In general, you'll by notified by the system via light and/or sound if something is not working or configured as it should. Check out this article for a full overview of system modes, signals and alerts.
In addition, the Abralife app will provide warning and information about the system status. You can also click on the "water leak" tile in the overview section of the app:
The app reports that everything is OK and that water is running freely
You can also perform a functional system test to ensure that everything is working as normal. This test must be performed minimum once pr. year to ensure a functional system