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Hunter Controller “ERR” on All Stations – Pump/Master Valve Short

Hunter Controller Error: Short Circuit at Pump Start or Master Valve

New homeowner tries to start individual stations; all show “ERR” with an image of the error screen.

Diagnosis

“ERR” indicates a short circuit at the pump start or master valve circuit. If a pump exists, check wiring to the pump start box. If no pump, the master valve solenoid is likely shorted—replace it.

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