SUN2000-(30KTL-A, 33KTL, 40KTL)
User Manual
8 System Maintenance
Issue 04 (2016-06-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
89
Alarm
ID
Alarm
Name
Alarm
Severity
Possible Cause
Suggestion
321
Cabinet
Overtempe
rature
Major
Cause ID = 1
The inverter is installed
in a place with poor
ventilation.
The ambient temperature
exceeds the upper
threshold.
The internal fan works
abnormally.
1.
Check the ventilation and ambient
temperature of the inverter installation
position.
2.
If the ventilation is poor or the ambient
temperature exceeds the upper
threshold, improve the ventilation and
heat dissipation.
3.
If the ventilation and ambient
temperature both meet requirements,
contact Huawei technical support.
322
Abnormal
SPI
Communic
ation
Major
Cause ID = 1
An unrecoverable fault
occurs on a circuit inside the
inverter.
Turn off the AC output switch and DC
input switch. Then turn on the AC output
switch and DC input switch after 5
minutes. If the fault persists, contact
Huawei technical support.
326
Abnormal
Grounding
Major
Cause ID = 1
The neutral wire or
PGND cable does not
connect to the inverter.
When you are grounding
the PV string, you do not
connect an isolation
transformer to the
inverter output.
1.
Check that the neutral wire or PGND
cable properly connects to the inverter.
2.
If the PV string is grounded, check
whether the inverter output needs to
connect to an isolation transformer. If
yes, connect the transformer to the
inverter.
400
System
Fault
Major
Cause ID = 1/3/21/23/27
An unrecoverable fault
occurs on a circuit inside the
inverter.
Turn off the AC output switch and DC
input switch. Then turn on the AC output
switch and DC input switch after 5
minutes. If the fault persists, contact
Huawei technical support.
410
Abnormal
Auxiliary
Power
Major
Cause ID = 4
The sampling control board
has an abnormal voltage,
which may be caused by the
following:
The internal power chip
of the sampling control
board is faulty.
The detection circuit
becomes faulty.
1.
When the alarm is generated, the
inverter shuts down automatically.
When the fault is rectified, the inverter
starts automatically.
2.
If the alarm occurs repeatedly, contact
Huawei technical support.
504
Software
Version
Unmatch
Minor
Cause ID = 1/2/3
During inverter software
upgrade, the version of the
software loaded is incorrect.
Check whether you have performed a
software upgrade recently. If yes, upgrade
the software to the correct version again.