All Zones Come On Simultaneously – Stuck Solenoids or Valve Debris

Five‑zone system with master valve; all zones on at once, just weeping. Disconnecting station wires doesn’t help.

Replace solenoid on one valve; test if it stays closed when other zones run.
If it stays closed, replace all solenoids.
If not, open valves and clean debris (sand, stones, etc.). Check diaphragms for cracks.

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