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I have a Bosch dishwasher (SMI5072), bought in 2005 second-hand but working OK. It has always been a little slow to get going, and I had initially thought the clockwork program dial was getting stuck. Then I concluded that it had something to do with the filling up process, and I thought it must be because the water was rather cold and paid no more attention to it. This has meant that it seemingly takes ages to get through a cycle. Yesterday I put it on, left it and got on with some work. An hour or so later it twigged that I hadn't heard much from it and I went to look. It had clearly got as far as the wash cycle because the soap stuff was now in the base of the machine, and the dishes looked oddly enough quite clean, but in fact had not been washed. I reran the cycle and stood by - it drained but there was no sound f incoming water. So we have taken it apart - well the sides off! It simply does not fill. If we throw in a few litres of water it will happily carry on. And it drains OK. The red switch on the left side of the chassis works because when I lift it using a chopstick (LOL) the clockwork dial progresses. The floaty mechanism that should move that switch also works (lifted gently using a souvlaki stick (!)). The water supply is fine (got soaked yesterday proving that) and the filter connecting the inlet box with the lightning symbol on it is clear. I have some pics if required. What do I check next and how? I have been unable to find a manual for this anywhere. Thanks Sue. (got multimeter).

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  • drzeus_gr Sep 16, 2010

    Thanks again. I kno a lot of people will think 'just get a new one already' but they cost an arm and a leg here and a tech will likely be 100 euros, and a waste of space if there are no parts to be had.
    I have no idea how old this is - can you tell me from the FD number?
    The float switch itself appears to be fine, just unable to work because it won't float up without water going in. We added water as best we could and gave it a spin - all fine. I tried taking out every drop of water and letting it 'sleep' in case something needd to reset ... no change. The only thing I did 'discover' today, after trying again, is that starting from program initiation, there is the sound of the pump draining the machine, then sort of swishy swashy sounds, then there is a click from the top panel, like the click of the red switch, and then nothing at all.
    At the risk of sounding thick ... where exactly is the water inlet valve?? We have traced back the hose from the water inlet pipe to the machine ... but where it connects is not easy to get at..
    Just so you can see exactly what is behind our toekick panel ... check out http://www.flickr.com/photos/drzeus_gr/
    Which bit am I supposed to be looking at as the inlet valve?

    Many thanks
    Sue

  • drzeus_gr Sep 16, 2010

    Thanks again. I kno a lot of people will think 'just get a new one already' but they cost an arm and a leg here and a tech will likely be 100 euros, and a waste of space if there are no parts to be had.
    I have no idea how old this is - can you tell me from the FD number?
    The float switch itself appears to be fine, just unable to work because it won't float up without water going in. We added water as best we could and gave it a spin - all fine. I tried taking out every drop of water and letting it 'sleep' in case something needd to reset ... no change. The only thing I did 'discover' today, after trying again, is that starting from program initiation, there is the sound of the pump draining the machine, then sort of swishy swashy sounds, then there is a click from the top panel, like the click of the red switch, and then nothing at all.
    At the risk of sounding thick ... where exactly is the water inlet valve?? We have traced back the hose from the water inlet pipe to the machine ... but where it connects is not easy to get at..
    Just so you can see exactly what is behind our toekick panel ... check out http://www.flickr.com/photos/drzeus_gr/
    Which bit am I supposed to be looking at as the inlet valve?

    Many thanks
    Sue

  • drzeus_gr Sep 16, 2010

    Thanks again. I kno a lot of people will think 'just get a new one already' but they cost an arm and a leg here and a tech will likely be 100 euros, and a waste of space if there are no parts to be had.
    I have no idea how old this is - can you tell me from the FD number?
    The float switch itself appears to be fine, just unable to work because it won't float up without water going in. We added water as best we could and gave it a spin - all fine. I tried taking out every drop of water and letting it 'sleep' in case something needd to reset ... no change. The only thing I did 'discover' today, after trying again, is that starting from program initiation, there is the sound of the pump draining the machine, then sort of swishy swashy sounds, then there is a click from the top panel, like the click of the red switch, and then nothing at all.
    At the risk of sounding thick ... where exactly is the water inlet valve?? We have traced back the hose from the water inlet pipe to the machine ... but where it connects is not easy to get at..
    Just so you can see exactly what is behind our toekick panel ... check out http://www.flickr.com/photos/drzeus_gr/
    Which bit am I supposed to be looking at as the inlet valve?

    Many thanks
    Sue

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  • Master
  • 1,430 Answers

There is a screen inside your water inlet valve that may be clogged. You will need to see if you are getting power to the water inlet valve when the machine calls for water. If you have power replace the water inlet valve ( not uncommon in older Bosch) If you do not have power you will need to check the float switch and or control. Here is a link that should help http://appliancehelponline.com/dishfloatwaterinletvideo.html

Posted on Sep 15, 2010

  • 2 more comments 
  • drzeus_gr Sep 15, 2010

    Thanks for replying so quickly. I had already seen the video but there is no float switch like that in the video in mine (the inside contains nothing but the rotor arms, salt container and filter base). I also have not yet been physically able to get to the other end of the water inlet.

  • marka19
    marka19 Sep 15, 2010

    The float switch is attached to the arm you were moving with the chopstick. The water inlet valve is behind the toekick. It has a couple screws that attach it to the frame. Remove the water supply line first.

  • drzeus_gr Sep 16, 2010

    Thanks again. I kno a lot of people will think 'just get a new one already' but they cost an arm and a leg here and a tech will likely be 100 euros, and a waste of space if there are no parts to be had.
    I have no idea how old this is - can you tell me from the FD number?
    The float switch itself appears to be fine, just unable to work because it won't float up without water going in. We added water as best we could and gave it a spin - all fine. I tried taking out every drop of water and letting it 'sleep' in case something needd to reset ... no change. The only thing I did 'discover' today, after trying again, is that starting from program initiation, there is the sound of the pump draining the machine, then sort of swishy swashy sounds, then there is a click from the top panel, like the click of the red switch, and then nothing at all.
    At the risk of sounding thick ... where exactly is the water inlet valve?? We have traced back the hose from the water inlet pipe to the machine ... but where it connects is not easy to get at..
    Just so you can see exactly what is behind our toekick panel ... check out http://www.flickr.com/photos/drzeus_gr/
    Which bit am I supposed to be looking at as the inlet valve?

    Many thanks
    Sue

  • svims Oct 01, 2010

    I have a Bosch SMU3632/08, with exactly the same problem! Based on your pictures the dishwashers are almost identical when it comes to construction and design. Have you found any solution toyour problem?

    Our dishwasher has worked without any problems as long as we've had it, but suddenly the water filling cycle changed. It used to be a clear, pretty loud flushing sound of water rapidly filling into the machine before starting the washing cycle. Now the water is flowing very slowlyinto the machine.

    I think have isolated the problem to the aqua stop magnestic inlet valve (the unit outside the dishwasher attached to the water supply). The filter entering the valve was not clogged. Any other experienced similar problem with the magnetic valve?

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