No.
Indicator
Status (Blinking Fast: On for 0.2s
and then Off for 0.2s; Blinking
Slowly: On for 1s and then Off for
1s)
Description
Blinking green fast
If the alarm/maintenance
indicator is red, an
environmental fault at the DC
side of the solar inverter is
generated.
Off
The solar inverter disconnects
from all PV strings, or the DC
input voltage of all MPPT
circuits is less than 200 V.
2
Grid connection
indicator
Steady green
The solar inverter is in grid-
tied mode.
Blinking green fast
If the alarm/maintenance
indicator is red, an
environmental fault at the AC
side of the solar inverter is
generated.
Off
The solar inverter is not in
grid-tied mode.
3
Communications
indicator
Blinking green fast
The solar inverter receives
communication data
normally.
Off
The solar inverter has not
received communication data
for 10 seconds.
4
Alarm/
Maintenance
indicator
Alarm status
Steady red
A major alarm is generated.
● If the PV connection
indicator or grid
connection indicator is
blinking green fast,
troubleshoot DC or AC
environmental faults as
instructed by the SUN2000
app.
● If the PV connection
indicator and grid
connection indicator are
both not blinking green
fast, replace components
or the solar inverter as
instructed by the SUN2000
app.
SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual
2 Overview
Issue 11 (2021-11-10)
Copyright © Huawei Technologies Co., Ltd.
17
