For an f9 error code on my kenmore elite microwave oven what would be the approx cost for repair?

Microwave Error Code F9 Troubleshooting

F9 is inverter related.

The F-9 error code indicates a defective control board, inverter or line voltage too high.

You can also visit the link to troubleshoot the issue.

http://www.ehow.com/how_7987910_troubleshoot-code-f9-kenmore-microwave.html

The F-9 error code indicates a defective control board, inverter or line voltage too high.
Read more: http://wiki.answers.com/Q/What_does_the_code_F-9_mean_on_a_Kenmore_Elite_Microwave_oven#ixzz1FMSrTmbU


Hope that answers your question and it won't be too expensive.
Check on ebay for prices.

The F9 error code indicates a failed inverter. If resetting the unit does not help you will need to have the inverter & harness checked.


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This can sometimes by caused by a power surge or glitch through the electrical lines.
You can sometimes clear this fault by completely unplugging the microwave for 1 minute.
Plug it back in and see if the fault code returns.
If it does, then you have an internal component failure that will need to be serviced by a technician.
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances.
Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged.
A microwave radiation leakage test must be performed on the unit following any internal component repair.

It does not ALWAYS indicate a inverter control board problem however in other brands/models.
LG's service manual (for an example) suggests the f-9 code could be due to line voltage, magnetron, inverter module, "Relay2", or a loose connection between door/magnetron/control pcb.
Other indications might help narrow down these choices before having to pull out your multimeter and crack open the microwave case.
For example, if the microwave works, but heats slowly, then the troubleshooting manual narrows your choices down to magnetron or line voltage problems, and pretty much rules out the other possibilities.

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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

No, the magnetron gets its power from the inverter assembly. The actual issue here is a defective or damaged inverter. Replacing the inverter assembly will correct this issue.

The F-9 error code indicates a defective control board, inverter or line voltage too high.

Repair or Replace them.


Thanks.

Quoting another board:

Sears Kenmore Whirlpool 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 procedures. 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.

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.