| 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 | 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 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. | Check grid connections: If this STATE code keeps recurring contact your solar power system installer.
|
| 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. | Check grid connections: If this STATE code keeps recurring contact your solar power system installer.
|
| STATE 107 | 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. | Check grid connections: If this STATE code keeps recurring contact your solar power system installer.
|
| 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. | Check grid connections: If this STATE code keeps recurring contact your solar power system installer.
|
| 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. | Check grid connections: If this STATE code keeps recurring contact your solar power system installer.
|
| ---------- | ----------------------- | 3xx------------------------------------------------------------------------------------ | ------------------------------------------------------------------------ |
| STATE 301 | Over current (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 | Over current (DC) | 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 303 | Power stage set over temperature | Short-term interruption while feeding energy into the grid due to over temperature in the inverter. 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 | Short-term interruption while feeding energy into the grid due to over temperature in the inverter. 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 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 sunlight, contact your solar power system installer. IMPORTANT! Due to the low level of sunlight early in the morning and evening, the STATE code 306 (LOW PV OUTPUT) & 307 (LOW PV VOLTAGE) are displayed routinely at these times of the 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 | 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 sunlight, contact your solar power system installer. IMPORTANT! Due to the low level of sunlight early in the morning and evening, the STATE code 306 (LOW PV OUTPUT) & 307 (LOW PV VOLTAGE) are displayed routinely at these times of the day. These STATE codes do not indicate any kind of fault. |
| STATE 308 | Intermediate circuit overvoltage | Short term interruption while feeding energy into the grid | Fault is rectified automatically; if this STATE code is displayed all the time; notify your local Fronius Service Partner |
| STATE 309 | DC input voltage MMPT 1 too high | Short term interruption while feeding energy into the grid | Fault is rectified automatically; if this STATE code is displayed all the time; notify your local Fronius Service Partner |
| STATE 313 | DC input voltage MMPT 2 too high | Short term interruption while feeding energy into the grid | Fault is rectified automatically; if this STATE code is displayed all the time; notify your local Fronius Service Partner |
| STATE 318 | Reverse DC current | Solar module return current detected | If the STATE code is displayed all the time, contact your local Fronius Service Partner |
| ---------- | ----------------------- | 4xx----------------------------------------------------------------------------------- | ------------------------------------------------------------------------ |
| 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 | 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 407 | Internal temperature sensor faulty | 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 408 | DC feeding into the grid 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, contact your local Fronius Service Partner |
| STATE 412 | Fixed voltage mode has been selected instead of MPP voltage mode and the fixed voltage has been set too low or too high a value | | If this STATE code persists contact your local solar power 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 | If the STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 417 | Hardware ID problem | The inverter will automatically attempt to reconnect 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 419 | Unique ID conflict | The inverter will automatically attempt to reconnect 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 421 | HID range error | The inverter will automatically attempt to reconnect 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 425 | No communication possible with the power stage set | The inverter will automatically attempt to reconnect 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 426 - 428 | Possible hardware fault | The inverter will automatically attempt to reconnect 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 431 | Software problem | The inverter is not feeding energy into the grid | Carry out an AC reset (switch the AC circuit breaker off and on); update the firmware; if this STATE code is displayed all the time, please contact you local Fronius Service Partner |
| STATE 436 | Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, eg. 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 STATE code is displayed all the time, please contact your local Fronius Service Partner |
| STATE 437 | Power stage set problem | The inverter will automatically attempt to connect again and if possible will resume feeding energy into the grid | Update the inverter firmware; if this STATE code is displayed all the time, please contact your local Fronius Service Partner |
| STATE 438 | Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, eg. 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 STATE code is displayed all the time, please contact your local Fronius Service Partner |
| STATE 443 | Intermediate circuit voltage too low or asymmetric | 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 445 | Invalid limit value settings | The inverter is not feeing any energy into the grid for safety reasons | Update the inverter firmware with the latest firmware; if the STATE code is displayed all the time after firmware update, contact your local Fronius Service Partner |
| STATE 447 | Insulation fault | The inverter is not feeing any energy into the grid for safety reasons | If the STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 448 | Neutral conductor not connected | The inverter is not feeing any energy into the grid for safety reasons | If the STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 450 | Guard cannot be found | The inverter is not feeing any energy into the grid for safety reasons | If the STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 451 | 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, contact your local Fronius Service Partner |
| STATE 452 | Communication error between the processors | 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 453 | Short term grid voltage error | 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 454 | Short term grid frequency error | 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 456 | Anti-islanding function is no longer implemented correctly | 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 457 | Grid relay sticking | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 459 | Error when recording the measuring signal for the insulation test | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 460 | Reference voltage source for the digital signal processor (DSP) is working out of tolerance | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 461 | Fault in the DSP data memory | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 462 | Error with DC feed monitoring routine | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 463 | Reversed AC polarity, AC connector inserted incorrectly | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 474 | RCMU sensor faulty | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 475 | Solar panel ground fault, insulation fault (connection between solar panel and ground) | The inverter is not feeding any energy into the grid | Contact you local Fronius Service Partner |
| STATE 476 | Driver supply voltage too low | The inverter is not feeding any energy into the grid | If the State code keeps recurring, contact your local Fronius Service Partner |
| STATE 480 & 481 | Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, eg. after a PC board have been replaced) | The inverter is not feeding any energy into the grid | Update the inverter firmware with the latest firmware; if the STATE code persist, contact your local Fronius Service Partner |
| STATE 482 | Startup incomplete | The inverter is not feeding any energy into the grid | Perform AC reset (turn AC circuit breaker off and on), complete startup |
| STATE 483 | Voltage UDC fixed on MPPT 2 string out of limits | The inverter is not feeding any energy into the grid | Check the MPP settings; if the STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 485 | CAN transmit buffer is full | The inverter is not feeding any energy into the grid | 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 |
| ---------- | ----------------------- | 5xx------------------------------------------------------------------------------------ | ------------------------------------------------------------------------ |
| STATE 502 | Insulation error | Warning message is shown on the display | If this STATE code keeps recurring, contact your solar power system installer |
| STATE 509 | No energy fed into the grid in the past 24 hours | Warning message is shown on the display | Acknowledge STATE code; check weather all the conditions for the problem are free feeding of energy into the grid have been met. If the STATE code is displayed all he time; look out for further STATE codes |
| STATE 515 | No communication with filter possible | Warning message is shown on the display | If the STATE code is displayed all the time, notify your local Fronius Service Partner |
| STATE 516 | No communication with the storage unit | Warning message is shown on the display | If the STATE code is displayed all the time, notify your local Fronius Service Partner |
| STATE 517 | Derating caused by too high a temperature | When power derating occurs, a warning message is shown on the display | Purge 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 522 | DC1 input voltage too low | The DC voltage on input 1 of the inverter is too low | Check voltage & polarity on input 1 of the inverter. If this STATE code keeps recurring, please contact your solar power system installer |
| STATE 523 | DC2 input voltage too low | The DC voltage on input 2 of the inverter is too low | Check voltage & polarity on input 2 of the inverter. Check MPP settings/voltage at the "Installer Menu Basic". If this STATE code keeps recurring, please contact you solar power system installer |
| STATE 558 | Functional incompatibility (one or more PC boards in the inverter are not compatible with each other, EG. after a PC board have been replaced) | Possible error displays or malfunction on the inverter | If this STATE code keeps recurring, contact your solar power system installer |
| STATE 560 | Derating caused by over-frequency | This STATE code is display 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 keeps recurring, contact your solar power system installer |
| STATE 566 | Arc detector switched off (eg. during external arc monitoring) | The STATE code is displayed every day until the are detector is reactivated | No error, Confirm STATE code by pressing "ENTER" |
| 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 reduce the voltage rise at the inverters terminals. This mode must be enabled by default in accordance with the Australian Standards. | Acknowledge STATE code; if this STATE code keeps recurring, contact you local solar power system installer |
| ---------- | ----------------------- | 7xx------------------------------------ | ------------------------ |
| STATE 705 | Conflict when setting the inverter number (eg. number already assigned) | | Correct the inverter number via the setup menu |
| STATE 721 | EEPROM has been reinitialised or EEPROM is faulty | Warning message is shown on the display | Acknowledge STATE code; If the STATE code is displayed all the time, contact you local Fronius Service Partner |
| STATE 731 | Initialisation error - USB stick is no supported | Warning message is shown on the display | Check or replace USB stick. Check the file system on the USB stick. If the STATE code is displayed all the time, notify your local Fronius Service Partner |
| STATE 732 | Over current on USB stick | Warning message is shown on the display | Check or replace USB stick. Check the file system on the USB stick. If the STATE code is displayed all the time, notify your local Fronius Service Partner |
| STATE 733 | No USB stick connected | Warning message is shown on the display | Connect or check the USB stick. If STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 734 | Update file not recognised or not present | Warning message is shown on the display | Check update file (eg. 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 old | Warning message appears on the display, update process is interrupted | Update the inverter firmware; 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 occurred | Warning message is shown on the display | Check USB stick and the data contained on it or replace USB stick. Never unplug a USB stick 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 738 | Log file cannot be saved (eg. USB stick is write protected or full) | Warning message is shown on the display | Create storage space, remove write protection, check or replace USB stick if necessary. If STATE code is displayed all the time, contact you local Fronius Service Partner |
| STATE 743 | Error occurred during update process | Warning message is shown on the display | Repeat the update process, check USB stick. If STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 745 | Update file corrupt | Waring message appears on the display, update process is interrupted | Redownload the latest firmware. If STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 751 | Time lost | Warning message is shown on the display | Reset the time and date on the inverter. Check update file (eg. 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 | Warning message is shown on the display | Reset the time and date on the inverter. Check update file (eg. for correct file name). If STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 757 | Hardware error in the Real Time Clock module | Error message is shown in the display, the inverter is not feeding any energy into the grid | If STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 758 | Internal error; Real Time Clock module is in emergency mode | Time may be inaccurate or lost (feeding energy into the grid normal) | If STATE code is displayed all the time, contact your local Fronius Service Partner |
| STATE 766 | Emergency power derating has been activated | Error message shown in the display | If STATE code is displayed all the time, contact your local Fronius Service Partner |
