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Toro TMC‑212 Zone 1 Not Working – Electrical Troubleshooting Steps

Zone 1 fails in auto and manual; other zones work.

Steps

Check station terminal voltage.
Check zone wire continuity (ohms).
Check solenoid resistance (most common failure).

Irrigation: Richdel 446PRi Zone 1 Runs Only 2 Min: Slide Switch Contact Failure; Utilitech 2 HP Irrigation Pump Hums but Won’t Run – Motor or Electrical Issue?; Rain Bird RC‑7BI Stops Advancing After Zone 1 – Advance Motor Failed; Hunter Pro-C: Zone Runs Manually But Not Automatically; Irritrol HR-6100: Program C (Zone 4) Not Working—Valve Diagnosis; Richdel 446PR Zone 2 Not Working—Solenoid Location and Replacement; Rain Bird Timer Won't Advance Zones: Timing Motor Failed; Troubleshooting a Single Zone Failure in a Five-Zone Sprinkler System; Why One Sprinkler Zone Stopped Working Overnight; Zone 1 Pressure Drops to Zero After Winterization

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