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Error 305 message on neff microwave / grill

Error 305message comes up and microwave stops working after approx.5-10secs

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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

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MicrowaveSvc
  • 9047 Answers

SOURCE: neff h7871

If it went dead almost immediately after pressing the Start pad, that\'s usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that\'s usually a failing high-voltage transformer.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


We\'re happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jul 06, 2008

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SOURCE: Neff HTHB86K Microwave oven.

The microwave unit is faulty as you can read from the display or the controller isn't working correctly, you should take your MW oven to an authorized service center. It can be repaired by yourself but it's highly dangerous because it has high voltage inside and microwave energy.

Posted on Feb 15, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Works for approx 30 secs then it cuts off with a error Code F7 message.

Assuming yours is a model KHMS2050SSS0, here is what the technical sheet says about the F7 error code:

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 the magnetron.
6. Check P65 connection on the relay control board.
7. Check the P56/P66 connection between relay board and relay control board.
8. Check wiring to the 1200W inverter and control system. See “Checking Inverters.”
9. Check operation of all interlock switches.
10. Replace all parts and panels before operating.
11. Plug in microwave oven or reconnect power.
12. Check voltage at 4903-1 on relay board. If it is 120, unplug microwave oven or disconnect power.
13. Replace inverter.
14. Replace all parts and panels before operating.
15. Plug in microwave oven or reconnect power.
16. If problem persists, unplug microwave oven or disconnect power.
17. Replace relay control board.
18. Replace all parts and panels before operating.
19. Plug in microwave oven or reconnect power.
20. If problem persists, unplug microwave oven or disconnect power.
21. Check for reversed plug connection on controls or loose wiring.
22. Replace all parts and panels before operating.
23. Plug in microwave oven or reconnect power.

(This troubleshooting guide presumes one does not know how to test electronic components. That's why they say to replace and part and check it again.)

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

If yours is a different model number, please reply back.

Posted on May 26, 2009

  • 23 Answers

SOURCE: microwave turns itself oo

it sound like the inverter unit is faulty or the magnetron is gone.the only real way to find out which is to change each one in turn,sorry i cant be any more help.if you have any more questions get back in touch,regards les

Posted on Jul 28, 2009

  • 228 Answers

SOURCE: Neff Microwave H5470SOGB

if appliance runs for approx twenty seconds this is nearly always a magnetron fault usually a cracked magnet or burnt out anode the electronics are detecting an unusual power fluctuation and shutting appliance down for safety you will need service tech to sort.

Posted on Aug 05, 2009

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1 Answer

Neff b6774N0gb/02. Inner glass shattered. replaced. Internal fuse blown. replaced. Now microwave working (heating water) for approx 5 sec, then switching off, beeping and showing E1 fault. Also display...


Usually if this model stops after approx 3 secs it is an invertor or mag fault. Check that the aerial cover is clean Page 3 of the breakdown part position 315. If this is really grubby it would be the cause of the door shattering. The PTC is not used on the microwave function so may be an additional fault. Check also the alignment of the door switches as this can also cause a similar fault. My best guess is if you remove the mag, you'll probably find scorching on it and it (and the invertor) will need replacing.

Mar 25, 2013 | Neff Microwave Ovens

1 Answer

Stops after 2 seconds


Stopping after 2 secs usually means the inverter or magnetron have failed, or worse case scenario both. A microwave can be storing up to 4000 volts even when switched off, so if you're unsure of what you are doing I would suggest that you get an expert to look at it. BSH is the repair section of NEFF 0844 872 8999, the offer a repair plan, where you pay a set amount (Approx 170 pound) which covers your first repair and any further repairs for a year and you can pay by direct debit monthly to spread the cost. The inverter is approx 200 pound and the magnetron is about the same, so it's a pretty good deal as to replace the whole oven is 600-700 pound.

Jan 03, 2013 | Neff Microwave Ovens

1 Answer

Neff h7871


If it went dead almost immediately after pressing the Start pad, that\'s usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that\'s usually a failing high-voltage transformer.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


We\'re happy to help and we appreciate your thoughtful rating of our answer.

Jul 06, 2008 | Neff H7871 Convection/Microwave Oven

1 Answer

I have a Neff Microwave/Oven/Grill combo. The grill and the oven parts still work, but the clock has gone off and the microwave part does not work. What can i do to fix this?? Thanks


The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

Let us know if the hard reset doesn't fix it.

Jun 25, 2008 | Neff Microwave Ovens

1 Answer

Neff microwave combination oven


no solution sorry but we also have a Neff mw/combi oven which keeps blowing for no apparent reason, the Neff repair man has looked at it 4 times and practically replaced every component -power module, operating module,relay board, door switches but it`s just gone again! The model is a H5972N0GB/01 and it is approx 3 yrs old, no problem for the first 2 years .Time to write to Neff -is yours the same model?

Apr 23, 2008 | Microwave Ovens

1 Answer

Neff HTHB86K Microwave oven.


The microwave unit is faulty as you can read from the display or the controller isn't working correctly, you should take your MW oven to an authorized service center. It can be repaired by yourself but it's highly dangerous because it has high voltage inside and microwave energy.

Feb 15, 2008 | Microwave Ovens

2 Answers

Noisy Fan in Neff Combi Microwave/Oven. B6774.0gb


yes you can fix it yourself it is a cooling fan in the top it is round metal fan quite small venting waste fumes from cavity when grilling etc need to remove top panel and 3 screws to remove it is a push in fit.

Jan 15, 2008 | Neff B7740N0GB Microwave Oven

1 Answer

Neff Microwave H5470SOGB


if appliance runs for approx twenty seconds this is nearly always a magnetron fault usually a cracked magnet or burnt out anode the electronics are detecting an unusual power fluctuation and shutting appliance down for safety you will need service tech to sort.

Jan 05, 2008 | Neff H5470 Microwave Oven

1 Answer

Neff Microwave


check control circuit and full wiring and connectors.

Dec 01, 2007 | Neff H7871N2GB Convection / Microwave Oven

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