Rachio 3 Not Responding in Homekit (Again)

[Stewart]

@Tzterri

What would be great is if it could be put back online using the Terminal application on my Mac.

This may be a good start:

SOLVED! How to fix Rachiio 3 WiFi not connecting first time

This is what I did that solved the WI-FI Rachio 3 controller not found issue for me, hopefully this helps you as well. I was able to get it registered, then success came rapidly after that, got my zones all entered, and now my sprinkler schedule is complete, and I used my phone to test all 4 zones of our sprinkler system with success. Here’s my steps taken: 1) Since my Rachio 3 controller could not connect to my home network, Let’s see if home network can find and connect to the Rachio 3 acce…

However, that post is based on the controller being in the ‘awaiting Wi-Fi’ state, i.e. broadcasting its Rachio-xxxxxx SSID. You stated that when the controller loses HomeKit connectivity, it is still connected to Wi-Fi and is otherwise functioning normally.

I don’t know whether when normally connected to Wi-Fi, it will accept the POST request and if so, whether that is sufficient to reestablish the HomeKit connection. Try it and see.