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SUN2000-4.95KTL-JPL1
User Manual
Alarm
Alarm Name
ID
2072
Transient AC
Overvoltage
2075
External Device
Port Short
Circuit
Issue 05 (2023-02-17)
Alarm
Possible Causes
Severity
Major
Cause ID = 1
The SUN2000 detects that
the phase voltage exceeds
the transient AC
overvoltage protection
threshold.
Warning
Cause ID = 1
The SUN2000 Alarm port is
short-circuited when
supplying 12 V power to a
peripherals device.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting
1. If the voltage at the grid
connection point is too
high, contact the local
power operator.
2. If you have confirmed
that the grid connection
voltage exceeds the
upper threshold and
have obtained the
consent of the local
power operator, modify
the overvoltage
protection threshold.
3. Check whether the peak
grid voltage exceeds the
upper threshold.
1. Turn off the AC and DC
switches on the
SUN2000 and
disconnect the
peripherals device from
the Alarm port. Then
power on the SUN2000
again and try to clear
the alarm manually over
the mobile phone app
by following the
instructions in the user
manual. If the alarm
persists, contact your
dealer or Huawei
technical support. If the
alarm is cleared, the
Alarm port is normal.
Check whether the
power port pin of the
peripherals device is
short-circuited.
2. After replacing the
peripherals device, start
the self-check according
to the user manual and
ensure that the port
functions properly.
87
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