
09 Maintenance
User Manual V1.0-2023-10-30
74
No. Fault
Cause
Solutions
40
BUS Voltage
Imbalance
1.
Abnormal load
access
2. Hardware
problem
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.
41
Inv Software
Overcurrent
Short time sudden
changes in the
power grid or load
leading to control
overcurrent.
1. If the problem occurs occasionally, the
utility grid may be abnormal temporarily.
The inverter will recover automatically after
detecting that the utility grid is normal.
2. If it occurs frequently, please contact your
dealer or after-sales service center.
42
Back-up Output
Loss
1.
Abnormal inverter
sampling circuit
2. Hardware
problem
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
43
Back-up Output
AC Overvoltage
44
AC HCT Failure
The sampling of
the AC HCT is
abnormal.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
45
GFCI HCT Failure
The sampling of
the GFCI HCT is
abnormal.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
46
AFCI Self-test
Fault
AFCI detection is
abnormal.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
47
Flash Fault
The internal Flash
storage is abnormal.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
48
1.5V Ref abnormal
Reference circuit
fault
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
49
0.3V Ref abnormal
Reference circuit
fault