THIS STEP CANNOT BE UNDONE.
By performing a factory reset, you will delete all data from your controller, including zone settings, schedules, water usage, watering history, etc.
Primary reasons for a Factory Reset
1) Wi-Fi setup error
If you attempted to connect your controller to Wi-Fi via your phone's Wi-Fi settings (i.e. Add Wi-Fi accessory), a factory reset is required to clear the controller's memory before reattempting to connect via the Rachio app.
2) Changing Owners
If your Rachio controller is changing hands (selling, moving, transferring from installer account, etc.), perform a Factory Reset to clear all data and ensure a smooth transfer to the new owner. If you received or purchased a used controller, it will need to be deleted from the 1st owner's Rachio account before it can be added to your Rachio account.
Controller Offline? Get a new router?
You may just need to update your Wi-Fi Settings? Perform a Wi-Fi Reset
NoteIf you are trying to factory reset a Rachio Generation 1, please click here.
How To Factory Reset A Rachio 3 Controller
If you need help reconnecting to Wi-Fi after a factory reset, please click here.