Category Status Description
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)
Both the DC and AC
are 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)
– There is a DC
environmental alarm,
such as an alarm
indicating that High
String Input Voltage,
String Reverse
Connection, or Low
Insulation Resistance.
– 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.
SUN2000-(2KTL-6KTL)-L1
User Manual 6 System Commissioning
Issue 04 (2021-04-01) Copyright © Huawei Technologies Co., Ltd. 60
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