Fronius Primo Fault Codes

FRONIUS PRIMO FAULT CODES

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Fronius Primo Inverter Fault Codes

Full List

State Code	Definition	Cause	Solution
1000	RECERBO Watchdog Triggered	Occurs once	Automatic correction
102	AC voltage too high	Mains voltage error	Check main voltage and frequency on the AC clamps
103	AC voltage too low	Mains voltage error	Check main voltage and frequency on the AC clamps
105	AC frequency too high	Mains frequency error	Check mains frequency at the inverter AC clamps
1050	Event Input Queue Full – Task Is Waiting	Occurs once	Automatic correction
1051	Event USB Output Queue Full	Occurs once	Automatic correction
1052	Event LN Output Queue Full	Occurs once	Automatic correction
1054	Event Input Queue Full – Message rejected	Occurs once	Automatic correction
106	AC frequency too low	Mains frequency error	Check mains frequency at the inverter AC clamps
107	No AC grid detected	Mains not connected	Check mains voltage and cable connection on the inverter clamps
108	Islanding detected	Islanding detected	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
112	Residual Current Detected	Mains disturbances have been detected (e.g. ripple control signal)	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
1201	Power Stage Protocol Task Timeout	Occurs once	Automatic correction
1202	Display Task Timeout	Occurs once	Automatic correction
1203	Interface Communication Task Timeout	Occurs once	Automatic correction
1204	Solar Net Task Timeout	Occurs once	Automatic correction
1205	USB Task Timeout	Occurs once	Automatic correction
1206	Event Task Timeout	Occurs once	Automatic correction
1207	Idle Task Timeout	Occurs once	Automatic correction
1208	Real Time Clock Task Timeout	Occurs once	Automatic correction
1209	Control Task Timeout	Occurs once	Automatic correction
1210	CAN Task Timeout	Occurs once	Automatic correction
1211	Local Serial Data Exchange Task Timeout	Occurs once	Automatic correction
141	Change of mains frequency too high	Mains frequency error	Check mains frequency at the inverter AC clamps
212	AC voltage L1-N too high	Mains voltage error	Check main voltage and frequency on the AC clamps
213	AC voltage L1-N too low	Mains voltage error	Check main voltage and frequency on the AC clamps
222	AC voltage L2-N too high	Mains voltage error	Check main voltage and frequency on the AC clamps
223	AC voltage L2-N too low	Mains voltage error	Check main voltage and frequency on the AC clamps
240	Arc Detected	An arc occurred on the DC side	Check PV modules, cabeling and junction boxes on DC side for loose/bad connections and other damages (cable isolation). Check the fastening screws to the wall bracket. Confirm State 240 with Enter button
241	Arc detection confirmation 1	An arc occurred on the DC side, State Code 241 follows State Code 240 after confirmation	Confirm State Code 241 with Enter button
242	Arc detection confirmation 2	An arc occurred on the DC side, State Code 242 follows State Code 241 after confirmation	Confirm State Code 242 with Enter button
243	Arc Detected – Detected Arc does not fulfill the standardized AFCI switch-off limits	An arc occurred on the DC side	Automatic correction (restart inverter – AC/DC disconnect and reconnect); Equip inverter with SD card to log arcs.
245	Arc Fault Circuit Interrupter (AFCI) Selftest failed	Self-test routine failed due to measurement problems	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
247	Arc Fault Circuit Interrupter (AFCI) current sensor error	Data from primary and secondary DC current sensor don’t correspond	Restart inverter – AC/DC disconnect and reconnect if RECERBO SW Version < 0.2.9.0
249	Arc Fault Circuit Interrupter (AFCI) detected unplausible measurement values	Measuring failure	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
301	Overcurrent AC	Voltage drop on the public mains	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
302	Overcurrent DC	Bad cable connection on DC clamps	Check the cable connection inside DC cabinet, on the inverter clamps and check the fastening screws to the wall bracket
303	Channel 1 Overtemperature	Ambient temperature too high	Check inverter location
304	Channel 2 Overtemperature	Ambient temperature too high	Check inverter location
305	Intermediate circuit voltage too low	Unbalanced public power grid (high DC ratio in the AC) causes different energy amounts taken from the upper and the lower intermediate circuit -> unbalanced intermediate circuit	Check main voltage and frequency on the AC clamps
306	Power Low	DC breaker open	Close DC breaker
307	DC voltage too low	DC breaker open	Close DC breaker
308	Intermediate circuit voltage too high	Voltage drop on the public mains	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
309	DC1 Input Overvoltage	PV-Generator voltage too high at MPP 1	Check PV configuration and DC voltage at MPP 1
311	DC Poles Reversed	Poles are reversed at least at one string	Check DC Polarity, Reverse Poles
312	Ambient temperature too low	Ambient temperature too low	Check inverter location, wait for higher ambient temperatur
313	DC2 Input Overvoltage	PV-Generator voltage too high at MPP 2	Check PV configuration and DC voltage at MPP 2
314	Start-up process interrupted (AC or DC failure)	Internal Software fault	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
315	AC Current Sensor Error	Shunt offset to high	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
316	Filter Software Timing Error	Possible software error	Run latest software update
317	Unbalanced Intermediate Voltage	Short circuit of intermediate circuit	Automatic correction
318	DC Reverse Current detected	Reverse current detected	Automatic correction
324	Channel 3 Overtemperature	Ambient temperature too high	Check inverter location
401	Power Stack Communication Error	Communication error	Restart the inverter – AC/DC disconnect and reconnect
406	Error temperature sensor on DC board	Old Software	Run latest software update
407	Error temperature sensor on AC board	Old Software	Run latest software update
408	Too high DC-voltage injection measured in public power grid	Temporary disruption with the grid	Wait until inverter starts automatically
4095	EEPROM failure	Occurs once	Automatic correction
412	DC1 Fix Voltage Out Of Range	DC1 fix voltage was adjusted too high or too low	Check DC1 fix voltage adjustments in the Installer Menu Basic
415	Wired Shutdown Triggered	Option card tripped an external shutdown	Automatic correction
416	RECERBO – Power Stack Communication Error	Occurs once – communication error	Automatic correction
417	Hardware-ID Collision	Occurs once – communication error	Automatic correction
425	Data Exchange Timeout	Occurs once – communication error	Automatic correction
426	Intermediate Circuit Loading Timeout	Too less DC Power	Wait for more DC Power
427	Power Stack Ready Timeout	Occurs once – communication error	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
4294967294	R&D Internal State Code	DOES NOT OCCUR	DOES NOT OCCUR
4294967295	DOES NOT OCCUR	DOES NOT OCCUR	DOES NOT OCCUR
431	Power Stack In Bootmode	Power stack will be programmed by the RECERBO automatically	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
436	Invalid Bitmap Received	Power stack can’t communicate with the RECERBO board	Run latest software update
437	Power Stack Event Handling Error	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
445	Invalid parameters detected	Country setup error	Run latest software update and reload country setup.
447	Isolation Error	PV system grounding error; Inverter ground is missing or grouding cable broken	Check PV system including grounding
448	No Neutral Wire	No neutral wire detected	Check AC-wiring
450	Guard Controller – Communication Error	Ribbon cable between Filter board and the Power Stack is faulty or not connected properly	Check ribbon cables between Filter board and Power Stack
451	Memory Check Error	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
452	Power Stack – Filter Communication Error	Communication Problem caused by temporary enviromental disturbances (grid, EMC, …)	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
453	Internal AC voltage deviation	Occurs once – Grid disturbances	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
454	AC frequency deviation	Occurs once – Grid disturbances	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
456	Guard Controller – Anti Islanding Selftest Error	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
457	Grid Relay Error	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
458	Residual Current Monitoring Unit (RCMU) Error	Software error	Run latest software update
459	Guard Controller – Isolation Selftest Error	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
460	Power Stack / Filter Print Reference Voltage Error	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
461	RAM Error / Collective Fault	Occurs once	Automatically correction (restart inverter – AC/DC disconnect and reconnect)
462	Guard Controller – DC injection into grid detected	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
463	AC Poles reversed	Measuring circuit defect	Replace PRIMOFIL board
474	Residual Current Sensor defect	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
475	Isolation Error	Occurs once	Automatically correction (restart inverter – AC/DC disconnect and reconnect)
476	Power Stack Supply Missing	Internal power supply defect	Replace PRIMOFIL or PRIMOPS board
479	Intermediate Circuit Relay Switched Off	Bistable Relay changed state during transport	Automatic correction
480	Incompatible feature	Old Software	Run latest software update
481	Not supported feature	Old Software	Run latest software update
482	Installation wizard aborted	Start-up process not successful	Restart the inverter
483	DC-Fix voltage out of range	Start-up process not successful / Fix voltage was adjusted too high or too low	Restart inverter / check adjustments in the Insttaller Menu Basic
484	CAN transfer timeout	Communication Problem caused by temporary enviromental disturbances (grid, EMC, …)	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
485	CAN transmit buffer full	Communication Problem caused by temporary enviromental disturbances (grid, EMC, …)	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
489	Permanent Intermediate Circuit Capacitor Overvoltage	Intermediate circuit capacitor overvoltage protection tripped	Confirm State Code with Enter button
502	Warning – Isolation value too low	Hardware defect	Replace device
509	No Feed In For 24 Hours	Too less power from the PV system	Check output power of the PV system (Voltage level, …)
516	Power Stack EEPROM Error	Occurs once – communication error	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
517	Power derating due to overtemperature	Ventilation opening blocked	Clean ventilation openings
519	Filter Board – EEPROM Error	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
520	MPP Tracker #1 – No Feed-In For 24 Hours	Too less power at MPP Tracker #1 to feed in	Check output power of the PV system which is plugged on MPP Tracker #1 (Voltage level, …)
521	MPP Tracker #2 – No Feed-In For 24 Hours	Too less power at MPP Tracker #2 to feed in	Check output power of the PV system which is plugged on MPP Tracker #2 (Voltage level, …)
522	DC1 Input Voltage too low	DC1 Input Voltage too low	Check PV voltage
523	DC2 Input Voltage too low	DC2 Input Voltage too low	Check PV voltage
545	Configuration not supported	Software incompatible	Run latest software update and reload country setup.
558	Incompatible Power Stack Software	Old Software	Run latest software update
559	RECERBO software version is incompatible	Old Software	Run latest software update
560	Power Derating Due To High Grid Frequency	Too high grid frequency	Automatic correction
565	Arc Fault Circuit Interrupter SD Card Error [US only]	SD card not plugged correctly	Insert SD card correctly
566	Arc Fault Circuit Interrupter Deactivated Warning [US only]	Arc Fault Circuit Interrupter (AFCI) has been deactivated, no protection against occurring arcs	For information only (occurs daily because of standard requirements)
567	Grid Voltage Dependent Power Derating	Too high grid voltage	Automatic correction
568	Multifunction current interface Warning	An external custom device (Overvoltage Protection) performs a signal state change	Check the external signal or the input signal configuration
571	Software State Inconsistency	Occurs once	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
572	Power Limit Invalid	The device data unit contains a wrong power limit	Check device data unit at the RECERBO -> interchanged!?
573	Undertemperature Dependent Power Derating	Derating because ambient temperature is too low	Wait for higher ambient temperature
574	CAN Stack Warning	Too much traffic at the CAN bus	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
579	Developer Warning	Software error	Run latest software update
581	Special Purpose Utility (SPUI) Mode Active	Setup MG50 or MG60 selected	Just for information – push enter; if wrong choose a different country setup
601	CAN Bus Full	Occurs once	Restart the inverter
602	Blocked By Italy Autotest	Autotest (Countrysetup:IT) not successfully finished	Setup Italy: Restart Autotest (Code 11111) until the test is successful
607	RCMU Continous Fault	A residual current was detected	Disconnect inverter from DC and reconnect
608	Power Stack Software Incompatibility	Software incompatibility between the board in the inverter	Run latest software update
609	Configuration Value Out Of Limits	Configuration limits are outside of the limits in the RECERBO software	Run latest software update
610	CAN-Init failed	Old Software	Run latest software update
614	Active Event List Full	More than 15 State Codes occur at the same time	Informative State Code; check Info Menu / Power Stage State
615	RAM-Check – Invalid Bit Found	Old Software	Run latest software update
668	External I/O Error	Device that is connected has opened or closed	Check the device that is connected (e.g. surge arrester)
701	Solar Net – Node Type Out Of Range	Wrong Solar Net number	Insert Solar Net number again
702	Solar Net – Receive Buffer Full	Problems with Solar Net	Check Solar Net ring
703	Solar Net – Send Buffer Full	Problems with Solar Net ring	Check Solar Net ring
705	Solar Net – Node Type Conflict	Selected Fronius Solar Net number is already in use	Change Solar Net number, must be unique
706	CapKey – Get Version Failed	Occurs once – communication error	Automatic correction
707	CapKey – Update Failed	Occurs once – communication error	Automatic correction
708	CapKey – Reserved 1	Reserved – for future use	Reserved – for future use
709	CapKey – Reserved 2	Reserved – for future use	Reserved – for future use
710	Solar Net – Keep Alive Signal Missing	no Solar Net connection	check Solar Net status at inverter
711	EEPROM Write – Wrong Data Length	Software error	Run latest software update
712	EEPROM Write – Descriptor Not Found	Occurs once – communication error	Automatic correction
713	EEPROM Read – Descriptor Not Found	Occurs once – communication error	Automatic correction
714	EEPROM Read Warning – CRC Header Fail Will Retry	Occurs once – communication error	Automatic correction
715	EEPROM Read Error – Other error	Occurs once – communication error	Automatic correction
716	Event Log EEPROM Drive Error	Software error	Run latest software update
721	EEPROM – Reinitialized	Occurs once – communication error	Automatic correction
722	EEPROM – Wait Busy Timeout	Occurs once – communication error	Automatic correction
723	EEPROM Write – Verify Fail Will Retry	Occurs once – communication error	Automatic correction
724	EEPROM Write – Other Error	Occurs once – communication error	Automatic correction
725	EEPROM Read – CRC Data Fail Give It Up	Occurs once – communication error	Automatic correction
726	EEPROM Read – CRC Data Fail Give It Up	Occurs once – communication error	Automatic correction
727	EEPROM Check Data Warning – All Data Corrupt	Occurs once – communication error	Automatic correction
730	EEPROM Check Data – Data Restored	Occurs once – communication error	Automatic correction
731	USB flash drive initializing error	USB flash drive Read/Write protected	Remove Read/Write protection
732	USB flash drive overcurrent	USB flash drive ineligible due to too high current	Use another USB flash drive
733	No USB flash drive inserted	No USB flash drive inserted	Insert USB flash drive
734	No software update found on USB flash drive	Software update has wrong format or naming	Name software update correctly (correct : Froxxxxx.upd, xx…. continuously number)
735	No supported software update found on USB flash drive	Old or Defective Software update on the USB flash drive	Load latest Software update onto the USB flash drive
736	USB flash drive Read/Write error	Incorrectly formatted USB flash drive (NTFS)	Format USB flash drive (FAT32)
737	Software update can not be read from the USB flash drive	Software error	Load latest Software update onto the USB flash drive
738	Log-File can’t be created on the USB flash drive	USB flash drive secured with a password	Delete password protection
740	USB flash drive enumeration error	Incorrectly formatted USB flash drive (NTFS)	Format USB flash drive (FAT32)
741	USB flash drive logging write error	Memory on USB flash drive full	Delete data from USB flash drive
743	Software update failed	Unplugged USB flash drive during Software update	Reconnect USB flash drive and start software update again
745	Software update checksum wrong	Software error	Download and install latest Software update
746	Product Matrix Code (PMC) read error during software update	Some Boards haven’t started completely yet	Wait until the inverter have started and start Software update again
751	Real-Time Clock – Time Lost	Inverter had no AC connection for longer than 5 days	Set time and date
752	Real-Time Clock – Hardware Error	Occurs once – communication error	Automatic correction
754	Real-Time Clock – Time Set	Time / date has been set	Informative State Code
755	EEPROM Data Written	Data save process been successfull	Informative State Code
757	Real-Time Clock – Hardware Error	Defective real time clock module	Replace RECERBO board
758	Real-Time Clock – Emergency Mode	Occurs once – communication error	Automatic correction
760	System Crystal Broken	Occurs once – communication error	Automatic correction
761	Device Data Unit Memory Read Error	Device data unit is missing at the RECERBO	Fix Device data unit board on RECERBO
762	Plugged Device Data Unit Read Error	Plug connection problem	Check each plug connection in the inverter
765	Random Number Generator Error	Occurs once – communication error	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
766	Power Limit Not Found	Plug connection problem	Check each plug connection in the inverter
767	Power Limiter Communication Error	Occurs once – communication error	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
768	Power Limit Not Identical	Attached Device Data Unit is being connected or disconnected during feeding in operation	Automatic correction (State Code must be confirmed)
772	Memory Not Available	Attached Device Data Unit is being connected or disconnected during feeding in operation / Device Data Unit missing	Connect Device Data Unit again and restart the inverter
773	Update Group Zero	No storage print is beeing connected to the RECERBO	Connect Device Data Unit again and restart the inverter
775	Power Stack Product Matrix Code Invalid	Product Matrix Code can’t be read out	Automatic correction (restart inverter – AC/DC disconnect and reconnect)
777	CAN Error Message Source	Problem at any CAN node	Informative State Code
778	CAN Error Message State Code	Problem at any CAN node	Informative State Code
779	CAN Node Error Reporting	Problem at any CAN node	Informative State Code
782	Update Flash – CRC Error	Occurs once – communication error	Automatic correction
783	Update Flash – Header CRC Error	Occurs once – communication error	Automatic correction
784	Update Flash – Timeout	Occurs once – communication error	Automatic correction
785	Update Flash – Read Value (Value Not Found)	Problems during Software update	Restart Software update
787	Update Flash – Read Value (Setup Not Found)	Unable to find a setup	Run latest software update
789	Update Flash – Read Value (Header CRC Error)	Wrong/defect data in flash	Run latest software update
792	Update Flash – Find Header (Header Not Found)	Software update failed	Restart Software update
794	Update Flash – Find Header (Header Address Impossible)	Wrong/defect data in flash	Run latest software update
795	CPLD Update successful	CPLD Update successful	Informative State Code; NOTE: FIRMWARE UPDATE necessary
796	CPLD Update failed	CPLD Update failed	run CPLD Update again
797	CPLD Update incompatible	CPLD Update incompatible	run CPLD Update again

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The team at MC Solar & Electrical have been a joy to work with from start to finish. Highly professional, knowledgeable and friendly service. Very clean and neat installation. Nothing was to much trouble. Our install required an additional work by Energex and several additional visits to connect the service was provided promptly to ensure minimal delay.Very happy with the system and service provided.

Patrick P.

I had a long technical talk with Mark today about Solar in general. Even though I am not from Qld., and can't purchase from him, I am mightily impressed by his knowledge and very appreciative of his advise.He has direct contact with Fronius in Austria and is thus very up to date with their products. Part of his advise was to use Solar Analytics in order to find accurate information about my consumption and what I would expect to save.I especially like his review videos and will now be saving money by not purchasing Enphase Microinverters or Solar Edge Optimisers. In my case, there is little to no shade and would not benefit from the added expense of these two porducts. Money I can now put towards a larger solar panel array. So thank you very much Mark.

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