It seems that after a power outage, I can’t get the Rachio 3 controller to ‘turn off’ Zone 5. It runs continuously. I’m almost certain it’s the controller.
Here’s the detail: We had a power outage. After power came back on, the sprinkler system (Rachio 3) started to water automatically. We were away while this happened. I could not get the sprinkler system to shut off via the app, even by toggling the zones and disabling the controller. After returning home, I unplugged the controller to reset power. After reboot, Zone 5 still came on by itself. I could operate all other zones, but Zone 5 still stays on no matter what. I tried doing a reset, and that didn’t make a difference. I disconnected the wire from Zone 5 and plugged it in to an unused zone, and the sprinklers are now off, which suggests that it’s the controller.
This is the first season I’ve used this controller, which I loved up until this. Anyone else seen this issue? Any idea how to correct it?
Try moving one of the wires from zone 1, 2, 3 or 4 to zone 5 to see if the problem exists with one of those zones. If not then it could be a short in the zone 5 wire or problem with the solenoid or valve in zone 5.
Just to double check some things, I would suggesting using a multimeter testing the zone & common terminals for power when no zones should be running (zone wires disconnected). If it has power in this case, it would likely be a relay or equivalent within the controller.
I have seen this in many types of controllers(not my Rachio) but it’s fairly common with power surges or lightning. Can you run the station you moved from zone 5 to a spare station(b/c the solenoid may have taken a hit as well). If so, I would setup that as I my zone 5. Not sure how old your Rachio is but that sort of thing may not be covered under warranty.
Excellent thought @gaustin . . . trying an unused zone at least for now! I wish I would have thought of that. Was just thinking about how to diagnose it and did not think of how to fix it for the time being.