Continuous Sensor Activated/Deactivated? - Accessories & Sensors / Rain Sensors - Rachio Community
post by though on Nov 6, 2018
Try a fresh set of batteries in the sensor and report back. Also, maybe the temperature is cold and throwing out false positives?
post by jsimek on Nov 6, 2018
There are no batteries. It’s hard wired and was replaced at the end of September.
post by though on Nov 6, 2018
Are you experiencing cold temperatures?
post by franz on Nov 6, 2018
@jsimek I’m having the team research your controller.
post by mattkwi on Jul 25, 2019
I just had a new irrigation system put in. All equipment brand new. Rained the first couple days after install, so it didn’t run. Today’s the first full sunny day and my Rachio app is constantly stating that Rain Sensor is activates/deactivated over and over. Easily over 100 notifications already. The sensor is new and it looks properly installed and clean. Connected to C and S1. Any thoughts before I deactivate this thing??
post by though on Jul 25, 2019
Did you purchase the R3? If so, you should consider just removing the rain sensor, honestly. As for the multiple notifications, you don’t mention which sensor you have, but it may need wired to S1 (or S2) and 24v-
post by mattkwi on Jul 25, 2019
It’s a Hunter Mini-Click and yes sorry, Rachio Gen 3. It’s been constant all day. Activated Deactivated Activated Deactivated Etc etc over and over
post by Gene on Jul 25, 2019
@though is right, your sensor should be connected to S1 and 24V-
post by mattkwi on Jul 25, 2019
Thanks I will try that. Should I power cycle it or power down when moving the wires? Right now it’s red to S1 and black to C. I should move the black, correct?
post by Gene on Jul 25, 2019
It is always a good idea to power things down, just to be on the safe side. That being said, the likelihood of something going wrong while moving the wires with the unit ON are minimal. You are correct, black wire needs to be moved from C terminal to 24v- terminal. Red wire can stay in place.
post by though on Jul 25, 2019
I don’t think wire colors matter so much but ya, what @Gene said. Let us know what happens.
post by mattkwi on Jul 25, 2019
Thanks for all the help guys. Haven’t been receiving the notifications since I made the swap.
post by MarcusDFW on Aug 27, 2019
I’m having this same issue and my Rachio3 and Rainbird WR2 were just installed yesterday… has there been a firmware update??
post by franz on Aug 27, 2019
Sounds like a wiring or issue with the rain sensor. Here is an article that might help with troubleshooting.
post by MarcusDFW on Aug 31, 2019
I just a had brand new Rachio 3 and Rainbird WR2 installed and I am getting the same exact notices you mentioned in this post… Rain sensor will activate as it should because it has started raining but then a few minutes later it will update showing rain sensor deactivated and then a few minutes later activated again and back and forth 2-3 times… did you ever resolve this on your system and if so what what was it?
post by MarcusDFW on Aug 31, 2019
it’s NOT the Rain Sensor because it’s brand new NOR is it wiring because it was just professionally installed correctly… too many threads all over the internet about this issue…
post by though on Sep 2, 2019
Sent reply with picture of wiring… let me know if you got it and it shows what you needed…
post by RSP on Jun 26, 2023
I recently switched from a RainBird system and kept my Rain Bird wireless rain sensor. It is wired correctly to the 24v and S1 connectors. I keep getting the Activated/Deactivated cycle within the same minute.
post by RSP on Jun 26, 2023
Well, I am happy to tell you that your wiring directions are incorrect. The Rain Bird WR-2 has to have the Black Wire to the + and the Red Wire to the -. I flipped positions on the wires after reading to try that on another site and am thrilled to tell you that was the issue. It is raining now and appears to be working properly. See attached images.