If the system is trying to water but there is none left in the tank, you’ll hear a two-tone beeping while the pump is running. Low water is detected by the pump, using back pressure (current drain).
If your system is running in online mode then you can choose to receive an alert when the system detects that there is no water left : set this up on the notifications tab in the web app.
We recommend you turn off low water alerts for situations where the pump might be cutting out due to the pressure switch (such as when connected to a soak hose). Do this via the watering settings for the respective zone.
Preventing dry running
The pump will continue to run, even if the control unit is sensing "low water" by the current drain method. This is because you may have an air bubble in the system, or the pump is working to pull water from a tank which is a long way away.
The Pro pump can handle running dry for up to 10 minutes without damage, but the mini pump should not be run dry. Monitor your water tank carefully and respond to low water alerts from the system.
Calibrating the low water threshold
The low water alarm is triggered when the pump back pressure falls (it starts pumping air). Each system will have different pressures when the pump is pushing air and water. The default settings work for most setups, but sometimes it needs to be calibrated.
- Log on to your device control panel / dashboard
- Click the "Reset backpressure" button on the settings page
- Run the pump with no water for ten seconds or more ( connected to your irrigation ).
- Run the pump with water, again connected to your irrigation, for ten seconds or more.
The control unit will continue to adjust the calibration as it detects pressure changes in the system.