- 167 -
000946AG
8 - Maintenance
- Error code
- Error message
- LED status
Name of Alarm and Cause
Solution
E046
- Str. test failed
-
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.
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
- Internal error
-
Yellow 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.
E051
- Safety mem. Fault
-
Yellow LED
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.
E057
- Vbulk reading
-
Yellow LED
Input voltage (Vin) higher than booster voltage
(Vbulk):
The error occurs if the input voltage exceeds the
Bulk voltage (voltage on the DC-DC circuit inside the
inverter)
• 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.
E058
- Internal error
-
Yellow LED
Error in the check of Pin vs Pout:
The error occurs if the difference between the
measured value of input power and that of output
power is greater than the limit imposed internally to
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.
E074
- Internal error
-
Yellow LED
Communication error inside the inverter:
The alarm occurs when there are communication
problems between the control devices 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.
E077
- Internal Error
-
Yellow LED
Error in the system configuration:
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.
E078
- Riso Test fail
-
Yellow LED
Riso test error:
Problem detected during the Riso test 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.
E079
- Wrong Sequence
-
Yellow LED
Incorrect Phases connection
(Only triphase models) The phases have not been
connected correctly to the AC output
• Invert two of the phases of the network wiring to the AC
terminal block of the inverter.
E084
- BackFeed OC
-
Yellow LED
Return current to photovoltaic field:
The error occurs if the input voltage is particularly low
(typically in the evening in conditions of low irradiation)
and indicates a return current from the inverter to the
photovoltaic panels).
If the error occurs in the evening or in conditions of low
irradiation, it must not be considered a problem but a
protection intervention for the photovoltaic field.
- If the error occurs with good irradiation conditions, switch
the inverter off and back on again; if the error persists, contact
customer assistance.
P
ower limitation messages
The equipment can signal possible output power limitations which may
occur on the basis of:
- settings made by the user
- settings required by the grid standard of the country of installation
- protective devices inside the inverter
The limitation messages can only be verified on the Web User Interface
on “Status Summary” section.