Huawei SUN2000-250KTL Series User Manual page 83

SUN2000-(250KTL, 280KTL, 300KTL, 330KTL) Series
User Manual
Table 8-2 Common alarms and troubleshooting measures
Alar Alarm
m ID Name
2001 High
String
Voltage
2010 Abnorm
al DC
Input
Issue 02 (2022-12-20)
Alarm Possible Cause
Severity
Major The PV array is not properly
configured. 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.
Major Cause ID = 1
Strings PV1 to PV9 are not
connected.
Cause ID = 2
The DC SWITCH is OFF.
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Suggestion
Check the serial connection
configuration 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
configuration is corrected, the alarm
will be automatically cleared.
Cause ID = 1
At least one PV string from PV1 to
PV9 is connected.
Cause ID = 2
1. Turn on the ONE-OFF SWITCH
manually.
2. Turn on all DC SWITCH manually.
3. Turn off the ONE-OFF SWITCH
manually.
4. If the fault persists, contact your
dealer or technical support.
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