SolarEdge StorEdge Installation Manual page 99

Power Optimizer Troubleshooting
String voltage is higher than 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.
96
Problem
StorEdge Inverter Installation Guide MAN-01-00390-1.1
Possible cause and
troubleshooting
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
o
optimizers in the string.
Measure the output voltage of each power
o
optimizer to locate the power optimizer that
does not output 1V safety voltage. If a
malfunctioning power optimizeris located,
check its connections, polarity, module,
and voltage.
Contact SolarEdge Support. Do not
o
continue before finding the problem and
replacing the malfunctioning power
optimizer. If a malfunction cannot be
bypassed or resolved, skip the
malfunctioning power optimizer, thus
connecting a shorter string.