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- Error code
- Error message
Name of Alarm and Cause
- Warning
Average of the measurements of grid voltage
outside of range:
The average value of the grid voltage (sampled every
10 minutes) does not fall within the permitted ranges.
- E036
The grid voltage in the point connected to the inverter is
- Vout Avg error
too high. This may be caused by a grid impedance that
-
Yellow LED
is too high. In the final stage of the timeout, the inverter
limits the power to check whether the grid voltage
has stabilised into regular parameters. If this does not
happen, the inverter disconnects from the grid
Low value of the insulation resistance (only with
the "Amorphous" mode activated):
This error can appear only if the "Amorphous" mode
is enabled. This function is enabled only in inverters
- E037
equipped with grounding kit and is used to monitor
- Riso Low
the voltage at the ends of the grounding resistor. The
-
Red LED
error appears when the voltage at the ends of the
resistor connected between ground and pole of the
photovoltaic generator exceeds 30V for more than 30
minutes or 120V for more than one second.
Error during the automatic check of the string
voltages (only in models with the "fuse-control"
board):
E046
In some inverter models it is possible to carry out the
- String self test fail
check test of the polarity of the strings connected to
-
No LED
the input (e.g.:TRIO-20.0/27.6kW).
This error signal occurs when, during the test stage,
an inverted string is recorded
E049
Error in the "AC feed-forward" circuit:
- AC FF Error
Error inside the inverter
-
Yellow LED
E050
Arc Fault protection activated:
- AFDD Activated
Possible photovoltaic arc detected on the DC side.
-
Yellow LED
E051
- Safety mem. Fault
Error inside the inverter.
-
Yellow LED
E053
Arc Fault board autotest failed:
- AFDD Fault
Problem detected during the AFDD board autotest
-
Yellow LED
phase.
E054
Arc Fault board communication error:
- AFDD comm. Fault
Error on the RS485 serial communication detected
-
Yellow LED
between the inverter and the AFDD board.
E055
Arc Fault board parameter reading error:
- AFDD wrong conf.
Error in the parameter reading by the system.
Yellow LED
-
Excessive temperature measured inside the
E056
inverter's wiring box:
- Over Temp. (from
High internal temperature.
external box)
This error relates to the temperature measured on
-
Yellow LED
external boxes (e.g.:TRIO-20.0/27.6kW).
Input voltage (Vin) higher than booster voltage
E057
(Vbulk):
- Vbulk reading error
The error occurs if the input voltage exceeds the
Yellow LED
Bulk voltage (voltage on the DC-DC circuit inside the
-
inverter)
- 159 -
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Solution
• Check the grid voltage in the connection point to the inverter.
- If the grid voltage differs from the range due to the conditions
of the distribution grid, 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.
• Check for the presence and correct contact between the
two terminals of the grounding resistance installed inside the
inverter
• 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.
• Section the inverter and check the polarity of the string(s)
which the inverter has recorded as inverted.
- Once all the strings have been correctly connected, activate
the system once again; the inverter will once again check the
correct polarity of the string inputs at the end of which it will
carry out the checks for the grid connection.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
• 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.
• If it is the first time this problem has occurred, press the ESC
button for 5 seconds and wait for the unit to restart.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
• 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.
• 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.
• 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.
• 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.
• Check that the inverter is not exposed to direct sunlight. Wait
for the temperatures to which the inverter is exposed to return
to the operating range and for the inverter to cool down.
- If the problem persists (once the ambient temperature has
returned to within the range), contact customer assistance.
Remember to wait the time needed to allow the inverter to
cool down
• It is necessary to measure the input voltage inside the
inverter with a voltmeter.
- If it is higher than the maximum voltage of the operating
range, the alarm is genuine and it is necessary to check the
configuration of the PV generator. If the voltage has also
exceeded the maximum input threshold the inverter could be
damaged.
- If it is lower than the maximum voltage of the operating
range, the alarm is caused by an internal malfunction and it is
necessary to contact customer assistance.
8 - Maintenance
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