Models

POWER ONE, PVI-STRINGCOMB, PVI-STRINGCOMB-S, PVI-WIND-INTERFACE, PVI-DESKTOP, PVI-2000-IT, PVI-3600-IT, PVI-2000-OUTD-IT, PVI-3600-OUTD-IT, PVI-3.0-OUTD-IT, PVI-3.0-OUTD-S-IT, PVI-3.6-OUTD-IT, PVI-3.6-OUTD-S-IT, PVI-4.2-OUTD-IT, PVI-4.2-OUTD-S-IT, PVI-3.8-I-OUTD, PVI-4.6-I-OUTD, PVI-5000-TL-OUTD, PVI-6000-TL-OUTD, PVI-8.0-TL-OUTD, PVI-10.0-OUTD-IT, PVI-10.0-OUTD-S-IT, PVI-10.0-OUTD-FS-IT, PVI-12.5-OUTD-IT, PVI-12.5-OUTD-S-IT, PVI-12.5-OUTD-FS-IT, UNO-2.0-I-OUTD, UNO-2.5-I-OUTD, UNO-DM-1.2-TL-PLUS, UNO-DM-2.0-TL-PLUS, UNO-DM-3.3-TL-PLUS, UNO-DM-4.0-TL-PLUS, UNO-DM-5.0-TL-PLUS, UNO-DM-6.0-TL-PLUS, PVI-3.0-OUTD-IT-W, PVI-3.6-OUTD-IT-W, PVI-4.2-OUTD-IT-W, PVI-6000-OUTD-W-US, PVI-6000-OUTD-W-IT, PVI-6000-OUTD-W-ES, PVS-10-TL, PVS-12.5-TL, PVS-15-TL, PVS-175-TL, PVS-20-TL, PVS-30-TL, PVS-33-TL, PVS-350-TL, PVS-50-TL, PVS-60-TL, PVS-60-TL-US, TRIO-20.0-TL, TRIO-27.6-TL, TRIO-5.8-TL, TRIO-7.5-TL, TRIO-8.5-TL, TRIO-50.0-TL-OUTD, TRIO-60.0-TL-OUTD, PVi-CENTRAL-50-IT, PVI-CENTRAL-100-IT, PVI-CENTRAL-100-TL-IT, PVI-CENTRAL-150-IT, PVI-CENTRAL-150-TL-IT, PVI-CENTRAL-200-IT, PVI-CENTRAL-200-TL-IT, PVI-CENTRAL-250-IT, PVI-CENTRAL-250-TL-IT, PVI-CENTRAL-300-IT, PVI-CENTRAL-300-TL-IT, PVI-55.0, PVI-110.0, PVI-165.0, PVI-220.0, PVI-275.0, PVI-330.0, PVI-CENTRAL 250, PVI-CENTRAL 300, PRO-33.0-TL-OUTD,3I19, 3M04, 3M05, 3L07,3M67.

1. Error Code: None
- Error Message: Ground F
- Indicator: Red LED
- Description: Earth fault in the photovoltaic generator. The alarm is generated when a leakage current to earth is detected in the DC section of the system.
- Solution: Measure the insulation resistance using a megohmmeter placed between the photovoltaic field (positive terminal short-circuited to the negative pole) relative to the ground. The measurement is strongly influenced by environmental conditions and must be carried out under the same conditions in which the error occurred. If the measured value is less than 1 megaohm, a technician/installer must check the photovoltaic generator to identify and eliminate the problem. If the measured value is more than 1 megaohm and the error indication continues to be present, contact customer service.

2. Error Code: None
- Error Message: NEW COMPONENT REJECTED!
- Indicator: Blinking yellow LED
- Description: Failed association of the new component. The internal components of the inverter (e.g., display, fuse card, communication and control card, etc.) are not associated with each other. This condition occurs following the replacement of one of the internal components of the inverter.
- Solution: Associate the internal components of the inverter by accessing the menu "Settings > Service > Accept boards" (refer to the procedure reported in this manual). If the error signal continues to be present after the association, contact customer service.

3. Error Code: None
- Error Message: SET COUNTRY or NO NATION
- Indicator: No LED
- Description: Indicates that the network standard was not set on the inverter during installation.
- Solution: Set the network standard of the installation country following the instructions in the inverter manual. If the error persists after setting the network standard, contact customer service.

4. Error Code: None
- Error Message: Vac absent
- Indicator: Yellow LED
- Description: The inverter does not detect the network voltage (AC side).
- Solution: Check the network voltage on the AC terminal block of the inverter. If it is absent, check for any protective devices on the line and the presence of network voltage at the supply point.

5. Error Code: None
- Error Message: Mem. faulty
- Indicator: Blinking yellow LED
- Description: Memory fault. The inverter detected a communication problem with the memory card where it daily saves the daily energy value produced.
- Solution: Remove the memory card and check the correct soldering of all connector terminals. Then reinsert the memory card and ensure it is correctly inserted into its counterpart. If the error signal continues to be present after these checks, contact customer service.

6. Error Code: None
- Error Message: Waiting for the sun
- Indicator: Blinking green LED
- Description: The inverter enters the "waiting for sun" phase when, following a W001 and/or W002 signal, the voltage from the photovoltaic generator is lower than the activation voltage (Vstart).
- Solution: Check the input voltage to the inverter. If it does not exceed Vstart, check for sufficient irradiation and the correct composition of the system. If it exceeds Vstart, contact customer service.

7. Error Code: W001 ,W 001
- Error Message: Sun Low
- Indicator: Yellow LED
- Description: Insufficient irradiation (Low input voltage during inverter startup): Incorrect configuration of the PV generator or a configuration "on the edge" regarding the minimum input voltage of the inverter.
- Solution: Check the input voltage to the inverter. If it does not exceed Vstart, check for sufficient irradiation and the correct composition of the system. If it exceeds Vstart, contact customer service.

8. Error Code: W002 ,W 002
- Error Message: Input UV
- Indicator: Yellow LED
- Description: Insufficient irradiation (Low input voltage during shutdown).
- Solution: Check the input voltage to the inverter. If it does not exceed Vstart, check for sufficient irradiation and the correct composition of the system. If it exceeds Vstart, contact customer service.

9. Error Code: W003 ,W 003
- Error Message: Grid Fail
- Indicator: Yellow LED
- Description: Network voltage parameters out of range. This error occurs when, during the normal operation of the inverter, the network parameters go beyond the limits set by the manager: absence of network voltage, unstable network voltage (low or high), unstable network frequency.
- Solution: Check the network voltage on the inverter. If absent, check the absence of network voltage at the supply point. If the voltage tends to rise (when the inverter is connected), there are high line or network impedances. Check the network voltage at the supply too: if high, it means there is a high network impedance and an adjustment of the network voltage should be requested from the manager. If the voltage and frequency of the network fall within the limits (even when the inverter is connected to the network), contact customer service. All required repair kits and additional support for this issue can be found at: https://solarparts.eu/pages/e031-error-solutions.
10. Error Code: W004, W 004
- Error Message: Grid OV
- Indicator: Yellow LED
- Description: Network overvoltage. This error occurs when, during the normal operation of the inverter, the network voltage exceeds the maximum limit set by the manager.
- Solution: Check the network voltage on the inverter. If the voltage tends to rise (when the inverter is connected), there are high line or network impedances. Check the network voltage at the supply too: if high, it means there is a high network impedance and an adjustment of the network voltage should be requested from the manager. If the voltage at the supply point is much lower than the voltage measured on the inverter, it is necessary to adjust the line (inverter-meter). If the voltage and frequency of the network fall within the limits (even when the inverter is connected to the network), contact customer service.

11. Error Code: W005, W 005
- Error Message: Grid UV
- Indicator: Yellow LED
- Description: Network undervoltage. This error occurs when, during the normal operation of the inverter, the network voltage exceeds the minimum limit set by the manager.
- Solution: Check the network voltage on the inverter. Check the network voltage at the supply too: if high, it means there is a high network impedance and an adjustment of the network voltage should be requested from the manager. If the voltage and frequency of the network fall within the limits (even when the inverter is connected to the network), contact customer service.

12. Error Code: W006, W 006
- Error Message: Grid OF
- Indicator: Yellow LED
- Description: Network overfrequency. This error occurs when, during the normal operation of the inverter, the network frequency exceeds the maximum limit set by the manager.
- Solution: Check the network frequency on the inverter. Check the network frequency at the supply too: if the voltage and frequency of the network fall within the limits (even when the inverter is connected to the network), contact customer service.

13. Error Code: W007, W 007
- Error Message: Grid UF
- Indicator: Yellow LED
- Description: Network underfrequency. This error occurs when, during the normal operation of the inverter, the network frequency exceeds the minimum limit set by the manager.
- Solution: Check the network frequency on the inverter. Check the network frequency at the supply too: if the voltage and frequency of the network fall within the limits (even when the inverter is connected to the network), contact customer service.

14. Error Code: W009, W 009
- Error Message: Empty Table
- Indicator: Yellow LED
- Description: Characterization table of the wind generator not filled (only WIND models).
- Note: This error is specific to WIND models.

15. Error Code: W010, W 010
- Error Message: Fan faulty!
- Indicator: Blinking yellow LED
- Note: Not displayed on the display
- Description: This error occurs in the presence of a malfunction of the internal fan(s) of the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the alarm should persistently repeat, contact customer service.

16. Error Code: W011, W 011
- Error Message: Bulk UV
- Indicator: Yellow LED
- Description: Low "Bulk" voltage (DC-DC circuit). This alarm (which is a warning, not an error) is generated when the voltage across the bulk capacitors does not reach the threshold for the inverter operation (an internal unmodifiable threshold).
- Solution: Raise the activation voltage (Vstart) value to have sufficient power from the PV generator at the time of network connection of the inverter. Check the input voltage to the inverter. If it does not exceed Vstart, check for sufficient irradiation and the correct composition of the system. If it exceeds Vstart, contact customer service.


17. Error Code: W012, W 012
- Error Message: Batt. Discharged
- Indicator: Blinking yellow LED
- Note: Not displayed on the display
- Description: Battery discharged. The inverter has detected too low a buffer battery voltage.
- Solution: Verify that the date/time are set correctly, and if not, set them. Then, completely turn off the inverter (both AC and DC side) and wait a few minutes. Finally, restart the inverter and check if the date/time are still correctly set or if they are reset to 01/01/2000. In this case, replace the battery with the inverter completely turned off (disconnect AC and DC side), paying attention to the polarity.

18. Error Code: W013, W 013
- Error Message: Clock faulty
- Indicator: Blinking yellow LED
- Note: Not displayed on the display
- Description: The alarm occurs when there is a difference of more than 1 minute in the time displayed or through the advanced configuration software compared to the internal time of the microprocessors, indicating a malfunction of the clock circuit.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the alarm should persistently repeat, contact customer service.

19. Error Code: W015, W 015
- Error Message: Island Detect.
- Indicator: Yellow LED
- Description: Disconnection for Anti-Islanding. The inverter was erroneously connected to an island network.
- Solution: Verify that the network to which the inverter is connected is not an island network. If the network to which the inverter is connected is not an island network, turn off and then turn on the inverter. If the error persists, contact customer service.

20. Error Code: W017, W 017
- Error Message: String Err.
- Indicator: Blinking yellow LED
- Note: Only for models with monitored string fuses
- Description: Error detected in the measurement of string currents: String protection fuse(s) damaged.
- Solution: Check the status of the fuses (located on the fuse cards) with a multimeter. If one or more fuses are open, replace them and verify that the input current on the string(s) does not exceed the rating of the fuses. If no string fuses are damaged and the inverter continues to display the alarm message, check if the settings made through the Aurora Manager software are correct (presence or absence of one or more input strings).

21. Error Code: W018, W 018
- Error Message: SPD DC Err
- Indicator: Blinking yellow LED
- Note: Only for models with monitored SPDs
- Description: Operation of the surge protectors on the DC side: Surge protectors placed on the DC side are damaged.
- Solution: Observe the inspection window present on each surge protector (DC side). If it is red, the surge protector is damaged and the cartridge needs to be replaced. If the alarm status continues to be present even though all surge protectors have a green inspection window, contact customer service.

22. Error Code: W019, W 019
- Error Message: SPD AC Err
- Indicator: Blinking yellow LED
- Note: Only for models with monitored SPDs
- Description: Operation of the surge protectors on the AC side: Surge protectors placed on the AC side are damaged.
- Solution: Observe the inspection window present on each surge protector (AC side). If it is red, the surge protector is damaged and the cartridge needs to be replaced. If the alarm status continues to be present even though all surge protectors have a green inspection window, contact customer service.

23. Error Code: W021, W 021
- Error Message: P-reductionStart
- Indicator: No LED

- Note: Not displayed on display
- Description: Activation of power reduction: Indicates that a power limitation has been activated among those described in the “Power limitation messages” section.
- Solution: Verify which power limitation code is active and based on that, carry out the necessary checks which may be related to various factors including user settings, high network frequency, high network voltage, anti-islanding, low network voltage, high internal temperature, high input voltage.

24. Error Code: W022, W 022
- Error Message: Reactive power mode changed
- Indicator: No LED
- Note: Not displayed on display
- Description: Change in reactive power management mode; such a change can be made via display or advanced configuration software.
- Solution: The change in the reactive power management mode is carried out directly by the customer/installer and does not constitute an error. The information is only saved in the event history stored by the inverter.

25. Error Code: W023, W 023
- Error Message: date/time changed
- Indicator: No LED
- Note: Not displayed on display
- Description: Change of date and time of the inverter; such a change can be made via display or advanced configuration software.
- Solution: The change of the internal date and time of the inverter is carried out directly by the customer/installer and does not constitute an error. The information is only saved in the event history stored by the inverter.

26. Error Code: W024, W 024
- Error Message: Energy data reset
- Indicator: No LED
- Note: Not displayed on display
- Description: Reset of energy statistics data stored in the EEPROM: Reset of energy data saved internally in the inverter; this operation can be performed via display or advanced configuration software.
- Solution: The resetting of the partial energy values stored by the inverter is carried out directly by the customer/installer and does not constitute an error. The information is only saved in the event history stored by the inverter. The signal may also appear in the event of replacing the Memory Card where production statistical data are saved.

27. Error Code: W025, W 025
- Error Message: P-reductionEnd
- Indicator: No LED
- Note: Not displayed on display
- Description: Deactivation of power reduction: Indicates the inverter has exited the state of power limitation among those described in the “Power limitation messages” section. This type of signal does not require any verification.

28. Error Code: W026, W 026
- Error Message: AFDD user reset
- Indicator: No LED
- Note: Not displayed on display
- Description: Manual reset of the Arc Fault error; such an operation can be performed via display or advanced configuration software.
- Solution: The reset of the Arc Fault error is carried out directly by the customer/installer and does not constitute an error. The information is only saved in the event history stored by the inverter.

29. Error Code: W027, W 027
- Error Message: Latch-Manual reset
- Indicator: No LED
- Note: Not displayed on display
- Description: Reset of Latch alarm conditions: Manual reset of Latch alarm conditions; such an operation can be performed via display or advanced configuration software.
- Solution: The reset of the Latch alarm conditions is carried out directly by the customer/installer and does not constitute an error. The information is only saved in the event history stored by the inverter.

30. Error Code: W030, W 030
- Error Message: Energy Meter ERROR
- Indicator: No LED
- Note: “METER COM. ERR.” displayed on display in general information (cyclic screens)
- Description: Communication problem with METER device: Error detected on the RS485 serial communication line between the inverter and the energy meter (METER).
- Solution: Check the connections of the serial communication line between the inverter and the METER. In particular, verify the correspondence of the signals, the correct installation of the conductors, and that there are no interruptions on the cables. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

31. Error Code: W031, W 031
- Error Message: BMS fault
- Indicator: No LED
- Note: “BMS COM. ERR.” displayed on display in general information (cyclic screens)
- Description: Communication problem with the battery unit: Error detected on the internal communication line between the inverter unit and the battery unit.
- Solution: Check the connections of the serial communication line between the inverter unit and the battery unit. In particular, verify the correct installation of the connectors and that there are no interruptions in the wiring connecting the two units. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

32. Error Code: W036, W 036
- Error Message: Batt. 1 - W
- Indicator: No LED
- Description: Internal problem with battery unit 1: Internal problem with the battery unit. This condition may be transient with automatic restoration at the end of the alarm condition.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

33. Error Code: W037, W 037
- Error Message: Batt. 1 - F1
- Indicator: No LED
- Description: Internal error with battery unit 1: Internal problem with the battery unit. This condition may be transient with automatic restoration at the end of the alarm condition.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

34. Error Code: W039, W 039
- Error Message: Batt. 2 - W
- Indicator: No LED
- Description: Internal problem with battery unit 2: Internal problem with the battery unit. This condition may be transient with automatic restoration at the end of the alarm condition.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

35. Error Code: W040, W 040
- Error Message: Batt. 2 - F1
- Indicator: No LED
- Description: Internal error with battery unit 2: Internal problem with the battery unit. This condition may be transient with automatic restoration at the end of the alarm condition.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

36. Error Code: W042, W 042
- Error Message: Batt. 3 - W
- Indicator: No LED
- Description: Internal problem with battery unit 3: Internal problem with the battery unit. This condition may be transient with automatic restoration at the end of the alarm condition.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

37. Error Code: W043, W 043
- Error Message: Batt. 3 - F1
- Indicator: No LED
- Description: Internal error with battery unit 3: Internal problem with the battery unit. This condition may be transient with automatic restoration at the end of the alarm condition.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

38. Error Code: W045, W 045
- Error Message: Sys disconnected
- Indicator: Yellow LED
- Description: System disconnection from the network: Signaling of the system's disconnection from the electrical network (in the absence of DC input voltage) due to a discharged battery pack or lack of demand from domestic loads.
- Solution: Verify that, at the time the signal occurs, the battery pack is discharged and/or there are no energy demands from domestic loads for more than 10 minutes.

39. Error Code: W046, W 046
- Error Message: Grid conn. fault
- Indicator: Yellow LED
- Description: Network connection failed: The alarm is recorded when an error of Vac absent or Input UV occurs or due to the manual disconnection of the inverter during the network connection sequence.
- Solution: Once the error occurs, the inverter tries to resume normal operation. If the error signal continues to be present after several attempts to connect the inverter, turn off and then turn on the inverter. If the problem persists, contact customer service.

40. Error Code: W047, W 047
- Error Message: Update Incomplete
- Indicator: Yellow LED
- Description: Firmware update failed: The alarm occurs when a firmware update is not completed.
- Solution: Complete any pending firmware updates. If the problem persists after completing the firmware updates, turn off and then turn on the inverter. If the problem persists, contact customer service.

41. Error Code: W048, W 048
- Error Message: Periodic GridOff
- Indicator: Yellow LED
- Description: Automatic disconnection from the network due to a time limit: If the inverter exceeds the network connection time limit set by the network standard, it must automatically disconnect and reconnect to the network to perform the Riso test.
- Solution: The presence of this alarm does not constitute an error, as the automatic disconnection is required by safety regulations. If the inverter disconnects in a shorter time than expected, contact customer service.

42. Error Code: W049, W 049
- Error Message: Global-Settings Event
- Indicator: No LED
- Note: Not displayed on display
- Description: Change of the network standard: Change of the network standard set on the inverter; such a change can be made via display or advanced configuration software.
- Solution: The change of the network standard set on the inverter is carried out directly by the customer/installer and does not constitute an error. The information is only saved in the event history stored by the inverter.

43. Error Code: W051, W 051
- Error Message: Exit from Stand Alone connection
- Indicator: Yellow LED
- Description: Exit from Stand Alone mode: The alarm is recorded when the “Stand Alone” mode is deactivated, or the inverter reconnects to the network (visible only if the Stand Alone accessory card is installed).
- Solution: The deactivation of Stand Alone mode is carried out directly by the customer/installer or automatically by the inverter and does not constitute an error.

44. Error Code: W053, W 053
- Error Message: SOH Low
- Indicator: Blinking yellow LED
- Note: “Bat. Warn-SOH_L” displayed in general information (cyclic screens)
- Description: Low State of Health (SOH) of the battery pack: Indicates that the SOH level of the battery pack (during normal operation) is close to the unusability threshold. The alarm is displayed for SOH values between 51 and 60%.
- Solution: Indicates that the battery's useful life is about to end as for SOH values below 50%, the battery should be replaced.

45. Error Code: W054, W 054
- Error Message: SOH Low (Fault)
- Indicator: Blinking yellow LED
- Note: “Bat. Fault-SOH_L” displayed in general information (cyclic screens)
- Description: Battery pack blocked due to low State of Health (SOH): Indicates that the SOH level of the battery pack (during normal operation) is below the usability threshold. The alarm is displayed for SOH values below 50%.
- Solution: Indicates that the battery's useful life has ended and must be replaced.

46. Error Code: W055, W 055
- Error Message: Battery Low (0%)
- Indicator: No LED
- Note: “SOC LOW” displayed on display in general information (cyclic screens)
- Description: Low State of Charge (SOC) of the battery pack: Indicates that the battery is completely discharged.
- Solution: Where permitted by the installation country's regulations, it is advisable to force the battery recharge using the electrical network (AC charging). Otherwise, there should be good energy production and low consumption from domestic loads to charge the battery (DC charging).

47. Error Code: W056, W 056
- Error Message: Power Engage
- Indicator: Yellow LED
- Note: “CHECK BATT CABLE” displayed in general information (cyclic screens)
- Description: Problem with the power connection cables of the battery pack: Error detected in the power cables between the inverter unit and the battery unit.
- Solution: Check the connections of the power line between the inverter unit and the battery unit. In particular, verify the correct installation of the connectors and that there are no interruptions in the wiring connecting the two units. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

48. Error Code: W058, W 058
- Error Message: System Frozen
- Indicator: Yellow LED
- Description: Converter in a locked state: Lock of the converter linked to an installation phase for which there are still no conditions for starting and connecting to the network.
- Solution: Complete the commissioning phase of the inverter. If the problem (once the commissioning phase is completed and the inverter is turned off and then turned back on) persists, contact customer service.

49. Error Code: W059, W 059
- Error Message: Output power Overload
- Indicator: Yellow LED
- Description: Overload on the Stand Alone output: The alarm occurs when there is excessive power demand from the network with the inverter in “Stand Alone” mode (visible only if the Stand Alone accessory card is installed).
- Solution: Disconnect one or more loads from the Stand Alone output. If the problem (once all loads are disconnected and the inverter is turned off and then turned back on) persists, contact customer service.

50. Error Code: W060, W 060
- Error Message: COMMISSIONING - SOH test - Warning
- Indicator: No LED
- Note: “Bat. Warn-SOH_L” displayed on display in general information (cyclic screens)
- Description: Low State of Health (SOH) of the battery pack during the system commissioning phase: Indicates that the SOH level of the battery pack (during the commissioning phase of the system) is close to the unusability threshold. The alarm is displayed for SOH values between 51 and 60%.
- Solution: Indicates that the battery's useful life is about to end as for SOH values below 50%, the battery should be replaced.

51. Error Code: W061, W 061
- Error Message: COMMISSIONING - SOH test - Fault
- Indicator: No LED
- Note: “Bat. Fault-SOH_L” displayed on display in general information (cyclic screens)
- Description: Battery pack blocked due to low State of Health (SOH) during the system commissioning phase: Indicates that the SOH level of the battery pack (during the commissioning phase of the system) is below the usability threshold. The alarm is displayed for SOH values below 50%.
- Solution: Indicates that the battery's useful life has ended and must be replaced.

52. Error Code: W062, W 062
- Error Message: BMS Shutdown err
- Indicator: No LED
- Description: Battery disconnection not occurred: Failure to disconnect the battery pack (through the internal disconnection devices of the system) following a command (automatic or manual).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

53. Error Code: W063, W 063
- Error Message: Force Grid Disconnection for SA Request
- Indicator: Yellow LED
- Description: Forced disconnection from the network: The inverter disconnects from the network following a command to enter stand-alone mode.
- Solution: This signal is not an error but a message informing that the inverter has been forced to disconnect from the network to enter stand-alone mode.

54. Error Code: W064, W 064
- Error Message: Battery Firmware Update Failed
- Indicator: Blinking yellow LED
- Note: “BMS FW UPDT ERR.” displayed on display in general information (cyclic screens)
- Description: Battery unit firmware update failed: Indicates that the firmware update of the battery unit has failed.
- Solution: Perform the firmware update procedure of the battery unit again. If the error signal is displayed again, contact customer service to verify the compatibility of the new firmware.

55. Error Code: E001, E 001
- Error Message: Input OC
- Indicator: Yellow LED
- Description: Input overcurrent (photovoltaic generator): The alarm occurs when the input current of the inverter exceeds the maximum input current threshold of the inverter.
- Solution: Check if the composition of the PV generator allows an input current that exceeds the maximum threshold allowed by the inverter and that the configuration of the inputs (independent or parallel) is carried out correctly. If both checks are positive, contact customer service.

56. Error Code: E002, E 002
- Error Message: Input OV
- Indicator: Yellow LED
- Description: Input overvoltage (photovoltaic generator): The alarm is generated when the input voltage (from the PV generator) exceeds the maximum input voltage threshold of the inverter. The alarm intervenes before reaching the absolute threshold beyond which the inverter gets damaged. When the inverter's input voltage exceeds the Over Voltage threshold, the inverter does not start due to the generation of the alarm.
- Solution: It is necessary to measure the internal input voltage to the inverter with a voltmeter. If it is higher than the maximum operating range, the alarm is real 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 operating range, it is an alarm induced by an internal malfunction and it is necessary to contact customer service.

57. Error Code: E003, E 003
- Error Message: No Parameters
- Indicator: Yellow LED
- Description: DSP initialization error: The main microcontroller is unable to correctly initialize the two DSPs (booster stage and inverter stage). The error is caused by communication problems on the internal bus of the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

58. Error Code: E004, E 004
- Error Message: Bulk OV
- Indicator: Yellow LED
- Description: Overvoltage of "Bulk" (DC-DC circuit): Internal error to the inverter. The alarm is raised when the voltage across the bulk capacitors exceeds the Over Voltage threshold (an internal unmodifiable threshold).
- Solution: The alarm can be caused by external causes to the inverter: Excessive input voltage can be detected as a bulk overvoltage condition. In this case, it is advisable to check the inverter's input voltage and if this value is close to the OV threshold of the input, review the configuration of the PV generator. Excessive network voltage might cause the bulk voltage to rise uncontrollably, resulting in the protection intervention and the generation of the alarm. In these cases, the alarm is transient and the inverter restarts automatically. The alarm can also be caused by internal causes to the inverter, and in this case, it is necessary to contact customer service.

59. Error Code: E005, E 005
- Error Message: Comm.Error
- Indicator: Yellow LED
- Description: Internal communication error in the inverter: The alarm occurs when there are communication problems between the internal control devices of the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.:

60. Error Code: E006, E 006
- Error Message: Output OC
- Indicator: Yellow LED
- Description: Output overcurrent: The alarm occurs when the output current of the inverter exceeds the maximum output current threshold of the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

61. Error Code: E007, E 007
- Error Message: IGBT Sat
- Indicator: Yellow LED
- Description: Saturation detected in the IGBT components: The alarm occurs when one of the active devices of the inverter is in a state of saturation. The inverter attempts to resume normal operation once the error occurs.
- Solution: If the error occurs sporadically, it may be induced by a sudden transition in network voltage or input voltage but is not attributable to a malfunction of the inverter. If the error is related to an internal fault, it will continue to occur and customer service should be contacted.

62. Error Code: E009, E 009
- Error Message: Internal error
- Indicator: Yellow LED
- Description: Internal error in the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

63. Error Code: E010, E 010
- Error Message: Bulk Low
- Indicator: Yellow LED
- Description: Low "Bulk" voltage (DC-DC circuit): The alarm may be caused by external causes to the inverter: a reduced inverter input voltage (slightly higher than the activation voltage) but not accompanied by sufficient power availability from the photovoltaic generator (typical condition in phases with poor irradiation).
- Solution: If the error signal appears sporadically, it can be attributed to external causes to the inverter (poor irradiation and therefore low power availability from the PV generator). If the problem systematically appears even in conditions of high irradiation and with an input voltage significantly higher than the activation voltage, contact customer service.

64. Error Code: E011, E 011
- Error Message: Ramp Fail
- Indicator: Yellow LED
- Description: High ramp-up time of the "Booster": Internal error to the inverter related to the ramp-up time of the DC-DC circuit part (Booster).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

65. Error Code: E012, E 012
- Error Message: DcDc Fail
- Indicator: Yellow LED
- Description: Error in the "Booster" circuit part (DC-DC side) detected by the "Inverter" circuit part (DC-AC side): Internal error to the inverter related to the operation of the DC-DC circuit part (Booster).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

66. Error Code: E013, E 013
- Error Message: Wrong Mode
- Indicator: Yellow LED
- Description: Incorrect configuration of inputs (set in parallel instead of independent): The alarm is generated only when the inverter is configured with parallel inputs. In this particular configuration, the inverter checks the input voltage of each of the two channels, and if the two voltages differ from each other by more than 20Vdc, the alarm is raised.
- Solution: Verify that the "IN MODE" switch setting is intentionally set to "PAR" and that jumpers have been inserted between the two input channels. If the inverter configuration is correct, check that the input strings have the same number of panels in series, of the same brand, and with the same inclination/orientation. If both the inverter configuration and the characteristics of the PV generator conform to the specifications, contact customer service.

67. Error Code: E014, E 014
- Error Message: Over Temp.
- Indicator: Yellow LED
- Description: Internal overtemperature in the inverter: External temperature above 60°C. This parameter also depends on the power that the inverter must deliver, as the temperature measurement is performed internally and is influenced by the heat dissipated by the inverter's components.
- Solution: Verify 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 is back within the range, contact customer service. Remember to wait the necessary time to allow the inverter to cool down.

68. Error Code: E015, E 015
- Error Message: Bulk Cap Fail
- Indicator: Yellow LED
- Description: Fault detected in the "Bulk" capacitors: Internal error to the inverter related to a problem in the bulk capacitors.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

69. Error Code: E016, E 016
- Error Message: Inverter Fail
- Indicator: Yellow LED
- Description: Error in the "Inverter" circuit part (DC-AC side) detected by the "Booster" circuit part (DC-DC side): The alarm is generated when a problem is detected in the inverter circuit part (DC/AC).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

70. Error Code: E017, E 017
- Error Message: Start Timeout
- Indicator: Yellow LED
- Description: High ramp-up time of the "Inverter": Internal error to the inverter related to the ramp-up time of the DC-AC circuit part (Inverter). The alarm may be caused by external causes to the inverter: a reduced inverter input voltage (slightly higher than the activation voltage) but not accompanied by sufficient power availability from the photovoltaic generator (typical condition in phases with poor irradiation).
- Solution: If the error signal appears sporadically, it can be attributed to external causes to the inverter (poor irradiation and therefore low power availability from the PV generator). If the problem systematically appears even in conditions of high irradiation and with an input voltage significantly higher than the activation voltage, contact customer service.

71. Error Code: E018, E 018
- Error Message: Ground Fault
- Indicator: Red LED
- Description: High leakage current measured on the DC side (photovoltaic generator): The alarm is generated when, during normal operation of the inverter, a leakage current to earth is detected in the DC section of the system. It is also possible that the inverter generates the E018 alarm message for AC leakage currents related to the capacitive nature of the photovoltaic generator relative to the ground.
- Solution: Perform a measurement of the insulation resistance using a megohmmeter placed between the photovoltaic field (positive terminal short-circuited to the negative pole) relative to the ground. The measurement is strongly influenced by environmental conditions and must be carried out under the same conditions in which the error occurred. If the measured value is less than 1 megaohm, a technician/installer must check the photovoltaic generator to identify and eliminate the problem. If the measured value is more than 1 megaohm and the error indication continues to be present, contact customer service.

72. Error Code: E019, E 019
- Error Message: Ileak sens.fail
- Indicator: Yellow LED
- Description: Failure of the test on the leakage current measurement sensor (DC side): Before connecting to the network, the inverter performs a self-test involving the leakage current sensor. The test is carried out by "forcing" a known value current in the leakage current sensor, and the microprocessor compares the read value with the known value. The error is generated if the comparison between the read value and the known value during the test does not fall within the allowed tolerance.
- Solution: This is an internal error to the inverter and cannot be externally verified. The alarm is only manifested before the network connection. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

73. Error Code: E020, E 020
- Error Message: Self Test Error 1
- Indicator: Yellow LED
- Description: Failure of the test on the "Booster" relay (DC-DC circuit): Before connecting to the network, the inverter performs internal tests. One of these tests concerns the correct functioning of the booster relay. The test is carried out by "forcing" the switching of the relay and verifying its functionality. The error is generated if a problem is detected in the operation of the relay.
- Solution: This is an internal error to the inverter and cannot be externally verified. The alarm is only manifested before the network connection. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

74. Error Code: E021, E 021
- Error Message: Self Test Error 2
- Indicator: Yellow LED
- Description: Failure of the test on the "Inverter" relay (DC-AC circuit): Before connecting to the network, the inverter performs internal tests. One of these tests concerns the correct functioning of the inverter relay. The test is carried out by "forcing" the switching of the relay and verifying its functionality. The error is generated if a problem is detected in the operation of the relay.
- Solution: This is an internal error to the inverter and cannot be externally verified. The alarm is only manifested before the network connection. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service. All required repair kits and additional support for this issue can be found at: https://solarparts.eu/pages/e031-error-solutions.

75. Error Code: E022, E 022
- Error Message: Self Test Error 4
- Indicator: Yellow LED
- Description: Timeout of the tests carried out on the internal relays of the inverter: Execution time of the self-test carried out on relays of the DC-AC circuit part (inverter) too high. It may indicate a problem related to the aforementioned relays.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

76. Error Code: E023, E 023
- Error Message: DC inj error
- Indicator: Yellow LED
- Description: Direct current injection into the network out of range: The error is generated if the direct current component of the current fed into the network exceeds 0.5% of the nominal operating current. The inverter does not lock up due to the E023 error but tries to reconnect to the network again. Sporadic repetition of the error indicates strong network distortions or abrupt changes in irradiation, while systematic repetition of the error signal will indicate a fault in the inverter.
- Solution: If the error occurs sporadically, it may be induced by a sudden transition in network voltage or input voltage but is not attributable to a malfunction of the inverter. If the error is related to an internal fault, it will continue to occur and contact customer service. All required repair kits and additional support for this issue can be found at: https://solarparts.eu/pages/e031-error-solutions.

77. Error Code: E024, E 024
- Error Message: Internal error
- Indicator: Yellow LED
- Description: Internal error in the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

78. Error Code: E025, E 025
- Error Message: Riso Low
- Indicator: Yellow LED
- Note: Not displayed on display
- Description: Low insulation resistance value: Before connecting to the network, the inverter measures the insulation resistance of the PV generator relative to the ground. If the insulation resistance measurement is lower than 1Mohm, the inverter does not connect to the network and displays the “Riso Low” error. Possible causes include damaged PV panels, junction boxes of panels not correctly sealed, problems in panel connections, poor quality cable junctions, presence of external surge protectors to the inverter not suitable or damaged, and presence of moisture inside the possible field panel.
- Solution: Perform a measurement of the insulation resistance using a megohmmeter placed between the photovoltaic field (positive terminal short-circuited to the negative pole) relative to the ground. If the measured value is less than 1 megaohm, a technician/installer must check the photovoltaic generator to identify and eliminate the problem. If the measured value is more than 1 megaohm and the error indication continues to be present, contact customer service.

79. Error Code: E026, E 026
- Error Message: Vref Error
- Indicator: Yellow LED
- Description: Internal reference voltage out of range: Erroneous measurement of the internal reference voltage in the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

80. Error Code: E027, E 027
- Error Message: Error Meas V
- Indicator: Yellow LED
- Description: Network voltage out of range: Error in the internal measurement of the network voltage (set by regulation) to have redundancy in the measurement (2 measurements on the same parameter carried out by two different circuits).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

81. Error Code: E028, E 028
- Error Message: Error Meas F
- Indicator: Yellow LED
- Description: Network frequency out of range: Error in the internal measurement of the network frequency (set by regulation) to have redundancy in the measurement (2 measurements on the same parameter carried out by two different circuits).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

82. Error Code: E029, E 029
- Error Message: Mid Bulk OV
- Indicator: Yellow LED
- Description: Overvoltage on the internal measurement of the “Mid bulk”: Internal error to the inverter (only for three-phase models).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

83. Error Code: E030, E 030
- Error Message: Error Meas Ileak
- Indicator: Yellow LED
- Description: High leakage current (DC side): Error in the internal measurement (carried out when the inverter is connected to the network) of the leakage current of the DC side (photovoltaic generator) relative to the ground (set by regulation) to have redundancy in the measurement (2 measurements on the same parameter carried out by two different circuits).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact  customer service. All required repair kits and additional support for this issue can be found at: https://solarparts.eu/pages/e031-error-solutions.

84. Error Code: E031, E 031
- Error Message: Error Read V
- Indicator: Yellow LED
- Description: Damaged output relay: Measurement of the internal voltage across the output relay out of range. There is too much difference in voltage between the input and the output of the network connection relay.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem persists after turning the inverter off and then back on, please contact customer service. All required repair kits and additional support for this issue can be found at: https://solarparts.eu/pages/e031-error-solutions.

85. Error Code: E032, E 032
- Error Message: Error Read I
- Indicator: Yellow LED
- Description: Unbalanced output currents: Measurement of the unbalance of the output voltage (carried out between the three phases) out of range (only in three-phase models).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service. All required repair kits and additional support for this issue can be found at: https://solarparts.eu/pages/e031-error-solutions.

86. Error Code: E033, E 033
- Error Message: UTH
- Indicator: Yellow LED
- Description: Low ambient temperature: External temperature to the inverter lower than -25°C.
- Solution: Wait for the temperatures to which the inverter is exposed to return to the operating range. If the problem persists, contact customer service. Remember to wait the necessary time to allow the inverter to warm up.

87. Error Code: E034, E 034
- Error Message: Interlock fail
- Indicator: Yellow LED
- Description: IGBT circuitry not ready: Internal error to the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

88. Error Code: E035, E 035
- Error Message: Remote Off
- Indicator: Yellow LED
- Note: Not displayed on display
- Description: Inverter waiting for the “remote ON” command: The inverter has been turned off remotely (remote OFF) and remains in a waiting state for the signal that will turn it back on (Remote ON).
- Solution: Turn the inverter back on remotely. If the unit does not turn back on, disable the remote off/on function and perform a total shutdown of the equipment and then restart it. If the problem persists after reactivating the Remote ON/OFF function, contact customer service.

89. Error Code: E036, E 036
- Error Message: Vout Avg error
- Indicator: Yellow LED
- Description: Average of network voltage measurements out of range: The average value of the network voltage (sampled every 10 minutes) does not fall within the permitted ranges. The network voltage at the point connected to the inverter is too high. This can be caused by too high a network impedance. In the final phase of the timeout, the inverter limits the power to check if the network voltage stabilizes within the regular parameters. If this does not happen, the inverter disconnects from the network.
- Solution: Check the network voltage at the inverter connection point. If the network voltage deviates from the range due to the conditions of the distribution network, request an adjustment of the network voltage from the manager. If the manager authorizes a modification of the inverter's parameters, agree on the new limits with customer service.

90. Error Code: E037, E 037
- Error Message: Riso Low
- Indicator: Red LED
- Description: Low insulation resistance value (only with “Amorphous” mode activated): This error can only occur if the “Amorphous” mode is enabled. This function is enabled only in inverters equipped with a grounding kit and is used to monitor the voltage across the grounding resistance. The error occurs when the voltage across the resistance connected between earth and the pole of the photovoltaic generator exceeds 30V for more than 30 minutes or 120V for more than a second.
- Solution: Check the presence and correct contact of the two terminals of the grounding resistance installed inside the inverter. Perform a measurement of the insulation resistance using a megohmmeter placed between the photovoltaic field (positive terminal short-circuited to the negative pole) relative to the ground. If the measured value is less than 1 megaohm, a technician/installer must check the photovoltaic generator to identify and eliminate the problem. If the measured value is more than 1 megaohm and the error indication continues to be present, contact customer service.

91. Error Code: E038, E 038
- Error Message: Ventole KO (Fans Blocked)
- Description:
- a) Presence of foreign objects.
- b) Fault in the fan.
- Solution:
- a) Check the state of the filters and inspect the front panel at the central fan. If the error is permanent, contact ABB Service.
- b) Identify which fan is blocked (FAN 1/2/3) using Aurora CVI Central and contact ABB Service. Repeated errors can lead to Autoexclusion error E043.

92. Error Code: E039, E 039
- Error Message: DC Open (DC Switch Open)
- Description:
- a) DC switch open.
- b) Fault in the auxiliary contact state.
- Solution:
- a) Check the state of the DC switch by removing the left front panel.
- b) Check the state of the auxiliary contact (J14/J11 sideboard) by operating the DC contactor (ON/OFF) and verifying the state change of the connection wiring using a tester. Try exchanging the module with another in the same rack. If the error persists in the same module, contact ABB Service.

93. Error Code: E040, E 040
- Error Message: AC Open (AC Switch Open)
- Description:
- a) AC switch open/fault in auxiliary contact, fault in the dipswitch board.
- b) Fault in the dipswitch board.
- Solution:
- a) If the error is present on all modules of the same rack, check the status of the switch and the auxiliary contact inside the AC switch. For –TL inverters, check the continuity of the auxiliary contact between the AC drawer and the terminal block in the ACbox compartment as follows:
- AC Switch ON: Continuity between X7D and X7F.
- AC Switch OFF: Continuity between X7D and X7E.
Verify the connection of the wires between the terminal block and the Molex CN2 connector of the AC drawer.
- b) If the error is present only in some modules of the rack, check the connections on the dipswitch board. Try swapping the module with another of a different framework. If the error persists in the same module, contact ABB Service.

94. Error Code: E041, E 041
- Error Message: Interr. AC (AC Internal Contactor Did Not Switch)
- Description: Fault in the internal contactor of the module.
- Solution: Perform a complete restart cycle of the inverter. Try swapping the module with another in the same rack. If the error persists in the same module, contact ABB Service.

95. Error Code: E042, E 042
- Error Message: Bulk Low (Low Voltage on Capacitors)
- Description: DC side voltage below the minimum threshold.
- Solution: Use Aurora CVI Central software to download the fault log and check the recurrence of the error. If the error is permanent, try swapping the module with another in the same rack. If the error persists in the same module, contact ABB Service.

96. Error Code: E043, E 043
- Error Message: Auto Excl. (Autoexclusion of the Module Due to Repeated Faults)
- Description: The module has detected a high number of errors of the same type.
- Solution: The module is in a state of autoexclusion from the system to avoid further damage. Errors that can lead the module to this state are: E005, E007, E015, E038. Use Aurora CVI Central software to unlock the module and download the fault log to understand the initial cause that generated the state of autoexclusion. In the case of E038, the module autoexcludes itself after 900 seconds from the detection of the first error.

97. Error Code: E046, E 046
- Error Message: String selftest fail
- Indicator: No LED
- Description: Error during the automatic check of string voltages (only in models with a “fuse-control” card): In some inverter models, it is possible to perform a test to check the polarity of the strings connected at the input (e.g., TRIO-20.0/27.6kW). This error occurs when, during the test phase, an inverted string is detected.
- Solution: Disconnect the inverter and check the polarity of the string/strings that the inverter has detected as inverted. Once all the strings are correctly connected, restart the commissioning; the inverter will again check the correct polarity of the input strings at the end of which it will perform the checks for network connection. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

98. Error Code: E049, E 049
- Error Message: AC FF Error
- Indicator: Yellow LED
- Description: Error in the "AC feed-forward" circuit part: Internal error to the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

99. Error Code: E050, E 050
- Error Message: AFDD Activated
- Indicator: Yellow LED
- Description: Arc Fault protection activated: Possible photovoltaic arc detected on the DC part.
- Solution: If this is the first time the problem has occurred, press the ESC button for 5 seconds and wait for the unit to restart. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

100. Error Code: E051, E 051
- Error Message: Safety mem. Fault
- Indicator: Yellow LED
- Description: Internal error in the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

101. Error Code: E053, E 053
- Error Message: AFDD Fault
- Indicator: Yellow LED
- Description: Arc Fault card self-test failed: Problem detected during the self-test phase of the AFDD card.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

102. Error Code: E054, E 054
- Error Message: AFDD comm. Fault
- Indicator: Yellow LED
- Description: Arc Fault card communication error: Error in the RS485 serial communication detected between the inverter and the AFDD card.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

103. Error Code: E055, E 055
- Error Message: AFDD wrong conf.
- Indicator: Yellow LED
- Description: Error reading parameters of the Arc Fault card: Error in reading the parameters by the system.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

104. Error Code: E056, E 056
- Error Message: Over Temp. (from external box)
- Indicator: Yellow LED
- Description: Excessive temperature measured inside the wiring box of the inverter: High internal temperature. This error relates to the temperature measured on external boxes (e.g., TRIO-20.0/27.6kW models).
- Solution: Verify 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 is back within the range, contact customer service. Remember to wait the necessary time to allow the inverter to cool down.

105. Error Code: E057, E 057
- Error Message: Vbulk reading error
- Indicator: Yellow LED
- Description: Input voltage (Vin) higher than the booster voltage (Vbulk): The error occurs if the input voltage exceeds the Bulk voltage (voltage on the internal DC-DC circuit part of the inverter).
- Solution: It is necessary to measure the internal input voltage to the inverter with a voltmeter. If it is higher than the maximum operating range, the alarm is real and it is necessary to check the configuration of the PV generator. If it is lower than the maximum operating range, it is an alarm induced by an internal malfunction and it is necessary to contact customer service.

106. Error Code: E058, E 058
- Error Message: Pin vs Pout check error
- Indicator: Yellow LED
- Description: Error in the Pin vs Pout check: The error occurs if the difference between the measured input power value and the output power is greater than the internal set limit of the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

107. Error Code: E065, E 065
- Error Message: Stop Button
- Indicator: Yellow LED
- Description: Emergency stop button (stop) activated: This code signals the activation of the emergency stop button (button pressed). This signal is activated only if there is DC or AC voltage because if the operation is only from the battery and the emergency stop button is pressed, it causes the total shutdown of the system.
- Solution: Verify that the emergency stop button is pressed and proceed to deactivate it. If the signal persists despite the button being deactivated, contact customer service.

108. Error Code: E066, E 066
- Error Message: Charger-Bulk
- Indicator: Yellow LED
- Description: Error in the "Charger" circuit part: Internal error to the inverter related to the bulk voltage of the circuit part linked to the battery charger.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

109. Error Code: E067, E 067
- Error Message: Charger - OV
- Indicator: Yellow LED
- Description: Overvoltage of the "battery charger" voltage (Charger circuit): Internal error to the inverter. The alarm is raised when the battery charging voltage exceeds the Over Voltage threshold (an internal unmodifiable threshold).
- Solution: The error can occur upon battery detachment (e.g., activation of the emergency button). If the error signal persists and is not related to battery detachments, contact customer service.

110. Error Code: E068, E 068
- Error Message: Charger - OC
- Indicator: Yellow LED
- Description: Overcurrent of the "battery charger" (Charger circuit): Internal error to the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

110. Error Code: E069, E 069
- Error Message: Charger-SlowRamp
- Indicator: Yellow LED
- Descriptio*: Internal error in the inverter related to the battery charging circuit (Charger circuit).
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

111. Error Code: E070, E 070
- Error Message: Charger-preChar.
- Indicator: Yellow LED
- Description: Internal error in the inverter.
- Solution: This is an internal error to the inverter, possibly related to a damaged internal fuse in the battery pack; the error cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

112. Error Code: E074, E 074
- Error Message: Internal error
- Indicator: Yellow LED
- Description: Internal communication error in the inverter: The alarm occurs when there are communication problems between the internal control devices of the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

113. Error Code: E077, E 077
- Error Message: Internal Error
- Indicator: Yellow LED
- Description: Error in the system configuration: Internal error to the inverter.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

109. Error Code: E078, E 078
- Error Message: Riso Test fail
- Indicator: Yellow LED
- Description: Riso test error: Problem detected during the Riso test phase.
- Solution: This is an internal error to the inverter and cannot be externally verified. If the problem (once the inverter is turned off and then turned back on) persists, contact customer service.

114. Error Code: E079, E 079
- Error Message: Wrong Sequence
- Indicator: Yellow LED
- Description: Incorrect Phase Connection: (Only for three-phase models) The phases have not been correctly connected on the AC output.
- Solution: Reverse two of the network wiring phases at the AC terminal block of the inverter.

115. Error Code: E081, E 081
- Error Message: Internal Error
- Indicator: Red LED
- Description: Inverter fault / Incomplete inverter closure: Internal fault in the inverter or incomplete closure of the inverter (missing or not tightened front cover, missing or incorrectly tightened cable glands, environmental protection rating IP65 not guaranteed).
- Solution: If the problem occurred during the installation phase, or during the maintenance phase of the inverter (thus the cover was removed or the cable glands were acted upon), perform the following operations: Disconnect the AC network and the DC input from the inverter and check the presence of the front cover and all cable glands, also checking their correct tightening to guarantee the environmental protection rating IP65; reconnect the AC network and the DC input and attempt to turn on the inverter; if the problem persists contact customer service. If, on the other hand, the front cover and all the cable glands are present, disconnect the AC network and the DC input from the inverter and wait 15 minutes at a safe distance, then open the inverter cover if there is no smoke/burnt smell and check the integrity of the components or the presence of moisture or other abnormal conditions; reconnect the AC network and the DC input and attempt to turn on the inverter; if the problem persists contact customer service. If the problem occurred after the installation or a maintenance phase of the inverter (thus the cover was NOT removed and the cable glands were NOT acted upon), disconnect the AC network and the DC input from the inverter and contact customer service.

116. Error Code: E084, E 084
- Error Message: BackFeed OC
- Indicator: Yellow LED
- Description: Back current to the photovoltaic field: The error occurs in cases where the input voltage is particularly low (typically in the evening in low irradiation conditions) and indicates a back current from the inverter to the photovoltaic panels.
- Solution: If the error occurs in the evening or in low irradiation conditions, it should not be considered as a problem but as the intervention of a protection to the photovoltaic field. If, however, the error occurs under good irradiation conditions, turn off and then turn on the inverter; if the presence of the error persists, contact customer service.

117. Error Code: E086, E 086
- Error Message: Batt. 1 - F2
- Indicator: No LED
- Description: Battery pack 1 unusable: Indicates that the battery pack is unusable and must be replaced.
- Solution: This is an internal error in battery pack 1 and cannot be externally verified. If the problem (once the system is turned off and then turned back on) persists, contact customer service.

118. Error Code: E087, E 087
- Error Message: Batt. 2 - F2
- Indicator: No LED
- Description: Battery pack 2 unusable: Indicates that the battery pack is unusable and must be replaced.
- Solution: This is an internal error in battery pack 2 and cannot be externally verified. If the problem (once the system is turned off and then turned back on) persists, contact customer service.

119. Error Code: E088, E 088
- Error Message: Batt. 3 - F2
- Indicator: No LED
- Description: Battery pack 3 unusable: Indicates that the battery pack is unusable and must be replaced.
- Solution: This is an internal error in battery pack 3 and cannot be externally verified. If the problem (once the system is turned off and then turned back on) persists, contact customer service.

120. Error Code: E089, E 089
- Error Message: Wrong Wiring
- Indicator: Yellow LED
- Description: Incorrect network cable connection on Stand Alone: The error occurs if the network cables are incorrectly connected to the Stand Alone output.
- Solution: Verify that the wirings on the Stand Alone output have been installed correctly.