Question about Panasonic NN-C994S Convection/Microwave Oven

1 Answer

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

Panasonic NN-C994S clock works, I can set a time, but when I press start It shut down after 2 sec. and display only show culums (:) if I press any buttom it show clock again.

Posted by on

  • 1 more comment 
  • Casuall Mar 23, 2008

    I am having the same problem, I press start and it shuts down after 2-3 seconds but I can smell burning plastic smell. IT worked last night fine. We have never put anything in there like metal. Is it worth fixing this is only two years old

  • Anonymous Mar 30, 2014

    Set time

  • Anonymous Mar 31, 2014




1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Sounds like the power inverter

Posted on Apr 18, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How do I set the clock on a Panasonic microwave nn-e271wm

To set the clock, you need to press Timer/Clock twice. Then press the 10 Min keypad several times until you get to the correct hour. Then press the 1 Min keypad as needed to get to the closest 10 minute period below the current time. Finally press the 10 Sec keypad several times to reach the current time. Then press Timer/Clock once to exit the time set feature.

Panasonic has the manual for the NN-E271WM on their downloads page: . Enter the model number and then click View. You will need to accept the Panasonic Terms Of Use and click View again. The direct link to the manual is currently . See page 21 in the manual (23 in the PDF) to see the procedure.

I hope this helps.

Cindy Wells

Dec 05, 2016 | Panasonic Microwave Ovens

1 Answer

Wont come out of demo mode!!!

Try pressing the clock button 3 times.
You press the high power button once and then stop cancel button four times in rapid succession.

Jun 02, 2011 | Panasonic NN-C994S Convection/Microwave...

2 Answers

Demo mode on

The instructions to turn the demo mode OFF on the model you have listed, can be found on page 24 of the owner's manual. Press the CLOCK pad three times to clear. If you no longer have an owner's manual, you can download a FREE copy at Here's a direct link:

I hope this helps you.

May 03, 2011 | Panasonic NN-C994S Convection/Microwave...

1 Answer

I have a Panasonic microwave convection that runs for 2 or 3 seconds, then cuts off. It doesn't matter what setting or length of time you program into it, it will run a couple of seconds and shut down. Is...

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 , and

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.

That 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.

Sep 08, 2010 | Panasonic NN-C994S Convection/Microwave...

3 Answers

How do I get my Panasonic Inverter microwave out of demo mode? I think my toddler might have hit something to put it in demo!

Hello Two options to try: a) Press the Clock / Timer button 3 times b) Unplug, wait a few seconds, then re-plug to power up with the factory settings. You will need to reset your clock and any favourite settings.
This should work with all Panasonic Microwave models.
Good luck

Aug 10, 2010 | Panasonic NN-H275 Microwave Oven

1 Answer

My Panason NN-C994S is on demo mode and I am unable to switch it back? Do you have instructions to convert back to cooking mode. Thank you


If you go to the Panasonic site you can download the manual.

Alan Hood

Apr 05, 2010 | Panasonic NN-C994S Convection/Microwave...

2 Answers

Panasonic NNA554W

Try pressing the clock button 3 times.

Jun 22, 2009 | Panasonic NN-C994S Convection/Microwave...

1 Answer

The microwave works for only 8-9 seconds, then stops

It may be in demo mode.  On some units if you hit the timer/clock button 4 times to turn demo off.

Feb 02, 2009 | Panasonic NN-C994S Convection/Microwave...

Not finding what you are looking for?
Panasonic NN-C994S Convection/Microwave Oven Logo

1,329 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9098 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 2 Expert

225 Answers

Are you a Panasonic Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides