Indicator Color Status Description
Blinking at
0.5 Hz
Querying is in progress.
Blinking at 4
Hz
The PSU is loading the application
program.
Alarm
indicator
Yellow O The PSU does not generate any
protection alarm.
Steady on ● A warning is generated due to
ambient overtemperature.
● A shutdown protection alarm is
generated due to ambient
overtemperature or
undertemperature.
AC input overvoltage or undervoltage
protection is triggered.
The PSU is hibernating.
Blinking at
0.5 Hz
The communication between the PSU
and the monitoring module is
interrupted.
Fault
indicator
Red O The PSU is normal.
Steady on The PSU locks out due to output
overvoltage.
The PSU has no output due to an
internal fault.
LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual 2 Overview
Issue 02 (2021-11-15) Copyright © Huawei Technologies Co., Ltd. 37
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