Huawei SUN2000-55KTL-HV-D1 User Manual page 105

SUN2000-(55KTL, 60KTL) Series
User Manual
Alarm ID Alarm
Name
400 System
Fault
410 Abnormal
Auxiliary
Power
413 Abnormal
PV String
Connectio
n
504 Software
Version
Unmatch
505 Upgrade
Failed
Issue 02 (2017-07-30)
Alarm Possible Cause
Severity
connect to the inverter.

The SUN2000 output side
does not connect to an
isolation transformer when
the PV string output is
grounded.
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.
Major Cause ID = 1
The PV string does not
properly connect to the MPPT1
circuit.
Cause ID = 2
The PV string does not
properly connect to the MPPT2
circuit.
Cause ID = 3
The PV string does not
properly connect to the MPPT3
circuit.
Cause ID = 4
The PV string does not
properly connect to the MPPT4
circuit.
Minor Cause ID = 1/2/3
During inverter software
upgrade, the version of the
software loaded is incorrect.
Major Cause ID = 1
The upgrade does not end
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8 System Maintenance
Suggestion
2. If the PV string output is
grounded, check that the
SUN2000 output side connects to
an isolation transformer.
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 persists, contact
Huawei technical support.
Check the PV string for reverse
connection and cross connection.
Check whether you have performed
a software upgrade recently. If yes,
upgrade the software to the correct
version again.
Perform the upgrade again.
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