Alarm
ID
Alarm Name Alarm
Severity
Possible Causes Troubleshooting
2068 Battery
Abnormal
Minor The battery is faulty,
disconnected, or the
battery circuit breaker is
OFF when the battery is
running.
Cause ID = 1–4
● 1: The battery
communication is
abnormal.
● 2: The battery port
experiences overcurrent.
● 3. The battery enabling
cable is not properly
connected.
● 4: The battery port
voltage is abnormal.
1. If the battery fault
indicator is steady on or
blinking, contact the
battery supplier.
2. Check that the battery
enabling/power/
communications cable is
correctly installed, and
that the
communications
parameters are the
same as the SUN2000
RS485 congurations.
3. Check that the auxiliary
power switch on the
battery is set to ON.
4. Send a shutdown
command on the app.
Turn o the AC output
switch, DC input switch,
and battery switch. Then
turn on the battery
switch, AC output
switch, and DC input
switch in sequence after
5 minutes.
5. If the fault persists,
contact your dealer or
Huawei technical
support.
2070 Active Islanding Major Cause ID = 1
When the power grid
experiences an AC power
outage, the SUN2000
detects islanding
proactively.
Check that the grid
connection voltage of the
SUN2000 is normal.
2077 O-grid output
overload
Major Cause ID = 1/2
The output is overloaded or
short-circuited.
1. Check whether the
device output is short-
circuited.
2. Check whether the
device load
conguration exceeds
the rated value.
SUN2000-(2KTL-6KTL)-L1
User Manual 8 System Maintenance
Issue 04 (2021-04-01) Copyright © Huawei Technologies Co., Ltd. 92
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