Category Status Description
Blinking red fast (On
for 0.2s and O for
0.2s)
N/A There is a DC
environmental alarm.
For example, the input
voltage of the PV string
is high, the PV string is
reversely connected, or
the insulation
resistance is low.
N/A Blinking red fast (On
for 0.2s and O for
0.2s)
There is an AC
environmental alarm,
such as grid
undervoltage, grid
overvoltage, grid
overfrequency, or grid
underfrequency.
Steady red Steady red Faulty.
Communications
indicator
LED3 N/A
Blinking green fast (On for 0.2s and O for 0.2s) Communication is in
progress.
Blinking green slowly (On for 1s and O for 1s) A mobile phone is
connected.
O There is no
communication.
Table 2-3 LED description 2
Category
Status Description
Device
replacement
indicator
LED1 LED2 LED3 N/A
Steady red Steady red Steady red The SUN2000
hardware is
faulty and the
SUN2000 needs
to be replaced.
2.3 Label Description
SUN2000-4.95KTL-JPL1
User Manual 2 Product Overview
Issue 05 (2023-02-17) Copyright © Huawei Technologies Co., Ltd. 17
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