Siemens dishwasher SF64T535EU/01 shows "tab" sign. It onlys starts if I activate the float switch

[Jesper]

Hi

I have this Siemens dishwasher (think it's basically the same inside as Bosch/Neff) which has following symptoms

When I start it it takes in water and fill-up the water tank. Then it makes some noises and stop after apx 8 mins (see video 08.06 where the tab sign is)

Then if I (as done in the video 08.16) release the blue handle on the pressure chamber so that water flows in and afterwards push the red stick so that some of the water will empty out it starts. Same as if I had filled water in the machine. It will run until it in the cycle will have to take in fresh water (my presumption). Then I can do the blue handle/red stick procedure again and it will start emptying the water tank and fill the machine. Most of the times it will run until the end but stop at 2 min left (display says 2 min). I can then open and close it and it will read 0.

I have had the drain pump out. It looks in apparently good order. I have also had the pressure chamber out and cleaned it. Looks also in apparently good order.

I have bought a new drain pump as this was my first thought but can anybody direct me in the right way..

Is it the drain pump, or could it be the float switch.. a sensor connected to the float switch? or perhaps something else - anyone who has experience with this kind of fault?

Any help would be much appreciated.

https://www.dropbox.com/s/nrw1sf1op80lv69/Video 22-01-2016 18.25.32.mov?dl=0

Best regards
Jesper

 

[Jesper]

Should anyone with the same problem came across this post I managed to found out what the problem was.. or at least what solved it .. I emptied as much as I could of the water tank (reservoir) on the left side .. Locked the 4 holes in the bottom and fillede 1.5 l of liquid agent to remove calcium - decalcify? (called Kalk væk" in danish) in the tank and waited until the day after.. assembled the water tank.. and immiately I could hear that it filled with water much faster than before and the pressure pressed the little white knob out and engaged the blue lever on the pressure chamber so the water could enter the machine..