Good morning.
I just replaced my Rainbird SST 600i with a Rachio 3 (serial AC2148255, firmware hk-5-645, and everything seems fine, except none of my zones will turn off with the Rachio 3. Solenoids are Irritrol 811 24VAC.
Everything worked fine with the Rainbird controller. All zones would turn on and off properly, whether initiated manually, or by schedule. The Rachio turns all zones on just fine, whether via Quick run or Schedule, but doesn’t turn them off. They appear off in the app and on the controller, but the water continues to run until unplug the Rachio’s power. I’ve double checked all of the wiring to ensure common, master, and zone wires are all on the right terminals.
I’ve attached pics of the old and new hookup for reference.
I’m not sure if my controller has a defect, or perhaps I’m doing something wrong. I’ve also reached out to Rachio support, but thought I’d check here as well. Thanks!
From what I can tell, the wiring looks good. If it is running after the zone is off and you disconnect the white common wire, does the water shut off?
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Yes, the water shuts off if I disconnect the white common wire.
Do you happen to have a multimeter to measure voltage between the zone’s hot wire and common before, during, and after? Does it do the same thing for all zones? I wonder if something is up with the valve or controller.
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I sure do. Great idea! I’ll take measurements of each tomorrow. Thanks!
I’m reasonably certain it’s the controller. I have an irrigation well with a pump switch relay (connected to the master terminal). When a zone starts, I hear the pump relay turn on, and the appropriate zone starts watering. Neither the pump relay nor zone solenoid shut off when the cycle is supposed to be done however.
This isn’t specific to one zone: it happens regardless of which one is selected. I haven’t had a chance to measure voltage on the terminals, but I’m pretty confident I’m going to find that it’s not killing power/signal to the solenoids or PSR at the end of a cycle.
Sounds like a good possibility. How old is the controller? Is it within warranty? If so, maybe contact support?
Yeah, I’m just going to return it. Thanks for all the suggestions!
