Bosch SGS59A12GB/17 d/w

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  • May 17, 2008 at 12:41 am #36785
    Penguin45
    Participant

    Horrible sludging problems, giving the 1 minute fault. Thoroughly cleaned out (subject of illustrated article to follow 😀 ) – still getting 1 minute fault. Machine does heat and will complete the cycle with extended wash times.

    So…….. turbidity sensor – can’t get any reading though it at all with test meter – this can’t be right? Have ordered one just in case. Or possible module fault? Seems unlikely with it actually doing the programme, albeit slowly.

    Any advice gratefully received.

    Thanks,
    Chris.

    May 17, 2008 at 11:10 am #252329
    gegsy
    Participant

    Re: Bosch SGS59A12GB/17 d/w

    Hi Chris
    The voltage from the “receiver” photo diode will be quite small. It is quite possible that the meter may “pull” the voltage down due to its own circuitry 😕
    You should however on a diode setting of your meter (analogue meter better) be able to get a resistence reading one way on each of them as they are both diodes in theory (Photo and LED).

    Most probable causees of the slow cycle is
    1/ Crud attached to face of heater where sensors actually “look” at each other 😉
    2/ Crud restricting breather at the top of heat exchanger
    3/ Restriction in water metering unit and/or transfer tube causing poor flow through of water from matrix
    4/ Module lost the plot

    Worst one I had was a customer who was a mobile donut bloke, just dumping the mix tubs in the dishwasher. It set like concrete 😯 and conpletely wrecked the machine. 👿

    HTH

    Greg

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