- Error code
- Error message
- Signal
Name of Alarm and Cause Solution
E055
- AFDD wrong conf.
-
Alarm 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.
E056
- Over Temp. (from
external box)
-
Alarm LED
Excessive temperature measured inside the invert-
er's wiring box:
High internal temperature.
This error relates to the temperature measured on ex-
ternal boxes (e.g.:TRIO-20.0/27.6kW).
• 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 (once the ambient temperature has returned to
the range) persists, contact customer assistance. Remember
to wait the time needed to allow the inverter to cool down
E057
- Vbulk reading error
-
Alarm 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 in-
verter)
• 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 congura-
tion 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 neces-
sary to contact customer assistance.
E058
- Pin vs Pout check
error
-
Alarm LED
Error in the check of Pin vs Pout:
The error occurs if the difference between the meas-
ured 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.
E077
- Internal Error
-
Alarm LED
Error in the system conguration:
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
-
Alarm 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
-
Alarm LED
Incorrect Phases connection
(Only triphase models) The phases have not been con-
nected correctly to the AC output
• Invert two of the phases of the network wiring to the AC termi-
nal block of the inverter.
E084
- BackFeed OC
-
Alarm LED
Return current to photovoltaic eld:
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 irra-
diation, it must not be considered a problem but a protection
intervention for the photovoltaic eld.
- If the problem occurs with good irradiation conditions, switch
the inverter off and back on again; if the error persists, contact
customer assistance.
Power 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 veried on the Web User Interface
on “Status Summary” section.
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