I have a Rachio 3 with 8 zones. I have total 5 sprinkler ones. The other zones work fine. But one zone will be automatically turned on. When I choose quickrun option to run say 3 mins for that zone. It will stop for 3 minutes and then be automatically turned on again. So the quckrun acts like a delay function now instead of starting the sprinkler zone.
I have changed the wire plug to different zone plugins at Rachio, and got the same problem for the specific wire zone.
Does anyone know what causes the problem? And how to fix this? Thanks!