@john_harlan - Knowing that the system was NOT working before the Rachio was added is important. Let’s troubleshoot the sprinklers before worrying about the Rachio.
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Some sprinkler systems may have a second water meter just for irrigation, if so make sure the water is not turned off there.
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Most sprinkler systems will have anti-siphon, check valves or backflow preventers before the master valve or first valve in the system. There can also be a separate cutoff valve in the complex too. Check to see that those valves are not closed. If these devices are in the ground look for a larger rectangular valve box - probably with a green top.
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From the photo above there doesn’t appear to be a master valve in the system. A master valve is used to turn off the water pressure to the rest of the sprinkler system when it is not running to help prevent leaks. Double check that there isn’t a master valve in the installation - look for a round valve cover - probably green.
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The valves for the sprinkler system should have a bleed screw on them that will manually activate the valve. The valves will be in a round valve box. If a valve can be manually activated and water comes out of that zone, then we know that there is water pressure to the system and from a plumbing perspective things are working and we can start looking at electrical.
If water isn’t coming out of a zone when its valve is manually activated or if a valve can’t be located, it might be worth it to have an irrigation professional come out and check out the system. I believe Rachio can make some suggestions of folks they work with if you send them your zip code.
Good luck, let the board know the results and if we can provide more hints, tips, suggestions or thoughts.