No. Indicator Status Meaning
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
higher than or equal to 600 V.
O The SUN2000 disconnects
from all PV strings, or the DC
input voltage of each MPPT
circuit is less than 600 V.
2 Grid-tied indicator Steady green The SUN2000 is in grid-tied
mode.
O The SUN2000 is not in grid-
tied mode.
3 Communication
indicator
Blinking green The SUN2000 receives
communications data
normally.
O The SUN2000 receives no
communications data for 10s.
4 Alarm/Maintenance
indicator
Alarm
state
Blinking red at
long intervals (on
for 1s and then
o for 4s)
A warning alarm is generated.
Blinking red at
short intervals
(on for 0.5s and
then o for 0.5s)
A minor alarm is generated.
Steady red A major alarm is generated.
Local
maintena
nce state
Blinking green at
long intervals (on
for 1s and then
o for 1s)
Local maintenance is in
progress.
Blinking green at
short intervals
(on for 0.125s
and then o for
0.125s)
Local maintenance fails.
Steady green Local maintenance succeeds.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
2 Overview
Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 17
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