Question about Kenmore Microwave Ovens
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
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Posted on Jan 02, 2017
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
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
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.
Posted on Mar 26, 2009
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