Huawei SUN2000 Series User Manual page 72

SUN2000-(12KTL-25KTL)-M5 Series
User Manual
Alarm Alarm
ID Name
2081 Optimize
r fault
2085 Built-in
PID
operation
abnormal
Issue 01 (2022-06-15)
Alarm Possible Causes
Severity
combined or
exchanged.
● Cause ID = 8
The sunlight is
weak or changes
abnormally.
● Cause ID = 9
In partial
configuration
scenarios, the PV
string voltage
exceeds the
inverter input
voltage
specifications.
Warning Cause ID = 1
The optimizer is
offline or faulty.
Minor Cause ID = 1, 2
● The output
resistance of PV
arrays to ground
is low.
● The system
insulation
resistance is low.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Troubleshooting
Go to the optimizer information screen
to view the fault details.
● Cause ID = 1
1. Turn off the AC output switch and
DC input switch, wait for a period
of time (for details about the wait
time, see the description on the
device safety warning label), and
then turn on the DC input switch
and AC output switch.
2. If the alarm persists, contact your
dealer or Huawei technical
support.
● Cause ID = 2
1. Check the impedance between the
PV array output and the ground. If
a short circuit occurs or the
insulation is insufficient, rectify the
fault.
2. If the alarm persists, contact your
dealer or Huawei technical
support.
8 Maintenance
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