SMA sunny home manager User Manual page 130

15 Troubleshooting
Problem
The Sunny Home Manager detects
none or not all of the new SMA de-
vices that are connected via Speed-
wire.
130 HoMan_Portal-BA-en-20
Cause and corrective measures
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
network cable requirements, see 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 snoop-
ing. This means that the connection to the SMA device is
interrupted due to apparent inactivity, and cannot be sub-
sequently restored.
Corrective measures:
• Deactivate the IGMP snooping function in the
network switch.
SMA Solar Technology AG
User Manual