Alarm
ID
Alarm
Name
Severi
ty
Possible Cause Suggestion
2006 DC Short-
Circuited or
in Reverse
Polarity
Major Cause ID = 1
The DC bus of the device is
short-circuited or connected in
reverse polarity.
Power o the device (turn o
the AC switch and DC switch,
and wait for a period specied
on the device safety warning
label), and then perform the
following operations:
Check whether the DC
terminals are short-circuited or
connected in reverse polarity. If
yes, adjust the DC bus cable
connection.
2007 DC
Connected
in Series
Major Cause ID = 1
The DC buses of the device are
connected in series.
Power o the device (turn o
the AC switch and DC switch,
and wait for a period specied
on the device safety warning
label), and then perform the
following operations:
Check whether the DC
terminals are connected in
series. If yes, adjust the DC bus
cable connection.
2008 DC Bus Not
Securely
Connected
Major Cause ID = 1
The DC bus of the device is
not securely connected.
Power o the device (turn o
the AC switch and DC switch,
and wait for a period specied
on the device safety warning
label), and then perform the
following operations:
Check whether the DC
terminals are connected
securely. If not, adjust the DC
bus cable connection.
2031 Phase Wire
Short-
Circuited to
PE
Major Cause ID = 1
The phase wire is short-
circuited to PE or its
impedance to PE is low.
Check the impedance of the
phase wire to PE, locate the
position with low impedance,
and rectify the fault.
2032 Grid Failure Major Cause ID = 1
1. The power grid experiences
an outage.
2. The AC power cable is
disconnected or the AC
circuit breaker is OFF.
1. Check whether the AC
voltage is normal.
2. Check that the AC power
cable is connected and that
the AC switch is ON.
LUNA2000-100KTL-M1 Smart Power Control System
User Manual 8 Alarm Reference
Issue 02 (2023-01-10) Copyright © Huawei Technologies Co., Ltd. 86
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