Gold Coast Solar Power Solutions are a Fronius Service PartnerGold Coast Solar Power Solutions are a Service Partner for Fronius solar power inverters, so if you’re on the Gold Coast and own a Fronius inverter and it develops a fault you can contact us here and we’ll get your solar power system back in action ASAP.

Gold Coast Solar Power Solutions carry spare parts for Fronius inverters in stock and are trained by Fronius to provide a quick and efficient warranty service, limiting any down time as much as possible. If your inverter is still under warranty the costs will be covered by Fronius.

If you are not on the Gold Coast you can find your local Fronius Service Partner here.

Fronius Primo Inverter STATE CodesView Fronius Primo Manual Here

When a Fronius inverter has a fault it usually comes up with a STATE code to explain what’s wrong; the following table lists the Fronius Primo series inverter STATE codes so you can get an idea on what your Fronius Primo inverter is trying to tell you and what you can do about it.

Fronius Primo Inverter STATE codes

Looking for a Fronius Galvo State Code? Click Here.
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Fronius Primo STATE codes beginning with 1xx

Fronius Primo STATE codes beginning with 1 usually only occur momentarily and are caused by the power from the street (the grid) being outside the inverters operating parameters. The Fronius inverter reacts by disconnecting from the grid and attempts to switch on again after the specified mains monitoring period, as long as no further errors occur during this period. The STATE code is displayed whilst the grid is being checked.

Code
Description
Behaviour
Remedy
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 Primo STATE codes beginning with 3xx

Fronius Primo STATE codes beginning with 3 are status codes that may occur while feeding energy into the grid, but generally do not cause the process to be interrupted for any length of time.

The inverter disconnects automatically from the grid, the grid is then monitored as specified and the inverter attempts to resume feeding energy into the grid.

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Code
Description
Behaviour
Remedy
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

Fronius Primo STATE codes beginning with 4xx

Fronius STATE codes beginning with 4 are error states that require the intervention of a Fronius Service Partner. They are either temporary or lasting and are triggered by faulty hardware or a software problem. Try switching off the Fronius inverter following the system shutdown procedure, leave off for a few minutes then attempt to restart. If the fault continues please contact your local Fronius Service Partner for further assistance.

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Code
Description
Behaviour
Remedy
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 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.
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 firmware with the latest firmware here; if the STATE code persists contact your local Fronius Service Partner
STATE 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.



Fronius Primo STATE codes beginning with 5xx

Fronius Primo STATE codes beginning with 5 generally do not stop the feed in operation of the Fronius Primo inverter. The STATE codes will be displayed until the message is acknowledged by pushing a button on the display (the inverter will work in feed in operation during this time).

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Code
Description
Behaviour
Remedy
STATE 502 Insulation error on the solar panels 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 Acknowledge 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 possible If the status code is displayed all the time notify your local Fronius Service Partner.
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 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 your solar power system installer.
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 If this STATE code keeps recurring contact your solar power system installer.
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. 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 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 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. 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 STATE codes beginning with 7xx

Class 7 STATE codes on Fronius Primo inverters relate to the control system, the configuration and inverter data recording, and may directly or indirectly affect the process of feeding energy into the grid.

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Code
Description
Behaviour
Remedy
STATE 705 Conflict when setting the inverter number (e.g. 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 your local Fronius Service Partner
STATE 731 Initialisation error – USB stick is not supported 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
STATE 733 No USB stick connected 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 Check 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 old Warning 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 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 contact your local Fronius Service Partner.
STATE 738 Log file cannot be saved (e.g. USB stick is write protected or full)t 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 743 Error occurred during update process 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 Warning 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 751 Time lost Warning message is shown on the display 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 your local Fronius Service Partner.
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. 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)..
STATE 766 Emergency power de-rating has been activated Error message is shown on the display.



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