Powering On The System - Huawei SUN2000 Series Quick Manual

6

Powering On the System

Before turning on the AC switch between the solar inverter and the power grid, check that the AC
voltage is within the specified range using a multimeter set to the AC position.
1. Turn on the AC switch between the solar inverter and the power grid.
2. Set DC SWITCH 1 (MAIN SWITCH) at the bottom of the solar inverter chassis to ON.
3. Check the status of the PV connection indicator. If it is steady green, set DC SWITCH 2 and DC
SWITCH 3 to ON.
4. Observe the LED indicators to check the operating status of the solar inverter.
Indicator Status (Blinking Fast: On for 0.2s
and then Off for 0.2s; Blinking
Slowly: On for 1s and then Off
for 1s)
PV connection Steady green
indicator
Blinking green fast
Off
Steady green
Grid connection
indicator
Blinking green fast
Off
Communications Blinking green fast
indicator
Off
Alarm/ Alarm status Steady red
Maintenance
indicator
Local
maintenance
status
Blinking red fast
Blinking red slowly
Steady green
Blinking green fast
Blinking green slowly In local maintenance or shuts down over a
17
Description
At least one PV string is properly connected,
and the DC input voltage of the corresponding
MPPT circuit is at least 200 V.
If the alarm/maintenance indicator is red, an
environmental fault at the DC side of the solar
inverter is generated.
The solar inverter disconnects from all PV
strings, or the DC input voltage of all MPPT
circuits is less than 200 V.
The solar inverter is in grid-tied mode.
If the alarm/maintenance indicator is red, an
environmental fault (excluding Grid Loss) at
the AC side of the solar inverter is generated.
​ T he solar inverter is not in grid-tied mode (due
to reasons including Grid Loss).
The solar inverter receives communication
data normally.
The solar inverter has not received
communication data for 10 seconds.
A major alarm is generated.
•
If the PV connection indicator or grid
connection indicator is blinking green fast,
troubleshoot DC or AC environmental faults
as instructed by the SUN2000 app.
•
If the PV connection indicator and grid
connection indicator are both not blinking
green fast, replace components or the solar
inverter as instructed by the SUN2000 app.
A minor alarm is generated.
A warning alarm is generated.
Local maintenance succeeds.
Local maintenance fails.
command.