... , DC under- voltage displayWhen the Fault LED and the “LOW” LED lit up, it means the DC input is low 22VDC.7, Power adjust display1 ... .3,The current direction can adjust from the maximum to the minimum.4,In automaticadjustment process, we will see the LOW light flashing.And the power ... will keep as a starting point, from 0 to the maximum output power, ...