20
Buzzer beeps
continuously and
red LED is on.
Fault code 03
Battery is over-charged.
Return to repair center.
The battery voltage is too high.
Check if spec and quantity
of batteries are meet
requirements.
Fault code 01
Fan fault
Replace the fan.
Fault code 06/58
Output abnormal (Inverter
voltage below than 190Vac or
is higher than 260Vac)
1. Reduce the connected
load.
2. Return to repair center
Fault code
08/09/53/57
Internal components failed.
Return to repair center.
Fault code 51
Over current or surge.
Restart the unit, if the error
happens again, please
return to repair center.
Fault code 52
Bus voltage is too low.
Fault code 55
Output voltage is unbalanced.
Fault code 59
PV input voltage is beyond the
specification.
Reduce the number of PV
modules in series.
