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001058AG
8 - Maintenance
- Error code
- Error message
- Warning
Name of Alarm and Cause
Solution
E056
- Over Temp. (from
external box)
-
Yellow LED
Excessive temperature measured inside the
inverter's wiring box:
High internal temperature.
This error relates to the temperature measured on
external 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 persists (once the ambient temperature has
returned to within the range), contact customer assistance.
Remember to wait the time needed to allow the inverter to
cool down
E057
- Vbulk reading error
-
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
- Pin vs Pout check
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.
E081
- Internal Error
-
Red LED
Inverter fault / Incomplete inverter closing:
Fault inside the inverter or incomplete inverter closing
(front cover missing or not tightened, cable glands
missing or incorrectly tightened, environmental
protection IP65 not guaranteed)
• If the problem has occurred during the installation phase or
during the inverter maintenance phase (therefore the cover
has been removed or the cable glands have been acted
upon), carry out the following operations:
- Disconnect the AC grid and DC input from the inverter
and check for the front cover and all the cable glands, also
checking their correct tightening to ensure environmental
protection IP65; reconnect the AC grid and the DC input and
attempt to switch the inverter on; if the problem persists,
contact customer assistance :
- If the front cover and all cable glands are present, disconnect
the AC grid and DC input from the inverter and wait 15
minutes at a safe distance, then open the inverter cover and if
no smoke/smell of burning is present, check the integrity of the
components or the presence of moisture or other abnormal
conditions; reconnect the AC grid and DC input and attempt to
switch on the inverter; if the problem persists contact customer
assistance.
• If the problem has occurred after installation or after an
inverter maintenance phase (therefore the cover has NOT
been removed or the cable glands have NOT been acted
upon), disconnect the AC grid and the DC input from the
inverter and contact customer assistance.
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.
E103
- RSD self-test fault
-
Yellow LED
RSD self-test fault:
RSD functionality is damaged
• 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.