1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Miele G640 dishwasher problem - inlet/outlet flashing

Discussion in 'Appliances' started by JimSti, 25 Aug 2013.

  1. JimSti

    JimSti

    Joined:
    24 Aug 2013
    Messages:
    2
    Thanks Received:
    0
    Location:
    Surrey
    Country:
    United Kingdom
    I have done everything advised in the manual re cleaning the filter and the area around the non-return valve and drain pump. The machine is about 10 years old, and used every day.

    If I use the pre-wash cycle, it drains, fills to the correct level (>4mm above the coarse filter) the circulation pump starts working and washing for about 10 seconds and then it stops, with the red light flashing, and water at the bottom .

    I have taken off the bottom panel and there are no leaks. I have also checked the inlet and outlet hose for obstructions and there are none.

    I have removed the circulation pump and checked for whether it might be seized or stuck. It rotates, though quite stiffly. I found a post on another forum that recommended spraying WD40 on it at various points where there are moving parts, so I have done that, though it didn't seem to rotate that much more easily after doing so.

    I also had a look at the heater level switch and saw that it seemed to be a bit scaled up inside with light brown deposit (we are in a hard water area), so I put a bit of descaler in it and then after leaving it for a bit rinsed it out.

    I though I had fixed it because I was then able to run a prewash programme and then a normal programme without dishes in, but the first time I have run it with dishes the problem has come back again.

    Can anyone suggest what the problem might be? Any help would be very much appreciated.
     
  2. Sponsored Links
  3. francis2

    francis2

    Joined:
    19 Aug 2013
    Messages:
    4
    Thanks Received:
    0
    Location:
    Yorkshire
    Country:
    United Kingdom
    check the pressure switch is actually switching, it could be theres not enough pressure building all the time the pumps running to keep it closed have you actually had the pump to bits to check the impellor for fluff/debris/ hard fat etc Id be surprised if there wasnt some muck in there after 10 years as thatll reduce the pumps efficiency easy to dismantle just be careful with the shaft seal

    you can actually back the tension off on the nylon crosshead screw in the centre of the back of the switch that way if the pumps a bit worn the cycle will still run
     
  4. JimSti

    JimSti

    Joined:
    24 Aug 2013
    Messages:
    2
    Thanks Received:
    0
    Location:
    Surrey
    Country:
    United Kingdom
    Thanks very much.

    It turned out to be the heater level switch causing the problem. I replaced it and all is now working fine again.
     
  5. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page