Huawei SUN2000-8K-LC0 Series User Manual page 109

SUN2000-(8K, 10K)-LC0 Series
User Manual
Alarm ID Alarm
Name
2081 Optimize
r Fault
Issue 01 (2023-09-15)
Alarm Possible Causes
Severity
1. Check whether the
number of optimizers
connected in series in
the PV string is below
the lower threshold.
2. The string output
terminals are in
reverse polarity.
3. Disconnection has
occurred on the
string.
4. The output terminals
of some optimizers in
the PV string are
connected in reverse
polarity.
● 13:
1. Partial optimizer
configuration is not
supported.
2. The number of
optimizers connected
in series exceeds the
upper threshold.
Warning Cause ID = 1
An optimizer is faulty.
Copyright © Huawei Digital Power Technologies Co., Ltd.
8 System Maintenance
Troubleshooting
● ID9: Calculate the PV string
voltage based on the number
of PV modules in the PV
string and check whether the
PV string voltage exceeds the
upper threshold of the
inverter input voltage.
● ID12: Check the string cable
connection. For details, see
the optimizer installation
quick guide.
1. Check whether the
number of optimizers
connected in series in the
PV string is below the
lower threshold.
2. Check whether the PV
string output is in reverse
polarity.
3. Check whether the PV
string output is
disconnected.
4. Check whether the
optimizer output extension
cable (if any) is prepared
correctly (positive
connector at one end and
negative connector at the
other).
● ID13:
1. Rectify the optimizer
configuration.
2. Check that the number of
optimizers connected in
series is within the upper
threshold.
1. View the fault details on the
optimizer information page.
2. Contact your dealer or
technical support to replace
the optimizer.
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