Rachio 3 thinks it’s watering but nothing is happening
Usually when this happens, there is an issue with wiring or water supply.
Is it happening to just one zone? If so, chances are it is an issue with the valve or solenoid.
Is it happening to all zones? Chances are it is an issue with the common wire, or a water supply issue, possibly main water supply to the irrigation system.
Is this with all zones or just one? Do you have a flow meter installed ?