New Rachio 3 has been working fine 3 weeks. Phone app showed it offline. Have followed the “reconnect wifi” procedure several times. Still wont connect. Controller flashes yellow in position 2. Position 1 has a solid blue light. All other devices on same SSID working fine. Help
@csmythe - try to unplug your router and plug 
it back in and see what what happen and if that doesn’t work press and hold the Wifi button on the unit and follow the steps on the Rachio app hope this help
Tried all that and still wont connect to WIFI. Replacement unit arriving from Amazon today. Unit died after 3 weeks use. 