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SMA CLUSTER CONTROLLER Installation User Manual

Page 79

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Problem

Cause and corrective measure

The login page does not open.

The Cluster Controller is not connected to the voltage sup-
ply.
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 power sup-
ply unit is defective.
Corrective measures:

• Ensure that the voltage supply is correctly connected

(see Section 6.14, page 70).

• If the voltage supply is connected correctly, replace

the 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 LAN via DHCP
and the voltage supply of the Cluster Controller was
briefly interrupted, it is possible that the DHCP server has
assigned the Cluster Controller a new IP address.
Corrective measures:

• Select the display view External communication

and read out the current IP address of the
Cluster Controller.

• Call up the IP address via the web browser.

7 Troubleshooting

SMA Solar Technology AG / SMA America, LLC

Installation Manual

79

ClusterController-IA-en-14