When one valve opens the last one won’t close.
I have a small (4 valve) system. When one valve opens the
last one won’t close.
I disconnected all the wires and took a 24vac transformer
and tested each valve. All the valves opened and closed properly. I assumed
that the problem laid in the timer so I installed a new one. (same issue)
The timer is set to open each valve for ten minutes with a
five minute gap between each. In other words valve one from 5am to 5:10am,
valve two from 5:15am to 5:25am, etc.
The valves are an old style Rainbird and the new timer is a
cheap Toro.
The five conductor lead from the timer to the valves is six
feet with no evidence of damage.