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000070CG
8 - Maintenance
- Code on display
- Error message
- Signal
Name of Alarm and Cause
Solution
E056
- Over Temp. (from
external box)
-
Yellow LED
Excessive temperature measured inside the inver-
ter's wiring box:
High internal temperature.
This error relates to the temperature measured on exter-
nal 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
-
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 configura
-
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 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 (once the inverter has been switched off and back
on) 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 notices of messages are shown on the highlighted part b10 of the
display
12
.
The following table gives the complete list of power limitation messages relating to string in-
verters. Some messages may not be used depending on the inverter model installed.
- Message on display
- Signal
Name of Derating and Cause
Solution
- LIMxxx% CODE:00
-
Display symbol
b6
Power limitation:
The message indicates that the user has set an output power
limitation for the inverter.
LIM xxx% = Power reduction percentage
Examples:
LIM 100% = no power limitation
LIM 50% = limitation to 50% of the output nominal power
• Check the limitation value set in the “Settings >
Power Limitation” menu
- LIMxxx% CODE:01
-
Display symbol
b6
Power limitation for over-frequency:
The message indicates that the user has set a power limitation
due to over frequency in order to reduce the maximum output po-
wer of the inverter when the grid frequency exceeds certain limits.
LIM xxx% = Power reduction percentage
Examples:
LIM 100% = no power limitation
LIM 50% = limitation to 50% of the output nominal power
• Check the limitation value set in the “Settings >
Service > OF Derating” menu