Huawei SUN2000-42KTL User Manual page 95

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SUN2000-(36KTL,42KTL)
User Manual
Alarm
Alarm
ID
Name
321
Cabinet
Overtemp.
326
Abnormal
Grounding
System
400
Fault
410
Abn.
Auxiliary
Power
504
Software
Ver.
Unmatch
505
Upgrade
Failed
61440
Flash Fault
If you cannot rectify faults with the measures listed in the preceding table, contact Huawei technical
support.
Issue Draft A (2016-05-30)
Alarm
Possible Cause
Severity
Major
The inverter is installed
in a place with poor
ventilation.
The ambient temperature
exceeds the upper
threshold.
The internal fan works
abnormally.
Major
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.
An unrecoverable fault
Major
occurs on a circuit inside the
inverter.
Major
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
During inverter software
upgrade, the version of the
software loaded is incorrect.
Major
The upgrade does not end
normally.
The flash memory is
Minor
insufficient.
The flash memory has
bad sectors.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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.
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.
Perform the upgrade again.
1. Replace the monitoring board.
2. If the monitoring board is built into the
monitoring device, replace the
monitoring device.
8 Maintenance
89

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