Most connectivity issues you might see are normal behavior; the Rachio controller's Wi-Fi features hinge on the reliability of:
- your internet service provider (ISP)
- your in-home router and/or access point.
However, unless the device goes offline for an extended period of time, you won't experience any loss in functionality of the device. In situations of more lengthy disconnects, we send out an email notification that your device has been offline for 24 hours and needs to be power cycled (unplugged and plugged back in).
For details & tips, please refer to our support article: Basic Offline Troubleshooting.
On-Board Schedule Memory
If for some reason the Rachio doesn't reconnect to the Wi-Fi, the controller will continue to run the last schedule it saved until it can reconnect. The controller utilizes EEPROM (persistent memory), so the last saved schedule(s) are stored on the device itself.
So please rest assured - if your Rachio device loses connectivity with your Wi-Fi, it will always continue to water using the last saved schedule. Any updates/changes made to these watering schedules will automatically upload to the controller the next time it reconnects with the Rachio cloud (internet).
If you are running Flexible schedules, the Rachio controller will not run the last saved schedule, as they are dynamic. Instead, 24 hours after your Rachio goes offline, we will initiate our "backup flex schedule." If you had your flex schedule set to run every day (check conditions), we will default to every 3 days and run on the same start time that you set for this schedule. If you had specific days based on restrictions, we will continue to run on those allowed days as well as at the predetermined start time.
The controller does have a battery backup, but it's not used to maintain a schedule; instead, it's used to maintain an internal clock so that when the device comes back online, it can resume running your schedules correctly, before syncing with the Rachio cloud.
Should you lose power to your home, the system will not run because there is no way to power the solenoid valves without electricity (24VAC). When power is restored to your home, the Rachio controller will automatically reconnect to your Wi-Fi network.