Fan is locked when inverter is on.
Beep 3 times every second
Beep once every 0.5 second
Beep twice every 3 seconds
Solar charger stops due to low
battery
Solar charger stops due to high PV
voltage
Solar charger stops due
to overload
Parallel input utility grid different
Parallel input phase error
Parallel output phase loss
Parallel forbidden without battery
Parallel inverters’ capacity different
Discharge over temperature
Battery under temperature