No. Indicator Status (Blinking Fast: On for 0.2s
and then O for 0.2s; Blinking
Slowly: On for 1s and then O for
1s)
Description
1 PV connection
indicator
Steady green At least one PV string is
properly connected, and the
DC input voltage of the
corresponding MPPT circuit is
at least 200 V.
Blinking green fast If the alarm/maintenance
indicator is red, an
environmental fault at the DC
side of the solar inverter is
generated.
O 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.
O The solar inverter is not in
grid-tied mode.
3 Communications
indicator
Blinking green fast The solar inverter receives
communication data
normally.
O The solar inverter has not
received communication data
for 10 seconds.
SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual 2 Overview
Issue 15 (2023-01-31) Copyright © Huawei Technologies Co., Ltd. 23
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