17
6. (Optional) Observe the LED to check the operating status of the Smart Dongle.
LED
Yellow (blinking 
green and red 
simultaneously)
The Dongle is secured and 
powered on.
Blinking at short 
intervals (on for 0.2s 
and then off for 0.2s)
The parameters for connecting 
to the router are to be set.
Blinking at long 
intervals (on for 0.5s 
and then off for 0.5s)
Successfully connected to the 
management system.
Blinking at short 
intervals (on for 0.2s 
and then off for 0.2s)
The inverter is communicating 
with the management system 
through the Dongle.
Yellow (blinking 
green and red 
simultaneously)
The Dongle is secured and 
powered on.
cycle (on for 0.1s and 
then off for 1.9s)
Dialing (duration < 1 min)
Blinking at long intervals 
(on for 1s and then off 
for 1s)
successfully (duration < 30s).
Successfully connected to the 
management system.
Blinking at short 
intervals (on for 0.2s and 
then off for 0.2s)
The inverter is communicating 
with the management system 
through the Dongle.
4G Smart Dongle 
6
Commissioning
•
The screenshots are for reference only. The actual screens may vary.
•
Obtain the initial password for connecting to the solar inverter WLAN from the label on the 
side of the solar inverter.
•
To ensure account security, change the password periodically and keep the new password in 
mind. Not changing the password may cause password disclosure. A password left 
unchanged for a long period of time may be stolen or cracked. If a password is lost, devices 
cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.
•
Before maintaining the optimizers and PV strings, turn off the AC switch and set the DC 
switch to OFF. Otherwise, the PV strings may be energized, resulting in electric shocks.