Huawei SUN2000-250KTL-H3 - Page 94

Table 9-1 Common alarms and troubleshooting measures
Alar
m ID
Alarm
Name
Alarm
Severity
Possible Cause Suggestion
2001 High
String
Voltage
Major The PV array is not properly
congured. Excessive PV
modules are connected in
series in the PV string, and
therefore the PV string
open-circuit voltage
exceeds the maximum
operating voltage of the
device.
● Cause ID = 1: PV1, PV2,
PV3, and PV4.
● Cause ID = 2: PV5, PV6,
PV7, PV8, and PV9.
● Cause ID = 3: PV10,
PV11, PV12, PV13, and
PV14.
● Cause ID = 4: PV15,
PV16, PV17, and PV18.
● Cause ID = 5: PV19,
PV20, PV21, PV22, and
PV23.
● Cause ID = 6: PV24,
PV25, PV26, PV27, and
PV28.
Cause ID = 13–18
Too many PV modules are
connected in series in
MPPT
n PV string, and the
open-circuit voltage
exceeds the limit at the
current altitude.
Cause ID = 1–6
Check the serial connection
conguration of the PV strings in the
array and ensure that the PV string
open-circuit voltage is not greater
than the maximum operating voltage
of the device. After the PV array
conguration is corrected, the alarm
will be automatically cleared.
Cause ID = 13–18
1. Check the number of PV modules
connected in series in MPPT
n PV
string by referring to the user
manual. Ensure that the open-circuit
voltage of the PV string is less than
or equal to the maximum operating
voltage allowed for the equipment at
the current altitude. After the PV
array
conguration is corrected, the
alarm will be automatically cleared.
2. Check whether the altitude is
correctly congured.
SUN2000-(250KTL, 280KTL, 300KTL, 330KTL) Series
User Manual 9 Alarm Reference
Issue 07 (2023-06-30) Copyright © Huawei Technologies Co., Ltd. 87