Installed a 1" AI-driven shutoff with ultrasonic flow sensing on a 6‑unit this week, and it killed the main at 2 a.m… when the recirc pump spun up — dashboard says it’s still “learning.” For folks using Flo/Phyn or similar, what sensitivity/schedule settings are you landing on to keep the leak protection without nightly false alarms, and is there a model that handles recirc loops and ice makers better out of the box?
Had this on a 12‑unit with a Flo: I moved the ‘Plumbing Check’ to 11 a.m., set ‘Auto Shutoff: Medium,’ and added a spring check on the return so the pump’s startup gulp didn’t look like a burst — no more 2 a.m. kills. If you want app‑only, bump the continuous/extended‑flow threshold during the recirc window; Moen’s guide is handy: https://support.moen.com/Flo. Are your trips logging as Extended Flow or Pressure Loss?
I feel your pain with those false alarms! I had a similar issue and found adjusting the sensitivity to ‘Low’ during the peak usage hours helped prevent the nightly wake-up calls… It sounds like a tricky balance, but hopefully, something like that can work for you too, @todbake.
I get those annoying false alarms too. If you haven’t already, try adjusting the sensitivity during off-peak hours, like after midnight. I set mine to ‘Very Low’ overnight and it made a huge difference. Have you tried tweaking the timing on your recirc pump to see if it helps?