Table 7-1 LED indicators
No. Category Indicator
Status
Description
1 DC indication Steady green The DC side is properly connected, and the voltage on
the DC side is greater than or equal to 500 V.
Blinking
green slowly
The device is in standby mode.
Blinking red
fast
An environmental fault occurs on the DC side.
O The DC side is not properly connected, or the voltage
on the DC side is less than 500 V.
2 Running
indication
Steady green The device is operating in grid-tied mode.
Blinking
green slowly
The system environment is normal and the device is
not in the working state.
Blinking red
fast
An environmental fault occurs on the AC side.
O The AC side is not connected to the power grid.
3 Communication
indication
Blinking
green fast
The device receives data through the northbound FE
ports.
O The device has not received data through the FE ports
in at least 10s.
4 Fault/
Maintenance
indication
Steady red A major alarm is generated on the device.
Blinking red
fast
A minor alarm is generated on the device.
Blinking red
slowly
A warning is generated on the device.
Blinking
green slowly
The device is under local maintenance or shuts down
after receiving a command.
O No alarm is generated, and no local maintenance
operations are performed.
● Local maintenance refers to the operation of inserting a WLAN module or USB data
cable into the USB port of the device. For example, connecting to the SUN2000 app
through the WLAN module.
● If alarms are generated during the local maintenance, the fault/maintenance indicator
shows the local maintenance state rst. After the WLAN module or USB cable is
removed, the indicator shows the alarm state.
LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual 7 Powering On the System
Issue 02 (2021-11-15) Copyright © Huawei Technologies Co., Ltd. 116
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