Power Optimizer Troubleshooting - SolarEdge SE66.6KUS Installation Manual

Power Optimizer Troubleshooting

Power Optimizer Troubleshooting
Pairing failed
String voltage is 0V
String voltage not 0V but lower than number of optimisers
String voltage is higher than number of optimisers
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.
72
-Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.4
Problem
Possible cause and
troubleshooting
Power optimisers 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.
Power optimiser (s) output is disconnected.
Connect all power optimiser outputs.
Power optimiser(s) not connected in the string.
Connect all power optimisers
Module(s) not connected properly to power
optimiser inputs (not applicable to smart
modules).
Connect the modules to the optimiser inputs
String reverse polarity.
Check string polarity using a voltmeter and
correct if needed.
Extra power optimiser(s) connected in the
string (not applicable to smart modules).
Check if an extra power optimiser is connected
in the string. If not – proceed to next solution.
A module is connected directly to the string,
without a power optimiser (not applicable to
smart modules).
Verify that only power optimisers are
connected in the string and that no module
outputs are connected without a power
optimiser. If the problem persists, proceed to
the next step.
Power optimiser(s) malfunction.
Disconnect the wires connecting the power
o
optimisers in the string.
Measure the output voltage of each power
o
optimiser to locate the power optimiser that
does not output 1V safety voltage. If a
malfunctioning power optimiseris located,
check its connections, polarity, module,
and voltage.
Contact SolarEdge Support. Do not
o
continue before finding the problem and
replacing the malfunctioning power
optimiser. If a malfunction cannot be
bypassed or resolved, skip the
malfunctioning power optimiser, thus
connecting a shorter string.