User`s manual

page 21
Light Status Chart
Power
Switch
Power
Light
Beeper Fan Fault
Light
Mode
Off Off Off Off Off Unit is off
On On
Off
On
Off Normal Operation
On On On On
Off Low input voltage, 10.2
to 9.7 volts
On On On On On
Low input voltage, less
than 9.7 volts
On On
Off
On On
High Input voltage,
greater than 15V
On On
Off
On On
Unit over temperature
or overloaded
On
Off Off Off Off No 12 VOLTS input to
inverter