Operation3–14 975-0012-01-02 Rev AWhenever the battery voltage drops to its lowest (safe) level (as calculated by theODP), the LED lights green to indicate the condition. If the condition persists, theinverter will shut down until the battery voltage returns to a safe level and thenrestart.Charger LED - Orange / GreenThe Charger LED is a dual color (red/green), triple function indicator.• When the charger is in Bulk mode, the LED lights orange.• When the charger is in Absorption mode, the LED blinks orange.• When the charger is in Float mode, the LED lights green.Audible Indicator (internal)A buzzer is located on the control board as an audible alert to fault conditions suchas Battery High/Battery Low, or Overload. Steady buzzing indicates an impendinginverter shut down. A pulsing chirp indicates the inverter is temporarily off-linedue to a fault condition (either within the inverter or related to the system).Important: In renewable energy applications (solar, wind, hydro, etc.) the DC chargecontrollers must be set to a level below the inverter’s maximum input voltage or theinverter shuts OFF.Important: The inverter automatically restarts when the following error conditions aredetected: LOW/HIGH BATTERY, OVER TEMPERATURE, or a quick durationSHORTED OUTPUT or OVER-CURRENT. The inverter shuts OFF and requires aMANUAL restart if the following conditions are detected: a prolonged overload condition(approximately 10 seconds) or the inverter’s output is connected directly to an AC powersource (utility grid or generator).Important: Orange is a flickering mix of red and green. It can look different dependingon the angle at which the LED is viewed. It should never be a solid red.Important: The battery charger control circuit operates from the battery voltage. If thebattery voltage falls below 7 volts, the inverter/charger will not operate. The batteriesmust first be recharged using a stand-alone charger to bring the voltage up to a level wherethe inverter/charger can operate.