Alar
m ID
Alarm
Name
Severit
y
Possible Cause Suggestion
3031 Battery
Pack
Temperatu
re
Imbalance
Minor Cause ID = 1
The temperatures of
electrochemical cells in
a battery pack are
unbalanced.
1. Determine the positions of the input
and output circuit breakers of the
ESC and the DC output power switch
of the PSU corresponding to [ESR-
CabinetNo ESM-SlotNo].
2. Check if there is any air conditioner
alarm or fan alarm in the battery
pack. If so, follow the related alarm
recovery suggestion to operate.
3. If no alarm above occurs, issue a
shutdown command to the ESC
associated with this ESR, turn
o the
switch on the battery side, the switch
on the bus side and the PSU output
DC switch in turn, and wait for 5
minutes.
4. Turn on the DC output switch of the
PSU, the switch on the battery side,
and the switch on the bus side in
sequence, and issue a running
command.
5. If the alarm persists, contact the
vendor or technical support.
3032
Battery
Expansion
Module
Overvolta
ge
Major Cause ID = 1, 2
The voltage of a battery
expansion module is too
high or the cell voltage
in the module is too
high.
1. Determine the positions of the input
and output circuit breakers of the
ESC and the AC input power switch
of the PSU corresponding to [ESR-
CabinetNo ESM-SlotNo].
2. Issue a hibernation command to the
ESR corresponding to the ESC, and
turn
o the switch on the battery
side, the switch on the bus side, and
the AC input power switch of the
PSU. Then wait for 5 minutes.
3. Check whether the power cable and
J1/J2 communications cable (aviation
plug) on the battery side of the rack
controller are correctly connected.
4. Turn on the DC output switch of the
PSU, the switch on the battery side,
and the switch on the bus side in
sequence, and issue a running
command.
5. If the alarm persists, contact the
vendor or technical support.
LUNA2000-200KWH-2H1 Smart String ESS
User Manual 13 Alarm Reference
Issue 03 (2023-03-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 191
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