SUN2000 (8KTL-28KTL)
User Manual
Copyright © Huawei Technologies Co., Ltd.
ventilation.
The ambient temperature is
too high.
The internal fan is not
working.
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.
Cause ID = 1
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
when the PV strings are
grounded.
1. Check that the neutral wire and
PGND cable are properly
connected.
2. If the PV string output is
grounded, check that the
SUN2000 output side connects to
an isolation transformer.
Cause ID = 1/3/21/23/27
An unrecoverable fault has
occurred on a circuit inside the
SUN2000.
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.
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.
1. When the alarm is generated, the
SUN2000 shuts down
automatically. When the fault is
rectified, the SUN2000 starts
automatically.
2. If the alarm occurs repeatedly,
contact Huawei technical
support.
Cause ID = 1/2/3
The version of the software
loaded during a software
upgrade is incorrect.
Check whether a recent software
upgrade has been performed. If so,
upgrade the software again to the
correct version.
Cause ID = 1
The upgrade is incomplete.
Cause ID = 1
There is insufficient space
on the flash drive.
The flash drive has bad
blocks or is faulty.
1. Replace the monitoring board.
2. If the monitoring board is built
into the monitoring device,
replace the monitoring device.
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