Huawei SUN2000 Series User Manual page 98

SUN2000-(196KTL-H0, 200KTL-H2, 215KTL-H0)
Series
User Manual
●
Table 8-1 Common alarms and troubleshooting measures
Alarm Alarm Name
ID
2001 High String
Input Voltage
2011 String Reverse
Connection
Issue 07 (2021-07-08)
Warning: The inverter works properly. The output power decreases or some
authorization functions fail due to external factors.
Alarm Cause
Severity
Major The PV array is not
properly configured.
Excessive PV modules are
connected in series to a
PV string, and therefore
the PV string open-circuit
voltage exceeds the
maximum operating
voltage of the inverter.
● Cause ID 1: PV strings
1 and 2.
● Cause ID 2: PV strings
3 and 4.
● Cause ID 3: PV strings
5 and 6.
● Cause ID 4: PV strings
7 and 8.
● Cause ID 5: PV strings
9 and 10.
● Cause ID 6: PV strings
11 and 12.
● Cause ID 7: PV strings
13 and 14.
● Cause ID 8: PV strings
15 and 16.
● Cause ID 9: PV strings
17 and 18.
Major The PV string is reversely
connected.
Cause ID 1–18: PV strings
1–18
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting Suggestions
Reduce the number of PV
modules connected in series in
the PV string until the PV
string open-circuit voltage is
not greater than the maximum
operating voltage of the
inverter. After the PV array
configuration is corrected, the
alarm disappears.
Check whether the PV string is
reversely connected to the
inverter. If yes, wait until the
PV string current drops below
0.5 A. Then, set all DC switches
to OFF and correct the PV
string connection.
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