FRONIUS-error codes
Below you will find a list of common error messages from various brands. Not all error messages are listed here. It is advisable to also consult the manual of the device.| Brands | Error code | Cause | Action |
|---|---|---|---|
| Fronius | STATE 101 | AC voltage out of range | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | 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. If constant, Contact inverter service |
| Fronius | STATE 103 | AC voltage too low | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 104 | AC frequency out of range | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 105 | AC frequency 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. If constant, Contact inverter service |
| Fronius | STATE 106 | AC frequency too low | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 107 | AC grid outside the permissible limits | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 108 | Stand alone operation detected | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 112 | RCMU error | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 201 | 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. If constant, Contact inverter service |
| Fronius | STATE 202 | AC voltage too low | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 203 | AC frequency 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. If constant, Contact inverter service |
| Fronius | STATE 204 | AC frequency too low | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 205 | Grid failure | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 206 | Grid failure | Following careful testing and when the grid conditions are within the permissible range again, the inverter will resume feeding energy into the grid. If constant, Contact inverter service |
| Fronius | STATE 207 | Relay error | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 208 | Relay error | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 301 | Overcurrent (AC) | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 302 | Overcurrent (DC) | The inverter resumes with its startup routine. |
| Fronius | STATE 303 | DC module over temperature | Visual check: cooling circuit air supply. If the blockage cannot be rectified, Contact inverter service |
| Fronius | STATE 304 | AC module over temperature | Visual check: cooling circuit air supply. If the blockage cannot be rectified, Contact inverter service |
| Fronius | STATE 305 | No power being fed in, despite closed relay | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 306 | PV output too low for feeding energy into the grid | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 307 | LOW PV VOLTAGE | The inverter resumes with its startup routine. DC input voltage too low for feeding energy into the grid. 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. Contact inverter service |
| Fronius | STATE 308 | Intermediate circuit voltage too high | Do nothing. The inverter will acknowledge the error automatically. If problem occurs repeatedly, Contact inverter service |
| Fronius | STATE 309 | DC input voltage MPPT 1 too high | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 311 | Polarity of DC strings reversed | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 313 | DC input voltage MPPT 2 too high | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 314 | Current sensor calibration timeout | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 315 | AC current sensor erro | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 316 | Interrupt Check fail | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 325 | Overtemperature in the connection area | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 326 | Fan 1 error | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 327 | Fan 2 error | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 401 | No communication possible with the power stage set | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 406 | AC module temperature sensor faulty (L1) | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 407 | AC module temperature sensor faulty (L2) | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 408 | DC component measured in the grid too high | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | 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 | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 415 | Safety cut out via option card or RECERBO has triggered | If constant, Contact inverter service |
| Fronius | 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. |
| Fronius | STATE 417 | Hardware ID problem | Please arrange for inverter service to perform an update. |
| Fronius | STATE 419 | Unique ID conflict | If constant, Contact inverter service |
| Fronius | STATE 420 | No communication possible with the Hybrid manager | If constant, Contact inverter service |
| Fronius | STATE 421 | HID range error | If constant, Contact inverter service |
| Fronius | STATE 425 | No communication with the power stage set possible | If constant, Contact inverter service |
| Fronius | STATE 426-428 | Possible hardware fault | If constant, Contact inverter service |
| Fronius | STATE 431 | Software problem | 1.) Switch off device with DC disconnector and AC Fuse 2.) Wait until the display has turned off completely. 3.) Switch on device with DC and AC disconnector. If this does not rectify the error, Contact inverter service |
| Fronius | 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. | Please arrange for inverter service to perform an update. |
| Fronius | STATE 437 | Power stage set problem | Please arrange for inverter service to perform an update. |
| Fronius | 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) | Please arrange for inverter service to perform an update. |
| Fronius | STATE 443 | Intermediate circuit voltage too low or asymmetric | If constant, Contact inverter service |
| Fronius | STATE 445 | Compatability error (e.g. due to replacement of a PC board) – invalid power stage set configuration | Please arrange for inverter service to perform an update. |
| Fronius | STATE 447 | Insulation fault | Arrange for the system isolation to be checked by an electrician. If you consider the isolation to be in order, Contact inverter service |
| Fronius | STATE 448 | Neutral conductor not connected | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 450 | Guard cannot be found | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 451 | Memory error detected | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 452 | Communication error between the processors | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 453 | Grid voltage and power stage set are incompatible | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 454 | Grid frequency and power stage set are incompatible | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 456 | Anti-islanding function is no longer implemented correctly | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 457 | Grid relay sticking or the neutral conductor ground voltage is too high | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 458 | Error when recording the measuring signal | If constant, Contact inverter service |
| Fronius | STATE 459 | Error when recording the measuring signal for the insulation test | If constant, Contact inverter service |
| Fronius | STATE 460 | Reference voltage source for the digital signal processor (DSP) is working out of tolerance | If constant, Contact inverter service |
| Fronius | STATE 461 | Fault in the DSP data memory | If constant, Contact inverter service |
| Fronius | STATE 462 | Error with DC feed monitoring routine | If constant, Contact inverter service |
| Fronius | STATE 463 | Reversed AC polarity, AC connector inserted incorrectly | If constant, Contact inverter service |
| Fronius | STATE 474 | RCMU sensor faulty | If constant, Contact inverter service |
| Fronius | STATE 475 | Solar panel ground fault, insulation fault (connection between solar panel and ground) | If constant, Contact inverter service |
| Fronius | STATE 476 | Driver supply voltage too low | If constant, Contact inverter service |
| Fronius | 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) | Please arrange for inverter service to perform an update. |
| Fronius | STATE 482 | Setup after the initial start-up was interrupted | 1.) Switch off device with DC disconnector and AC Fuse 2.) Wait until the display has turned off completely. 3.) Switch on device with DC and AC disconnector. If this does not rectify the error, Contact inverter service |
| Fronius | STATE 483 | Voltage UDC fixed on MPP2 string out of limits | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 485 | CAN transmit buffer is full | 1.) Switch off device with DC disconnector and AC Fuse 2.) Wait until the display has turned off completely. 3.) Switch on device with DC and AC disconnector. If this does not rectify the error, Contact inverter service |
| Fronius | STATE 502 | Insulation error on the solar panels | Warning message is shown on the display |
| Fronius | STATE 509 | No energy fed into the grid in the past 24 hours | If constant, Contact inverter service |
| Fronius | STATE 515 | No communication with filter possible | If constant, Contact inverter service |
| Fronius | STATE 516 | No communication possible with the storage unit | If constant, Contact inverter service |
| Fronius | STATE 517 | Power derating caused by too high a temperature | Visual check: cooling circuit air supply. If the blockage cannot be rectified, Contact inverter service |
| Fronius | STATE 518 | Internal DSP malfunction | If constant, Contact inverter service |
| Fronius | STATE 519 | No communication possible with the storage unit | If constant, Contact inverter service |
| Fronius | STATE 520 | No energy fed into the grid by MPPT1 in the past 24 hours | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 522 | DC low string 1 | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | STATE 523 | DC low string 2 | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Fronius | 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) | Please arrange for inverter service to perform an update. |
| Fronius | STATE 560 | Derating caused by over-frequency | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | 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) | Please arrange for inverter service to perform an update. |
| Fronius | 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. Confirm status code by pressing ‘Enter’. |
| Fronius | 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. |
| Fronius | STATE 601 | CAN bus is full | Please arrange for inverter service to perform an update. |
| Fronius | STATE 603 | AC module temperature sensor faulty (L3) | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 604 | DC module temperature sensor faulty | Fault is rectified automatically; if this STATE code is displayed all the time: notify your local Fronius service partner, Contact inverter service„ |
| Fronius | STATE 607 | RCMU error | 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. |
| Fronius | 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) | Please arrange for inverter service to perform an update. |
| Fronius | STATE 701-716 | Provides information about the internal processor status | If constant, Contact inverter service |
| Fronius | STATE 721 | EEPROM has been re-initialised | If constant, Contact inverter service |
| Fronius | STATE 722-730 | Provides information about the internal processor status | If constant, Contact inverter service |
| Fronius | STATE 731 | Initialisation error – USB flash drive is not supported | Check or replace USB flash drive. Check the file system on the USB flash drive. If the STATE code is displayed all the time, Contact inverter service |
| Fronius | STATE 732 | Initialisation erro – Over current on USB stick | Connect or check the USB flash drive. If STATE code is displayed all the time Contact inverter service |
| Fronius | STATE 733 | No USB flash drive connected | Connect or check the USB flash drive. If STATE code is displayed all the time Contact inverter service |
| Fronius | STATE 734 | Update file not recognised or not present | Check update file (e.g. for correct file name). |
| Fronius | STATE 735 | Update file does not match the device, update file too old | Check update file (e.g. for correct file name). |
| Fronius | STATE 736 | Write or read error occurred | Check USB flash drive and the data contained on it or replace USB flash drive. |
| Fronius | STATE 737 | File could not be opened | Remove and then reinsert USB flash drive; check or replace USB flash drive |
| Fronius | 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. |
| Fronius | STATE 740 | Initialisation error-error in file system on USB flash drive | Check USB flash drive; reformat on PC for FAT12, FAT16 or FAT32. |
| Fronius | STATE 741 | Error during recording of logging data | Remove and then reinsert USB flash drive; check or replace USB flash drive |
| Fronius | STATE 743 | Error occurred during update process | Repeat the update process, check USB stick. If STATE code is displayed all the time Contact inverter service |
| Fronius | STATE 745 | Update file corrupt | Re-download update file. If STATE code is displayed all the time Contact inverter service |
| Fronius | STATE 746 | Error occurred during update process | Wait for 2 minutes, then start the update again. If STATE code is displayed all the time Contact inverter service |
| Fronius | STATE 751 | Time lost | Reset 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 inverter service |
| Fronius | STATE 752 | Real Time Clock module communication error | Warning message on the display |
| Fronius | STATE 753 | Internal error: Real Time Clock module is in emergency mode | Time may be inaccurate or lost (feeding energy into the grid normal) |
| Fronius | STATE 754-755 | Provides information about the processor status | If STATE code is displayed all the time Contact inverter service |
| Fronius | 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. |
| Fronius | STATE 758 | Internal error: Real Time Clock module is in emergency mode | Reset time and date on the inverter |
| Fronius | STATE 760 | Internal hardware error | If STATE code is displayed all the time Contact inverter service |
| Fronius | STATE 761-765 | Provides information about the internal processor status | Warning message is shown on the display. |
| Fronius | STATE 766 | Emergency power de-rating has been activated | Error message is shown on the display. |
| Fronius | STATE 767 | Provides information about the internal processor status | Warning message is shown on the display. |
| Fronius | STATE 768 | Different power limitation in the hardware modules | Contact inverter service |
| Fronius | STATE 772 | Storage unit not available | Warning message is shown on the display. |
| Fronius | STATE 773 | Software update group 0 (invalid country setup) | Warning message is shown on the display. |
| Fronius | STATE 775 | PMC power stage set not available | Press ‘Enter’ key to acknowledge error. If STATE code is displayed all the time Contact inverter service |
| Fronius | STATE 781-794 | Provides information about the internal processor status | If STATE code is displayed all the time Contact inverter service |
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