Installation Guide

Power Optimizer Troubleshooting
Iftheinverterstatusscreenindicatesthatnotallpoweroptimizersarepairedornotallare
reporting(P_OKxxx/yyy,andx<y),thoseoptimizerscanbeidentifiedthroughtheLCD.Refer
tohttp://www.solaredge.com/files/pdfs/products/inverters/non-responding-power-
optimizers.pdf

Problem Possible Cause Possible Solution
String voltage is 0V
Output of one or more power
optimizers is disconnected
Connect all power optimizer
outputs
String voltage not 0V but
lower than number of
optimizers
One or more of the power
optimizers are not connected in the
string
Connect all power optimizers
One or more of the modules are not
connected properly to their power
optimizer inputs
Connect the modules to the
optimizer inputs
Wrong polarity connection on one of
the strings
Check polarity of the string
output using a voltmeter and
correct if needed.
SolarEdge-Installation Guide MAN-01-00002-4.0
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Power Optimizer Troubleshooting