66
09 Maintenance
User Manual
V1.0-2023-10-30
No�
Fault
Cause
Solutions
24
Relay Check
abnormal
1. The relay is
abnormal or
short-circuited.
2. The control circuit
is abnormal.
3.
The AC cable
connection is
abnormal, like a
virtual connection
or short circuit.
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.
26
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.
27
DC Arc Fault
1. The DC terminal
is not firmly
connected.
2. The DC cable is
broken.
Read the Quick Installation Guide and check
whether the cables are connected properly.
28
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.
29
Cavity
Overtemperature
1. The inverter is
installed in a
place with poor
ventilation.
2. The ambient
temperature
exceeds 60
℃
.
3.
A fault occurs in
the internal fan of
the inverter.
1. Check the ventilation and the ambient
temperature at the installation point.
2. If the ventilation is poor or the ambient
temperature is too high, improve the
ventilation and heat dissipation.
3. Contact the dealer or after-sales service
if both the ventilation and the ambient
temperature are normal.
30
BUS Overvoltage
1. The PV voltage is
too high.
2. The sampling
of the inverter
BUS voltage 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.
