My dishwasher does not take water after switching on. I know that it has an Aquastopper. But I dont know where is it to activate it. I have Siemens Lady 45 Dishwasher.
Probably the problem is to solve as easy as mine.
Did you ever consider that the error may be in front of the dishwasher? I didn't until I disassambled the washer and checked how it works. (As you also eventually tried to check the internet for a usermanual - you won't find maybe also none.)
This Lady's are build that easy, as every man would whish that all ladys work. ;)
You 've the round knob at the front of the dishwasher, this is some kind of "switching-clock".
This dishwasher (I don't know if model 45 is exactly the same, but it looks quite similar to mine) has no different washing programs, just ONE.
I always tried to "use" program "3", like the symbols suggested to me, that this would be for what I want to wash.
If you do so, the dishwasher starts in the middle of the washing-cycle and doesn't fill itself with water. It just wants to wash without water, as the water filling process starts in with the first step you can turn it to.
And what is also a bit "strange" for normal people, but maybe not for the real technical people. The "time-switching-device" rotates counter-clockwise. I thought it would do it clockwise, but never took the time to watch what it's doing. Mathematicaly speaking the clockwise direction is in technicians eyes the "wrong" direction, as it is mostly defined as the negative direction.
So, maybe you're the same "blind" than me. Maybe I'm just a bit stupid. ;)
Just ONE program, and counter-clockwise rotation of the "time-switching-device". Starting with the "1 program" fills the dishwasher with water, 2,3, and the following stuff don't do so (except the flushing symbol, but it doesn't wash, it just flushes the dishes.)
Long story short - mine works now like expected - without anything beeing broken.