Fronius Energy Solutions

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Fronius Error Codes

Fronius Primo

Error 3##


STATE 301 Overcurrent (AC) Short-term interruption while feeding energy into the grid due to over current in the inverter. The inverter resumes with its startup routine. Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner. STATE 302 Overcurrent (DC) STATE 303 Power stage set over temperature Short term interruption while feeding energy into the grid due to over temperature. The inverter resumes with its startup routine. Purge openings for cooling air and heat sink if necessary; fault is rectified automatically; if this STATE code keeps recurring contact your solar power system installer. STATE 304 Internal temperature too high STATE 306 LOW PV OUTPUT Intermediate circuit voltage too low for feeding energy into the grid Short term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically; if this STATE code occurs when there is sufficient insolation (sunlight) contact your solar power system installer. IMPORTANT! Due to the low level of insolation (sunlight) early in the morning and in the evening, the STATE codes 306 (LOW PV OUTPUT) and 307 LOW PV VOLTAGE) are displayed routinely at these times of day. These STATE codes do not indicate any kind of fault. STATE 307 LOW PV VOLTAGE DC input voltage too low for feeding energy into the grid STATE 308 Intermediate circuit overvoltage Short term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner. STATE 309 DC input voltage MPPT 1 too high STATE 313 DC input voltage MPPT 2 too high




Error 4##


STATE 401 No communication with power stage set possible The inverter will automatically attempt to connect again and, if possible, will resume feeding energy into the grid. If the STATE code is displayed all the time contact your local Fronius Service Partner STATE 406 Power stage set temperature sensor faulty STATE 407 Internal temperature sensor faulty STATE 408 DC feeding into the grid detected STATE 412 Fixed voltage mode has been selected instead of MPP voltage mode and the fixed voltage has been set to too low or too high a value If this STATE code persists contact your solar power system installer STATE 415 Safety cut out via option card or RECERBO has triggered The inverter is not feeding any energy into the grid. If the STATE code is displayed all the time contact your local Fronius Service Partner STATE 416 No communication possible between power stage set and control system The inverter will automatically attempt to reconnect again and, if possible, will resume feeding energy into the grid. STATE 417 Hardware ID problem STATE 419 Unique ID conflict STATE 421 HID range error STATE 425 No communication possible with the power stage set STATE 426-428 Possible hardware fault STATE 431 Software problem The inverter is not feeding any energy into the grid. Carry out an AC reset (switch the AC circuit breaker off and on); update the inverter firmware; if this status code is displayed all the time please contact your local Fronius Service Partner. STATE 436 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced. The inverter will automatically attempt to connect again and, if possible, will resume feeding energy into the grid. Update the inverter firmware; if this status code is displayed all the time please contact your local Fronius Service Partner. STATE 437 Power stage set problem STATE 438 Functional incompatibility (one or more PC boards in the inverter in the inverter are not compatible with each other, e.g. after a PC board has been replaced) STATE 443 Intermediate circuit voltage too low or asymmetric The inverter is not feeding any energy into the grid. If the status code is displayed all the time contact your local Fronius Service Partners. STATE 445 Invalid limit value settings The inverter is not feeding any energy into the grid for safety reasons. Update the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 447 Insulation fault If this status code is displayed all the time: notify a local Fronius Service Partner STATE 448 Neutral conductor not connected STATE 450 Guard cannot be found STATE 452 Memory error detected The inverter will automatically attempt to connect again, and if possible, will resume feeding energy into the grid. If the STATE code is displayed all the time: notify your local Fronius Service Partner. STATE 452 Communication error between the processors STATE 453 Short term grid voltage error STATE 454 Short term grid frequency error STATE 456 Anti-islanding function is no longer implemented correctly STATE 457 Grid relay sticking The inverter is not feeding any energy into the grid. Contact your local Fronius Service Partner. STATE 459 Error when recording the measuring signal for the insulation test STATE 460 Reference voltage source for the digital signal processor (DSP) is working out of tolerance STATE 461 Fault in the DSP data memory STATE 462 Error with DC feed monitoring routine STATE 463 Reversed AC polarity, AC connector inserted incorrectly STATE 474 RCMU sensor faulty If this STATE code keeps recurring, contact your solar power system installer STATE 475 Solar panel ground fault, insulation fault (connection between solar panel and ground) STATE 476 Driver supply voltage too low STATE 480, 481 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced) Update the inverter firmwarewith the latest firmware here; if the STATE code persists contact your local Fronius Service Partner S TATE 482 Startup incomplete Perform AC reset (turn AC circuit breaker off and on), complete startup. STATE 483 Voltage UDC fixed on MPP2 string out of limits Check the MPP settings; if the status code is displayed all the time contact your local Fronius Service Partner STATE 485 CAN transmit buffer is full Carry out an AC reset (turn AC circuit breaker off and on), if the STATE code continues to be displayed notify your local Fronius Service Partner.




Error 5##


STATE 502 Insulation error on the solar panels Warning message is shown on the display STATE 509 No energy fed into the grid in the past 24 hours STATE 515 No communication with filter possible STATE 516 No communication possible with the storage unit Storage unit warning message. STATE 517 Derating caused by too high a temperature When power derating occurs, a warning message is shown on the display STATE 522 DC1 Input Voltage too low The DC voltage on input 1 of the inverter is too low STATE 523 DC2 Input Voltage too low The DC voltage on input 2 of the inverter is too low STATE 558 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced) Possible error displays or malfunction on the inverter STATE 560 Derating caused by over-frequency This STATE code is displayed when the grid frequency becomes excessively high. The inverter will then reduce its output. The status indicator will continue to be displayed until the inverter has returned to normal operation. STATE 566 Arc detector switched off (e.g. during external arc monitoring) The STATE code is displayed every day until the arc detector is reactivated. STATE 567 Grid Voltage Dependent Power Reduction is active This state code is a warning informing you that the Grid Voltage Dependent Power Reduction mode (GVDPR or Volt – Watt mode) has been activated and the inverter will continue to operate with reduced power output. This is because the grid voltage has exceeded 250Vac and the GVDPR has been enabled to try to reduce the voltage rise at the inverters terminals. This mode must be enabled by default in accordance with the latest Australian Standards.




Error 7##


STATE 705 Conflict when setting the inverter number (e.g. number already assigned) STATE 721 EEPROM has been reinitialised or EEPROM is faulty Warning message is shown on the display STATE 731 Initialisation error – USB stick is not supported STATE 732 Over current on USB stick STATE 733 No USB stick connected STATE 734 Update file not recognised or not present STATE 735 Update file does not match the device, update file too old Warning message appears on the display, update process is interrupted. STATE 736 Write or read error occurred Warning message is shown on the display STATE 738 Log file cannot be saved (e.g. USB stick is write protected or full)t STATE 743 Error occurred during update process STATE 745 Update file corrupt Warning message appears on the display, update process is interrupted. STATE 751 Time lost Warning message is shown on the display STATE 752 Real Time Clock module communication error STATE 757 Hardware error in the Real Time Clock module Error message is shown on the display; the inverter is not feeding any energy into the grid. STATE 758 Internal error: Real Time Clock module is in emergency mode Time may be inaccurate or lost (feeding energy into the grid normal).. STATE 766 Emergency power de-rating has been activated Error message is shown on the display.




Error 1##


STATE 102 AC voltage too high Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. Check grid connections: If this STATE code keeps recurring contact your solar power system installer. STATE 103 AC voltage too low STATE 105 AC frequency too high STATE 106 AC frequency too low STATE 107 AC grid outside the permissible limits STATE 108 Stand alone operation detected STATE 112 RCMU error





Fronius SYMO

Error 1##


STATE 102 AC voltage too highFollowing careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid.Check grid connections: If this STATE code keeps recurring contact your solar power system installer. STATE 103 AC voltage too low STATE 105 AC frequency too high STATE 106 AC frequency too low STATE 107 AC grid outside the permissible limits STATE 108 Stand alone operation detected STATE 112 RCMU error




Error 3##


STATE 301 Overcurrent (AC)Short-term interruption while feeding energy into the grid due to over current in the inverter.
The inverter resumes with its startup routine.Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner. STATE 302 Overcurrent (DC) STATE 303 DC module over temperatureShort term interruption while feeding energy into the grid due to over temperature.
The inverter resumes with its startup routine.Purge openings for cooling air and heat sink if necessary; fault is rectified automatically; if this STATE code keeps recurring contact your solar power system installer. STATE 304 AC module over temperature STATE 305 No power being fed in, despite closed relayShort term interruption while feeding energy into the grid due to over temperature.
The inverter resumes with its startup routine.fault is rectified automatically; if this STATE code keeps recurring contact your solar power system installer. STATE 306 PV output too low for feeding energy into the gridShort term interruption while feeding energy into the grid.
The inverter resumes with its startup routine.Fault is rectified automatically; if this STATE code occurs when there is sufficient insolation (sunlight) contact your solar power system installer.
IMPORTANT! Due to the low level of insolation (sunlight) early in the morning and in the evening, the STATE codes STATE 306 (LOW PV OUTPUT) and 307 LOW PV VOLTAGE) are displayed routinely at these times of day. These STATE codes do notindicate any kind of fault. STATE 307 LOW PV VOLTAGE
DC input voltage too low for feeding energy into the grid STATE 308 Intermediate circuit voltage too highShort term interruption while feeding energy into the grid. The inverter resumes with its startup routine.Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner. STATE 309 DC input voltage MPPT 1 too high STATE 311 Polarity of DC strings reversed STATE 313 DC input voltage MPPT 2 too high STATE 314 Current sensor calibration timeoutShort term interruption while feeding energy into the grid. The inverter resumes with its startup routine.Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner. STATE 315 AC current sensor erro STATE 316 Interrupt Check fail STATE 325 Overtemperature in the connection area STATE 326 Fan 1 error STATE 327 Fan 2 error




Error 4##


STATE 401 No communication possible with the power stage setThe inverter will automatically attempt to connect again and, if possible, will resume feeding energy into the grid.If the STATE code is displayed all the time contact your local Fronius Service Partner STATE 406 AC module temperature sensor faulty (L1) STATE 407 AC module temperature sensor faulty (L2) STATE 408 DC component measured in the grid too high STATE 412 Fixed voltage mode has been selected instead of MPP voltage mode and the fixed voltage has been set to too low or too high a value–If this STATE code persists contact your solar power system installer STATE 415 Safety cut out via option card or RECERBO has triggeredThe inverter is not feeding any energy into the grid.If the STATE code is displayed all the time contact your local Fronius Service Partner STATE 416 No communication possible between power stage set and control systemThe inverter will automatically attempt to reconnect again and, if possible, will resume feeding energy into the grid. STATE 417 Hardware ID problemUpdate the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 419 Unique ID conflict STATE 420 No communication possible with the Hybrid manager STATE 421 HID range error STATE 425 No communication with the power stage set possible STATE 426-428 Possible hardware fault STATE 431 Software problemThe inverter is not feeding any energy into the grid.Carry out an AC reset (switch the AC circuit breaker off and on); update inverter firmware; if this status code is displayed all the time please contact your local Fronius Service Partner. STATE 436 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced.The inverter will automatically attempt to connect again and, if possible, will resume feeding energy into the grid.Update the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 437 Power stage set problem STATE 438 Functional incompatibility (one or more PC boards in the inverter in the inverter are not compatible with each other, e.g. after a PC board has been replaced) STATE 443 Intermediate circuit voltage too low or asymmetricThe inverter is not feeding any energy into the grid.If the status code is displayed all the time contact your local Fronius Service Partners. STATE 445 – Compatability error (e.g. due to replacement of a PC board)
– invalid power stage set configurationThe inverter is not feeding any energy into the grid for safety reasons.Update the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 447 Insulation faultIf this status code is displayed all the time: notify a local Fronius Service Partner STATE 448 Neutral conductor not connected STATE 450 Guard cannot be found STATE 451 Memory error detectedThe inverter will automatically attempt to connect again, and if possible, will resume feeding energy into the grid.If the STATE code is displayed all the time: notify your local Fronius Service Partner. STATE 452 Communication error between the processors STATE 453 Grid voltage and power stage set are incompatible STATE 454 Grid frequency and power stage set are incompatible STATE 456 Anti-islanding function is no longer implemented correctly STATE 457 Grid relay sticking or the neutral conductor ground voltage is too highThe inverter is not feeding any energy into the grid.Check the grounding (the neutral conductor ground voltage must be less than 30V. If problem persists contact your local Fronius Service Partner. STATE 458 Error when recording the measuring signalContact your local Fronius Service Partner. STATE 459 Error when recording the measuring signal for the insulation test STATE 460 Reference voltage source for the digital signal processor (DSP) is working out of tolerance STATE 461 Fault in the DSP data memory STATE 462 Error with DC feed monitoring routine STATE 463 Reversed AC polarity, AC connector inserted incorrectly STATE 474 RCMU sensor faulty STATE 475 Solar panel ground fault, insulation fault (connection between solar panel and ground) STATE 476 Driver supply voltage too low STATE 480, 481 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced)Update the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 482 Setup after the initial start-up was interruptedPerform AC reset (turn AC circuit breaker off and on), complete startup. STATE 483 Voltage UDC fixed on MPP2 string out of limitsCheck the MPP settings; if the status code is displayed all the time contact your local Fronius Service Partner STATE 485CAN transmit buffer is fullCarry out an AC reset (turn AC circuit breaker off and on), if the STATE code continues to be displayed notify your local Fronius Service Partner.




Error 5##


STATE 502 Insulation error on the solar panelsWarning message is shown on the displayIf this STATE code keeps recurring, contact your solar power system installer. STATE 509 No energy fed into the grid in the past 24 hoursAcknowledge STATE code; check whether all the conditions for the problem free feeding of energy into the grid have been met. If the STATE code is displayed all the time: look out for further STATE codes. STATE 515 No communication with filter possibleIf the status code is displayed all the time notify your local Fronius Service Partner. STATE 516 No communication possible with the storage unitStorage unit warning message. STATE 517 Power derating caused by too high a temperatureWhen power derating occurs, a warning message is shown on the displayPurge cooling air openings and heat sink if necessary; fault is rectified automatically; if this STATE code keeps recurring contact your solar power system installer. STATE 518 Internal DSP malfunctionWarning message on the displayIf this STATE code keeps recurring contact your solar power system installer. STATE 519 No communication possible with the storage unitStorage unit warning message STATE 520 No energy fed into the grid by MPPT1 in the past 24 hoursWarning message is shown on the displayAcknowledge status code; check whether all the conditions for the problem free feeding of energy into the grid has been met. If this STATE code keeps recurring contact your solar power system installer. STATE 522 DC low string 1Warning message on the display STATE 523 DC low string 2 STATE 558, 559 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced)Update the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 560 Derating caused by over-frequencyThis STATE code is displayed when the grid frequency becomes excessively high. The inverter will then reduce its output. The status indicator will continue to be displayed until the inverter has returned to normal operation.As soon as the grid frequency is back within the permissible range and the inverter has returned to normal operation, the fault is rectified automatically. If this STATE code keep recurring contact your solar power system installer. STATE 564 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced)Warning message on the displayUpdate the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 566 Arc detector switched off (e.g. during external arc monitoring)The STATE code is displayed every day until the arc detector is reactivated.No error
Confirm status code by pressing ‘Enter’. STATE 567 Grid Voltage Dependent Power Reduction is activeThis state code is a warning informing you that the Grid Voltage Dependent Power Reduction mode (GVDPR or Volt – Watt mode) has been activated and the inverter will continue to operate with reduced power output. This is because the grid voltage has exceeded 250Vac and the GVDPR has been enabled to try to reduce the voltage rise at the inverters terminals. This mode must be enabled by default in accordance with the latest Australian Standards.Acknowledge status code; if this STATE 567 code keeps recurring contact your local solar power system installer.
Find out more about the STATE 567 message here




Error 6##


STATE 601 CAN bus is fullThe inverter is not feeding any energy into the grid.Update the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 603 AC module temperature sensor faulty (L3)The inverter will automatically attempt to connect again and, if possible, will resume feeding energy into the grid.If this STATE code keeps recurring contact your solar power system installer. STATE 604 DC module temperature sensor faulty STATE 607 RCMU errorThe inverter is not feeding any energy into the grid.Reset status code by pressing ‘Enter’. The inverter resumes the feeding of energy into the grid; if the status code keeps appearing, check the complete solar system for damage. STATE 608 Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, e.g. after a PC board has been replaced)Update the inverter firmwarewith the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner.




Error 7##


STATE 701-716 Provides information about the internal processor statusWarning message is shown on the displayIf the STATE code is displayed all the time notify your local Fronius Service Partner. STATE 721 EEPROM has been re-initialisedAcknowledge STATE code; If the STATE code is displayed all the time contact your local Fronius Service Partner STATE 722-730 Provides information about the internal processor statusIf the STATE code is displayed all the time contact your local Fronius Service Partner STATE 731 Initialisation error – USB flash drive is not supportedCheck or replace USB flash drive. Check the file system on the USB flash drive. If the STATE code is displayed all the time notify your local Fronius Service Partner. STATE 732 Initialisation erro – Over current on USB stick STATE 733 No USB flash drive connectedConnect or check the USB flash drive. If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 734 Update file not recognised or not presentCheck update file (e.g. for correct file name). If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 735 Update file does not match the device, update file too oldWarning message appears on the display, update process is interrupted.Check the update file with the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. STATE 736 Write or read error occurredWarning message is shown on the displayCheck USB flash drive and the data contained on it or replace USB flash drive.
Never unplug a USB flash drive if the ‘Data Transmission’ LED is still flashing or lit.
If the STATE code is displayed all the time contact your local Fronius Service Partner. STATE 737 File could not be openedRemove and then reinsert USB flash drive; check or replace USB flash drive STATE 738 Log file cannot be saved (e.g. USB flash drive is write protected or full)Create storage space, remove write protection, check or replace USB stick if necessary.
If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 740 Initialisation error-error in file system on USB flash driveCheck USB flash drive; reformat on PC for FAT12, FAT16 or FAT32. STATE 741 Error during recording of logging dataRemove and then reinsert USB flash drive; check or replace USB flash drive STATE 743 Error occurred during update processRepeat the update process, check USB stick. If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 745 Update file corruptWarning message appears on the display, update process is interrupted.Re-download update file. If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 746 Error occurred during update processWait for 2 minutes, then start the update again. If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 751 Time lostWarning message is shown on the displayReset the time and date on the inverter. Check update file (e.g. for correct file name). If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 752 Real Time Clock module communication error STATE 753 Internal error: Real Time Clock module is in emergency modeTime may be inaccurate or lost (feeding energy into the grid normal) STATE 754-755 Provides information about the processor statusWarning message on the displayIf STATE code is displayed all the time contact your local Fronius Service Partner. STATE 757 Hardware error in the Real Time Clock moduleError message is shown on the display; the inverter is not feeding any energy into the grid. STATE 758 Internal error: Real Time Clock module is in emergency modeTime may be inaccurate or lost (feeding energy into the grid normal).Reset time and date on the inverter STATE 760 Internal hardware errorError message is shown on the display.If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 761-765 Provides information about the internal processor statusWarning message is shown on the display. STATE 766 Emergency power de-rating has been activatedError message is shown on the display. STATE 767 Provides information about the internal processor statusWarning message is shown on the display. STATE 768 Different power limitation in the hardware modules STATE 772 Storage unit not available STATE 773 Software update group 0 (invalid country setup) STATE 775 PMC power stage set not availableWarning message is shown on the display.Press ‘Enter’ key to acknowledge error. If STATE code is displayed all the time contact your local Fronius Service Partner. STATE 776 Invalid device type STATE 781-794 Provides information about the internal processor statusWarning message is shown on the display.If STATE code is displayed all the time contact your local Fronius Service Partner.





Solaredge Fault codes

Solaredge inverter codes page 1





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Solaredge inverter codes page 3





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