Sungrow SG125HV-30, User Manual

Page: 78 / 105

8 Troubleshooting and Maintenance User Manual
68
Fault
code
Description Check method
220~227 PVx abnormal
1. Check if the x
th
PV string needs to be
connected.
If not, ignore the alarm; and
If so, check the connection status and
make sure it is connected reliably.
2. Check if the xth DC fuse is damaged. If
so, replace the fuse.
3.If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.
*The code 220 to code 227 are corresponding
to PV 5 to PV 12 respectively.
448~471
String x reverse
connection fault
1. Check whether the corresponding string is
of reverse polarity. If so, disconnect the DC
switch and adjust the polarity when the solar
radiation is low and the string current drops
below 0.5A.
2. If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.
*The code 448 to code 471 are corresponding
to string 1 to string 24 respectively.
532-547
String x reverse
connection alarm
1. Check whether the corresponding string is
of reverse polarity. If so, disconnect the DC
switch and adjust the polarity when the solar
radiation is low and the string current drops
below 0.5A.
2. If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.
*The code 532 to code 547 are corresponding
to string 1 to string 16 respectively.
548-563
String x output
current anomaly
1. Check whether the corresponding module
is sheltered. If so, remove the shelter and
ensure module cleanness.
2. Check the module for abnormal aging.
3. If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.
*The code 548 to code 563 are corresponding
to string 1 to string 16 respectively.