
13
The tank can be filled when the unit is on (even when pumping) or when the unit is
turned off. While the solenoid valve is on and the tank is filling, the display will flash
FIL.
To manually stop the tank filling press and hold the up and down buttons again. The
display will stop showing FIL.
Fill on demand is effectively a tank level control that keeps the tank topped up to
the level switch. The solenoid valve will be turned off if the unit detects a low battery
(below +10.5V).
+