User's Manual

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3. Communication between
the and devices like inverter
and combiner box is
abnormal.
3. Check that the can
normally communicate with
devices such as inverter and
combiner box.
Remote inverter
upgrading failed
1. The current inverter does
not support remote upgrading
function, or the upgrading file
is inconsistent with the actual
device type.
1. Ensure that the current
inverter supports the remote
upgrading function, and the
sgu file is consistent with the
actual device type.
2. The upgrading file is
abnormal.
2. The upgrading file is invalid,
for example, the file is
encrypted or the file is named
incorrectly.
3. The type of to-be-
upgraded inverter is
inconsistent with the
upgrading file.
3. Check whether the type of
the to-be-upgraded inverter is
inconsistent with the
upgrading file.
4. Communication connection
is abnormal.
4. Check whether the
communication cable is
correctly connected, and try
to upgrade the inverter again
if so.
If the fault persists, contact
SUNGROW.
Remote parameter
setting failed
1. Communication connection
is abnormal.
1. Log into the Web, and click
"Monitoring", to check
whether the communication
status icon is normal, like this
.
2. The current operation
mode of the inverter does not
support the parameter setting.
2. Identify the current
operation mode of the
inverter. For example, the
active power rising speed and
drop speed can be set only
when the speed control
switch of the inverter is
enabled.
12 Troubleshooting User Manual