Huawei SUN2000-45KTL-US-HV-D0 User Manual page 94

SUN2000-45KTL-US-HV-D0
User Manual
Alarm ID Alarm
Name
400 System
Fault
410 Abnormal
Auxiliary
Power
411 AFCI
Self-Chec
k Failure
412 DC Arc
Fault
413 Abnormal
PV String
Connectio
n
Issue 02 (2017-09-15)
Alarm Possible Cause
Severity
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.
Major Cause ID = 1/2/3
AFCI check fails.
Major Cause ID = 1/2/3/4
The PV string cable is in poor
contact or with open circuits.
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.
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9 System Maintenance
Suggestion
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 fault persists, contact
Huawei technical support.
1. 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.
2. Disable the AFCI function if you
are sure not to use it.
Check whether the PV string cable is
in poor contact or with open circuits.
If yes, reconnect the cable.
Check the PV string for reverse
connection and cross connection.
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