Power Optimizer Troubleshooting - SolarEdge storedge Installation Manual

Power Optimizer Troubleshooting

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.us/sites/default/files/non_reporting_power_
optimizers.pdf
Problem
Pairing failed
String voltage is 0V
String voltage not 0V but lower
than number of optimizers
String voltage is higher than the
number of optimizers
WARNING!
If the measured voltage is too
high, the installation may not
have a safe low voltage.
PROCEED WITH CARE! A
deviation of ±1% per string is
reasonable.
Si la tension mesuree est trop
haute, la tension basse de
securite pourrait manquer dans
l'installation. REDOUBLEZ DE
PRECAUTION. Une deviation
de ±1% par string est
raisonnable.
90
Possible cause and troubleshooting
Power optimizers are shaded.
If you connected the inverter to the SolarEdge monitoring platform, retry
pairing remotely (during sunlight).Make sure to leave the inverter ON/OFF
switch ON and that S_OK appears on the LCD..
Power optimizer(s) output is disconnected.
Connect all power optimizer outputs
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.
Extra power optimizer(s) connected in the string (not applicable to smart
modules).
Check if an extra power optimizer is connected in the string. If not – proceed
to next solution.
A module is connected directly to the string, without a power optimizer (not
applicable to smart modules).
Verify that only power optimizers are connected in the string and that no
module outputs are connected without a power optimizer. If the problem
persists, proceed to the next step.
Power optimizer(s) malfunction.
Disconnect the wires connecting the power optimizers in the string.
o
Measure the output voltage of each power optimizer to locate the power
o
optimizer that does not output 1V safety voltage. If a malfunctioning power
optimizer is located, check its connections, polarity, module, and voltage.
Do not continue before finding the problem and replacing the
o
malfunctioning power optimizer. If a malfunction cannot be bypassed or
resolved, skip the malfunctioning power optimizer, thus connecting a
shorter string.
SolarEdge StorEdge Installation Guide MAN-01-000262-1.2