I have six zone sprinkling system that is fed through our small lake that we live on. The sprinkler system was installed with the previous owner. In the summer our lake has a large machine that cuts the weeds down in our lake.
One day when we replaced a head on one of the sprinklers, we tested that zone and three zones came on at one time. I called Toro and they advised me to unplug the system for a half hour and it should reset itself. I did that, the same thing happened. They