Does zone 1 shut down when 2 & 3 do? And are they wired up to an electric timer?

Hi, thanks for commenting! Yes, zone 1 shuts off when 2 and 3 do. The timer is an intermatic electric timer. the same issue happens whether its on auto or manual.

Okie dokie! This would be a timer issue or a cross wiring issue. Both issues can happen over time. To test which it is, you would need to pull wire for station one while one and two are running at the same time. If one shuts off, the issue is the timer. If it continues to run, it is getting its power from an underground circuit, or a cross wire.

I don't think it can have anything to do with wiring because the valve is a simple indexing valve so everytime the pump turns on, it switches zones. At least, this is what I think as this is not my area of expertise.

Check your Cam configuration, make sure it is set for 4 outlet configuration. I would contact the the manufacturer if you are not sure and have questions on what to do. aloha