SUN2000L-(2KTL-5KTL)
User Manual
8 System Maintenance
Issue 02 (2017-12-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
126
Check Item
Acceptance Criteria
Maintenance
Interval
Grounding
reliability
Ground cables are securely connected.
The first maintenance is
half a year after the
initial commissioning.
From then on, perform
the maintenance once
every 6 to 12 months.
8.2 Troubleshooting
Alarm severities are defined as follows:
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.
Table 8-2
Common alarms and troubleshooting measures
Alarm ID Alarm
Name
Alarm
Severity
Possible Cause
Suggestion
2001
High
String
Input
Voltage
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.
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
