Other Faults - Sungrow SG1100UD System Manual

11 Troubleshooting

11.2 Other Faults

Fault Detail
The inverter shuts
down shortly after
startup
Upper computer com-
munication failure
WiFi connection unre-
sponsive/failed
86
Possible Cause
The DC input voltage is
just enough to start the
inverter. If the inverter is
connected to loads, and
the voltage cannot meet
the requirements, caus-
ing the inverter to shut
down.
There are many possible
reasons, please check
one by one according to
the description of "Cor-
rective Method".
Equipment is not
compatible.
Corrective Method
Design and connect the battery pan-
el series based on the recom-
mended open-circuit voltage,
increase the DC voltage input, and
avoid applying the critical voltage
value.
Check whether the local address,
baud rate, and other parameters on
the interface are consistent with
those on the host computer.
Check whether all wiring is good. If
RS485 communication is adopted,
check whether the A and B terminals
are connected reversely.
Replace the communication adapter
and try again if the communication
adapter does not match.
If the fault is not caused by the fore-
going reasons and still persists,
please contact SUNGROW as soon
as possible.
1. Refresh the Web page manually.
2. Restart or replace the mobile de-
vice and try connecting again.
3. Power off and restart the inverter
to connect again.
System Manual