Fronius Primo codes beginning with 1xx


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 codes beginning with 3xx



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 codes beginning with 4xx



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 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
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 codes beginning with 5xx 



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.


Fronius Primo codes beginning with 7xx



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.