Bosch dishwasher SMS50C12UK/C2 — Random cutting out

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  • August 31, 2021 at 8:08 pm #99989
    asp11
    Participant

    Cx reported fault was E14

    Removed side panels to check for leaks, bad connections and water flow…. tested all ok but found drain hose too far down standpipe, so re-positioned it

    Then cx tested it but a different error happened….. On a 29min cycle the “check water” light came on after a minute but continued the cycle it emptied at 14mins then went up ti 18mins and carried on washing until 1min then it flashed E14

    On my return today it was fine until 17min then it just stopped with water in the cabinet and half the pressure tank full with 0.00 displayed and the “check water” light on (no leaks)……. pressed RESET it drained fine……. tried a 2nd test – it went to 15min, it did pump the water out this time but stopped while washing and again with the pressure tank half full (both times the machine was silent) and it emptied fine when RESET

    I’m really confused, assumimg the pcb is doing weird things but wanted another opinion please?

    August 31, 2021 at 10:04 pm #478820
    electrofix
    Moderator

    did you check the overflow switch and float in case its warped and operating through vibration

    Dave

    September 1, 2021 at 7:29 am #478821
    asp11
    Participant

    Hiya Dave – the float system is fine and this model has the full air break with the built-in impeller jug & small pcb, the wires on that are fine and the wheel goes around perfectly ??

    September 1, 2021 at 8:24 am #478822
    electrofix
    Moderator

    well it does sound odd
    E14 is flood protection according to owners manual, if this triggered i would expect pump to run and run

    does sound a bit like a software glitch on the board

    Dave

    September 2, 2021 at 7:53 am #478823
    grooster
    Participant

    I always thought E14 was the read switch on these BSH machines

    September 2, 2021 at 8:43 am #478824
    electrofix
    Moderator

    you can never assume they keep the same numbers but i suppose you could read it that way if thats what they mean by water protection system

    Dave

    September 5, 2021 at 10:12 am #478825
    asp11
    Participant

    Thanks for your input guys, I’m positive that the float area and the air break system is working properly.
    I’m definitely thinking it’s an error within the board, will have a chat to the customer. …….. Thanks

    September 6, 2021 at 5:56 am #478826
    kaibart
    Moderator

    Might be worth just checking the drain valve I’ve changed a few of them 1st

    September 6, 2021 at 8:46 am #478827
    electrofix
    Moderator

    kaibart wrote:Might be worth just checking the drain valve I’ve changed a few of them 1st

    what do you mean by drain valve

    all i can think of is the non return valve in the pump and the anti syphon valve which in this case would be in the heat exchanger

    Dave

    September 7, 2021 at 8:03 pm #478828
    kaibart
    Moderator

    This is what I mean dave

    September 7, 2021 at 9:19 pm #478829
    electrofix
    Moderator

    kaibart wrote:This is what I mean dave

    Ah never had it called a drain valve but that normally gives an E19 fault doesn’t it ?

    Dave

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