bosch dishwasher not draining

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  • #99359
    suedehead1
    Participant

    SGV46M43GB/01. The pump was tight so I fitted a new one but it will not drain. There is no blockages . I tried removing the non return flap
    but still no drain. I tried it with door open and pushed up the polystyrene float the pump runs you can see the water being displaced but it
    will not drain any ideas welcomed

    #476002
    electrofix
    Moderator

    still got to be a blockage or air lock somewhere

    is the left side water way clear ?

    Dave

    #476003
    suedehead1
    Participant

    hi, yes it is cleara bit of black gunge at the top of the plastic, you can see water starting to go through it then it stops

    #476004
    oldsodchops
    Participant

    Could it be blocked between the water matrix and the drain hose connection?

    #476005
    electrofix
    Moderator

    If not already done I would remove outlet hose from both ends and blow down it. sounds like a fat blockage

    assume the pump cover is on properly

    Dave

    #476006
    suedehead1
    Participant

    Hi, pump cover on ok, blew down hose nothing blocking it at all

    #476007
    electrofix
    Moderator

    well onto long shots now as blockages was very high up the list. assume you tried putting hose ino a bucket intead of the drain

    assume the little hole in the pump cover is clear and you have already said pump cover is in place properly.


    have you checked voltage to the pump, yes am clutching at straws now

    Dave

    #476008
    Hollytree_Technical
    Participant

    Just a thought – does it need to a functioning non return valve? The pumps only bat the water out so maybe if the non return valve is not sealing off properly the water might be returning into the machine just as quick as it is batted out by the pump.

    P.S. If it makes you feel better I had a similar machine soon after I started in the trade with the same issue and I never did fix it, a new non return valve was my next guess on it but the customer scrapped it first.

    #476009
    electrofix
    Moderator

    Hollytree_Technical wrote:customer scrapped it first.

    really frustrating when that happens lol

    Dave

    #476010
    roy1
    Participant

    I had one this week not draining,I took the clear hose off the side tank it still would not drain into a bowl.
    I pushed a cable tie from the pump into the clear hose and that looked ok, but when I put water in the sump and tried again a lump of rice shot into the bowl.
    Just another thought is the replacement pump the correct part.

    #476011
    suedehead1
    Participant

    hi thanks everyone its a genuine pump I will need to go and give it another l think the problem must lie in the matrix on the side

    #476012
    roy1
    Participant

    There are two different pumps ,I fitted the wrong on once the pump runs but it will not drain.

    #476013
    suedehead1
    Participant

    ok i will check which pump i fitted

    #476014
    suedehead1
    Participant

    I refitted the non return valve flap and it appears to be working ok

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