When I turned on my sprinklers, zone 1 works fine but when zone 2 turnes on - zones 1 and 2 water at the same time. Help Ok appreciate all the help. It is a Rainbird controller with 6 zones. If I manually open zone 1 it will work when I turn on the controller to test. When I test zone 2, both zones come on. Guessing there is a problem with the zone 1 valve since it only works when the valve is open. Zone 2 works with the valve closed. Am I correct? The main valve hums unusually loud now. Thanks ...
