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
https://www.solaredge.com/sites/default/files/non_reporting_power_
optimizers.pdf
Problem Possible cause and troubleshooting
Pairing failed
Power optimizers are shaded.
If you connected the inverter to the monitoring
platform, retry pairing remotely (during
sunlight). Make sure to leave the inverter
ON/OFF switch ON and that S_OK appears in
the status screen.
String voltage is 0V
Power optimizer (s) output is disconnected.
Connect all power optimizer outputs.
String voltage not 0V but lower than
number of optimizers
Power optimizer(s) not connected in the string.
Connect all power optimizers
Module(s) not connected properly to power
optimizer inputs (not applicable to smart
modules).
Connect the modules to the optimizer inputs
String reverse polarity.
Check string polarity using a voltmeter and
correct if needed.
-Three Phase System Installation Guide MAN-01-00057-4.1
82 Power Optimizer Troubleshooting
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