BOSCH WAE 24164

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  • March 16, 2012 at 10:04 pm #68486
    colly
    Participant

    Hi guys

    Been to look at this bosch machine today for fill error.

    Machine only fills on any wash cycle for ten seconds then just stops with leds on and does nothing more.

    I have changed one of the coils as only reading 8ohms.

    Machine will fill and work if you fill it up on rinses then turn to any wash with the water in machine will function correctly .

    Tried doing reset as in f21 in case this worked , but no.

    Any ideas other than board ?

    Cheers Colly . 😀

    March 17, 2012 at 9:23 am #371280
    Martin
    Participant

    Re: BOSCH WAE 24164

    colly wrote:Any ideas other than board ?

    What’s the heater insulation like?

    March 17, 2012 at 10:47 am #371281
    colly
    Participant

    Re: BOSCH WAE 24164

    Hi Martin

    I have put megger on comple machine, and have got a perfect reading.

    Machine is only 2.5yrs old and used by elderly couple .

    Colly

    March 18, 2012 at 9:33 am #371282
    Martin
    Participant

    Re: BOSCH WAE 24164

    But did you isolate the heater before meggering it?

    March 18, 2012 at 9:48 pm #371283
    colly
    Participant

    Re: BOSCH WAE 24164

    Hi martin

    No i did not do that .

    As i said i put megger on the whole machine from the plug pins .

    what you thinking ?

    Colly

    March 19, 2012 at 8:16 am #371284
    Martin
    Participant

    Re: BOSCH WAE 24164

    colly wrote:what you thinking ?

    Any potential earth leakage from (say) the motor or the heater would cause programme error such as this. Likewise if the heater were open circuit the same would apply so it’s important to megger these in isolation. 😉

    March 19, 2012 at 8:59 am #371285
    colly
    Participant

    Re: BOSCH WAE 24164

    Hi Martin

    I will try this then

    Cheers colly

    March 19, 2012 at 1:07 pm #371286
    leavemetogetonwithit
    Participant

    Re: BOSCH WAE 24164

    colly wrote:
    I have changed one of the coils as only reading 8ohms.


    That’s rather a strange reading.
    Wonder if it caused damage to the board?
    Mike.

    March 19, 2012 at 6:23 pm #371287
    keithwilliams
    Participant

    Re: BOSCH WAE 24164

    yes i would disconnect the heater and put the megger on it. the reason for this is that if it is wired so that both live and neutral are through relays then it will be out of circuit when meggering from plug.

    March 19, 2012 at 8:26 pm #371288
    colly
    Participant

    Re: BOSCH WAE 24164

    Hi guys

    Tried it and it’s fine

    As I say once machine is filled on rinse machine then turned dial turned to wash cycle machine will work perfectly including heating the water rinsing and final spin . Then repeat with your next load of washing .

    March 19, 2012 at 8:48 pm #371289
    leavemetogetonwithit
    Participant

    Re: BOSCH WAE 24164

    To me, it stands to reason that a triac “expecting” a 3K ohm load and suddenly finding itself presented with an 8 ohm load is going to fizzle and die if not actually exploding.
    Have you looked at the board?
    Mike.

    March 19, 2012 at 10:05 pm #371290
    colly
    Participant

    Re: BOSCH WAE 24164

    Hi Mike
    I have the removed board today

    It clearly is a fault like you describe .(triac I feel )

    However nothing to see on board blown etc .

    Metered the harness to pressure switch and valve .

    It needs a new board but customer is unwilling to have it replaced .

    Will end up with machine for spares so will put in by till I get a used board.

    Cheers for your help man .

    Colly

    March 20, 2012 at 5:34 pm #371291
    nomadPaul
    Participant

    Re: BOSCH WAE 24164

    it is possible to test the 2 valves individually in the test programme . As you seem to have worked out , I would say its the main wash valve that’s at fault (or its feed from the module ) In all honesty , in 6 odd years of working on these models , I’ve not known of a board failure with respect to the valves .

    The fill sequence starts with an approx 5 sec fill into the pre-rinse chamber (far right) from IIRC the top valve , a short pause then continuation of filling VIA the lower valve into the left hand side chamber . If you’ve got that initial burst but then nothing , then that suggests main wash valve failure . This would be backed up if the flashing leds were the top and bottom spin speed lights .

    I’d be tempted to try a new valve – 4283210 – just in case .

    March 20, 2012 at 9:13 pm #371292
    colly
    Participant

    Re: BOSCH WAE 24164

    Hi
    Changed the valve already, one coil was only reading 8ohms through it.

    But still has not corrected fault.

    I have never seen this fault either done this for 30 years.

    Have had the wiring harness off and tested it and it is fine too.

    Have changed the board across the valve also .

    Cheers

    colly

    March 20, 2012 at 10:36 pm #371293
    leavemetogetonwithit
    Participant

    Re: BOSCH WAE 24164

    nomadPaul wrote:In all honesty , in 6 odd years of working on these models , I’ve not known of a board failure with respect to the valves .


    How often have you seen a valve go practically short circuit?
    Mike.

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