Electrical Troubleshooting / "Crossed" Wires
Went out to a commercial site where station number 5 was not turning on.
I turned on station 5, manually from the timer, to find that station 3 was turning on. I moved on to turning on stations 3 and 4, and again, station 3 was turning on.
I connected a toner to station wire 5, at the valve, and found that the wire connected to wire terminal 5 was the loudest. Did the same for station 4, and again, the loudest wire was the wire connected to wire terminal 4. Proceeded to tone station wire 3 and found that I was getting loud tones from multiple wires.
Moved on to the mutimeter to see what I could find. Manually turned on station 3 and found (at the timer wire terminals):
Station 3: 26 volts
Station 4: 16 volts
Station 5: 16 volts
Station 8: 16 volts
Station 10: 16 volts
Station 11: 16 volts
Station 12: 16 volts
I removed station wire 5 from the terminal and touched one lead onto the terminal, nothing. Removed the lead from the terminal and touched the wire and found 16 volts coming FROM THE WIRE.
Moved on to manually turning on station 4 and I got 26 volts from terminal 4, yet again, 16 volts coming from stations 3, 5, 8, 10, 11, 12. I am getting the proper voltage for the station I manually turn on, but the rest are returning 16 volts.
I disconnected station wire 3 from the terminal and found that even though the wire was disconnected, when the other stations in question were manually turned on, here was station 3 turning on still.
In valve boxes for valves 3 and 5, I found a red wire that came up under the valve, into the box where it was coiled, and leaves the box without any kind of connection to the solenoids.
I also used a valve activator to test the solenoid and all stations in question turn on as they should when using the valve activator.
Ive heard this referred to as "crossed" wires, where a station wire is making contact with one or more other station wires and causes this type of problem.
Anyone have any thoughts or suggestions?
I tried searching the forum but no luck.