SMA Solar Technology AG
6 Troubleshooting
Installation Manual
485BRD-10-IA-en-12
19
6 Troubleshooting
Problem
Cause and corrective measures
The emergency channel list "Emergncy"
or "EmgncyXX" is displayed in the
communication product
(e. g. Sunny WebBox, Sunny Explorer).
The inverter is displayed with the device
class "Other" in Sunny Portal.
The 485 data module has been installed in an inverter
without first disconnecting the inverter on the AC and
DC sides. This prevents the inverter from detecting the
new 485 Data Module.
Corrective measures:
• Prior to performing any work on the inverter,
disconnect the inverter from any voltage sources on
the AC and DC sides (see inverter installation
manual).
Several SMA communication products query data
simultaneously from the devices via
Bluetooth
(e.g. Sunny Explorer, Sunny Beam with
Bluetooth
) and
RS485 communication (e.g. Sunny WebBox).
This can cause data congestion if a lot of data is
transmitted simultaneously. If this state lasts for more
than five minutes, the inverter carries out a reset of the
485 data module. Due to the data congestion, the
inverter cannot detect the 485 data module after the
reset.
Corrective measures:
• Wait until the inverter restarts the next morning,
then the inverter will detect the 485 data module.
or
Disconnect the inverter from voltage sources on the
AC and DC sides and recommission it
(see the inverter installation manual).
