Power Optimiser Troubleshooting - SolarEdge SE15K-AU Installation Manual

57 Power Optimiser Troubleshooting
Additional Troubleshooting
1. Check that the modem or hub/router is functioning properly.
2. Check that the connection to the internal connector on the communication board is
properly done.
3. Check that the selected communication option is properly configured.
4. Use a method independent of the SolarEdge device to check whether the network
and modem are operating properly. For example, connect a laptop to the Ethernet
router and connect to the Internet.
5. Check whether a firewall or another type of network filter is blocking
communication.

Power Optimiser Troubleshooting

Malfunction
Pairing failed
String voltage is 0V
String voltage not 0V but lower than
number of Power Optimisers
Possible Cause and Corrective Action
Power Optimisers are shaded.
If you connected the inverter to the monitoring
platform, retry pairing remotely (during
sunlight). Make sure to leave the inverter
ON/OFF/P switch ON and that S_OK appears in
the status screen.
Power Optimiser (s) output is disconnected.
Connect all Power Optimiser outputs.
Power Optimiser(s) not connected in the string.
Connect all Power Optimisers.
Panel(s) not connected properly to Power
Optimiser inputs (not applicable to smart
modules).
Connect the modules to the Power Optimiser
inputs.
String reverse polarity.
Check string polarity using a voltmeter and
correct if needed.
Three Phase Inverter with SetApp Configuration