- 106 -
000515AG
- Code on display
- Error message
- Signal
Name of Alarm and Cause Solution
- No code
- Ground F
-
Red LED
Ground fault of photovoltaic generator:
The alarm is generated when a leakage current to
ground is detected in the DC section of the system.
• Measure the insulation resistance using a megohmmeter posi-
tioned in the photovoltaic eld (positive terminal short-circuited
at the negative pole) compared to ground. The measurement is
strongly inuenced 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 gen-
erator 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!
-
Yellow LED lamp.
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 “Set-
tings > Service > Accept boards” (refer to the procedure given
in this manual).
- If the signal persists also following the linking of the compo-
nents, 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 displays the “Missing Grid” message when
it does not record output 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 Fail
-
Yellow LED lamp.
Memory fail:
The inverter displays the “Memory Fail” message when
it records 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
-
Green LED lamp.
Waiting Sun:
The inverter displays the “Waiting Sun” message when,
following a W001 and/or W002 notice, 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 suf-
cient irradiation and the correct composition of the system.
- If it exceeds Vstart, contact customer assistance
- W001
- Sun Low
-
Yellow LED
Insufcient irradiation (Low input voltage on
switching on the inverter):
Incorrect conguration of the PV generator or an “on
the limit” conguration 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 suf-
cient irradiation and the correct composition of the system.
- If it exceeds Vstart, contact customer assistance
- W002
- Input UV
-
Yellow LED
Insufcient irradiation (Low input voltage on
switching off):
Incorrect conguration of the photovoltaic generator
or an “on the limit” conguration for the inverter's mini-
mum
input voltage
Check the input voltage on the inverter.
- If it does not exceed Vstart, check for the presence of suf-
c i e n t i r r a d i a t i o n a n d t h e c o r r e c t c o m p o s i t i o n o f t h e s y s t e m .
- 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 nor-
mal 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 (down or up) -
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 in-
verter 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 opera-
tor 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 (in-
verter-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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