Neff 1420 fan problems

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Viewing 13 posts - 1 through 13 (of 13 total)
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  • #24798
    stinky
    Participant

    Ithe fan on my neff 1420 oven appeared not to work but when removed and checked on a bench it ran ok
    does anybody know what else i can check i have no circuits etc

    #203347
    Penguin45
    Participant

    Re: Neff 1420 fan problems

    Any heat?

    Penguin45.

    #203348
    stinky
    Participant

    Re: Neff 1420 fan problems

    The circular element around the fan seems to be OK as I can see the element glowing red.
    I have not left it on for any length of time to see if the oven gets hot. When I power the fan up with 240 volts on a bench it runs OK
    Thanks for your reply

    #203349
    gegsy
    Participant

    Re: Neff 1420 fan problems

    stinky wrote:When I power the fan up with 240 volts on a bench it runs OK

    Please note that we at UKW do not recommend nor see the need for this sort of LIVE testing. With a decent ohm meter the reading/s needed can be obtained. ❗

    Does the fan motor spin freely if you spin it by hand and not sluggish?
    We will also need ful Enr number, usually found around door opening on a silver plate.

    As for circuits etc may I refer you to http://www.ukwhitegoods.co.uk/modules.p … pic&t=4361

    Greg

    #203350
    stinky
    Participant

    Re: Neff 1420 fan problems

    I have measured the resistance across the motor and have 92 Ohms.
    Thank you for the advice, I am a fully qualified electrical engineer (HNC) so I am aware of the dangers of live testing.
    The fan turns ok by hand and makes no unusual noises
    I just need to know if there is a fuse or thermal trip in line with the fan motor that I can locate and check. If there is nothing else in line then could the problem be in the selector switch. I do not want to spend £65 on a fan and find it does not do the job.
    I appreciate the help

    #203351
    gegsy
    Participant

    Re: Neff 1420 fan problems

    stinky wrote:Thank you for the advice, I am a fully qualified electrical engineer (HNC) so I am aware of the dangers of live testing.

    That is of no significance. What we have to consider is the amount of general public that may read this and TBH any posts in the public forums, who may not be as aware of the potential dangers as you or I 🙂
    For me to go any further I would need that full model number as requested please.

    Greg

    #203352
    stinky
    Participant

    Re: Neff 1420 fan problems

    I take your point.
    At the moment I am in my office I will get the full details and inform you of them as soon as possible

    #203353
    stinky
    Participant

    Re: Neff 1420 fan problems

    Greg,

    The E No is 1420KOGB or another number on the model plate is FD 7701

    Just traced wiring at lunchtime and thethe supply live and nuetral get to the fan terminals via the oven switch assy and a block (about 10mm square that is short circuit) . Although the live side has to come through the programmer board. As the element comes on can I assume that the supply is getting to the oven switch. If it is then I am puzzled why it does not run the fan 😕

    #203354
    gegsy
    Participant

    Re: Neff 1420 fan problems

    Hi
    Im taking model number as U1420K0GB/01.
    Looking at wiring I would imagine that if you have heat and no fan operation then its looking like a faulty selector(S9) IMHO.

    Greg

    #203355
    BSH-MAN
    Participant

    Re: Neff 1420 fan problems

    Somtimes 😳 the fan motors can get “gunged” up.
    You may have freed up the motor just by turning the shaft.
    Are you sure there was no voltage to the fan when it was on the oven?

    #203356
    gegsy
    Participant

    Re: Neff 1420 fan problems

    Good point, but without LIVE testing, did you hear a hum coming from fan motor when oven activated as that also will indicate what BSH MAN has said, and only a motor replacement will be the only option.

    Greg

    #203357
    stinky
    Participant

    Re: Neff 1420 fan problems

    Thank you for the help i put it all back together last night and checked operation at each stage. Tha fan did not work at final stage with large cowling on. I am resigned to ordering a new fan and fitting that.

    #203358
    BSH-MAN
    Participant

    Re: Neff 1420 fan problems

    Did it work fitted to the oven but with the cowling off?
    If so, check the inside of the cowling for fat deposits that may catch on the fan blade.

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