Troubleshooting - Huawei SUN2000L User Manual

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

8.2 Troubleshooting

Alarm severities are defined as follows:
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Table 8-2 Common alarms and troubleshooting measures
Alarm ID Alarm
Name
2001 High
String
Input
Voltage
Issue 02 (2017-12-12)
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.
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8 System Maintenance
Maintenance
Interval
The first maintenance is
half a year 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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