2 troubleshooting for the bluetooth connection, Troubleshooting for the bluetooth – SMA WEBBOX-BT-20 User Manual
Page 79

SMA Solar Technology AG
Troubleshooting
User Manual
SWebBox20-BA-en-13
79
10.2 Troubleshooting for the Bluetooth Connection
12 Windows does not
display the LAN 
connection.
The driver of the network card 
(Ethernet card) is not 
installed.
• Check the installation of the network
adapter in the device manager and 
reinstall the driver.
The network card is faulty.
• Replace the faulty network card with
a new one.
13 Fault in the display
of the user interface.
JavaScript is not enabled.
• Enable JavaScript in your Internet
browser.
No. Problem
Cause
Remedy
1
The Sunny WebBox 
displays no 
Bluetooth devices.
An incorrect NetID has been 
set.
• Set the NetID of the PV plant
(see installation manual of the 
Sunny WebBox with Bluetooth) and 
repeat the commissioning.
• Contact your installer.
The connection quality to the
Bluetooth plant is too poor.
• Reduce the distance to the devices
or use an SMA Bluetooth repeater 
to extend the radio coverage. 
Repeat the commissioning 
(see installation manual of the 
Sunny WebBox with Bluetooth).
Four masters are already 
connected to the Bluetooth 
plant.
• Remove a master and repeat the
commissioning (see installation 
manual of the Sunny WebBox with 
Bluetooth).
Two participants are already 
connected to the device via 
which you wish to establish 
connection to the Bluetooth 
plant.
• Change the position of the
Sunny WebBox to establish a 
connection to the plant via another 
device, or remove a master from the 
plant. Further information on 
SMA Bluetooth can be found in the 
download area of 
www.SMA-Solar.com
2
Inverter cannot be 
accessed.
The Bluetooth connection has 
been interrupted.
• Wait until the Sunny WebBox
automatically restores the 
connection.
No. Problem
Cause
Remedy
