Super Dave
New Member
Hello, I need help... We bought a house where the irrigation system had been not used/ likely broken down for many years. This was obvious by the turf overgrown over pop-up sprinklers in several areas. I have 6 zones, and 4 of them do not open/work. I am an electrician... the Toro GreenKeeper control sends power to the valve solenoids when I run the system... The solenoids retract when they receive voltage, but valves don't open... No water to sprinklers. After watching many videos and reading online, I have dismantled, cleaned, inspected diaphragms and inside of valves. Even took a piece of wire and cleared the bypass holes near the solenoid while I had the bonnet/cover off. Even when I attempt to manually start a zone by unscrewing the solenoid, no water to the zone (Yes the water is on. The shut off is right there in the box). The only way I can convince the valves to open is... while the solenoid is activated I have to turn the flow rate screw (which pushes on the middle of the diaphragm) all the way in, and then back it out a few turns... Then and only then the zone will come on. HELP