Troubleshooting - Huawei SUN2000L2KTL User Manual

SUN2000L-(2KTL-5KTL)
User Manual
Check Item
Grounding
reliability

7.2 Troubleshooting

Alarm severities are defined as follows:
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Table 7-2 Common alarms and troubleshooting measures
Alarm Alarm Name
ID
2001 High String Input
Voltage
Issue 05 (2019-06-06)
Acceptance Criteria
Ground cables are securely connected.
Major: The SUN2000L enters Shutdown mode and disconnects from the power grid to
stop generating power after a fault occurs.
Minor: Some components are faulty but the SUN2000L can still connect to the power
grid and generate power.
Warning: The SUN2000L output power decreases due to external factors.
Alarm Possible Cause
Severity
Major The PV array is incorrectly
configured. Excessive PV
modules are connected in
series to the PV string, and
therefore the open-circuit
voltage exceeds the
maximum inverter input
voltage.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Maintenance
Interval
Perform the first
maintenance 6 months
after the initial
commissioning. From
then on, perform the
maintenance once every
6 to 12 months.
Suggestion
Reduce the number of PV
modules connected in series to the
PV string until the PV string
open-circuit voltage is less than or
equal to the maximum inverter
input voltage. After the PV array
is correctly configured, the
inverter alarm disappears.
The following is the mapping
between PV strings and alarm
cause IDs:
 Cause ID 1: string 1
 Cause ID 2: string 2
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