Bosch HBG674BS1B built in oven (series 8) error E6100

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  • #101307
    micdev42
    Participant

    Hello.
    We inherited this oven when we moved in about 18 months ago. It was installed new about 6 years ago. It is one of Bosch’s top of the range series 8 models.
    Prouduct: https://www.bosch-home.co.uk/product…ens/HBG674BS1B

    After having the fan oven on (at 160) for about 5 mins it flashes E6100 error and beeps. The fan at the back of the oven stops turning. After that all I can do is turn it off – it will not continue cooking.
    Googling it seems that replacing the fan motor is the fix. This I duly did (£90 part), but I get exactly the same error. The fan motor I replaced, although a bit grubby, was spinning smoothely.
    I found a fault codes PDF on the web (see the answers here: https://www.justanswer.com/australia…ays-e6100.html).
    It says after replacing the fan to replace the control board… Another £125…

    Before I do that, does anyone know how to get into the self test / service menu so I can get a bit more info.?
    Do you have any tips on how to troubleshoot the fault?
    BTW, we have 2 of these ovens in the kitchen; the other one is fine.
    Thanks

    #484254
    electrofix
    Moderator

    sounds like it may be overheating

    have you checked if the cooling fan is running ? this is inside the top of the oven and not the one inside the oven

    Bosch part no 12004794. if its not dont assume is a faulty motor till you have checked

    Dave

    #484255
    micdev42
    Participant

    Thanks electrofix. I’ll see if the top fan is running…

    #484256
    micdev42
    Participant

    OK. This is what I do: select 4D (fan oven), default is 160 C, start. After a few minutes (3-5) it beeps the error. It has got nowhere near up to temperature (there is an indicator line on the display). The top fan did not run.
    To cancel the error I pressed the off button so the unit stops. After a few seconds it flashes up the message “unit cooling down” and the top fan briefly runs for about 5 seconds or so. After that the unit goes off.
    It therefore seems to me that the top fan is functional and something else is going on. Does this help?

    #484257
    electrofix
    Moderator

    is there any heat being created inside the oven

    Dave

    #484258
    micdev42
    Participant

    yes; it starts to heat up

    #484259
    electrofix
    Moderator

    this is an error code that seems ot mentioned a lot without any known solution

    it does seem to hinge around the cooling fan or inability of the board to sense it

    I would start by looking at the fan motor itself and first off is it open circuit

    Dave

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