SMA Solar Technology AG 7 Troubleshooting
Installation Manual ClusterController-IA-en-10 71
The login page does not open. The Cluster Controller is not connected to the voltage supply.
Corrective measures:
• Ensure that the three-pole plug for the voltage supply is
connected to terminal X1 of the Cluster Controller.
The voltage supply is reverse-connected or the top-hat rail
power supply unit is defective.
Corrective measures:
• Ensure that the voltage supply is correctly connected
(see Section 6.13).
• If the voltage supply is correctly connected, replace the
top-hat rail power supply unit.
A firewall is blocking the connection.
Corrective measures:
• Adjust the firewall settings in order to allow the required
connection.
If the Cluster Controller is connected to the local area network
(LAN) via DCHP and the voltage supply of the
Cluster Controller was interrupted, it is possible that the DHCP
server in the local area network (LAN) has assigned a new IP
address to the Cluster Controller.
Corrective measures:
• Select the External communication display view and
read out the current IP address of the Cluster Controller.
• Call up the IP address via the Internet browser.
Problem Cause and corrective measures
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