Huawei SUN2000 Series User Manual page 94

SUN2000-(196KTL-H3, 200KTL-H3, 215KTL-H3)
Seires
User Manual
Alarm Alarm Name
ID
2012 String Current
Backfeed
Issue 03 (2021-09-30)
Alarm Cause
Severity
Warning Only a few PV modules
are connected in series in
the PV string. Therefore,
the end voltage is lower
than that of other PV
strings.
Cause ID 1–14: PV strings
1–14.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting Suggestions
1. Check whether the number
of PV modules connected
in series in the PV string is
less than that in other PV
strings connected in
parallel with this PV string.
If yes, wait until the PV
string current drops below
0.5 A, set all DC switches to
OFF, and adjust the
number of PV modules in
the PV string.
2. Check whether the open-
circuit voltage of the PV
string is normal.
3. Check whether the PV
string is shaded.
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