Hi! This is only my 1st week with the Rachio 3, so please forgive any newbie mistakes/ignorance. I’m seeing some weirdness with my precip levels and how it interacts with soil moisture. Current situation:
- It rained heavily last night (~12 hours ago). My PWS is accurately reporting 1.1". WI+ reports .89". Close enough.
- I have 3 zones (1 front yard, 2 back yard, each zone 750sq".) Most advanced settings are similar. Front yard is 1 year older, so its roots are slightly deeper (5" compared to 4" in back yard), nozzle inches/hour also vary from .4 to .6. Zone 3 gets more shade.
- When I set the controller to use my PWS (reading 1.1" precip), the zones show the following soil moistures: 19%, 9%, and 34%, respectively. When I dig down into the soil moisture menu, zone 1 is only showing .01" precip, while zones 2 & 3 correctly show 1.1".
- When I set the controller to use WI+ (reading .89"), my zones show soil moisture of 31%, 24%, 49%. Precip still shows .01" for zone 1, but zone 2 & 3 correctly show .89".
These last 2 points are the kicker. Why would a reading of more rain equate to lower soil moisture? And wouldn’t 1.1" of rain fill everything up to closer to 100%? Also, zone 1 incorrectly reads .01" of precip no matter what, yet the soil moisture % changes?
What am I missing? Thanks!
Additional Edit: Sandy soil, warm weather zoysia, South Carolina.