Hi, there is no master valve but I did have tgat setting on in my phone, found it while troubleshooting and turned it off. I just have 1 common and 16 stations.
No rain sensor
The stations worked for 15-24 minutes each depending on the area it waters.
Yes if bleed screw is used the station waters. I think I will hook up to the old rainbird just to make sure they still turn on.
Why would I have 30vac on all Stations? Also not sure if this is of importance but I have 4 stations jumpered together and a relay at the valves because someone cut some wires and that was my sprinkler guy fix. So each time that station is turned on, the relay cycles to next station. That is only the case on 4 zones.