Troubleshooting - Huawei 01075345 User Manual

SUN2000-(2KTL-6KTL)-L1
User Manual
Check Item
Grounding
reliability

8.3 Troubleshooting

Alarm severities are defined as follows:
●
●
●
Table 8-2 Common alarms and troubleshooting measures
Alarm Alarm Name
ID
2001 High String
Input Voltage
2002 DC Arc Fault
Issue 10 (2023-02-13)
Check Method
Check that ground cables are securely
connected.
Major: The SUN2000 enters the shutdown mode or functions abnormally
after a fault occurs.
Minor: Some components are faulty but the SUN2000 can still connect to the
power grid and generate power.
Warning: The SUN2000 functions normally, but its output power decreases
due to external factors.
Alarm Possible Causes
Severity
Major The PV array is not properly
configured. Excessive PV
modules are connected in
series to the PV string, and
therefore the open-circuit
voltage exceeds the
maximum SUN2000
operating voltage.
Cause ID = 1, 2
● 1: The PV1 input voltage
● 2: The PV2 input voltage
Major The PV string power cables
arc or are in poor contact.
Cause ID = 1, 2
● 1: PV1 DC arc fault
● 2: PV2 DC arc fault
Copyright © Huawei Technologies Co., Ltd.
is high.
is high.
8 System Maintenance
Maintenance
Interval
The first inspection is
6 months after the
initial
commissioning.
From then on, the
interval can be 6 to
12 months.
Troubleshooting
Check the serial connection
configuration of the PV
string and ensure that the
PV string open-circuit
voltage is not greater than
the maximum operating
voltage of the SUN2000.
After the PV array
configuration is corrected,
the alarm disappears.
Check whether the string
cables arc or are in poor
contact.
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