Huawei SUN2000-30KTL-A User Manual page 95

SUN2000-(30KTL-A, 33KTL, 40KTL)
User Manual
Alarm Alarm
ID Name
321 Cabinet
Overtempe
rature
322 Abnormal
SPI
Communic
ation
326 Abnormal
Grounding
400 System
Fault
410 Abnormal
Auxiliary
Power
504 Software
Version
Unmatch
Issue 04 (2016-06-20)
Alarm Possible Cause
Severity
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.
Major Cause ID = 1
An unrecoverable fault
occurs on a circuit inside the
inverter.
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.
Major Cause ID = 1/3/21/23/27
An unrecoverable fault
occurs on a circuit inside the
inverter.
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.
Minor Cause ID = 1/2/3
During inverter software
upgrade, the version of the
software loaded is incorrect.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Suggestion
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.
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.
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.
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.
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.
Check whether you have performed a
software upgrade recently. If yes, upgrade
the software to the correct version again.
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