Victron energy MultiPlus 12/3000/120 – 50 Manual page 42

One alarm LED lights
and the second flashes.
The charger does not
operate.
38
The inverter is switched off
due to alarm activation by the
lighted LED. The flashing LED
indicates that the inverter was
about to switch off due to the
related alarm.
The AC input voltage or
frequency is not within the range
set.
Circuit breaker or fuse in the
AC-in input is open as a result of
overload.
The battery fuse has blown.
The distortion or the AC input
voltage is too large (generally
generator supply).
Check this table for
appropriate measures in
regard to this alarm state.
Ensure that the AC input is
between 95 VAC and 140 VAC,
and that the frequency is within
the range set (default setting 45-
65Hz).
Remove overload or short circuit
on AC-out, and reset
fuse/breaker.
Replace the battery fuse.
Turn the settings WeakAC and
dynamic current limiter on.