Master valve wont turn off


I have recently purchased a Rachio Gen 2 and am having an issue. Everything is wired up and seems to be working. I have a master valve set up at the tap to stop leaks throughout the system when not in use.

The issue is, when a zone turns on, it successfully turns the master and zone valve on and watering starts. However when the zone is scheduled to stop, the zone valve turns off ok, however the master valve does not turn off. It never turns off, and the system keeps leaking. The only way to turn off the master valve is to restart the entire Rachio unit.

What do I need to do to ensure the master valve also turns off when no zones are running?


What kind of master valve do you have? Plastic or brass? Hopefully it is inline. Have you checked the tuning on the valve? Tuning is done for shutdown purposes. The round handle or the X top on the flow control should not be all the way out.

Back it all the way out and then return it about 2 full turns on a Superior brass valve, 2 1/2 turns on a Rainbird brass and @3 turns on plastic inline valves.