163Maintenance
EN
- Error code
- Error message
- LED status
Name of Alarm and Cause Solution
- E055
- AFDD wrong
conf.
- Yellow LED
Arc Fault board parameter reading error:
Error in the parameter reading by the system.
• 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.