How the Generators HG-XXI operate: System Running
Your Water Tank  must be full, your electrolyte as specified.

After the Master Control receive the signal from the Maximun Water Level Sensor,  it will turn the Water Valve OFF, the Monitor ON,  the Solenoid On and this will turn ON the Hydrogen Cells and the Cooling Fan. Your System will be generating Hydrogen gas.

When the water reach the minimum water level the Sensor notify the Master Control and will triger the Flashing LED ON your monitor to let you now that you need to add water to your tank, however you still be producing Hydrogen because the Master Control will refill the Fluid Distributor and will turn off the Flashing LED. You still can keep driving for more than 200 miles.