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Irrigation Pump Motor Cycles On/Off Every 2 Seconds

Pump motor cycles rapidly regardless of zone. New relay didn't fix it.

Controller Test

Check controller's pump start/MV terminal with multimeter: black on common, red on pump start. Run a station. Should read steady 23–26 VAC. If voltage fluctuates, controller is bad. If steady, reconnect relay and retest. Fluctuation with relay connected indicates relay or pump issue.

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