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Panasonic NN-CT559W stopped working displaying H97 in window

The combi is just 2 years old.

Posted by Anonymous on

6 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

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Panasonic NN-C994S stop 2 sec. after I press Start.

Sounds like the power inverter

Posted on Apr 18, 2008

robotek
  • 1512 Answers

SOURCE: h97

Hi there..

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

You can get a new invertor on ebay.UK from here


Here is some more information about the part. The microwave may also have a faulty magnatron. 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.


regards
robotek

Posted on May 07, 2008

Illeagle
  • 525 Answers

SOURCE: Panasonic microwave start button

You may have a sticky door switch. Try a simple "slamming" of the door, don't over do it, just a little harder than normal. This may help pop the plunger in the switch back up. The switch could have also become loose and moved out of its adjustment.
If this does not help, a technician should save you time and money with this sometimes perplexing problem.

Posted on May 24, 2008

  • 1 Answer

SOURCE: Panasonic NN-H264 1200...stops after 3 seconds

I found sufficient information elsewhere.

Posted on Feb 13, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: panasonic nn-s255 wont turn on

See if this describes what's happening:

  • Put in time, push start and unit runs for 2 seconds, relay clicks, unit goes off. Cook time on display goes off and clock time comes back. Bad upper interlock switch and charred connector
If so, see http://www.microwavedisplay.com/safety.txt , http://www.microwavedisplay.com/disassembly.txt and http://www.microwavedisplay.com/doorsw.txt

Otherwise, if the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.

It may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.


Due to the lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.

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

NOTE: The FixYa system is not currently notifying me when folks reply to my posts, so please contact me directly for more help.

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

Posted on Sep 12, 2009

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There are a number of possible causes.

The following link will take you to a page with the diagnostic flow chart that you can use to troubleshoot this issue:
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This customers review of that issue may also be of some help:
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My Panasonic NN-ST657W microwave has suddenly come up with an H97 code on display panel. Switches off after about 6 seconds before displaying this code. What has happened?


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.
There is not a lot the layman can do except maybe to try a new magnetron.
It is a job for an experienced Panasonic Microwave repair man.

Dec 31, 2010 | Panasonic Microwave Ovens

1 Answer

Hi, I have a Panasonic Inverter microwave NN-Sn9688. It's less than a year old and when you press the START button H98 appears and it will not start. Everything else works, clock etc and reset/stop...


Hi Judith, I am Kelly

If this has a 1 year warranty it is time to make that call.

Otherwise see this link about H97 or H98 codes: http://www.applianceaid.com/micro_faultcodes.html#panasonic

There are a few things that can cause the problem, none of them cheap repairs. The Magnetron filament, Control board and Inverter are the top 3 other than a losse connection.

I tried running the Model number NN-SN9688 and it does not cross. See Panasonic link here: http://www2.panasonic.com/webapp/wcs/stores/servlet/PNAEndecaSearchCmd?N=779832097&Ne=&No=0&Nr=12001&Ns=&Ntk=SupportSearch&URL=vSupportSearch&cmTag=true&catalogId=11017&storeId=15001&cm_sp=SiteSearch-_-SupportSearch-_-SupportHome&Ntt=NN-SN9688&x=28&y=20

I did not go to Panasonic Global and try other countries. I just did a USA search.

Thanks for choosing FixYa.

Kelly

Sep 10, 2010 | Panasonic Microwave Ovens

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Error code h97, on a genius prestige microwave - nn-sd787st. what does this mean?


Hello :

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.


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WARNING :

The microwave is capable of giving you a serious electrical shock even when it's unplugged , so I recommend you to call a repair technician for help .

please don't forget to rate .

good luck .

Apr 13, 2010 | Panasonic NN-SD797S Microwave Oven

1 Answer

Microwave stopped working suddenly,the sreen reads H97


If your oven is out of warranty then i would suggest just getting a new one.

The code is for a bad controller circuit, and it would cost almost as much to fix it as it would to buy a new one.

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