LUNA2000-200KWH-2H1 Smart String ESS
User Manual
Copyright © Huawei Technologies Co., Ltd.
The PSU has no
output due to an
internal fault.
The ESC-No ID is the same as that displayed on the app. The ID is 1 on the left and 2 on the right. A
maximum of two ESC-No IDs are supported.
The ESR-CabinetNo ID is the same as that displayed on the app. The ID is 1 on the left and 2 on the
right. A maximum of two ESR-CabinetNo IDs are supported.
ESM-SlotNo indicates the slot number of the battery pack.
Table 6-3 ESC/BCU common alarms and troubleshooting measures
Battery
Pack
Communic
ation of
Rack
Controller
Abnormal
Cause ID = 1
The rack controller failed
to communicate with the
battery pack.
1. Determine the positions of the input
and output circuit breakers of the ESC
corresponding to [ESR-CabinetNo
ESM-SlotNo].
2. Issue a shutdown command, turn off
the switch on the battery side, the
switch on the bus side, and the AC
power supply switch, and wait for 5
minutes.
3. Check whether the communication
cable to battery [ESR-CabinetNo
ESM-SlotNo] is correct.
4. Turn on the AC power supply switch,
the switch on the battery side, and the
switch on the bus side in sequence,
and issue a startup command.
5. If the alarm persists, contact your
dealer or technical support.
Cause ID = 1–34
A major fault has
occurred on the internal
circuit of the rack
controller.
1. Locate the input and output circuit
breakers associated with [ESC-No].
2. Issue a hibernation command to the
ESR corresponding to the ESC, and
turn off the switch on the battery side
and the switch on the bus side in
sequence, and wait for 5 minutes.
3. Turn on the switch on the battery side
and the switch on the bus side in
sequence, and issue a startup
command.
4. If the alarm persists, contact your
dealer or technical support.
1. Check whether a battery pack
overvoltage alarm is generated in the
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