Huawei SUN2000-33KTL User Manual page 87

SUN2000-(33KTL, 40KTL)
User Manual
Alarm ID Alarm
Name
326 Electrical
Grounding
Fault
400 System
Fault
502 Internal
Communic
ation Fault
504 Version
Mismatch
505 Firmware
Upgrade
Failed
61440 Flash Fault
If a fault cannot be rectified by the measures listed in
Issue 03 (2015-12-01)
Alarm Causes
Severity

Major The neutral wire or PGND
cable is not connected to
the SUN2000.

The isolation transformer is
not connected to the
SUN2000 at the output side
if the PV strings are
grounded.
Major An unrecoverable fault has
occurred on a circuit inside the
SUN2000.
Minor  The communication circuit
of the SUN2000 is
disturbed.
 The communication circuit
is damaged.
 The internal
communication address is
incorrectly set.
Minor During SUN2000 software
upgrade, the version of the
software loaded is incorrect.
Major Upgrade is not properly
completed.
Minor  The flash space is
insufficient.

The flash drive has bad
blocks or is faulty.
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Measures
1. Check that the neutral wire and
PGND cable are properly
connected.
2. Check that an isolation
transformer is connected to the
SUN2000 at the output side if the
PV strings are grounded.
Flip the DC SWITCH on the
SUN2000 to OFF, wait 5 minutes,
and flip the DC SWITCH to ON.
Check whether the fault is rectified.
If the fault persists, contact Huawei
technical support.
1. If the fault is caused by a short
circuit of the communication
circuit inside the SUN2000, the
SUN2000 automatically recovers
to the normal operating status
after the fault is rectified.
2. If the fault persists for a long
time, contact Huawei technical
support.
Check whether you have performed
a software upgrade recently. If yes,
upgrade the software to the correct
version again.
Upgrade again.
1. Replace the monitoring board.
2. If the monitoring board is built in
the monitoring device, replace
the monitoring device.
Table 8-2, contact Huawei technical support.
8 Maintenance
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