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- Code on display
- Error message
Name of Alarm and Cause
- Signal
High leakage current (DC side):
Error in the internal measurement (made when the in-
- E030
verter is grid connected) of the leakage current of the
- Error Meas Ileak
DC side (PV generator) compared to ground (set by law)
-
Yellow LED
in order to have a redundant measurement (2 measu-
rements on the same parameter made by two different
circuits)
Output relay damaged:
- E031
Measurement of internal voltage on heads of the output
- Error Read V
relay outside of range. There is too great a difference in
-
Yellow LED
voltage between the input and output of the grid connec-
tion relay.
Imbalanced output currents:
- E032
Measurement of the unbalance in the output voltage
- Error Read I
(made across the three phases) outside of range (only
-
Yellow LED
in triphase models)
- E033
Low ambient temperature:
- UTH
Temperature outside the inverter below -25°C
-
Yellow LED
- E034
"IGBT" circuitry not ready:
- Interlock fail
Error inside the inverter
-
Yellow LED
- E035*
Inverter awaiting "remote ON" command:
- Remote Off
The inverter has been switched off remotely (remote
-
Yellow LED
OFF) and remains awaiting the signal which will switch it
*not visualised on di-
back on (Remote ON)
splay
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
- E036
grid voltage in the point connected to the inverter is too
- Vout Avg error
high. This may be caused by too high a grid impedance.
-
Yellow LED
In the final stage of the timeout, the inverter limits the po-
wer 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 occur only should the "Amorphous" mode
be on. This function is on only in inverters equipped with
- E037
a grounding kit and serves to monitor the voltage at the
- Riso Low
heads of the grounding resistance. The error occurs
-
Red LED
when the voltage at the heads of the resistance con-
nected between ground and the 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 volta-
ges (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 the
-
No LED
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
Solution
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
• 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
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
• Switch back on the inverter 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 (once the Remote ON/OFF function from the di-
splay has been reactivated) persists, contact customer assistan-
ce.
• 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 posi-
tioned 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 gene-
rator 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 (once the inverter has been switched off and back
on) persists, contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
8 - Maintenance
93
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