Make sure your water tanks are configured in your Drifter's settings correctly.
- Press and hold the Home and Backlight buttons for at least 5 seconds to enter setup mode.
- Press the Home button until the individual tank sensor parameter is displayed.
- Press the backlight button to change the tank sensor setting (1 is active, 0 is inactive).
If a tank sensor is enabled but no tank sensor is connected, the tank level will be shown as either full or empty, depending on whether the pump switch is on or off.
By disabling the sensor the tank level is always shown empty.
Tank sensors can also read incorrectly due to mineral and scale build-up. It is recommended to clean your tanks with a tank cleaning tablet.