Power Optimizer Troubleshooting - SolarEdge SE330K Installation Manual

75 Power Optimizer Troubleshooting

Power Optimizer Troubleshooting

Malfunction
Pairing failed
PV string Voltage is 0V
PV string voltage not 0V but lower
than number of Power Optimizers
Possible Cause and Corrective Action
Power Optimizers are shaded.
Retry pairing (during sunlight). Make sure that
the ON/OFF/P switch of the inverter is ON and
that S_OK appears in the Status screen of the
SetApp mobile application.
Power Optimizer (s) output is disconnected.
Connect all Power Optimizer outputs.
Power Optimizer(s) not connected in the PV
string.
Connect all Power Optimizers.
Panel(s) not connected properly to Power
Optimizer inputs (not applicable to smart
modules).
Connect the modules to the Power Optimizer
inputs.
PV string reverse polarity.
Check PV string polarity using a voltmeter and
correct if needed.
SE330K Inverter P/N: SE330K-xxxxxxxxx