SolarEdge SE5000H-AU Installation Manual page 72

71 Power Optimiser Troubleshooting
Problem
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.
Possible Cause and Troubleshooting
Extra power optimiser(s) connected in the string
(not applicable to smart panels).
Check if an extra power optimiser is connected
in the string. If not – proceed to next solution.
A panel is connected directly to the string,
without a power optimiser (not applicable to
smart panels).
Verify that only power optimisers are connected
in the string and that no panel outputs are
connected without a power optimiser. If the
problem persists, proceed to the next step.
Power optimiser(s) malfunction.
1. Disconnect the wires connecting the power
optimisers in the string.
2. Measure the output voltage of each power
optimiser to locate the power optimiser that
does not output 1V safety voltage. If a
malfunctioning power optimiseris located,
check its connections, polarity, panel, and
voltage.
3. Contact SolarEdge Support. Do not 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.
EV Charging Single Phase Inverter MAN-01-00629-1.2