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fixed4free.com > Kitchen Appliances, Microwaves > Question
Kitchen Appliances, Microwaves

kitchen appliances, microwaves, microwave, turn, table, turn-table, bell, burn, fire, light, watt, radiation, 297 other questions

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Fault code H98?

What does fault code H98 mean on a Panasonic NN CS596S Convection Combi Steam Oven?

Pete A     January 2008
 Click here if you can answer this question 

Hi, got the code, cleaned the vents in rear, back to normal,mike

Mike     February 2018
 Top

I've tried unplugging it for 10 seconds or better and still the code still appears can you help me

Ricky     September 2017
 Top
My Panasonic combination microwave oven recently started cutting out after 25-30 seconds, sometimes displaying the H98 error code. Purely by chance, I turned the oven through 180 degrees and discovered that the fan inlet grill at the rear was almost completely blocked-off by a sort of cobweb of greasy dust and fluff, which must have caused a significant reduction in cooling air over the magnetron, inverter and other electronic components. After a thorough clean with a dry brush, the oven was restored to normal. The air intake grill is out of sight, out of mind!

Sylvia Hodges     March 2017
 Top
I'm angry.....cost me $800 and less than 3 years old.......
Same thing just happened to me H98

Maree - Melbourne     May 2014
 Top
chuck in bin like we are doing-very dissapointed-only 18 monthes old.panasonic no help even gave us wrong phone number for nearest dealer ..we're in skegness nearest dealer is kings lynn-miles away.won't buy panasonic trash ever again. wer'e off to lydl for a silvercrest-3 year guarantee not a poxy 1 year

mick and di -hugely dissapointed     April 2014
 Top
my microwave Panasonic NN-CS596S combi oven and grill has stopped working.

halim     August 2013
 Top
h97 is in the magnatron/inverter section of the m/v DO NOT ATTEMPT REPAIR unless you want to see st peter at the golden gates call an expert

stormynorm     February 2013
 Top
How to change the light bulb in my CS596s

John     March 2012
 Top
what does H98 mean

ronney     December 2010
 Top
According to Panasonic diagnostic code, H98 is a HV diode failure code. Their solution is to replace the inverter board - and I think they have an upgraded one for better reliability.

Henry (Ambassador Electronics)     October 2010
 Top
I have the same problem oven is only 10 months old fortunatly took out ext warranty, so far had engineer out 3 times has replaced magnatron, inverter & circuit board & fault keeps re-occuring cuts out part way through cooking, esp on combi mode. thought I just had a bad one as have had other Panasonic combis in past & have been great, I just fancied having steam function, clearly this model has generic fault & I will now be trying to get replaced with an older trusted model! - will keep you updated

Val     September 2009
 Top
Some microwaves have built in fault codes to help us determine what may be wrong when the microwave has a problem....







Panasonic

















Newer Panasonic Microwaves have a 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.



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.

Denise     January 2009
 Top
My Panasonic CS598S microwave has suffered catastrophic failure 3 times in 14 months; every time it is the inverter. I am returning it and looking at another brand. The reapir agent stated that Panasonic microwvaes were notouriously unreliable.

Ex Panasonic Buyer     October 2008
 Top
Mine's doing the same thing and I searched everywhere for a solution but no one has an answer...please let me know...if you got one!

Eduardo Masso     August 2008
 Top
Hmm, our Panasonic Steam Microwave (2 Months Old) shows the same fault. Seems like a generic problem here. Looks as if its a problem with the invertor or Magnetron.

Colin     April 2008
 Top
My microwave (Panasonic NN-CS596S ) is also giving the same error.

Any solutions?

Mal     January 2008
 Top
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