09 Maintenance
User Manual V1.0-2023-10-30
66
No. Fault
Cause
Solutions
1
PV power low
Weak or abnormal
changes in lighting
1. If it occurs accidentally, it may be due to
abnormal lighting, and the inverter will
automatically resume normal operation
without manual intervention.
2. Check if the battery is connected or working
abnormally.
3. If it occurs frequently, please contact your
dealer or after-sales service center.
2
PV voltage Low
3
BUS voltage Low
4
PV Input
Overvoltage
The PV array
configuration is not
correct. Too many
PV panels are
connected in series
in the PV string.
Check the serial connection of the PV array.
Make sure that the open circuit voltage of the PV
string is not higher than the maximum operating
voltage of the inverter.
5
BUS Soft Start
Failure
Weak or abnormal
changes in lighting
1. If it occurs accidentally, it may be due to
abnormal lighting, and the inverter will
automatically resume normal operation
without manual intervention.
2. If it occurs frequently, please contact your
dealer or after-sales service center.
6
BAT Abnormal
Connect
BAT Abnormal
Connect
For battery ready models, please purchase the
battery function before connecting the
battery. For more information, please contact
your dealer or after-sales service center.
7
BAT1 Overvoltage
The battery
connection voltage
exceeds the
rated range of the
equipment.
Confirm if the battery voltage is within the rated
range of the equipment.
8
Back-up Output
Overload
Excessive power of
connected load
1.
Confirm whether the connected load power is
within the rated range of the equipment.
2.
Confirm if there is insufficient light or battery
power.
3. If it occurs frequently, please contact your
dealer or after-sales service center.
Single inverter system