Bosch Prewash

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  • #8906
    MikeP
    Participant

    My Bosch WFF2000 stops in rinse mode and leaves the prewash light flashing. It flashes in a series of 3s which apparently indicates a problem with the pump. I’ve removed the pump cover and cleaned inside. The propeller turned but with some slight resistance.
    Unfortunately the machine still refuses to complete a cycle and continues to flash the prewash light. It will drain if set to one of the 3 predefined rinses which suggests that the pump works. However in the cycle it appears to wash, drains and then stalls before the rinse begins. After a minute or two it moves to the prewash position.

    Appreciate any help.

    Many thanks.

    #131040
    Martin
    Participant

    Re: Bosch Prewash

    MikeP,

    Your trouble is indeed centred around the pump. It will require removal and closer inspection for coins in the pipework etc etc. If your machine is 4 years old plus, then likely the ‘magnet’ pump assembly will need replacing and also the entire drain hose system cleaned and checked.

    Well worth calling in an expert :tup:

    We may have one local to your area by clicking below: –

    Repairs@

    Martin

    #131041
    MikeP
    Participant

    Re: Bosch Prewash

    Thanks for your help Martin. What you suggest sounds expensive.

    The machine is probably 6+ years old. Perhaps a new machine might be a better cost-effective option?

    It’s possibly a coincidence but the washer did work fine until a plumber, investigating a leak turned it upside down, and later, while checking the machine’s behaviour, span the dials this way and that as if a clue to its problems might be found in a certain but unknown combination. I mention this wondering whether the problem could lie in the programmer. Hopefully a cheaper option!

    Thanks again for your help.

    #131042
    iadom
    Moderator

    Re: Bosch Prewash

    MikeP wrote:

    It’s possibly a coincidence but the washer did work fine until a plumber, investigating a leak turned it upside down, and later, while checking the machine’s behaviour, span the dials this way and that

    OMG

    I hope that this plumber is not a friend. 🙁 😯

    #131043
    Martin
    Participant

    Re: Bosch Prewash

    Mike,

    Seriously speaking a 6+ year old WFF2000 is still worth a look…Honest 🙂

    Pump replacement is not that costly and the Programmer??….NO! Even from what that idiot plumber did, it should still be OK :tup:

    Martin

    #131044
    MikeP
    Participant

    Thanks Martin. I’ll get someone to look at it. Unfortunately, following your earlier suggestion, my postcode didn’t throw up any forum people locally.

    Many thanks again.

    #131045
    gegsy
    Participant

    Re: Bosch Prewash

    Change the pump, job done.
    They semi-seize with age.

    Greg

    #131046
    MikeP
    Participant

    I understand the concept of semi-seizing with age Greg, but in terms of the pump, how easy would it be to fit a new one?

    I am the sort of person who puts on rubber-soled shoes to change a light bulb.

    #131047
    Martin
    Participant

    MikeP wrote:how easy would it be to fit a new one?

    Piece of cake for us experts. (The front panel has to be removed 😉 )

    Please refer to my first posting for further information…. 🙂

    Martin

    #131048
    BSH-MAN
    Participant

    Re: Bosch Prewash

    Grab the pump impellor firmly between fore finger and thumb. Waggle impellor from side to side. If any play is found, the pump bearing has failed and will cause intermittent pumping faults.
    A WFF2000 is a great machine and worth saving. 🙂

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