Bosch dishwasher “tap” light flashing, dishwashers stopped heating water

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  • September 4, 2019 at 5:54 am #96345
    aresozo
    Participant

    Hi there,

    My dishwasher Bosch slimline:
    E-Nr SPV40C10GB/42
    FD: 9611

    After almost 3 years of constant use I started getting the flashing tap light. When running the ECO programme (50C) and checking now and then, the water used in the cycle was always cold so I imagine there is something wrong with the heating component or the temperature sensor. (am I right?). Also there is fat residue on whatever was covered in fat.

    Question 1: How to run the diagnostic programme in my dishwasher?

    Q2: I am an advanced DIYer/tinkerer, will I be able to replace the necessary parts myself? Any special tools required?

    Q3: How much would an engineeer charge for this? (Inner London).

    Many thanks for your help!

    Arek

    September 4, 2019 at 9:20 am #463092
    electrofix
    Moderator

    if you can use a multi meter the first thing to check is heater continuity

    part on your machine is this as its a complete motor heater unit

    https://shop.ukwhitegoods.co.uk/12019637-dishwasher-heat-pump

    you can see the heater terminals at the top. the large plug with 3 wire. one is an earth and you need continuity between the other 2

    Dave

    September 6, 2019 at 2:50 pm #463093
    aresozo
    Participant

    Hi Dave,

    Thanks for your quick reply and sorry for taking ages myself. I only today got around to removing the heater unit and yep, no continuity so I suppose its dead and I will be needing a new one.

    For anyone reading this later – this is a super easy job. All you have to do is:
    # get your dishwasher disconnected from water and power,
    # take the filter and all the bits that you should clean now and then out (the mesh and the filter)
    # aspirate all the water from the bottom with a turkey baster or a pasteur pipette (same thing)
    # unscrew the little metal side panel on the bottom right hand side as you are looking at your dishwasher.
    # take the panel off
    and the do what this guy is doing

    https://www.youtube.com/watch?v=BKAQmq9MPN8&t=299s

    All you need is a screwdriver and a turkey baster

    Thanks for your help,
    Arek

    September 6, 2019 at 4:11 pm #463094
    electrofix
    Moderator

    to test heater all you need to do is access it via the front and you can access the heater terminals without removing motor. Unless you want to that is

    Dave

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