SUN2000-43KTL-IN-C1
User Manual
8 Maintenance
Issue 07 (2018-05-06)
Copyright © Huawei Technologies Co., Ltd.
83
Ala
rm
ID
Alarm
Name
Alarm
Severit
y
Possible Cause
Suggestion
106
–11
3
Abnorma
l String
1–8
Warning
Cause ID = 1
The PV string is shielded
from sunlight for a long
time.
The PV string deteriorates
or is damaged.
1.
Check whether the PV string current is
obviously lower than the currents of other
PV strings.
2.
If yes, check whether the PV string is
shielded from sunlight.
3.
If the PV string is clean and not shielded
from sunlight, check whether any PV
module is faulty.
120
–12
7
String
1–8
Reversed
Cause
ID = 1:
Major
Cause
ID = 2:
Warning
Cause ID = 1
The PV string is reversely
connected.
Cause ID = 2
Only a few PV modules are
connected in series to the
PV string, and therefore the
end voltage is lower than
that of other PV strings.
Cause ID = 1
Check whether the PV string is reversely
connected to the SUN2000. If yes, wait
until the solar irradiance declines at night
and the PV string current reduces to below
0.5 A. Then, turn off the two DC switches
and correct the PV string connection.
Cause ID = 2
Check whether the number of PV modules
connected in series to the SUN2000 is
small. If yes, increase the number.
