7 Troubleshooting
SMA Solar Technology AG
20
485i-Module-IA-en-19
Installation Manual
7 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 "Others" 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 detecting the new
485 Data Module.
Corrective measures:
• Prior to performing any work on the inverter,
disconnect the inverter from all voltage sources on
the AC and DC sides (see inverter installation
manual).
Several SMA communication products are
simultaneously querying data 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).