Strange fault on Indesit washing machine – stumped!

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  • #7287
    andy_art_trigg
    Participant

    No Fill, empty or motor action. Totally dead but neon light works and I can hear the interlock click. Also, the neon stops flashing (slowly) when the door interlock – locks.

    I Plugged in the auto test dongle in the back and pressed the auto test button. !”Auto Test” scrolled across it’s display but nothing happened. After a minute it beeped and the display went dead.

    I replaced the PCB and EEprom and the fault remained the same. Auto Test still refused to work although the timer selector started continuously clicking round.

    (I didn’t have a timer selector switch to try)

    I put the old PCB back on and plugged me dongle back in. F2 error code showed up.

    I had already checked continuity on the motor, but F2 was listed as “motor seized or tacho open circuit) The motor isn’t seized and I got a reading on the tacho coil (125 Ohms I think – or thereabouts) I duplicated this reading from the connector on the PCB which leads to the motor.

    Subsequent fiddlings revealed no further error codes and autotest just scrolls auto test but does nothing.

    I know an open circuit motor can cause these symptoms but the armature, field and tacho all check out –

    #122479
    Dave_Conway
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    One of the ribbon cables maybe Andy ?

    Dave.

    #122480
    machineman
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    have you checked the carbons andy, had one of these last year just as you described brushes just touching.m

    #122481
    eastlmark
    Moderator

    Re: Strange fault on Indesit washing machine – stumped!

    I would agree, I am sure many of us have had good meter readings across an armature and yet no real contact other than carbon dust. Always worth taking brushes out to be certain.

    #122482
    AMS
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    What is this autotest dongle of which thou speakest?

    By the way, have you checkd for broken wires at the heater element?

    Dave

    #122483
    andy_art_trigg
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    The dongle thing is supplied by Hotpoint (at expense) it fits in the back of most modern Hotpoint and Indesit machines (there’s a plastic cover to remove on the left rear side of the machine)

    I didn’t check brushes as I got a good reading but I will return with a motor. The heater connections looked ok, although I’m not sure a heater connection fault would cause total deadness. My understanding is it would cause the timer selector knob to click round (after it had filled?)

    #122484
    Martin
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    A very nice chap by the name of simonb loaned me one of these a few months back, see : –

    http://www.ukwhitegoods.co.uk/modules.p … pic&t=1302

    …and I must say I concluded it is only marginally better than no device at all but as much use as a chocolate teapot is for brewing a cuppa 😆

    Martin

    #122485
    AMS
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    Andy,

    I know it sounds daft and flies in the face of years of experience of fixing washing machines, but I have had several instances of a broken wire at the element giving the initial symptoms that you describe. The first time I went to one of these lovely machines a few years back, I was confronted with the same thing i.e door locks but nothing else. After checking the usual suspects I concluded that it needed a new board. So I ordered one and a new eeprom and duly went back, fitted it and exactly the same. At this point the customer decided that he’d had enough and would scrap it and was more than grateful for me to take it away. This gave me a chance to have a good play with it and eventually was more than staggered and not a little embarrassed to discover that it was nothing more than a broken black(I think) wire at the element. 😳 In my defence, the wire looked intact but the conductor was actually broken inside the crimp. Since then I have come across it a few more times, especially with the early machines. Not enough slack in the cable maybe. I’m not saying that this is your problem but it’s always worth a wiggle of the wires!
    Good luck

    Dave

    #122486
    andy_art_trigg
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    Cheers Dave. I did check them, but not that close 🙂 I will bear that in mind.

    #122487
    simonb
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    i’ll have a guess because thats all these are worth?

    1.brushes low

    2.wiring between motor module if ones off or loose it will play up the same as if brushes low ie. no fault code

    3. board defective, or eprom same if replace for new suspect this, we used to order up 2 boards and 2 eproms when worked for merloni

    4. insulation test on motor? just a thought?

    5. if none of the above swiftly take a large lump hammer out of tool box and a good few swift strikes, i always warn the machine of this prior to any inspection or repair

    simon

    #122488
    clyde
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    Is the comet issue nylon hammer no good for working on these?

    Clyde
    😆

    #122489
    philfish
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    sledge hammer is best or even push it of a cliff failing these options a nylon comet hammer will just have to do but make sure you really go to town on it!! the customer will appreciate this in the long run just think of all the time and hassle they will save in the future?

    #122490
    andy_art_trigg
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    AMS wrote:Andy,

    I know it sounds daft and flies in the face of years of experience of fixing washing machines, but I have had several instances of a broken wire at the element giving the initial symptoms that you describe…..

    Dave

    It *was* a broken wire at the heater. It looked fine – but the wire inside the insulation was broken.

    #122491
    simonb
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    well found!

    did it look dodgy or did you check all wires with meter.

    strange i’v had a few dodgy wires to heater burnt and what not, but normally board throws up fault code on this one??

    simon

    #122492
    andy_art_trigg
    Participant

    Re: Strange fault on Indesit washing machine – stumped!

    simonb wrote:well found!

    did it look dodgy or did you check all wires with meter.

    strange i’v had a few dodgy wires to heater burnt and what not, but normally board throws up fault code on this one??

    simon

    Sorry I missed replying to this. It was while pulling the wires off the heater to test the heater’s continuity. The insulation on the wire close to the crimp stretched and broke leaving the connector connected to the heater.

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