Huawei SUN2000-8K-LC0 - Page 99

Table 8-2 Common alarms and troubleshooting measures
Alarm ID Alarm
Name
Alarm
Severity
Possible Causes Troubleshooting
2001 String
Voltage
High
Major The PV array is not
properly congured.
Excessive PV modules are
connected in series to the
PV string, and therefore the
open-circuit voltage
exceeds the maximum
operating voltage of the
device.
Cause ID = 1, 2, 3
● 1: The PV1 input voltage
is high.
● 2: The PV2 input voltage
is high.
● 3: The PV3 input voltage
is high.
Check the serial connection
conguration of the PV string
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
disappears.
2002 DC Arc
Fault
Major The PV string power cables
arc or are in poor contact.
● Cause ID 1: PV1 DC arc
fault
● Cause ID 2: PV2 DC arc
fault
● Cause ID 3: PV3 DC arc
fault
Check whether the string cables
arc or are in poor contact.
2003 DC Arc
Fault
Major The PV string power cables
arc or are in poor contact.
(String-level precise
detection)
● Cause ID 1: PV string 1
● Cause ID 2: PV string 2
● Cause ID 3: PV string 3
Check whether the PV string
cables arc or are in poor contact.
SUN2000-(8K, 10K)-LC0 Series
User Manual 8 System Maintenance
Issue 01 (2023-09-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 92