Hotpoint-Ariston LST 328 A HA Dishwasher - Error 6 Issue, Pumping Water & Blinking Key

Hello
After switching on, everything seems fine - it is pumping water correctly into the system. After a while, you can hear a micro-switch switching several times. The dishwasher then turns off and begins to beep and then pops up error No. 6 plus the blinking key from turning on the machine. Does anyone have an alarm list or associate this error number?
I will be grateful for any help

In a different model
F06 - Drain pump error or F6
o No water in the network.
o The water drain hose is bent

The same could be read in the manual. There is nothing else but to disassemble the system and see what and how.
Question, do I understand that error 6 is the same indication as, for example, F06 in other models?

It's hard to feel, but I noticed if the number of error codes in Ariston hardware is less than 9, F1 to F9 are displayed.
And two digits display F01, F10 etc.

I will try to embrace the subject and of course write what was. Just try to get to know what is what hehe. Finally my 1 time with this equipment

At the moment, it turned out that no water is being drawn into the dishwasher (I misjudged at the beginning).
- I measured the voltage supplied to the solenoid valve coil located on the hose supplying the dishwasher with water.
At the time of theoretical water withdrawal - 230 volts - also correct
- I am not able to check the patency of the water supply cable due to the construction of the housing (photo attached)



I have the impression that it forms one whole and its "opening" will mean its destruction.

1. Is there a good diagnosis faulty solenoid valve , be power cable him?
2. Is it possible to buy and possibly replace the solenoid valve itself?
3. What if I put the water supply hose in the water for a short time, omitting all electronics.
Would the dishwasher work properly? I think not.

Thanks for any helpful info