SMA WEBBOX-BT-20 User Manual
Page 80

Troubleshooting
SMA Solar Technology AG
80
SWebBox20-BA-en-13
User Manual
2
Inverter cannot be 
accessed.
Parameters for the Bluetooth 
communication have been 
changed.
When setting the parameters that regulate 
the Bluetooth connection (e.g. parameters 
for transmission power and country 
parameters), communication via Bluetooth 
is interrupted for a time, as the inverters 
perform a restart of the communication 
interface. This does not affect inverters 
with upgraded SMA Bluetooth 
Piggy-Back.
• Wait until the inverter has performed
a restart. The inverter can then be 
accessed again.
Inverter with upgraded SMA
Bluetooth Piggy-Back is in 
night mode.
• Wait until the inverter has returned
to normal operation. It can then be 
accessed again.
Inverter is not set to the NetID 
of the PV plant and 
commissioned.
• The inverter must be set to the NetID
of your PV plant and commissioned. 
Contact your installer.
3
The Sunny WebBox 
shows other 
inverters.
The NetID that is set has 
already been assigned by 
another Bluetooth PV plant.
• You must assign the PV plant a
NetID that is not already in use. 
Contact your installer.
4
An inverter is shown 
in the plant tree as 
an unknown device.
The inverter with integrated
Bluetooth has an old firmware 
version (only for inverters 
SB 3000TL-20, 
SB 4000TL-20, 
SB 5000TL-20).
• Ensure that the inverter with
integrated Bluetooth has the latest 
firmware version (see technical 
description "Firmware Update with 
SD Card" at www.SMA-Solar.com).
• Contact your installer.
The new inverter type is not 
recognised by the 
Sunny WebBox.
• Perform a self-update of the
Sunny WebBox (see page 64).
No. Problem
Cause
Remedy
