Bosch Washing machine not running program after tripping RCD

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Viewing 9 posts - 1 through 9 (of 9 total)
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  • January 27, 2023 at 5:42 pm #101649
    steveb21
    Participant

    Bosch Classixx Vario Perfect – WAE28166GB

    The machine tripped the RCD whilst running a cycle. Since then it will not start any programs.

    When pressing start the buttons light turns solid (as it should) but the machine does nothing else. At this point it should start drawing water in.

    No flashing error lights/codes (this model does not have a digital display)
    Door switch has been swapped out – no change
    Water inlet has been disconnected and has good water flow

    Any one having guidance on which areas i should be checking next?
    Pressure switch?
    Inlet valve?
    Drain pump?

    Many thanks.
    Steve

    January 27, 2023 at 7:20 pm #485567
    electrofix
    Moderator

    think i would be removing the pcb and looking for damage

    Dave

    January 27, 2023 at 7:22 pm #485568
    steveb21
    Participant

    electrofix wrote:think i would be removing the pcb and looking for damage

    Dave

    Hi Dave
    Is this the PCB user interface board? Are you aware how many PCBs there are on this machine?
    Thanks

    January 27, 2023 at 7:37 pm #485569
    electrofix
    Moderator

    all board are at the top behind knobs

    am expecting a track to have blown for some reason as something shorted out

    Dave

    January 27, 2023 at 8:07 pm #485570
    steveb21
    Participant

    Just stripping it down, have a screw thats seized up. Will report back once i get to view the PCB.

    Thank you.

    January 27, 2023 at 9:05 pm #485571
    steveb21
    Participant

    You were right, something has blown as there is a clear visible burn mark on the white plastic (near the round dial area).
    Two PCBs.
    1. Large PCB where i can see a burn mark on the board
    2. User input PCB which controls the buttons on the front face

    Is it a simple case of replacing the board with a like for like?
    I took photos however the site will not let me upload as my upload limit is too low.

    January 27, 2023 at 10:39 pm #485572
    electrofix
    Moderator

    steveb21 wrote:

    Is it a simple case of replacing the board with a like for like?
    .

    wish it was that simple
    boards dont blow for no reason, another component in the machine has popped it. the chances are if you replace the board it will destroy that too

    to post pics , host pics on another site like google pics and post a public link

    Dave

    January 28, 2023 at 9:21 am #485573
    steveb21
    Participant

    https://photos.app.goo.gl/y2CH7UAqma3gdcDp6

    the area where the damage is appears to be coming from the 3 pin type connector with the grey wires. I will chase back to see which component it is connected to.

    January 28, 2023 at 11:55 am #485574
    electrofix
    Moderator

    well there is a blown triac as well

    Dave

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