Error Code

Message

– No code – Ground F – Red LED

The alarm is generated when a leakage current to ground is detected in the DC section of the system.

– No code – NEW COMPONENT REFUSED! – Orange LED

The components inside the inverter (e.g. display, fuse board, communication and control board, etc.) are not inter-linked. This occurs following the replacement of one of the components inside the inverter

– No code – SET COUNTRY or NO NATION – No LED

SET COUNTRY or NO NATION: Indicates that in the installation phase the grid standard was not set on the inverter.

– No code – Vac absent – Orange LED

Vac absent: The inverter displays the “Vac absent” message when it does not record output voltage (AC side).

– No code – Mem. broken – Orange LED

Memory broken: The inverter displays the “Memory broken” message when it records a communication problem with the memory board on which the inverter saves the daily value of energy produced.

– No code – Awaiting sun – Green LED

Awaiting sun: The inverter displays the “awaiting sun” message when, following a W001 and/or W002 notice, the voltage from the photovoltaic generator is less than the activation voltage (Vstart).

– W001 – Sun Low – Orange LED

Insufficient irradiation (Low input voltage on switching on the inverter): Incorrect configuration of the PV generator or an “on the limit” configuration for the inverter’s minimum input voltage.

– W002 – Input UV – Orange LED

Insufficient irradiation (Low input voltage on switching off): Incorrect configuration of the photovoltaic generator or an “on the limit” configuration for the inverter’s minimum input voltage.

– W003 – Grid Fail – Orange LED

Parameters of grid voltage outside range: This error signal occurs when during the inverter’s normal operation the grid parameters exceed the limits set by the operator: – Grid voltage absent (after the signal the inverter goes to “Vac Absent”) – Unstable grid voltage (down or up) – Unstable grid frequency

– W009 – Empty Table – Orange LED

Characterisation board for the wind generator not compiled (only WIND models)

– W010 * – Fan broken! – Orange LED

Fan broken: This error occurs when there is a malfunction in the fan/fans inside the inverter

– W011 – Bulk UV – Orange LED

Bulk Under-voltage: The alarm (which is a warning and not an error) is generated when the voltage at the heads of the bulk capacitors does not reach the threshold for the operation of the inverter (internal unchangeable threshold).

– W012 * – Batt. Flat – Orange LED

Battery flat: The inverter displays the “Battery flat” message when it records a voltage for the buffer battery which is too low.

– W013 * – Clock broken – Orange LED

Clock broken: The alarm occurs when there is a difference of over 1 minute in the time displayed compared to the internal time of the microprocessors and indicates a malfunction of the clock circuit

– W017* – String Err. – Orange LED

Error recorded in measuring string currents: Damaged string protection fuse(s)

– W018 * – SPD DC Err – Orange LED

Intervention of overvoltage surge arresters on DC side: Damaged overvoltage surge arresters positioned on DC side

– W019 * – SPD AC Err – Orange LED

Intervention of overvoltage surge arresters on AC side: Damaged overvoltage surge arresters positioned on AC side

– W022 * – Reactive power mode changed – No LED *not visualised on display

Variation in means of managing reactive power: Variation in the means of managing reactive power; this change can be made through the display or advanced configuration software.

– W023 * – date/time changed – No LED *not visualised on display

Variation in the inverter’s date and time: Variation of the inverter’s date and time; this change can be made through the display or advanced configuration software.

– W024 * – Energy data reset – No LED *not visualised on display

Zeroing of the statistical energy data memorised in the EEPROM: Reset of the energy data saved in the inverter; this operation can be handled through the display or advanced configuration software.

– E001 – Input OC – Orange LED

Input over-current (photovoltaic generator): The alarm occurs when the inverter’s input current exceeds the inverter’s threshold for maximum input current.

– E002 – Input OV – Orange LED

Input over-voltage (photovoltaic generator): The alarm is generated when the input voltage (from the PV generator) exceeds the inverter’s threshold of maximum input voltage. The alarm occurs before reaching the absolute threshold over which the inverter is damaged. When the inverter’s input voltage exceeds the Over Voltage threshold, the inverter will not start up due to the generation of the alarm.

– E003 – No Parameters – Orange LED

DSP initialisation error: The main microcontroller cannot initialise correctly the two DSPs (booster stage and inverter stage). The error is caused by communication problems on the inverter’s internal bus.

– E004 – Bulk OV – Orange LED

“Bulk” over-voltage (DC-DC circuit): Error inside the inverter. The alarm is raised when the voltage at the heads of the bulk capacitors exceeds the Over Voltage threshold (internal unchangeable threshold).

– E005 – Comm.Error – Orange LED

Communication error inside the inverter: The alarm occurs when there are communication problems between the control devices inside the inverter.

– E006 – Output OC – Orange LED

Output over current: The alarm occurs when the inverter’s output current exceeds the inverter’s threshold for maximum output current.

– E007 – IGBT Sat – Orange LED

Saturation recorded on the IGBT components: The alarm occurs when one of the inverter’s active devices is in a saturated state.

– E009 – Internal error – Orange LED

Error inside the inverter: Error inside the inverter

– E010 – Bulk Low – Orange LED

Low “Bulk” voltage (DC-DC circuit): • The alarm may be triggered by causes external to the inverter: a reduced input voltage on the inverter (just above the activation voltage) but which is not accompanied by a sufficient availability of power from the photovoltaic generator (typical condition of the stages with limited irradiation)

– E011 – Ramp Fail – Orange LED

Long wait for “Booster” regime to start: Error internal to inverter relating to start up time for DCDC circuit regime (Booster)

– E012 – DcDc Fail – Orange LED

Error in the “Booster” circuit (DC-DC side) recorded by the “Inverter” circuit (DC-AC side): Error internal to inverter relating to operation of the DCDC circuit regime (Booster)

– E013 – Wrong Mode – Orange LED

Incorrect configuration of inputs (set in parallel rather than independent): The alarm is generated solely 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 by more than 20Vdc, the alarm is raised.

– E014 – Over Temp. – Orange LED

Excessive temperature inside the inverter: External temperature over 60°C. This parameter also depends on the power which the inverter must supply since the measurement of temperatures is done internally and is influenced by the heat dissipated by the components of the inverter itself

– E015 – Bulk Cap Fail – Orange LED

Breakdown recorded on the “Bulk” capacitor: Error inside the inverter relating to a problem in the bulk capacitors.

– E016 – Inverter Fail – Orange LED

Error in the “Inverter” circuit (DC-AC side) recorded by the “Booster” circuit (DC-DC side): The alarm is generated when a problem is recorded in the inverter circuit (DC/AC)

– E017 – Start Timeout – Orange LED

Long wait for “Inverter” regime to start up: Error internal to inverter relating to start-up time for the DC-AC circuit regime (Inverter) • The alarm may be triggered by causes external to the inverter: a reduced input voltage on the inverter (just above the activation voltage) but which is not accompanied by a sufficient availability of power from the photovoltaic generator (typical condition of the stages with limited irradiation)

– E018 – Ground Fault – Red LED

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 ground is detected in the DC section of the system. It is also possible that the inverter generates the alarm E018 message also due to AC leakage currents connected to the capacitive nature of the photovoltaic generator compared to ground.

– E019 – Ileak sense.fail – Orange LED

Failure of test on sensor to measure the leakage current (DC side): Before connecting to the grid the inverter runs a self-test regarding the sensor for the leakage current. The test is carried out by “forcing”, in the sensor of the leakage current, a current with a known value: the microprocessor compares the value read 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.

– E020 – Self Test Error 1 – Orange LED

Failure of the test on the relay of the “Booster” (DCDC circuit): Before connecting to the grid the inverter carries out internal tests. One of these tests concerns the correct operation of the booster relay. The test is carried out by “forcing” the switching of the relay and checking its operation. The error is generated if a problem is found in actioning the relay.

– E021 – Self Test Error 2 – Orange LED

Failure of the test on the inverter’s relay (DC-AC circuit): Before connecting to the grid the inverter carries out internal tests. One of these tests concerns the correct operation of the inverter relay. The test is carried out by “forcing” the switching of the relay and checking its operation. The error is generated if a problem is found in actioning the relay.

– E022 – Self Test Error 4 – Orange LED

Timeout of the tests undertaken on the relays inside the inverter: Execution time for the self-test carried out on the relay of the DC_AC (inverter) circuit too high. It may indicate a problem connected to the aforementioned relays

– E023 – DC in error – Orange LED

Feeding of continuous current to grid outside of range: The error is generated if the continuous component of the current supplied to the grid exceeds the threshold of 0.5% of the normal operating current. In any case the inverter is not blocked due to the E023 error, but tries to reconnect to the grid. The sporadic repetition of the error is a sign of serious grid distortions or sharp irradiation changes, while systematic repetition of the error signal will indicate a breakdown on the inverter

– E024 – Internal error – Orange LED

Error inside the inverter: Error inside the inverter

– E025* – Riso Low – Orange LED

Low value of insulation resistance: Before connecting to the grid the inverter measures the insulation resistance of the PV generator compared to ground. Should the measurement of the insulation resistance be below 1Mohm, the inverter does not connect to the grid and shows the “Riso Low” error. The causes may be: – PV panel(s) damaged; – Junction box(es) of the panels not correctly sealed, so as to permit infiltration by water and/or humidity; – Problems in connections between panels (not perfectly fit); – Poor quality of cable joints; – Presence in the DC section of unsuitable or damaged overvoltage surge arresters outside the inverter (reduced ignition voltage compared to the characteristics of the strings of the PV generator); – Presence of humidity inside any junction box

– E026 – Vref Error – Orange LED

Internal reference voltage outside of range: Wrong measurement of reference voltage inside inverter

– E027 – Error Meas V – Orange LED

Grid voltage outside of range: Error in the internal measurement of grid voltage (set by law) in order to have a redundant measurement (2 measurements on the same parameter made by two different circuits)

– E028 – Error Meas F – Orange LED

Grid frequency outside of range: Error in the internal measurement of grid frequency (set by law) in order to have a redundant measurement (2 measurements on the same parameter made by two different circuits)

– E029 – Mid Bulk OV – Orange LED

Internal over voltage on the measurement of the “Mid bulk”: Error internal to the inverter (only triphase models)

– E030 – Error Meas Ileak – Orange LED

High leakage current (DC side): Error in the internal measurement (made when the inverter is grid connected) of the leakage current of the DC side (PV generator) compared to ground (set by law) in order to have a redundant measurement (2 measurements on the same parameter made by two different circuits)

– E031 – Error Read V – Orange LED

Output relay damaged: Measurement of internal voltage on heads of the output relay outside of range. There is too great a difference in voltage between the input and output of the grid connection relay.

– E032 – Error Read I – Orange LED

Output relay damaged: Measurement of internal voltage on heads of the output relay outside of range. There is too great a difference in voltage between the input and output of the grid connection relay.

– E033 – UTH – Orange LED

Low ambient temperature: Temperature outside the inverter below -25°C

– E034 – Interlock fail – Orange LED

“IGBT” circuitry not ready: Error inside the inverter

– E035* – Remote Off – Orange LED

Inverter awaiting “remote ON” command: The inverter has been switched off remotely (remote OFF) and remains awaiting the signal which will switch it back on (Remote ON)

– E036 – Vout Avg error – Orange LED

Average of the measurements of grid voltage outside of range: The average value of the grid voltage (sampled every 10 minutes) does not fall within the permitted ranges. The grid voltage in the point connected to the inverter is too high. This may be caused by too high a grid impedance. In the final stage of the timeout, the inverter limits the power to check whether the grid voltage has stabilised into regular parameters. If this does not happen, the inverter disconnects from the grid

– E037 – Riso Low – Red LED

Low value of the insulation resistance (only with the “Amorphous” mode activated): This error can occur only should the “Amorphous” mode be on. This function is on only in inverters equipped with a grounding kit and serves to monitor the voltage at the heads of the grounding resistance. The error occurs when the voltage at the heads of the resistance connected between ground and the pole of the photovoltaic generator exceeds 30V for more than 30 minutes or 120V for more than one second.

E046 – String self test fail – No LED

Error during the automatic check of the string voltages (only in models with the “fuse-control” board): In some inverter models it is possible to carry out the check test of the polarity of the strings connected to the input (e.g.:TRIO-20.0/27.6kW). This error signal occurs when, during the test stage, an inverted string is recorded

E056 – Over Temp. (from external box) – Orange 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

E058 – Pin vs Pout check error – Orange 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.