I am still running my New Rachio 3 in simulation mode (no valve connected) so I can see what it predicts versus reality.
To be sure it was working, I decided to test the AC voltage on the Valve control terminal when in standby and when the controller activate the zone, an I am seeing something strange.
Even when no Zone is activated, the Voltmeter is reading 24V, when the Rachio activates the Zone, the reading goes up to 28V.
On my old controller, when a zone is not activated, the reading is zero…
To double check, I connected a small 24VAC LED across the common terminal and the Zone terminal, and when no zone is activated, the LED has a very faint illumination, and when I activate the Zone it lights up brightly.
It is like there is always some tension applied just with a faint current.
Is that Normal??