Question about Panasonic NN-C994S Convection/Microwave Oven

2 Answers

No power Hi I relpaced the power inverter and the oven ran great for about 10 min then shut off and now there is no power to the display panel, and if I open the door the fan comes on and the turntable turns

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  • barntgr Apr 18, 2008

    The oven was shutting down after about 10 sec with smoke comming from the inverter, and the inverter smelt burnt

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2 Answers

No display microwave not working

Posted on Sep 05, 2008

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  • 975 Answers

What was the problem in the beginning before replacing the power inverter ?? most of the main problem is the DISPLAY PANEL that needs to be replaced ( membrane circuit ) and to be honest with you , is not worth it to replace it cause the price you going to pay , you better off purchasing a new one . now days we call it THE DISPOSABLES MICROWAVES . hope this helps

Posted on Apr 18, 2008

  • ALBERT GARCIA
    ALBERT GARCIA Apr 18, 2008

    ok !! then we need to look at a VOLTAGE REGULATOR in the POWER SUPPLY section , and to check on a big capacitor for a shortage .

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1 Answer

My sharp R409Y*A microwave overheats after 4 min every time and shuts itself off for a few min. It will turn itself back on, but if I use it right away, it will shut itself off again quicker.


I would say your cooling ran is not running, or your vent holes are blocked, or (if equipped) a filter is blocked.

Without the cooling fan, the magnetron overheats and its TCO (thermostat) shuts down all power to the oven until it cools back down to a safe temperature, then power is restored.

Feel free to e-Mail me at pupista@gmail.com if you need more free advice.

Sep 19, 2016 | Sharp Microwave Ovens

4 Answers

Model 72180883400 Microwave Oven F-9 Failure Code


If the unit is less then 5 years old i believe it is still covered it may be the inverter board or a grounded Magnetron tube. If you need any further assistance let me know. I would contact kenmore directly.
Thanks,
Lee

Sep 01, 2008 | Kenmore 62702 Microwave Oven

1 Answer

Trouble code H98


H97, H98 or H99 mean that there's a problem with your inverter, magnetron, or digital programming circuit.

R

Oct 03, 2014 | Panasonic NN-H765BF 1250 Watt Microwave...

2 Answers

Shuts off after approx 5 - 7 sec. some smoke


If it stops after 7 seconds, it has a problem with the inverter.

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.
If you prefer to replace the inverter yourself, you can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

May 15, 2010 | Panasonic NN-S954WF Microwave Oven

2 Answers

Microwave was ran for 5 minutes with nothin in it now no display


most have an internal fuse check it first if that is not it check the thermal fuse both parts run 10-15 dollars

Jun 30, 2009 | Maytag MMV4205 Microwave Oven

1 Answer

Split system not starting up for about 10 mins after turning on


Hi Wendy,
The manual for the unit is at this link. This should answer all your questions. http://panasonic.com.au/products/details.cfm?objectID=4601 then go to the bottom of the page and click on CS/CU-E18_21_24_28HKR Operation Manual

I take the time to answer you questions so please rate me
Thankyou
Mat

Jun 10, 2009 | Panasonic MCM INVERTER

1 Answer

Model 72180883400


Hi,
F-9 error code indicates a defective control board, inverter or line voltage too high. f the microwave runs for about 7 seconds with a ticking sound..then stops and shows "F-9", it is the magnetron that has failed. The fact that the unit starts and runs with the TICKING SOUND means the control board is sending signal to inverter board and the inverter board is sending signal to magnetron. Magnetron is covered by full 5 year warranty, inverter board is only 3 years.

Sep 01, 2008 | Kenmore 62702 Microwave Oven

1 Answer

Microwave F-7 Code


F7 is q Power to magnetron
interrupted

1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem.
3. Unplug microwave oven or disconnect power.
4. Check cooling fan operation
5. Check resistance of the magnetron thermostat.
6. Check the magnetron.
7. Check P2, P4 and P27 connections.
8. Check wiring to the 1100W inverters and control system. See
“Checking Inverters.”
9. Check operation of all interlock switches.
10. Replace inverter, if defective.
11. Replace all parts and panels before operating.
12. Plug in microwave oven or reconnect power.
13. If problem persists, unplug microwave oven or disconnect power.
14. Replace electronic control.
15. Replace all parts and panels before operating.
16. Plug in microwave oven or reconnect power.
17. If problem persists, unplug microwave oven or disconnect power.
18. Check for reversed plug connection on controls or loose wiring.
19. Replace all parts and panels before operating.
20. Plug in microwave oven or reconnect power.

Aug 08, 2008 | Whirlpool GH6177XP Microwave Oven

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