Question about Kenmore Microwave Ovens

1 Answer

Our microwave stops after a few seconds and code comes up F9

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Kenmore Master
  • 9,047 Answers

It of course depends on the model number, but here's some discussion from other boards:

F-9 on this microwave IS inverter related. There is a service tech troubleshooting document stuffed in behind the control board cover which has some testing proceedures. My problem was the magnatron and checked out bad with the help of this document. It would run for a few seconds making clicks and then say F-9. It has been working great since I replaced the magnatron PN 6324w1a002c.

f9 model 721.63764300
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.

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

But Sears parts can usually be obtained for far less here by entering either the part number.

A full Sears/Kenmore model number has 3 digits, a dot, then 8 more digits, such as ###.########.


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

Posted on Sep 08, 2010

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Kenmore elite microwave displays F9 after a few seconds

I have the same problem. The sears guy told me that I needed a phillips screw driver and a torx adapter/driver to remove the entire microwave cover ( it slides off0 to gain acess to remove and replace the bulb.

Posted on Jan 12, 2009

  • 408 Answers

SOURCE: MICROWAVE WILL NOT HEAT. F9 APPEARS IN THE DISPLAY WINDOW

F9 indicates a problem with the door latch.  There is a safety switch that will not allow the microwave to operate if it detects the door is not closed properly.  Even though physically it may seem the door is shut, the safety switch is not relaying the message to the onboard computer.  You need another door latch switch.

Posted on Mar 10, 2009

rylee_smith
  • 8619 Answers

SOURCE: 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

Posted on Mar 26, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Microwave stays on for about 15 seconds, shuts off and shows F9 as problem.


There's quite a few different makes and models out there with loads of different codes. Please tell us WHICH make AND model microwave you have and we can check the servicing guides for you.

Dec 27, 2014 | Microwave Ovens

1 Answer

Microwave runs for 5 seconds then shuts down displaying F9 HELP


If the microwave runs for a few seconds and stops the touchpad might be at fault. This is not common. Generally speaking, if the microwave display is working and some of the buttons respond correctly but some don't, the problem is with the touchpad

Oct 19, 2014 | LG Microwave Ovens

1 Answer

Why does my microwave stop working and flash F-9


Since this an LG microwave, an F9 error when the inverter module fails. Unfortunately, other parts could cause the inverter to read as a failure. A bad magnetron, relay 2 or door switches or the connections between the various parts could be bad. Since the microwave is starting, the switches are the least likely culprit. However, it's hard to determine if the inverter or the magnetron is bad without replacing one part. Then the other if the first repair doesn't solve the problem.

I hope this helps.

Cindy Wells

Mar 19, 2013 | LG Microwave Ovens

1 Answer

Hit the start button and runs for 6 sec then code F-9 can't find manual


You didn't mention your brand or model, but F9 code on an LG sometimes means either a bad door switch or a loose door switch mount.

See this file on door switches.

If a switch is all you need, we offer a universal type for only $5 postpaid which you can order here.

Here is more info on F9 as it relates to some brands and models:

Sears Kenmore Whierlpool LG 721.63683300

"F-9 on this microwave IS inverter related. There is a service tech troubleshooting document stuffed in behind the control board cover which has some testing proceedures. My problem was the magnatron and checked out bad with the help of this document. It would run for a few seconds making clicks and then say F-9. It has been working great since I replaced the magnatron PN 6324w1a002c."

"f9 model 721.63764300
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.
"

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

Jul 02, 2010 | LG LMVM1945 Microwave Oven

1 Answer

F-9 problem


Hi, generally the F9 code indicates a problem with the door latch (usually upper) or with the control board.

You can do a Google search for my text file "doorsw.txt" to help you diagnose and repair door switch trouble.

BUT - since it always stops at 53 seconds, that leads me to think you have trouble with the control unit (circuit board / controller assembly).

Once you read and digest the info on door switches, please feel free to do an updated post and I'll be happy to help you further.

It may be corrupted ROM in the control unit.

Take care

May 20, 2010 | Kenmore 64683 Microwave Oven

1 Answer

MICROWAVE WILL NOT HEAT. F9 APPEARS IN THE DISPLAY WINDOW


F9 indicates a problem with the door latch.  There is a safety switch that will not allow the microwave to operate if it detects the door is not closed properly.  Even though physically it may seem the door is shut, the safety switch is not relaying the message to the onboard computer.  You need another door latch switch.

Mar 10, 2009 | Kenmore 63663 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

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

F-9


Need to know the entire model # on the microwave.

Oct 05, 2007 | Microwave Ovens

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

323 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kenmore Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9047 Answers

Jaime Hernandez

Level 3 Expert

2315 Answers

Jim Thurston

Level 3 Expert

670 Answers

Are you a Kenmore Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...