SMA SUNNY HOME MANAGER Installation - Manual (Page 59)

SMA Solar Technology AG 9 Troubleshooting
Installation Manual HoMan-IA-en-17 59
The PV System Setup Assistant
lists none or not all of the new
SMA devices that are
connected via Speedwire. The network cable that connects the SMA device to the router/
network switch is not suitable for 100 MBit/s.
Corrective measures:
• Use a network cable suitable for Speedwire (for the network
cable requirements, see the manual of the Speedwire
device).
DHCP is not activated in your router.
Corrective measures:
• Activate DHCP in the router.
• If your router does not support DHCP, configure the static
network settings on the Speedwire device using SMA
Connection Assist. You can obtain the SMA Connection
Assist software free of charge from the download area at
www.SMA-Solar.com.
The router/network switch used in the network deactivates the
LAN ports when they appear to be inactive in order to save
energy. As a result, it is not possible to establish any connection
to the SMA device.
Corrective measures:
• Configure the router/network switch so that the LAN ports
are not deactivated.
The network switch used in the network uses IGMP snooping.
This means that the connection to the SMA device is disconnected
if it appears to be inactive and cannot be subsequently restored.
Corrective measures:
• Deactivate the IGMP snooping function in the network
switch.
The firewall may not have been set up correctly.
Corrective measures:
• Enable ports 9523 and 3478 in the firewall (see firewall
manual).
The firewall or IP filter may not have been set up correctly.
Corrective measures:
• Adjust firewall or IP filter settings (see firewall or router
manual).
Problem Cause and corrective measures