SMA CLUSTER CONTROLLER

18 Troubleshooting
18.1 LED States
18.1.1 Operation LEDs
Assignment of the Status LED ( ):
The status LED can display the following statuses:
• Status of the ClusterController
• Status of the connected inverters
• Status of the system communication
• Status of the grid management services
If the status LED is not glowing green after commissioning, refer also to the event log of the
ClusterController to determine the precise cause of the error. The details of each error are logged
in the event log (see Section9.1, page51).
LED Status Cause and corrective measure
All off The ClusterController is not connected to the volt-
age supply.
Corrective measures:
• Connect the ClusterController to the voltage
supply (see the ClusterController installation
manual).
The voltage supply is reverse-connected or the
power supply unit is defective.
Corrective measures:
• Ensure that the voltage supply is correctly
connected (see the ClusterController
installation manual).
• If the voltage supply is connected correctly,
replace the power supply unit.
Power ( ) and status
( )
Power glowing
red, status glow-
ing yellow or red
The voltage supply is too low.
Corrective measures:
• Ensure that the connected voltage supply is
sufficient (see the ClusterController
installation manual).
• If the problem persists, contact the Service
(see Section20, page111).
Power ( )
glowing green The start procedure is complete. The ClusterCon-
troller is ready for operation.
18 Troubleshooting
SMA Solar Technology AG
User ManualClusterController-BA-en-1590