Question about Panasonic NN-SN657S Microwave Oven

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Panasonic NN-CS596S Convection Combi Steam Oven

Hi There. We are proud owners of a new Panasonic NN-CS596S Convection Combi Steam Oven, purchased this week.

We are have in problems with the microwave, as follows. Setting the microwave it runs for perhaps 10 seconds and then goes off, not completing the cooking, regardless of the time or programme we set. Can you help? Are we doing something wrong?? or is it a fault on the oven?

Thanks in advance. Mike

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  • man290663 Dec 28, 2008

    Mine has this isse when opening the dorr midway to stirrr - the First time its OK and continues cooking but he second time once you press start it  works for less than 1 second then resets istelf going to the clock and every further use of the micorwave does the same 1 second then reset. until the unit it turned off then on..


    the unit is brand new and is likley to returned tomorrow for a full refund as its impossible to doeggs !

  • Anonymous Jan 15, 2009

    Microwave runs for about a second then shuts off.

  • Prof Bob Feb 19, 2009

    I have the same problem fault code H98 means the inverter board is faulty. The cost of the part exceeds 150 GBP. If you check other sites it appears to recurr after being fixed at intervals of approximately 3 months. If this happens to you I suggest that you insist on a cash refund and then buy a different unit. If you live in the UK call your local trading standards office, they helped me.

  • Anonymous Mar 28, 2014

    Was cooking and power went off and won't come back on

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Hi i have the panasonic combi and on the microwave it will work for a few seconds and then stop and on the screen it shows h98 please help

Posted on Sep 13, 2008

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The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

Let us know if the hard reset does not fix it.

If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter or a bad magnetron.

If you do indeed have a problem, Since it's less than one year old, it should be fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

I would recommend that you contact your nearest Panasonic-authorized servicer.

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

Posted on Aug 18, 2008

Thanks for this. Thats exactly what I did. It didn't work at first, however, I think it was my impatience! After selecting the Microwave, you MUST wait until you are told via the screen to input the time. It now works fine. Thanks again. Just needed perseverance! Mike

Posted on Aug 18, 2008

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