SMA CLUSTER CONTROLLER Installation - Manual (Page 74)

LED Status Cause and corrective measure
Data carrier status
(
)
off The Cluster Controller is starting and no information is
yet available for data export or for the USB data car-
rier.
Corrective measures:
• Wait until the Cluster Controller has completed
the start process and is ready for operation.
Once the start process is complete, the power
LED (
) will glow green.
No USB data carrier was detected. It is possible that
no USB data carrier is connected or the USB data
carrier is not compatible.
Corrective measures:
• Ensure that a compatible USB data carrier is
connected (see Section 9, page 84).
glowing green The USB data carrier is compatible. The free storage
capacity is above 10%.
glowing yellow The USB data carrier connected to USB port 1 is
compatible but the free storage capacity is no more
than 10%.
Corrective measures:
• Delete files that are no longer required from the
USB data carrier.
or
• Replace the USB data carrier with a USB data
carrier that has sufficient free storage capacity.
Data carrier status
(
)
glowing red The USB data carrier connected to USB port 1 is full
or write-protected.
Corrective measures:
• If the USB data carrier is full, replace the USB
data carrier.
• If the USB data carrier is write-protected,
remove the write protection or use a USB data
carrier without write protection.
flashing green or
yellow or red Write or read accesses are currently being per-
formed on the USB data carrier.
Corrective measures:
• Only remove the USB data carrier once the
data carrier status LED is no longer flashing.
7 Troubleshooting SMA Solar Technology AG / SMA America, LLC
Installation Manual ClusterController-IA-en-14 74