Category Status Description
– 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.
Communication
indicator
LED3 –
Blinking green at short intervals (on for 0.2s and
then o for 0.2s)
Communication is in
progress.
Blinking green at long intervals (on for 1s and
then o for 1s)
The mobile phone is
connected to the
SUN2000.
O There is no
communication.
If the o-grid load is overloaded, indicators LED1 and LED2 on the inverter blink orange
slowly. Reduce the
o-grid load power and manually clear the alarm or until the inverter is
recovered. The inverter attempts to restart at an interval of 5 minutes. If the inverter fails to
restart for three times, the interval changes to 2 hours. If the inverter is standby in o-grid
mode, check the inverter alarms and rectify the fault.
Table 6-3 LED indicators 2
Category
Status Description
Device
replacement
indication
LED1 LED2 LED3 –
Steady red Steady red Steady red The SUN2000 hardware
is faulty. The SUN2000
needs to be replaced.
----End
SUN2000-(2KTL-6KTL)-L1
User Manual 6 System Commissioning
Issue 10 (2023-02-13) Copyright © Huawei Technologies Co., Ltd. 68
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