Fronius Agilo Inverter Status Error Codes

Fronius Agilo Inverter State Error Codes

If your solar system uses a Fronius inverter and it develops a fault, contact AC Gold and we’ll get your solar PV system back up and generating electricity.

If your Fronius inverter is still under warranty, the cost of repairing or replacing it will be covered by Fronius.

Download Fronius Agilo Solar Inverter Manual.

When a Fronius inverter develops a fault, it usually displays a status code to explain what is wrong. The following table lists the Fronius Galvo series inverter status codes so you can learn what your Fronius Galvo inverter is telling you and how to fix it.

Looking for another Fronius Inverter Error Code? Fronius Galvo error code | Fronius ECO error code | Fronius Fronius Primo error code | Fronius SYMO error code | Fronius IG error code

Class 1 Fronius status codes:

Class 1 status codes generally only arise momentarily and are caused by the public grid.

The initial response of the inverter in this case is to disconnect itself from the grid. The grid is subsequently checked for the stipulated monitoring period. If no further problem has been detected by the end of this period, then the inverter will resume feeding energy into the grid.

Depending on the country setup, the SoftStart-function GPIS is activated: after cutting out due to an AC fault, the output power of the inverter is continuously increased by 10% every minute in line with the VDE-AR-N 4105 guideline.


Error Code Description Behaviour Solution
102 AC Voltage too high Grid conditions are being tested. As soon as they are within the permissible range again, the inverter will resume exporting energy into the grid. Check grid connections. If this status code keeps recurring, contact your system installer
103 AC voltage too low
105 AC frequency too high
106 AC frequency too low
107 No AC grid detected
108 Stand alone operation detected

Class 3 Fronius status codes:

Class 3 includes 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.

Error Code Description Details Rectification
301 Over-current (AC) Brief interruption of grid power feed operation due to overcurrent in the inverter. The inverter returns to the startup phase. Error is automatically rectified; if status code persists: contact a Fronius-trained service technician.
303 Power module over temperature
Short-term interruption while feeding energy into the grid due to
over temperature.
The inverter resumes with its startup routine
Purge cooling air openings and heat sink if necessary;
fault is rectified automatically
If this status code keeps recurring, contact your system engineer
304 Interior temperature too high
305 If the grid relay is closed, no energy is transferred to the grid. Permanent interruption while feeding energy into the grid If this status code keeps recurring, contact your system engineer
307 (DC LOW) 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 status code keeps recurring, contact your system engineer
IMPORTANT! Due to the low level of insolation early in the morning and in the evening, the status code 307 (DC low) is routinely displayed at these times of day. This status code does not indicate any kind of fault.
309 DC input voltage too high Short-term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically. If this status code keeps recurring, contact your system engineer
321 Overcurrent (AC) Short-term interruption while feeding energy into the grid due to a grid fault or a power module fault. The inverter resumes with its startup routine. Fault is rectified automatically. If this status code keeps recurring, contact your system engineer.
322 Over temperature on the air intake sensor Permanent interruption while feeding energy into the grid. Reduce the ambient temperature and ensure that a suitable hot air extractor is installed if necessary. If this status code keeps recurring, contact your system engineer

Class 4 Fronius status codes:

Some of the class 4 status codes necessitate intervention by a Fronius-trained service engineer.

Error Code Description Behaviour Solution
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 status code is displayed all the time: notify a Fronius trained service engineer
406 Power module temperature sensor defective The inverter is disconnected from the grid for safety reasons. If the status code is displayed all the time: notify a Fronius trained service engineer
407 Internal temperature sensor defective The inverter is disconnected from the grid for safety reasons. If the status code is displayed all the time: notify a Fronius trained service engineer
412 Fixed voltage mode has been selected instead of MPP voltage mode, and the fixing voltage has been set at too low or too high a value. The fixed voltage is lower than the current MPP voltage. Check module voltage and change the connection of the solar modules if the input voltage is too high; If the status code appears all the time: notify a Fronius-trained service engineer
415 External Emergency Stop line is blocked The inverter is disconnected from the grid for safety reasons. Fault is rectified automatically; If this status code keeps recurring: notify a Fronius-trained service engineer
416 No communication possible between power stage set and control system The inverter is disconnected from the grid for safety reasons If the status code is displayed all the time: notify a Fronius trained service engineer
425 No communication possible with the power module The inverter is disconnected from the grid for safety reasons and then attempts a restart. If the status code is displayed all the time: notify a Fronius trained service engineer
426 Intermediate circuit charging takes too long Short-term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically. If this status code keeps recurring, contact your system engineer
427 Power stage set not ready for too long (timeout) Short-term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically. If this status code keeps recurring, contact your system engineer
431 Bootloading process interrupted The inverter is in bootloading mode and is not feeding any energy into the grid Repeat the update process. If the status code is displayed all the time: notify a Fronius trained service engineer
436 Receiving incorrect fault information from the power stage set Short-term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically. If this status code keeps recurring, contact your system engineer
437 General error handling started in the power stage set Short-term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically. If this status code keeps recurring, contact your system engineer
438 Receiving incorrect fault information from the power stage set Short-term interruption while feeding energy into the grid. The inverter resumes with its startup routine. Fault is rectified automatically. If this status code keeps recurring, contact your system engineer
445 Compatibility error (e.g. due to replacement of a PC board). Invalid power stage set configuration The inverter is not feeding any energy into the grid. Update the inverter firmware; If the status code is displayed all the time: notify a Fronius trained service engineer
457 Mains relay sticking The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
459 Error when recording the measurement signal for the insulation test The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
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. If the status code is displayed all the time: notify a Fronius trained service engineer
461 Fault in the DSP data memory The inverter is not feeding any energy into the grid. If the status code is displayed all the time: notify a Fronius trained service engineer
463 AC polarity reversed The inverter is not feeding any energy into the grid. Update the inverter firmware. If the status code is displayed all the time: notify a Fronius trained service engineer
472 Fuse for solar module grounding is faulty The inverter is not feeding any energy into the grid. Replace fuse for solar module grounding – notify a Fronius trained service engineer;
if this status code keeps recurring, contact your system engineer
475 Solar module grounding, insulation fault (connection between solar module and ground) The inverter is disconnected from the grid for safety reasons. If the status code is displayed all the time: notify a Fronius trained service engineer
486 External NO contact is open. Optional measuring and monitoring relay has tripped The inverter is not feeding any energy into the grid. Close external NO contact; check measuring and monitoring relay. If this status code keeps recurring, contact your system engineer
487 Air inlet temperature sensor is faulty The inverter is not feeding any energy into the grid. Replace air inlet temperature sensor – notify a Fronius-trained service engineer
488 AC measurement device is faulty The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
490, 491 Internal communication error The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
492 DC main switch is switched off The inverter is not feeding any energy into the grid. Switch on DC main switch
493 DC relay is faulty The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
494 Grounding fault on the control board The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
495 The 3 V supply voltage on the control board is faulty The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
496 The 5 V supply voltage on the control board is faulty The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
497 The 14 V or 22 V supply voltage for the PWM driver is faulty The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
498 The 24 V supply voltage for the power electronics is faulty The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer
499 The 24 V supply voltage on the control board is faulty The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer

Class 5 Fronius status codes:

Class 5 status codes do not generally interfere with feeding energy into the grid, but can cause restrictions. A status code is displayed until it is acknowledged by pressing a key (the inverter, however, continues to operate normally in the background).

Error Code Description Behaviour Solution
502 Insulation error on the solar modules Warning message is shown on the display If the status code is displayed all the time: notify a Fronius trained service engineer
509 No energy fed into the grid in the past 24 hours Warning message is shown on the display Check that all the conditions for feeding energy into the grid without any problems have been satisfied. If the status code is displayed all the time: notify a Fronius trained service engineer
516 No communication possible with the storage unit Storage unit warning message If the status indicator appears all the time: notify a Fronius trained service engineer
517 Power derating caused by too high a temperature Warning message when power derating occurs If the status indicator appears all the time: notify a Fronius trained service engineer
518 Internal DSP malfunction Warning message is shown on the display If the status indicator appears all the time: notify a Fronius trained service engineer
535 Error during fan self-test Warning message is shown on the display If the status indicator appears all the time: notify a Fronius trained service engineer
536 Main fan error Warning message is shown on the display If the status indicator appears all the time: notify a Fronius trained service engineer
551 Fuse for solar module grounding is faulty Warning message is shown on the display Replace fuse for solar module grounding – notify a Fronius trained service engineer; if this status code keeps recurring, contact your system engineer
555 Circulating fan error Warning message is shown on the display If the status indicator appears all the time: notify a Fronius trained service engineer
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 device errors or malfunctions on the inverter

Update the inverter firmware using the Fronius Solar.update software; the latest inverter firmware is available from http://www.fronius.com.

If the status indicator appears all the time: notify a Fronius trained service engineer

560 Power derating caused by overfrequency

The status code is displayed from a grid frequency of 50.2 Hz and above.
The inverter reduces the power along a 40%/Hz slope. The inverter switches off at a grid frequency of 51.5 Hz.

The status indicator is displayed until the inverter returns to normal operation.

From a frequency of 50.2 Hz and above, the inverter tries to reconnect to the grid.
The fault is rectified automatically as soon as the inverter returns to normal operation.

If the status indicator appears all the time: notify a Fronius trained service engineer

597 External overvoltage protection has tripped (connected to the "IN1" NO/alarm contact terminals) Warning message is shown on the display Replace overvoltage protection – notify a Fronius-trained service engineer
598 External overvoltage protection has tripped (connected to the "IN2" NO/alarm contact terminals) Warning message is shown on the display Replace overvoltage protection – notify a Fronius-trained service engineer
599 External overvoltage protection has tripped (connected to the "IN3" NO/alarm contact terminals) Warning message is shown on the display Replace overvoltage protection – notify a Fronius-trained service engineer

Class 7 Fronius status codes:

Class 7 status codes 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.

Error Code Description Behaviour Solution
701 – 716 Provides information about the internal processor program status Is of no concern when the inverter is working properly and only appears in the "Status PS" setup parameter. In the event of an actual error, this status code supports Fronius TechSupport during the error analysis.  
721 EEPROM has been re-initialised Warning message is shown on the display If the status code is displayed all the time: notify a Fronius trained service engineer
722 – 730 Provides information about the internal processor program status Is of no concern when the inverter is working properly and only appears in the "Status PS" setup parameter. In the event of an actual error, this status code supports Fronius TechSupport during the error analysis.  
751 Time lost Warning message is shown on the display Reset the time and date. If the status code is displayed all the time: notify a Fronius trained service engineer
752 Real Time Clock module faulty Warning message is shown on the display Reset the time and date. If the status code is displayed all the time: notify a Fronius trained service engineer
753 Time not set for a long period (> 1/2 year) Warning message is shown on the display Reset the time and date. If the status code is displayed all the time: notify a Fronius trained service engineer
754, 755 Provides information about the internal processor program status Is of no concern when the inverter is working properly and only appears in the "Status PS" setup parameter. In the event of an actual error, this status code supports Fronius TechSupport during the error analysis.  
757 Hardware error in the Real Time Clock module Warning message is shown on the display; the inverter is not feeding any energy into the grid If the status code is displayed all the time: notify a Fronius trained service engineer
761 – 765 Provides information about the internal processor program status Is of no concern when the inverter is working properly and only appears in the "Status PS" setup parameter. In the event of an actual error, this status code supports Fronius TechSupport during the error analysis.  
766 Emergency derating has been activated (max. 750 W) Warning message is shown on the display

If the status code is displayed all the time: notify a Fronius trained service engineer

767 Provides information about the internal processor program status

Is of no concern when the inverter is working properly and only appears in the "Status PS" setup parameter. In the event of an actual error, this status code supports Fronius TechSupport during the error analysis.

 

 

768 Different power derating in the hardware modules Warning message is shown on the display If the status code is displayed all the time: notify a Fronius trained service engineer
772 Storage unit not available Warning message is shown on the display If the status code is displayed all the time: notify a Fronius trained service engineer
773 Software update group 0 (invalid country setup) Warning message is shown on the display If the status code is displayed all the time: notify a Fronius trained service engineer
775 PMC power stage set not available Warning message is shown on the display Press the ‘Enter’ key to acknowledge the error. If the status code is displayed all the time: notify a Fronius trained service engineer
776 Invalid device-type Warning message is shown on the display Press the ‘Enter’ key to acknowledge the error. If the status code is displayed all the time: notify a Fronius trained service engineer
781 – 794 Provides information about the internal processor program status Is of no concern when the inverter is working properly and only appears in the "Status PS" setup parameter. In the event of an actual error, this status code supports Fronius TechSupport during the error analysis.  
799 No communication between the control board and the monitoring board The inverter is not feeding any energy into the grid. Notify a Fronius-trained service engineer

Class 10 Fronius status codes:

Error Code Description Behaviour Solution
1000 – 1299 Provide information on the status of the internal processor program Is of no concern when the inverter is working properly and only appears in the "Status PS" setup parameter. In the event of an actual error, this status code assists Fronius Technical Support during the error analysis.  

Visit Our Showroom

The AC Gold renewable energy showroom in Stirling offers an opportunity to see a range of renewable energy systems on display including solar PV, off-grid power solutions and a range of domestic biomass log and pellet boilers.

AC Gold Renewable Energy Showroom
11 Back O'Hill Industrial Estate, Stirling, FK8 1SH

Mon-Fri: 9am - 5pm