The vac measurement at the valve is false, this is proved when you place a load on the circuit.Older system say 18 yrs old or so. Commercial building.
HUnter ICC clock Hunter pgv valves.
Have voltage at the clock. have voltage at the valve Connect solenoid to fields wires , voltage drops to 0.
Anytime you place a load on a circuit and your potential disappears you either have an open or more likely so much resistance on the circuit the electrons can’t do their job.I tried swapping the common to another spare wire that ohmed fine.
This is a weird jobsite and one that Im a little skeptical to spend too much time on.
At my first visit here. Trying to get the rest of the system running I found some sabotage . Im assuming someone did that because they didn't get paid. Nothing destroyed but someone wanted someone wasting time here.
The master valve wire was cut at the master valve and disconnected from MV tap and screwed to unused zone tap.
Yes, I was thinking that. I havnt taken the clock out of the equation yet.Anytime you place a load on a circuit and your potential disappears you either have an open or more likely so much resistance on the circuit the electrons can’t do their job.
You know me Steve, I’d begin measuring resistance although there’s one thing you might try. Wire a solenoid directly to the common and a zone terminal and light it up. This could be a hinky transformer.