Fimer PVS-175-TL - Page 172

FIMER_PVS-175-TL A.1 Version_Product manual_EN_RevC-
F
172
- Error code
- Error message
- LED status
Name of Alarm and Cause Solution
- E023
- DC injection
-
Yellow LED
Feeding of direct current to grid outside of range:
The error is generated if the direct component of the
current supplied to the grid exceeds the threshold of
0.5% of the rated operating current.
In any case, the inverter does not stop because of the
E023 error, but tries to connect to the grid again.
The sporadic repetition of the error is a sign of serious
grid distortions or sharp irradiation changes, while
systematic repetition of the error signal will indicate a
breakdown on the inverter
Once the error appears, the inverter attempts to
resume normal operation.
- Should the error occur sporadically, it may be
caused by a brusque transition of the grid voltage or
of the input voltage, but is not due to a malfunction
by the inverter.
- If the error is connected to an internal fault, it will
continue to appear and so it is necessary to contact
customer assistance.
- E024
- Internal error
-
Yellow LED
Error inside the inverter:
Error inside the inverter
• Error inside the inverter and cannot be checked
externally.
- If the problem persists (once the inverter has been
switched off and back on again), contact customer
assistance.
- E025
- Riso Low
-
Red LED
Low value of isolation resistance:
Before connecting to the grid the inverter measures the
isolation resistance of the PV generator compared to
ground. Should the measurement of the isolation
resistance be below 75kOhm, the inverter does not
connect to the grid and shows the “Riso Low” error. The
causes may be:
- Damaged PV panel(s).
- Junction box(es) of the panels not correctly sealed, so
as to permit infiltration by water and/or humidity;
- Problems in connections between panels (not perfectly
fit);
- Poor quality of cable joints;
- Presence in the DC section of unsuitable or damaged
overvoltage surge arresters outside the inverter
(reduced ignition voltage compared to the
characteristics of the strings of the PV generator);
- Presence of humidity inside any junction box
• Measure the isolation resistance using a
megohmmeter positioned in the photovoltaic array
(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 75kOhm, 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 75kOhm and
the error signal persists, contact customer
assistance.
- E026
- Internal error
-
Yellow LED
Internal reference voltage outside of range:
Wrong measurement of reference voltage inside inverter
• Error inside the inverter and cannot be checked
externally.
- If the problem persists (once the inverter has been
switched off and back on again), contact customer
assistance.
- E027
- Internal error
-
Yellow LED
Grid voltage outside of range:
Error in the internal measurement of grid voltage (set by
law) to have a redundant measurement (2
measurements on the same parameter made by two
different circuits)
• Error inside the inverter and cannot be checked
externally.
- If the problem persists (once the inverter has been
switched off and back on again), contact customer
assistance.
- E028
- Internal error
-
Yellow LED
Grid frequency outside of range:
Error in the internal measurement of the grid frequency
(imposed by regulations) to have a measurement
redundancy (2 measurements on the same parameter
carried out by two different circuits).
• Error inside the inverter and cannot be checked
externally.
- If the problem persists (once the inverter has been
switched off and back on again), contact customer
assistance.
- E029
- Mid Bulk OV
-
Yellow LED
Internal overvoltage on the measurement of the “Mid
bulk”:
Error inside the inverter (only triphase models)
• Error inside the inverter and cannot be checked
externally.
- If the problem persists (once the inverter has been
switched off and back on again), contact customer
assistance.
- E030
- Internal error
-
Yellow LED
High leakage current (DC side):
- Error on the internal measurement (performed when
the inverter is connected to the grid) of the DC side (PV
generator) leakage current with respect to ground
(required by regulations) to have a measurement
redundancy (2 measurements of the same parameter
carried out by two independent circuits)
• Error inside the inverter and cannot be checked
externally.
- If the problem persists (once the inverter has been
switched off and back on again), contact customer
assistance.
- E031
- Internal error
-
Yellow LED
Output relay damaged:
Measurement of internal voltage on heads of the output
relay outside of range. There is too great a difference in
voltage between the input and output of the grid
connection relay.
• Error inside the inverter and cannot be checked
externally.
- If the problem persists (once the inverter has been
switched off and back on again), contact customer
assistance.