Valve turns on at the end of program and off at the beginning of next scheduled

[elongo]

Also, the STOP ALL STATIONS option and RUN ONCE work sometimes well, but sometimes they don't work at all.
Quite tricked by this behaviour and very cautious about installing the device, as it seems that the valves can open at any time and don't close. Any clue about what is the issue, would be great.

PS. again, I have tried with two different OSPi board, two different, RPi's...