Sirio Aros

By Erik Zaikin
5 min read

LCD Display Messages and Troubleshooting

Warnings

  • W01 Memory fault: Issue with datalogger memory. Action: Contact technical assistance.
  • W02 Unset nation: The nation setting is missing. Action: Select the nation of installation as per the 'Choosing the nation' section.
  • W03 Unset clock: Date not set. Action: Set the date via the ‘SETTINGS’ Menu.
  • W04 Fan anomaly: Indicates a fan problem. Action: Turn off the inverter, check for foreign objects in the fan, and if necessary, contact technical assistance.
  • W05 High °C: Inverter temperature is high. Action: Check installation site requirements. If the alarm persists after a prolonged shutdown, contact technical assistance.
  • W06 Low °C: Room temperature is too low or temperature sensors are faulty. Action: Check inverter operation during central hours of the day and/or sensor reliability.
  • W08 Derating P/I: Inverter operating with limited power. Action: Refer to the Efficiency and power limitation section.
  • W09 Low Vdc: Input voltage is low; inverter in standby before starting. Action: This is normal in certain conditions; no action needed unless persistent.
  • W10 Low DC power: Low power available from PV generator; inverter goes into standby. Action: Check if panels are covered with snow or dirty and clean if necessary.
  • W11 Grid timeout: Grid outside limits for over 10 minutes in 'Check AC'. Action: Wait for reconnection.
  • W12 Plow timeout: Output power too low for too long, inverter enters standby. Action: Wait for reconnection.
  • W13 Precharge KO: Bulk capacitors loading longer than expected. Action: This is normal at sunrise/sunset or if panels are dirty or covered with snow.
  • W14 REP command: Output power limited by grid operator. Action: No action required.
  • Start ramp: Initial output power limitation ramp in progress. Action: No action required.
  • W16 Boost fault: Input converter fault. Action: Contact technical assistance.

System Malfunctions

  • A02 Fac outrange: Grid frequency outside limits. Action: Wait for reconnection.
  • A03 Low Vac: Grid voltage outside limits. Action: Check AC system, contact your energy distributor.
  • A04 High Vac/A05 High avg Vac: Average grid voltage outside limits. Action: Same as above.
  • A06 Weak grid: Output power limited due to high grid voltage. Action: No immediate action required; check if adjustment needed.
  • A07 High Vdc: Input voltage exceeds maximum no-load voltage. Action: Verify system size.
  • A08 No Grid: No grid voltage present, inverter switches off if condition persists. Action: Wait for reconnection.
  • A09 Grid anomaly: Grid voltage or frequency outside limits. Action: Check AC system, contact your energy distributor.
  • A10 Overfrequen.: Output power limited according to grid frequency. Action: No action required.
  • A11 Emergency: Feeding interrupted by emergency command from grid operator. Action: Wait for resolution.

Inverter Problems

  • F01 High V_bulk+/F03 High V_bulk-/F03 High V_bulk: Internal voltage too high. Action: Contact technical assistance for 1.5kW – 2kW versions; 3kW version will restart by itself.
  • F04 Bulk balance: Internal bulk capacitors unbalanced. Action: Inverter will restart by itself.
  • F05 High °C: High temperature or faulty sensors. Action: Check installation site requirements; contact technical assistance if issue persists.
  • F06 Link fail: Inverter does not detect internal devices. Action: Contact technical assistance.
  • F07 Insulat. KO: Negative isolation resistance verification. Action: Check the system; if problem persists, contact for further assistance.
  • F08 DC injection: Too high DC current input on the grid. Action: Wait for grid reconnection.

Inverter Faults

  • L01 Data bus KO to L21 Autotest KO: Various communication, memory, and sensor issues. Action for all: Contact technical assistance or follow specific instructions provided for resetting or checking the installation.
  • L28 Iac sens. KO: Output current sensor fault. Action: Contact technical assistance.

Operating Conditions and Status Messages

  1. Off - No Display

    • Description: The PV inverter is completely off. The VDC is below the “Working range.”

  2. Standby - Waiting

    • Description: Input voltage (VDC) is below the "Working range" but above "Shutdown voltage."

  3. Powered On and Waiting - Ready…

    • Description: Input voltage is within the "Working range" but below the "Initial feed-in voltage." The inverter is ready to supply current once voltage exceeds this threshold.

  4. Grid Feed-In Control - Checking

    • Description: When voltage exceeds "Initial feed-in voltage," the inverter verifies feed-in conditions and initiates a countdown.

  5. Grid Feed-In, MPPT - Connected to Grid

    • Description: The inverter is supplying current to the grid. After 10 seconds, the power being supplied is displayed.

  6. Firmware Update - FLASH FLASH

    • Description: Firmware update is in progress.

Monitoring Parameters

  1. Instantaneous Output Power - Pac=xxxxW

    • Description: Real-time output power in watts (W).

  2. Accumulated Energy - Energy=xxxxxxkWh

    • Description: Total energy supplied to the grid since inverter installation.

  3. Grid Voltage - Vac=xxx.xV

    • Description: Grid voltage in volts AC (VAC).

  4. Grid Frequency - Frequency=xx.xHz

    • Description: Grid frequency in hertz (Hz).

  5. Grid Current - AC Current=xx.xA

    • Description: Current supplied to the grid in amperes (A).

  6. PV Input Voltage - Vdc=xxx.xV

    • Description: Input voltage from PV panels in volts (V).

System Faults

  1. Insulation Anomaly - Err. Aislamiento

    • Description: Ground insulation fault in the PV generator or input surge protection triggered.

  2. Ground Fault Circuit Interrupter (GFCI) Active - Err. Tierra

    • Description: Excessive leakage current to ground.

  3. Network Fault - Fallo de red

    • Description: Measured network data (voltage, frequency) is out of tolerance.

  4. Abnormal Network Impedance - Err. Impedancia

    • Description: Network impedance exceeds permissible levels, or impedance change (ΔZ) is above the limit.

  5. Grid Unavailable - Red no presente

    • Description: The AC grid is unavailable.

  6. High DC Input Voltage - Sobretensión DC

    • Description: Input voltage exceeds the "Max. open DCV" threshold.

Inverter Faults

  1. Reading Consistency Error - Err. Micros

    • Description: Inconsistent AC parameter readings (voltage, frequency, leakage current, DC injection) from the microprocessors.

  2. High Temperature - Sobretemperatura

    • Description: Internal temperature exceeds normal operating limits.

  3. Output Relay Fault - ERR. Contactor AC

    • Description: The relay between the inverter and the grid is not functioning correctly.

  4. High DC Output Current - Nivel DC alto

    • Description: Excessive DC current injection on the output.

  5. EEPROM Error - ERR. EEPROM

    • Description: Issues with reading data from the internal EEPROM.

  6. Microprocessor Communication Error - ERR. COM

    • Description: Communication issue between microprocessors.

  7. High Internal Bus Voltage - FALLO CC ALTO

    • Description: Internal bus voltage is too high.

  8. Low Internal Bus Voltage - FALLO CC BAJO

    • Description: Internal bus voltage is too low.

  9. Reference Voltage Error (2.5V) - ERR. REF 2.5V

    • Description: Anomaly in the internal 2.5V reference voltage.

  10. DC Output Sensor Fault - ERR SENSOR DC

    • Description: Anomaly in the DC output sensor.

Inverter Information and Display Messages

  1. Model Display - XXXX W

    • Description: Displays the inverter model.

  2. LCD Contrast Adjustment - Ajuste contraste

    • Description: Allows adjustment of the screen contrast.

  3. LCD Lock - LCD bloqueado

    • Description: Holds the currently displayed message on the screen.

  4. Reconnect Wait Time - Reconexión xxx s

    • Description: Time remaining before reconnecting to the grid.

  5. Firmware Version - Firmware xx.xx

    • Description: Displays the firmware version information.

  6. Language Setting - Ajuste idioma

    • Description: Sets the display language.

Models: AROS EVO HV MT K64 K80 K100 K200 K250 K330 K500 K800
1500 2000 2800 3100 4000 4600P 4000P 6000P 10000P
12K 16K 20K 30K 40K 50K 80K 100K 125K 250K
30KHV 40KHV 50KHV 80KHV 100KHV 125KHV 250KHV 320KHV250KHV-MT 320KHV-MT 640KHV-MT