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

[elongo]

Hi Bob,
thanks for the insights!! However I am not using the Relay plugin, as I am using the Open Sprinkler pi (https://opensprinkler.com/product/opensprinkler-pi/), which, as I understand, has the relays built in. Anyway, I'll explore your comments. But indeed, it seems that there is some sort of inverted logic going on. BUT is not very consistent either, since is not always ON:OFF, OFF:ON, because sometimes when something should happen (i.e.: turn ON or OFF) nothings happens. For example STOP ALL STATIONS may not work sometimes, or RUN ONCE neither.
Thanks.
e