SMA WEBBOX-BT-20 - Manual (Page 77)

SMA Solar Technology AG Troubleshooting
User Manual SWebBox20-BA-en-13 77
7 The firmware
update for
connected devices
was unsuccessful. You are not connected to the
Internet. • Restore Internet access. If
necessary, contact your Internet
service provider.
☑ If you have activated the automatic
device update, the automatic device
update restarts on the next day.
• If you would like to start the device
update immediately, perform a
manual device update
(see ”Performing a manual device
update” (page 69)).
The SD card has been
removed during the update
process. • Reinsert the SD card into the SD
card slot of the Sunny WebBox and
perform a manual device update
(see ”Performing a manual device
update via SD card” (page 71)).
After five attempts, the system
was unable to transmit the
update file to the PV plant
devices. • Check the status of the Bluetooth
connection for the devices of your
PV plant. Please note that the
Bluetooth connection can also be
interrupted by a lack of DC input
voltage at the inverters. The DC
input voltage can vary depending
on the time of day, weather or the
condition of the PV modules
(e.g. covered with snow or leaves).
– If necessary, improve the
connection quality.
– If you would then like to start the
device update immediately,
perform a manual device update
(see ”Performing a manual
device update” (page 69) or
”Performing a manual device
update via SD card”
(page 71)).
No. Problem Cause Remedy