UART mode

Hello

I would like to ask, I have a coffee shop delonghi ECAM 26.455MB where the control board broke, I bought a new board according to the type number on the board. After running the cafe prints in Italian: Attendere prego .... (Please wait ..) and the machine does not continue. I also tried to run a test mode but it is possible that nothing will start.

After turning on the machine and pressing the On button, UART mode will start.

It is possible to do some reset and start the machine.

After replacing the board, the system will start filling but will not start.

If I turn the pump on 230V it works.

What are the conditions for starting the filling.

Thank you for the information.

I also checked the sensor of presences water containers and sensor of presence the coffee grounds containers, its ok.
I tested the pump and it's okay.
I don't know what to do next.
You have some idea.

Yes, It is.