Siemens SF55M552 EU Dishwasher: Continuous Water Pouring, Float & Motor Issues, Aquastop

Hello colleagues,

I was spoiled by a dishwasher, a model like in the subject. As it is really well cared for and in the middle of the snakes there is no dirt / bloom I would like to resuscitate it.

Symptoms: pours water until the float under the water jacket does not rise up, activating the limit switch triggers the release pump and pours out the water. The float will drop, it will pour water again, the level will be borne - it will pour out. So in a circle ... I tried to hold the float in the bottom position, the dishwasher poured the right water level, closed the aquastop, and began to buzz. It seems to me that the sound came from a small motor in the water unit, which controls such a shield to open / close the flow of water through the heater (I do not know if I explained it well). The entire water unit was removed and cleaned by me, no moving elements put up resistance. I have only doubts about this engine, which had one contact slightly flooded on the 3-pin plug, but I cleaned the contact and there is no resistance.

I checked the pulser, which is influenced by water from the tap and is ok, and I read that it is the most popular fault element

Check the entire hydrostat that under the jacket on the right side is not dirty ... and the hose with hydro statu is a dishwasher so short, the same check whether it is dirty.
Check the solenoid valve under the water jacket located on the container on the right side, pull it out, or like to rust. Check also if the switches on the hydrostat are good.

Hydrostat (float) is clean, 2 m3 of water poured over the dishwasher over the night, I have not seen such a shiny dishwasher after 10 years of use. All cables also they are unobstructed, without any raid inside.
If I am not mistaken, the hydrostat under the water jacket serves only for emergency water drainage, as indicated by the stem that emerges from the next float of the dishwasher base, in the event of flooding it lifts the styrofoam tray up, activates the limit switch and activates the water pump. This mechanism works ok
I am more puzzled by something else - the dishwasher constantly pours water, holding the "overflow" float causes pouring of water until it is poured through the door. So the dishwasher does not know how much water there is, so it's probably because the main pump does not turn on. The only two sensors I found were the contactor in the salt tank, it probably does not matter and the second in the flow meter on the inflow hose. I stripped the other one and the contactor works ok, blowing into a flow meter causes pulses to be generated. I am most inclined to the theory that the dishwasher does not know how much water it has ...

In the pictures I put a float, which drains water as it is too much and pulls out the reed switch from the flow meter.

This is a dishwasher probably with a water flow sensor on the water hose. you must check this meter or replace it. For me in such a dishwasher the flowmeter was next to the salt container on the left side but on the hose and this was the cause and I see you probably in another place because I see the plug when connecting the hose with a jacket .. I would put on it.

The flow meter gave me no rest, the more that the "tap" did not light up. So some impulses, however, received ... I screwed almost to the limit of the dishwasher, pours slowly 5 minutes, but it started. So you need to replace the flowmeter, test it with a multimeter and break it down.

I see that this snake is sated:

 

It is dirt from the outside, dust poured with water. In the middle of any sediment, as I mentioned, all the hoses cleaned in the middle of the bottle washer + the dishwasher poured over 2 liters of liters overnight ...

Replace the exchange or you have already written something about it, reduce the water pressure and it will probably work

I slept with the situation of a working dishwasher with a slightly unscrewed tap and it looks like the problem was solved by accident. Some time ago I cleaned the filters in an aquastop, one gasket was decaying and it fell apart during extraction. I came to the conclusion that it is not needed, because on the thread 3/4 "will not be liquid Now I remembered about it, I put in a very similar In this way the water flow through the quastop is smaller (correct ???) and it looks like the flowmeter correctly counts the pulses because after a minute the main pump and dishwasher washes, but I will refrain from exchanging the flowmeter while it works, no I know, however, if it really is not damaged since a strong stream of water is not able to comprehend.

It is damaged and is for exchange because it does not count water. Under high pressure should work properly, But if the low for now works, leave it but as soon as and at this pressure will fail to replace it.