seconds or 5 minutes? The difference coulsd be important, but either could indicate a bad magnetron.

Let us know if the hard reset doen't fix it.

Please write back with more details if you need further help.

We appreciate your thoughtful rating of our answer.

Nov 18, 2007 | GE JES1289SK Microwave Oven

1 Answer

F-9 error on LG microwave


This is 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. You can find support for service or parts at http://us.lge.com/support/support.jsp

Sep 15, 2007 | LG LMVM1945 Microwave Oven

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