Indicator Color Status Description Suggestion
AC input
overvoltage
or
undervoltage
protection is
triggered.
Check the
power grid
voltage.
The PSU is
hibernating.
Normal.
Blinking at
0.5 Hz
The
communicati
on between
the PSU and
the
monitoring
module is
interrupted.
Replace the
PSU or
monitoring
module.
Fault
indicator
Red O The PSU is
normal.
Normal.
Steady on The PSU
locks out due
to output
overvoltage
or it is not
properly
inserted.
Remove the
PSU and
then insert it
1 minute
later.
The PSU has
no output
due to an
internal
fault.
Replace the
PSU.
● 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.
LUNA2000-2.0MWH Series Smart String ESS
User Manual 10 Alarm Reference
Issue 08 (2022-11-15) Copyright © Huawei Technologies Co., Ltd. 191
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