SMA METER BOX FOR SUNNY BACKUP - Manual (Page 30)

9 Troubleshooting SMA Solar Technology AG
30 METERBOXSBU-IA-en-40 Installation Manual
9 Troubleshooting
Message Cause and corrective measures
"RDY" LED is off. The voltage supply is interrupted or the Meter Box is defective.
Corrective measures:
If you are using a plug-in power supply:
• Ensure that voltage is present at the socket-outlet.
• Use the plug-in power supply included in the delivery.
If you are using the 2-pole plug:
• Check the alternative voltage source (see Section 6.5.2).
• Keep the insulated conductors as short as possible.
• Make sure that the selected conductor cross-section is sufficient.
• Insert the plug-in power supply included in the delivery.
After checking the plug-in power supply or the alternative voltage source,
restart the Meter Box:
1. If you are using a plug-in power supply, pull the plug from the
socket-outlet.
2. If you are using the 2-pole plug, disconnect the voltage source.
3. Wait 10 minutes. This allows the capacitors to discharge.
4. If you are using a plug-in power supply, insert the plug into the
socket-outlet.
5. If you are using the 2-pole plug, start the voltage source.
☑ "RDY" LED lights up green.
✖ "RDY" LED does not light up green?
The Meter Box may be defective.
• Contact the SMA Service Line.
"RDY" LED lights up
green. The Meter Box is in operation.
LED next to "RDY"
LED is flashing red. Communication cable route fault.
Corrective measures:
• Ensure that the terminators are attached
(see Section 6.4 "Connecting the Communication", page 24).
• Make sure all RJ45 plugs of the communication terminals are
inserted properly.