Bosch Dishwasher not draining

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  • January 28, 2006 at 10:23 am #15201
    Twoten
    Participant

    This topic looked easy didn’t it 😆

    Sorry but the pump runs and drains, no blockages.
    Operate the anti-flood switch and it drains.

    Problem is when you start the program or cancel the pump doesn’t run.

    I can’t find any breaks in the loom or dry solder joints on the PCB.

    I haven’t come across this before, so by a process of elimination can only assume it’s the control unit.

    Has anyone come across this before?

    January 28, 2006 at 1:59 pm #162594
    Martin
    Participant

    Re: Bosch Dishwasher not draining

    Twoten wrote:Has anyone come across this before?

    More than likely…..errrr….what model are we talking about here?

    January 28, 2006 at 2:12 pm #162595
    Twoten
    Participant

    Re: Bosch Dishwasher not draining

    Oops!

    It’s a Bosch SGS5312GB/07

    Keith.

    January 28, 2006 at 5:12 pm #162596
    Penguin45
    Participant

    Re: Bosch Dishwasher not draining

    The invisible bit of glass in the drain part of the matrix……………………

    Chris.

    January 28, 2006 at 11:44 pm #162597
    Twoten
    Participant

    Re: Bosch Dishwasher not draining

    The invisible bit of glass in the drain part of the matrix….

    Unfortunatley not,

    Always works OK when the anti-flood switch is operated, never when it should via the control panel.

    January 29, 2006 at 12:12 am #162598
    Penguin45
    Participant

    Re: Bosch Dishwasher not draining

    Anti-flood switch supplies power direct to the pump, bypassing the electronics. Therefore…. Electronics.

    Chris.

    January 29, 2006 at 12:16 am #162599
    gegsy
    Participant

    Re: Bosch Dishwasher not draining

    Penguin45 wrote:Anti-flood switch supplies power direct to the pump, bypassing the electronics. Therefore…. Electronics.

    Chris.

    😉

    January 29, 2006 at 2:04 pm #162600
    Twoten
    Participant

    Re: Bosch Dishwasher not draining

    Anti-flood switch supplies power direct to the pump, bypassing the electronics. Therefore…. Electronics.

    That was the way I saw it but wanted to make sure I hadn’t missed something.

    Thanks.

    January 30, 2006 at 8:08 pm #162601
    Twoten
    Participant

    Re: Bosch Dishwasher not draining

    Fitted a new control module and voila the drain pump works.

    Call from customer about 2 hours later……. The machine isn’t heating, stuck on a wash since I have left and not hot.

    January 31, 2006 at 6:57 pm #162602
    Twoten
    Participant

    Re: Bosch Dishwasher not draining

    Update to this problem………

    Returned to customer, new PCB from BSH faulty!

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