Fronius Primo Fault Codes

Fronius Primo codes beginning with 1xx

Code
Description
Behaviour
Remedy
STATE 102AC 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 103AC voltage too low
STATE 105AC frequency too high
STATE 106AC frequency too low
STATE 107AC grid outside the permissible limits
STATE 108Stand alone operation detected
STATE 112RCMU error

Fronius Primo codes beginning with 3xx

Code
Description
Behaviour
Remedy
STATE 301Overcurrent (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 302Overcurrent (DC)
STATE 303Power stage set 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 304Internal temperature too high
STATE 306LOW 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 307LOW PV VOLTAGE
DC input voltage too low for feeding energy into the grid
STATE 308Intermediate circuit overvoltageShort 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 309DC input voltage MPPT 1 too high
STATE 313

DC input voltage MPPT 2 too high

Fronius Primo codes beginning with 4xx

Code
Description
Behaviour
Remedy
STATE 401No communication with power stage set possibleThe 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 406Power stage set temperature sensor faulty
STATE 407Internal temperature sensor faulty
STATE 408DC feeding into the grid detected
STATE 412Fixed voltage mode has been selected instead of MPP voltage mode and the fixed voltage has been set to too low or too high a valueIf this STATE code persists contact your solar power system installer
STATE 415Safety 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 416No 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 417Hardware ID problem
STATE 419Unique ID conflict
STATE 421HID range error
STATE 425No communication possible with the power stage set
STATE 426-428Possible hardware fault
STATE 431Software problemThe 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 436Functional 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 437Power stage set problem
STATE 438Functional 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 443Intermediate 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 445Invalid limit value settingsThe 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 447Insulation faultIf this status code is displayed all the time: notify a local Fronius Service Partner
STATE 448Neutral conductor not connected
STATE 450Guard cannot be found
STATE 452Memory 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 452Communication error between the processors
STATE 453Short term grid voltage error
STATE 454Short term grid frequency error
STATE 456Anti-islanding function is no longer implemented correctly
STATE 457Grid relay stickingThe inverter is not feeding any energy into the grid.Contact your local Fronius Service Partner.
STATE 459Error when recording the measuring signal for the insulation test
STATE 460Reference voltage source for the digital signal processor (DSP) is working out of tolerance
STATE 461Fault in the DSP data memory
STATE 462Error with DC feed monitoring routine
STATE 463Reversed AC polarity, AC connector inserted incorrectly
STATE 474RCMU sensor faultyIf this STATE code keeps recurring, contact your solar power system installer
STATE 475Solar panel ground fault, insulation fault (connection between solar panel and ground)
STATE 476Driver supply voltage too low
STATE 480, 481Functional 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
STATE 482Startup incompletePerform AC reset (turn AC circuit breaker off and on), complete startup.
STATE 483Voltage 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.

Fronius Primo codes beginning with 5xx 

Code
Description
Behaviour
Remedy
STATE 502Insulation error on the solar panelsWarning message is shown on the displayIf this STATE code keeps recurring, contact your solar power system installer.
STATE 509No 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 515No communication with filter possibleIf the status code is displayed all the time notify your local Fronius Service Partner.
STATE 516No communication possible with the storage unitStorage unit warning message.
STATE 517Derating 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 522DC1 Input Voltage too lowThe DC voltage on input 1 of the inverter is too lowCheck voltage & polarity on input 1 of the inverter. If this STATE code keeps recurring please contact your solar power system installer.
STATE 523DC2 Input Voltage too lowThe DC voltage on input 2 of the inverter is too lowCheck 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 your solar power system installer.
STATE 558Functional 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 inverterIf this STATE code keeps recurring contact your solar power system installer.
STATE 560Derating 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 566Arc 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 567Grid 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

Fronius Primo codes beginning with 7xx

Code
Description
Behaviour
Remedy
STATE 705Conflict when setting the inverter number (e.g. number already assigned)Correct the inverter number via the setup menu
STATE 721EEPROM has been reinitialised or EEPROM is faultyWarning message is shown on the displayAcknowledge STATE code; If the STATE code is displayed all the time contact your local Fronius Service Partner
STATE 731Initialisation error – USB stick is not supportedCheck 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 732Over current on USB stick
STATE 733No USB stick connectedConnect or check the USB stick. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 734Update 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 735Update file does not match the device, update file too oldWarning message appears on the display, update process is interrupted.Update the inverter firmware with the latest firmware here; if the STATE code is displayed all the time after the firmware update contact your local Fronius Service Partner. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 736Write or read error occurredWarning message is shown on the displayCheck 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 contact your local Fronius Service Partner.
STATE 738Log file cannot be saved (e.g. USB stick is write protected or full)tCreate 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 743Error 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 745Update file corruptWarning message appears on the display, update process is interrupted.Redownload the with the latest firmware here. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 751Time 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 752Real Time Clock module communication error
STATE 757Hardware error in the Real Time Clock moduleError message is shown on 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 758Internal error: Real Time Clock module is in emergency modeTime may be inaccurate or lost (feeding energy into the grid normal)..
STATE 766Emergency power de-rating has been activatedError message is shown on the display.

 

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