Irritrol RD-600 Zone 4 Dead: Solenoid or Wiring Fault, Locate Valves with Wire Tracer

Zone 4 Shows OFF Immediately on Manual Start; Problem Follows Wire Swap

Junction box shown is just a manual valve with spliced wires. Automatic valves are elsewhere.

Use a wire/valve locator (rent ~$50/day or hire pro). Connect to controller wires, trace to valve locations.

Zone 4 solenoid shorted or wires crossed. Replace solenoid once valve found.

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