I have a KEB F4 INVERTER with an E. OL Error.

I have had the inverter serviced and tested and all is good. Some parts were replaced Is there a method of re attaching the inverter to the cnc machine ? Or do you just plug it in and start the machine? I can run the machine up to about 130rpm, but anything greater the machine goes to 100% load and eventually shuts down. What could cause this high load ? Thanks Warren

Brad Brown Aug 13, 2022

Hi Warren , I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Need info on the CNC that you are using

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Jes2251sj runs for about 3 seconds and stops. what is the most likely bad part

I see your unit has an inverter, typically when a unit with an inverter shuts down after a few seconds, it means the Inverter or magnetron is likely bad. sometimes both. The only thorough way of checking the inverter is to replace it and run the unit. If the mag is bad this will also blow out the new inverter. I have gotten a bit gun shy from these and typically estimate to replace BOTH to avoid one or the other being bad and damaging the new good part. Probably cheaper to replace the unit.

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Sep 21, 2017 • Microwave Ovens

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WHIRLPOOL MICROWAVE GIVING F-7 CODE

hello sir

you are right magnetron is fully interrupted....... but tell me !. do you want to repair machine( 4 sec problem) 2. do you want to buy inverter , magnetron please tell i am ready to help you sir

I believe that is a microcomputer board failure. You will have to replace this board. Website below.

I have gotten parts from "repairclinic" on line and they worked fine. I saved $600 on the last repair of an oven. Good luck.

or sir you can find and fix each and every type of code error

http://www.applianceaid.com/micro_faultcodes.html#WLP

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Oct 18, 2008 • Whirlpool MH6140XK Microwave Oven

tip

Panasonic error codes h97 h98

If it is displaying error H97, or h98, this generally means that the invertor(power supply Panasonic part number: Z606YM300BP,) is not functioning. The magnetron may also be faulty.

Here is some more information about the part. The microwave may also have a faulty magnetron. If you are unsure, then you should get someone to look at the unit for you before you go buying parts.

BEWARE... VOLTAGES INSIDE MICROWAVES CAN KILL

Panasonic part number: Z606YM300BP, supersedes all previous versions of the inverter used with the 2M261-M32J This Inverter is now available at a lower cost, it used to be £60.00 plus VAT and delivery trade price.
This inverter is fitted to many of the more recent Panasonic inverter type microwaves such as the NNC596S .Some microwaves such as Bosch and Siemens also use this inverter as they are rebranded Panasonic ovens. These ovens are upmarket models, some include advanced functions such as steaming and are normally well worth repairing.
The inverter as fitted to earlier ovens with the 2M236-M42 and 2M236-M1 is also available.

An inverter microwave oven is one without a high voltage transformer You will know you have one as it is not extremely heavy at one end. This type of microwave uses a high power DC converter, called an inverter, to produce the high voltage and filament voltage required by the magnetron.
If you purchase this item for replacement in your microwave then we recommend that you do this only if you are qualified and aware of the dangers of tampering with electrical equipment.
Failure of the magnetron is common and at times the inverter can fail as well. Sometimes the inverter fails on it's own. If your microwave blows the 10 amp mains input fuse as the cooking cycle starts then you probably need a new inverter. An instruction sheet with basic guidelines on fitting will be provided but please do not purchase this item unless you are confident about fitting it. We only accept returns if the inverter supplied is defective which is extremely unlikely.
If you have one of these ovens that is not cooking then it is worthwhile looking at the magnetron. It often shows signs of distress through overheating.

As well as the inverter failing it is also possible you could also have a defective magnetron,

Good luck and thanks for using FixYa

A FixYa rating would be spot on for this information to you.

ask
robotek

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on May 07, 2008 • Panasonic NN-SN657S Microwave Oven

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Can we reset the code H98

Sorry no. H98 means the microwave has detected that the high voltage diode is defective. If the oven is out of guarantee, you might find a local servicing place to repair it - the diodes are only a couple of pounds (few dollars) BUT knowing panasonic, it might be part of a module that cannot be opened up.

Sorry but there is no reset for a failed diode and the approved fix is to replace a complete inverter board. Apparently this is a known fault and the replacement board is different to the original. If you are a good negotiator you may just get a repair even if out of guarantee as there is a known defect. Try asking nicely on their facebook page if they have one. Often gets results.

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Dec 27, 2014 • Panasonic Microwave Ovens

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How do I fix the H98 error on my microwave

You haven't identified the brand, make or model but this may be helpful:

Newer Panasonic Microwaves have built in fault codes....

they look like H97, H98....
Troubleshooting of Inverter Circuit (U) and Magnetron
This oven is programmed with a self diagnostics failure code system which will help for troubleshooting, H97, H98 and H99 are the provided failure magnetron and inverter circuit problem areas. This section explains failure codes of H97, H98 and H99. H97, H98 and H99 appears in display window a short time after start key is pressed and there is no microwave oscillation.

NOTE:
DO NOT try to REPAIR this Inverter Power Supply (U) and also DO NOT RE-ADJUST PRESET VOLUME on the board. It is very dangerous to repair or adjust without sufficient test equipment because this circuit handles very high voltage and very large current. Off alignment or inverter board operation is dangerous. Operating a misaligned inverter circuit is dangerous due to the very high voltage and current that is produced by this board. Defective boards must be replaced with a new one.
- Check magnetron filament for open or short to casing before proceeding to determine a good magnetron.
Alternative way to troubleshoot oven with AC Ampere meter used.
H97, H98 and H99 appears in display window a short time alter start key is pressed and no microwave oscillation with AC Ampere meter used for troubleshooting.

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Sep 09, 2014 • Microwave Ovens

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Error code F81

A short somewhere and bad if it blows instantly--a shop repair as could be control problem or bad inverter(power for the unit) or even a bad magnatron---someone who knows their way around in this type of unit would have to make some tests---both the inverter board and the magnatron are over 100 each parts.

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Jun 16, 2012 • Panasonic NE2157 - Pro I Microwave Oven,...

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F-9 Error code

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

http://media.fotki.com/1_p,wbgdfgsrsttwqwbxgtqsskgwtqkq,vi/kgdfkfrkkxkfdtftrfb/1/1303472/5961857/image45625img-or.jpg

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.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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Jan 17, 2009 • Kenmore 80809 Microwave Oven

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Microwave start and after a few seconds it shutdows

That is typically a bad mag or a bad inverter. Sort of pricey either way. Hard to test the inverter without a good mag and running the unit and testing the amp draw. I repesented Panasonic and stopped doing warranty service for them because of that Inverter System. The inverters fail so often and are a bear to confidently diagnose. Sure there are tests at certain points you can do, but you really cannot difinitively test the mag without just applying the proper voltage to it and see if it fires. For the cost of new Microwaves today. I personally would RUN! There are tracer signals that must go from the main board throught the inverter system and back to the main board. If something interferes with that is will shut down or give you a code. So Ultimately it could be MAg, Inverter, or Main PCB, not worth it. Get a new unit with full warranties and be done with it. You will save money in the long run.Good Luck!!

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Aug 14, 2017 • Panasonic NN-T655SF Microwave Oven

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1answer

Panasonic nn-sn667b 1300w dead

You might consider just replacing the inverter assembly itself.

It will cost more than replacing the bad discrete components of course, but you would be avoiding the time and money involved in parts research, trial and error, and possible destruction of any newly installed parts if there remain other undiscovered defective components.

The inverter assembly (part # F606Y8M00AP) can be had for $79.12 here.

Otherwise, you would need to order the service manual, which is not listed by the major Panasonic distributors.

The service manual should be # SM-NNSN667.

The best place to order Sharp parts is Tritronics. Or you can call them toll-free at 866-779-5835.

In this case, call might be more productive to track down the service manual.

Good luck, and be safe.

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

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Dec 24, 2008 • Panasonic NN-S954WF Microwave Oven

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Inverter replaced , Failed gain

The magnetron may also be bad, or if there were any weak or inadequate solder joints on the board, that can cause some pretty spectacular failures.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.microtechfactoryservice.com/mag_test.html
(continuity can be good even though it is bad!)
http://www.microtechfactoryservice.com/diode.html (if it is NOT shorted, it\'s probably fine)

http://www.microtechfactoryservice.com/xformer.html

Good luck.

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Nov 10, 2008 • Panasonic NN-H644WF Microwave Oven

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