I just came outside and saw both zone 2 and zone 3 at the same time- obviously this didn't work very well water pressure wise. I think this happened yesterday too as I noticed the water pressure in the house was super low when the sprinklers were on. They are supposed to come on one after another and seem to work when I manually hit the button to start them. I unplugged the control box and they both went off so it's not physically stuck. I'm guessing that since unplugging it shut it off that this is a problem with the control box/timer versus a problem with the valve itself? The control box is at least 10 yrs old. Or am I on the wrong track? I just put down seed so need to get it working ASAP. Meanwhile I can manually turn it on and off rather than using the timer to automatically do it.
update: So, interesting. If I hit the button to manually advance from zone 2 to zone 3 and then zone 4, zone 2 does not turn off, it stays on and the next zone comes on. But if I hit the manual off button, it (and the other zone) turn of with no problem. So that it will turn off at all makes me think it is the controller, not the valve, but on the other hand, why would this only effect that valve, and not the others, if it is the controller?
update: So, interesting. If I hit the button to manually advance from zone 2 to zone 3 and then zone 4, zone 2 does not turn off, it stays on and the next zone comes on. But if I hit the manual off button, it (and the other zone) turn of with no problem. So that it will turn off at all makes me think it is the controller, not the valve, but on the other hand, why would this only effect that valve, and not the others, if it is the controller?