- 150 -
000570BG
8 - Maintenance
- Error code
- Error message
- Warning
Name of Alarm and Cause
Solution
- No code
- Ground F
-
Red LED
Ground fault of photovoltaic generator:
The alarm is generated when a ground leakage
current is detected in the DC section of the system.
• Measure the
insulation resistance using a megohmmeter
positioned in the photovoltaic field (positive terminal short-
circuited at the negative pole) compared to ground. The
measurement is strongly influenced by the environmental
conditions, so must be made under the same conditions in
which the error occurred.
- If the value measured is lower than 1 megaohm, a
check must be carried out by a technician/installer on the
photovoltaic generator to identify and eliminate the problem.
- If the value measured is higher than 1 megaohm and the
error signal persists, contact customer assistance.
- No code
- NEW SYSTEM PART
REFUSED!
-
Flashing yellow
LED
Lack of linkage of the new system part:
The components inside the inverter (e.g. display, fuse
board, communication and control board, etc.) are not
inter-linked. This occurs following the replacement of
one of the components inside the inverter.
• Link the components inside the inverter by accessing the
“Settings > Service > Accept boards” (refer to the procedure
given in this manual).
- If the signal persists also following the linking of the
components, contact customer assistance.
- No code
- SET COUNTRY or
NO NATION
-
No LED
SET COUNTRY or NO NATION:
Indicates that in the installation phase the grid
standard was not set on the inverter.
• Set the grid standard of the country of installation following
the instructions given in this manual for the inverter.
- If the signal persists also after the grid standard has been
set, contact customer assistance.
- No code
- Missing Grid
-
Yellow LED
Missing Grid:
The inverter does not detect grid voltage (AC side).
• Check the
grid voltage on the inverter's AC terminal block.
- Should it be absent, check any protection work on the line
and the presence of grid voltage on the supply point.
- No code
- Memory fault
-
Flashing yellow
LED
Memory fault:
The inverter has detected a communication problem
with the memory board on which the inverter saves
the daily value of energy produced.
• Remove the memory board and check the welding of all
the connector's terminals. Subsequently reinsert the memory
board and check that it is correctly inserted into the dedicated
slot
- If the signal persists also following the above checks, contact
customer assistance.
- No code
- Waiting Sun
-
Flashing green
LED
Waiting Sun:
The inverter goes into the “Waiting Sun” stage when,
following a W001 and/or W002 warning, the voltage
from the photovoltaic generator is less than the
activation voltage (Vstart).
• Check the
input voltage on the inverter.
- If it does not exceed Vstart, check for the presence of
sufficient irradiation and the correct composition of the system.
- If it exceeds Vstart, contact customer assistance
- W001
- Sun Low
-
Yellow LED
Insufficient irradiation (Low
input voltage on
switching on the inverter):
Incorrect configuration of the
PV generator or an “on
the limit” configuration for the inverter's minimum
input
voltage.
• Check the
input voltage on the inverter.
- If it does not exceed Vstart, check for the presence of
sufficient irradiation and the correct composition of the system.
- If it exceeds Vstart, contact customer assistance
- W002
- Input UV
-
Yellow LED
Insufficient irradiation (Low
input voltage on
switching off):
Incorrect configuration of the
photovoltaic generator
or an “on the limit” configuration for the inverter's
minimum input voltage.
• Check the
input voltage on the inverter.
- If it does not exceed Vstart, check for the presence of
sufficient irradiation and the correct composition of the system.
- If it exceeds Vstart, contact customer assistance
- W003
- Grid Fail
-
Yellow LED
Parameters of grid voltage outside range:
This error signal occurs when during the inverter's
normal operation the grid parameters exceed the
limits set by the operator:
- Grid voltage absent (after the signal the inverter
goes to "Missing Grid")
- Unstable grid voltage (values too low or too high)
- Unstable grid frequency
• Check the
grid voltage on the inverter.
- Should it be absent, check for absence of grid voltage on the
supply point.
- If, on the other hand, the voltage tends to rise (when the
inverter is connected) there is high line or grid impedance.
• Check the
grid voltage also on the supply.
- If it is high, it means that there is high grid impedance. In
this case, ask the operator to adjust the grid voltage. If the
operator authorises a change to the inverter's parameters,
agree the new limits with customer assistance
- If the voltage at the point of supply is much lower than that
measured on the inverter, it is necessary to adjust the line
(inverter-contactor).
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
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