Step 5 Turn on the DC switch at the bottom of the SUN2000.
Step 6 Wait for about 1 minute and observe the LED indicators on the SUN2000 to check
its running status.
Table 6-2 LED indicator description
Category Status Meaning
Running
indication
LED1 LED2 N/A
Steady green Steady green The SUN2000 is operating in grid-
tied mode.
Blinking green
at long
intervals (on
for 1s and
then o for
1s)
O The DC is on and the AC is o.
Blinking green
at long
intervals (on
for 1s and
then o for
1s)
Blinking green at long
intervals (on for 1s and
then o for 1s)
The DC is on, the AC is on, and the
SUN2000 is not exporting power to
the power grid.
O Blinking green at long
intervals (on for 1s and
then o for 1s)
The DC is o and the AC is on.
Steady orange Steady orange The SUN2000 is operating in the
o-grid mode.
Blinking
orange slowly
O The DC is on, and the SUN2000 has
no output in the o-grid mode.
Blinking
orange slowly
Blinking orange slowly The SUN2000 is operating in the
overload in backup mode.
O O Both the DC and AC are o.
Blinking red at
short intervals
(on for 0.2s
and then o
for 0.2s)
N/A There is a DC environmental alarm,
such as an alarm indicating that
High String Input Voltage, String
Reverse Connection, or Low
Insulation Resistance.
N/A Blinking red at short
intervals (on for 0.2s
and then o for 0.2s)
There is an AC environmental
alarm, such as an alarm indicating
Grid Undervoltage, Grid
Overvoltage, Grid Overfrequency, or
Grid Underfrequency.
Steady red Steady red Fault
SUN2000-(3KTL-10KTL)-M1 Series
User Manual 6 Commissioning
Issue 17 (2024-01-12) Copyright © Huawei Technologies Co., Ltd. 77