Whirlpool WFE2B19 X nightmare

Dear Friends!

I have a really strange problem with my dishwasher. I get from my cuisin because have a failure and he bought a brand new.
This is a Whirlpool WFE 2B19X. Firstly when i try testing in any program the program start i see and hear the sewage pump is working for 10seconds and the main pump working for 10 seconds alternatly for 4-5minutes and get error Leds. The second line get 4 led from the 5 and 10x double beeps. No water inlet or anyone else only the pumps workings and the program not started with water. The water inlet solenoid is fine and the power is not going to the solenoid but i think not necessary because other failure have beafore solenoid need to open the water inlet. I clean everyting and try to start he program 20x. Firstly i try to fix the float/water level sensor, but suprisingli this modell not have. After many tries and checks i try to hot water in the filters and in the dishwasher maybe the turbidity sensor dirty and the machine is started to working. Im happy, but after 4 finished cycles i get the same 4led error but not from the start what earlier, at the finish because everything is clean at the dishwasher i think maybe at the finish get the fault codes/leds. After that i try to start again and the cycle started and finished perfectly but it hink will get again a led fault codes.Anyone know hundred percent sure the led error codes for this model? I try to find any led error tables but nothing. On the whirlpooluk pages i find codes for led, but on my machine not flashes, constantly blinking the leds. I found another one description and the 4led ON is turbidity sensor problem. Yes but the machine start without this sensor i try yesterday. I need a 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} sure fault led code table. Anyone have one?

Thank you and sorry for the long story. Cheers.
Here the 4led.

https://ibb.co/hcZWPt2