Troubleshooting - Huawei SUN2000-55KTL Series Quick Manual

Login screen
Quick
settings
9
FAQ
How Should I View Active Alarms?
Connect a USB data cable or a Bluetooth module to the USB port of the SUN2000 to enable the
communication between the SUN2000 and the app. After login, tap Alarm on the main menu to
display the Active Alarm screen.
10

Troubleshooting

Symptom
The PV string is
connected reversely.
Selecting a
connection mode
Main menu
screen
Possible Cause
The PV string cables are
connected reversely during
the SUN2000 installation.
Connecting
Bluetooth
The preset passwords for Common User,

Advanced User, and Special User are
00000a.
Use the initial password upon first power-on

and change it immediately after login. To
ensure account security, change the password
periodically and keep the new password in
mind. Not changing the initial 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.
NOTE
Set the correct grid code based on the application
region and scenario of the SUN2000.
Suggestion
Wait until the solar irradiance declines at night
and the PV string current reduces to below 0.5
A. Then, turn off the two DC switches, remove
the positive and negative connectors, and
rectify the connection of the DC input power
cable.
17
Switching
between users