24
The error messages below will be displayed on LGES PV Master App or reported by e-mail if an error
occurs.
ERROR
MESSAGE
EXPLANATION
REASON
SOLUTIONS
Utility Loss
Public grid power
is not available
(power lost or
on-grid connection
fails)
Inverter does
not detect the
connection of grid
1. Check (use multi-meter) if AC side
has voltage . Make sure grid power is
available.
2. Make sure AC cables are connected
tightly and well.
3. If all is well, please try to turn off AC
breaker and turn on again in 5 mins.
VAC Failure
Grid voltage is not
within permissible
range
Inverter detects
that AC voltage is
beyond the normal
range required by
the safety country
1. Make sure safety country of the
inverter is set right.
2. Check (use multi-meter) if the AC
voltage (Between L & N) is within a
normal range (also on AC breaker side)
a. If the AC voltage is high, then make
sure the AC cable complies with that
required on user manual and the AC
cable is not too long.
b. If the voltage is low, make sure
the AC cable is connected well and
the jacket of the AC cable is not
compressed into the AC terminal.
3. Make sure the grid voltage of your
area is stable and within normal range.
FAC Failure
Grid frequency
is not within
permissible range
Inverter detects
that the grid
frequency is
beyond the normal
range required by
the safety country
1. Make sure the safety country of the
inverter is set right.
2. If safety country is right, then please
check on the inverter display if AC
frequency (Fac) is within a normal
range.
3. If FAC failure only appears a few
times and is resolved soon, it should
be caused by occasional grid frequency
unstability.
Over
Temperature
Temperature inside
of the inverter is
too high
The inverter's
working
environment
leads to a high
temperature
condition
1. Try to decrease surrounding
temperature.
2. Make sure the installation complies
with the instruction on inverter user
manual.
3. Turn off the inverter.
04 OTHER
4.1 Error Messages.
