- Error code
- Error message
- Signal
Name of Alarm and Cause Solution
- E028
- Error Meas F
-
Alarm LED
Grid frequency outside of range:
Error in the internal measurement of grid frequency
(set by law) in order 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.
- E029
- Mid Bulk OV
-
Alarm 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
- Error Meas Ileak
-
Alarm LED
High leakage current (DC side):
Error in the internal measurement (made when the
inverter is grid connected) of the leakage current of
the DC side (PV generator) compared to ground (set
by law) in order 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.
- E031
- Error Read V
-
Alarm LED
Output relay damaged:
Measurement of internal voltage on heads of the out-
put relay outside of range. There is too great a differ-
ence 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.
- E032
- Error Read I
-
Alarm LED
Imbalanced output currents:
Measurement of the imbalance in the output voltage
(carried out across the three phases) outside of range
(only in 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.
- E033
- UTH
-
Alarm LED
Low ambient temperature:
Temperature outside the inverter below -25°C
• Wait for the temperatures to which the inverter is exposed to
return to the operating range.
- If the problem persists, contact customer assistance. Remem-
ber to wait the time needed to allow the inverter to warm up
- E034
- Interlock fail
-
Alarm LED
“IGBT” circuitry not ready:
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.
- E035*
- Remote Off
-
Alarm LED
Inverter awaiting “remote ON” command:
The inverter has been switched off remotely (remote
OFF) and remains awaiting the signal which will switch
it back on (Remote ON)
• Switch the inverter back on remotely. If the unit does not
switch back on, disable the remote off/on function and switch
the equipment off completely and subsequently switch it back
on.
- If the problem persists, contact customer assistance.
- E036
- Vout Avg error
-
Alarm LED
Average of the measurements of grid voltage out-
side of range:
The average value of the grid voltage (sampled every 10
minutes) does not fall within the permitted ranges. The
grid voltage in the point connected to the inverter is too
high. This may be caused by too high a grid impedance.
In the nal 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 in-
verter disconnects from the grid
• 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 volt-
age. If the operator authorises a change to the inverter's param-
eters, agree the new limits with customer assistance
E046
- String self test fail
- No LED
Error during the automatic check of the string
voltages (only in models with the “fuse-control”
board):
In some inverter models it is possible to carry out the
check test of the polarity of the strings connected to the
input (e.g.:TRIO-20.0/27.6kW).
This error signal occurs when, during the test stage, an
inverted string is recorded
• 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.
E049
- AC FF Error
-
Alarm LED
Error in the “AC feed-forward” circuit:
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.
E050
- AFDD Activated
-
GFI LED
Arc Fault protection activated:
Possible photovoltaic arc detected on the DC side.
• If it is the rst 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.
E053
- AFDD Fault
-
Alarm LED
Arc Fault board autotest failed:
Problem detected during the AFDD board autotest
phase.
• 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.
E054
- AFDD comm. Fault
-
Alarm LED
Arc Fault board communication error:
Error on the RS485 serial communication detected be-
tween the inverter and the AFDD board.
• 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.
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