SUN2000-4.95KTL-JPL0
User Manual
7 System Maintenance
Issue 03 (2020-06-03)
Copyright © Huawei Technologies Co., Ltd.
51
Alarm ID Alarm
Name
Alarm
Severity
Cause
Suggestions
61440
Faulty
Monitorin
g Unit
Minor
Cause ID = 1
The flash memory is
insufficient.
The flash memory has bad
sectors.
Turn off the AC output switch and
then the DC input switch. After 5
minutes, turn on the AC output
switch and then the DC input switch.
If the fault persists, replace the
monitoring board or contact your
dealer or Huawei technical support.
2070
Active
Islanding
Major
Cause ID = 1
When the power grid
experiences an AC power
outage, the solar inverter
detects islanding proactively.
Check that the grid connection
voltage of the solar inverter is
normal.
2071
Passive
Islanding
Major
Cause ID = 1
When the power grid
experiences an AC power
outage, the solar inverter
detects an island grid
passively.
Check that the grid connection
voltage of the solar inverter is
normal.
2072
Transient
AC
Overvolta
ge
Major
Cause ID = 1
The solar inverter detects that
the phase voltage exceeds the
transient AC overvoltage
protection threshold.
1.
Check whether the grid
connection voltage exceeds the
upper threshold. If yes, 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
undervoltage protection
threshold.
3.
Check whether the peak grid
voltage exceeds the upper
threshold.
Contact your dealer if the fault persists after you complete the procedures listed above.