Malfunction Possible Cause and Corrective Action
String voltage not 0V but lower than
number of Power Optimisers
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.
Appendix A: Errors and Troubleshooting 59
Single Phase Energy Hub Inverter MAN-01-00812-1.1
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