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Fronius Fault Code

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How to Reconnect Your Fronius Inverter to WiFi

Getting Your Fronius Inverter Reconnected to WiFi Has Never Been Easier

Reasons your Fronius inverter needs to be reconnected to WiFi:

  • You’ve recently upgraded to the NBN
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  • You’re setting up the inverter for the first time
  • Fronius updated the software that runs your inverter*


*Fronius is the best solar inverter in the world! One of the reasons for this is the R&D that goes into them, in particular the algorithms that ensure your solar panels are producing the most that they can. This is why Fronius continually updates its software, which can cause the inverter to lose its connection to the WiFi network on occasion. This performance development is something you simply don’t get with cheaper inverters and is one of the many reasons you pay more for a Fronius inverter.

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Fronius Primo Inverter Fault Codes

If your Fronius Primo Inverter is displaying a fault code then you’ll want to get hold of us to help you out.

MC Electrical is a Fronius Solutions Partner Plus, meaning we are trained and authorised to make repairs to all Fronius Inverters.

FAULT CODEISSUECAUSERESOLUTION
STATE 102AC VOLTAGE TOO HIGHThe inverter will be testing the grid. Once the grid conditions are within the permissable range set in the inverter, the inverter will resume feeding power back into the grid.Check the grid connections – if the issue remains or re-occurs contact your solar installer.
STATE 103AC VOLTAGE TOO LOW
STATE 105AC FREQUENCY TOO HIGH
STATE 106AC FREQUENCY TOO LOW
STATE 107AC GRID OUTSIDE PERMISSABLE LIMITS
STATE 108STAND ALONE OPERATION DETECTED
STATE 112RCMU ERROR
FAULT CODEISSUECAUSERESOLUTION
STATE 301OVERCURRENT (AC)Short term interruption while feeding energy into the grid due to over current in the inverter. The inverter will resume with startup.Fault is rectified automatically. If this state error code displays constantly, contact your nearest Fronius Solutions Partner Plus.
STATE 302OVERCURRENT (DC)
STATE 303POWER STAGE SET OVER TEMPERATUREShort term interruption while feeding energy into the grid due to over temperature. The inverter will resume with startup.Confirm all air vents are free of debris if necessary. Fault will rectify automatically. If this state error code displays constantly, contact your nearest Fronius Solutions Partner Plus.
STATE 304INTERNAL TEMPERATURE TOO HIGH
STATE 306LOW PV OUTPUT (INTERMEDIATE CIRCUIT VOLTAGE TOO LOW FOR FEEDING INTO THE GRID)Short term interruption while feeding energy into the grid. The inverter will resume with startup.Fault is rectified automatically. If error state displays constantly, contact your solar installer. (Normal for these codes to display in low light conditions)
STATE 307LOW PV VOLTAGE (DC INPUT VOLTAGE TOO LOW FOR FEEDING INTO THE GRID)
STATE 308INTERMEDIATE CIRCUIT OVERVOLTAGEShort term interruption while feeding energy into the grid. The inverter will resume with startup.Fault is rectified automatically. If error state displays constantly, contact your nearest Fronius Solutions Partner Plus.
STATE 309DC INPUT VOLTAGE MPPT-1 TOO HIGH
STATE 313DC INPUT VOLTAGE MPPT-2 TOO HIGH
FAULT CODEISSUECAUSERESOLUTION
STATE 401NO COMMUNICATION WITH POWER STAGE SET POSSIBLEThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 406POWER STAGE SET TEMPERATURE SENSOR FAULTYThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 407INTERNAL TEMPERATURE SENSOR FAULTYThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 408DC FEEDING INTO THE GRID, DETECTED.The inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 412FIXED VOLTAGE MODE HAS BEEN SELECTED INSTEAD OF MPP VOLTAGE MODE AND THE FIXED VOLTAGE HAS BEEN SET TO A TOO LOW OR TOO HIGH VALUEN/AIf this state code persists contact your solar power installer.
STATE 415SAFETY CUTOUT VIA OPTION CARD OR RECERBO HAS TRIGGEREDThe inverter is not feeding any energy into the gridIf the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 416NO COMMUNICATION BETWEEN POWER STAGE SET AND CONTROL SYSTEMThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 417HARDWARE ID PROBLEMThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 419UNIQUE ID CONFLICTThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 421HID RANGE ERRORThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 425NO COMMUNICATION POSSIBLE WITH THE POWER STAGE SETThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 426 – 428POSSIBLE HARDWARE FAULTThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 431SOFTWARE PROBLEMThe inverter is not feeding any energy into the gridCarry out an AC reset (switch AC breaker off and on) update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 436FUNCTION INCOMPATIBILITY (ONE OR MORE PC BOARDS IN THE INVERTER ARE NOT COMPATIBLE WITH EACHOTHER. E.G. AFTER A PC BOARD HAS BEEN REPLACED)The inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.Update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 437POWER STAGE SET PROBLEMThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.Update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 438FUNCTIONAL INCOMPATIBILITY (ONE OR MORE PC BOARDS IN THE INVERTER ARE NOT COMPATIBLE WITH EACHOTHER. E.G. AFTER A PC BOARD HAS BEEN REPLACED)The inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.Update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 443INTERMEDIATE CIRCUIT VOLTAGE TOO LOW OR ASYMMETRICThe inverter is not feeding any energy into the gridIf the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 445INVALID LIMIT VALUE SETTINGThe inverter is not feeding any energy into the gridUpdate the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 447INSULATION FAULTThe inverter is not feeding any energy into the grid for safety reasonsUpdate the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 448NEUTRAL CONDUCTOR NOT CONNECTEDThe inverter is not feeding any energy into the grid for safety reasonsIf this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 450GUARD CANNOT BE FOUNDN/ACarry out an AC circuit breaker reset. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 451MEMORY ERROR DETECTEDThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 452COMMUNICATION ERROR BETWEEN THE PROCESSORSThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 453SHORT TERM GRID VOLTAGE ERRORThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 454SHORT TERM GRID FREQUENCY ERRORThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 456ANTI-ISLANDING FUNCTION IS NOT LONGER IMPLEMENTED CORRECTLYThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 457GRID RELAY STICKINGThe inverter is not feeding any energy into the gridContact your closest Fronius Solutions Partner Plus
STATE 459ERROR WHEN RECORDING THE MEASURING SIGNAL FOR THE INSULATION TESTN/AContact your closest Fronius Solutions Partner Plus
STATE 460REFERENCE VOLTAGE SOURCE FOR THE DIGITAL SIGNAL PROCESSOR (DSP) IS WORKING OUT OF TOLERANCEThe inverter is not feeding any energy into the gridContact your closest Fronius Solutions Partner Plus
STATE 461FAULT IN THE DSP DATA MEMORYThe inverter is not feeding any energy into the gridContact your closest Fronius Solutions Partner Plus
STATE 462ERROR WITH DC FEED MONITORING ROUTINEThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 463REVERSED AC POLARITY, AC CONNECTOR INSERTED INCORRECTLYThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 474RCMU SENSOR FAULTYThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 475SOLAR PANEL GROUND FAULT, INSULATION FAULT. (CONNECTION BETWEEN SOLAR PANEL AND GROUND)The inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 476DRIVER SUPPLY VOLTAGE TOO LOWThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 480 & 481FUNCTIONAL INCOMPATIBILITY (ONE OR MORE PC BOARDS ARE NOT COMPATIBLE WITH EACH OTHER; E.G., AFTER A PC BOARD HAS BEEN REPLACED)Update the Fronius inverter firmware, if this state code persistsContact your closest Fronius Solutions Partner Plus
STATE 482STARTUP INCOMPLETEReset AC breaker and complete startup procedureIf the state code is displayed all the time contact your local Fronius Solutions Partner Plus
STATE 483VOLTAGE UDC FIXED ON MPP2 STRING OUT OF LIMITSCheck the MPP settings, if the state code is displayed all the timeContact your local Fronius Solutions Partner Plus
STATE 485CAN TRANSMIT BUFFER IS FULLCheck the MPP settings, if the state code is displayed all the timeCARRY OUT AN AC CIRCUIT BREAKER RESET. (TURN BREAKER OFF THEN ON AGAIN) IF THE STATE CODE PERSISTS, CONTACT YOUR CLOSEST FRONIUS SOLUTIONS PARTNER PLUS.
FAULT CODEISSUECAUSERESOLUTION
STATE 502INSULATION ERROR ON THE SOLAR PANELSWarning message is shown on the displayIf this state code keeps re-occurring, contact your solar power installer.
STATE 509NO ENERGY FED INTO THE GRID IN THE PAST 24 HOURSWarning message is shown on the displayAcknowledge state code; check whether all the conditions for the problem feeder feeding into the grid have been met. If the state code continues to display, look out for further state codes.
STATE 515NO COMMUNICATION WITH FILTER POSSIBLEN/AIf the status code is displayed all the time, notify your local Fronius service partner plus.
STATE 516NO COMMUNICATION POSSIBLE WITH THE STORAGE UNITStorage unit warning messageIf the status code is displayed all the time, notify your local Fronius service partner plus.
STATE 517DERATING CAUSED BY TEMPERATURE TOO HIGHWhen 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 re-occurring contact your solar power installer.
STATE 522DC1 INPUT VOLTAGE TOO LOWThe DC voltage on input 1 of the inverter is too lowCheck voltage and polarity on input 1 of the inverter. If this state keeps re-occurring, contact your solar power installer.
STATE 523DC2 INPUT VOLTAGE TOO LOWThe DC voltage on input 2 of the inverter is too lowCheck voltage and polarity on input 2 of the inverter. If this state keeps re-occurring, contact your solar power installer.
STATE 558FUNCTIONAL INCOMPATIBILITY (ONE OR MORE PC BOARDS IN THE INVERTER ARE NOT COMPATIBLE WITH EACHOTHER. E.G. AFTER A PC BOARD HAS BEEN REPLACED)Possible error displays or malfunction on the inverterIf this state keeps re-occurring, contact your solar power installer.
STATE 560DERATING CAUSED BY OVER-FREQUENCYThis state 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 code will be rectified automatically. If this state code keeps re-occurring contact your solar power system installer.
STATE 566ARC DETECTOR SWITCHED OFF (e.g. during external arc monitoring)This state code is displayed every day until the arc detector is re-activated.No error, confirm status code by pressing ‘Enter’
STATE 567GRID VOLTAGE DEPENDANT POWER REDUCTION IS ACTIVEThis state code is a warning informing you that the grid voltage dependant 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 inverter’s terminals. This mode must be enabled by default in accordance with the latest Austrian standards.Grid voltage is higher than it should be, this state code could mean that your solar power output is being decreased to reduce further voltage rise within the grid.
FAULT CODEISSUECAUSERESOLUTION
STATE 705CONFLICT WHEN SETTING THE STRING INVERTER NUMBER (e.g.: NUMBER ALREADY ASSIGNED)NILCORRECT THE INVERTER NUMBER VIA THE SETUP MENU
STATE 721‘EEPROM’ HAS BEEN REINITIALISED OR ‘EEPROM’ IS FAULTYACKNOWLEDGE STATE CODE. IF THE STATE CODE IS DISPLAYED CONTINUOUSLY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS
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 CONTINUOUSLY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNERS PLUS
STATE 732OVER CURRENT ON USB STICKWARNING MESSAGE IS SHOWN ON THE DISPLAY
STATE 733NO USB STICK CONNECTEDCONNECT OR CHECK THE USB STICK. IF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS
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 FRONIUS SOLUTIONS PARTNERS PLUS
STATE 735UPDATE FILE DOES NOT MATCH THE DEVICE, UPDATE FILE TOO OLDWARNING MESSAGE APPEARS ON THE DISPLAY. UPDATE PROCESS IS INTERRUPTEDUPDATE THE INVERTER FIRMWARE WITH THE LATEST FIRMWARE AVAILABLE. IF THIS STATE CODE CONTINUES TO DISPLAY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS
STATE 736WRITE OR READ ERROR OCCURREDCHECK THE USB STICK AND DATA CONTAINED ON IT OR REPLACE USB STICK. NEVER UNPLUG A USB STICK IF THE DATA TRANSMISSION LED IS STILL FLASHING. IF STATE CODE CONTINUES, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 738LOG FILE CANNOT BE SAVED (e.g. USB STICK IS WRITE PROTECTED OR FULL)WARNING MESSAGE DISPLAYED ON THE SCREENCREATE STORAGE SPACE, REMOVE WRITE PROTECTION, CHECK OR REPLACE USB STICK IF NECESSARY. IF THE STATE CODE IS DISPLAYED CONTINUOUSLY CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 743ERROR OCCURRED DURING UPDATE PROCESSREPEAT THE UPDATE PROCESS, CHECK USB STICK. IF STATE CODE IS DISPLAYED CONTINUOUSLY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 745UPDATE FILE CORRUPTWARNING MESSAGE APPEARS ON THE DISPLAY, UPDATE PROCESS IS INTERRUPTED.RE-DOWNLOAD THE LATEST FRONIUS FIRMWARE. IF STATE CODE CONTINUES TO DISPLAY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 751TIME LOSTRESET 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 SOLUTIONS PARTNER PLUS.
STATE 752REAL TIME CLOCK MODULE COMMUNICATION ERRORWARNING MESSAGE IS DISPLAYED ON THE SCREEN
STATE 757HARDWARE ERROR IN THE REAL TIME CLOCK MODULEERROR MESSAGE IS SHOWN ON THE INVERTER DISPLAYIF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 758INTERNAL ERROR – REAL TIME CLOCK MODULE IS IN EMERGENCY MODETIME MAY BE INACCURATE OR LOST (FEEDING ENERGY INTO THE GRID WILL BE NORMAL)IF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 766EMERGENCY POWER DERATING HAS BEEN ACTIVATEDERROR MESSAGE IS SHOWN ON THE INVERTER DISPLAYIF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
State CodeDefinition CauseSolution
1000RECERBO Watchdog Triggered Occurs onceAutomatic correction
102AC voltage too high Mains voltage errorCheck main voltage and frequency on the AC clamps
103AC voltage too low Mains voltage errorCheck main voltage and frequency on the AC clamps
105AC frequency too high Mains frequency errorCheck mains frequency at the inverter AC clamps
1050Event Input Queue Full – Task Is Waiting Occurs onceAutomatic correction
1051Event USB Output Queue Full Occurs onceAutomatic correction
1052Event LN Output Queue Full Occurs onceAutomatic correction
1054Event Input Queue Full – Message rejected Occurs onceAutomatic correction
106AC frequency too low Mains frequency errorCheck mains frequency at the inverter AC clamps
107No AC grid detected Mains not connectedCheck mains voltage and cable connection on the inverter clamps
108Islanding detected Islanding detectedAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
112Residual Current Detected Mains disturbances have been detected (e.g. ripple control signal)Automatic correction (restart inverter – AC/DC disconnect and reconnect)
1201Power Stage Protocol Task Timeout Occurs onceAutomatic correction
1202Display Task Timeout Occurs onceAutomatic correction
1203Interface Communication Task Timeout Occurs onceAutomatic correction
1204Solar Net Task Timeout Occurs onceAutomatic correction
1205USB Task Timeout Occurs onceAutomatic correction
1206Event Task Timeout Occurs onceAutomatic correction
1207Idle Task Timeout Occurs onceAutomatic correction
1208Real Time Clock Task Timeout Occurs onceAutomatic correction
1209Control Task Timeout Occurs onceAutomatic correction
1210CAN Task Timeout Occurs onceAutomatic correction
1211Local Serial Data Exchange Task Timeout Occurs onceAutomatic correction
141Change of mains frequency too high Mains frequency errorCheck mains frequency at the inverter AC clamps
212AC voltage L1-N too high Mains voltage errorCheck main voltage and frequency on the AC clamps
213AC voltage L1-N too low Mains voltage errorCheck main voltage and frequency on the AC clamps
222AC voltage L2-N too high Mains voltage errorCheck main voltage and frequency on the AC clamps
223AC voltage L2-N too low Mains voltage errorCheck main voltage and frequency on the AC clamps
240Arc Detected An arc occurred on the DC sideCheck 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
241Arc detection confirmation 1 An arc occurred on the DC side, State Code 241 follows State Code 240 after confirmationConfirm State Code 241 with Enter button
242Arc detection confirmation 2 An arc occurred on the DC side, State Code 242 follows State Code 241 after confirmationConfirm State Code 242 with Enter button
243Arc Detected – Detected Arc does not fulfill the standardized AFCI switch-off limits An arc occurred on the DC sideAutomatic correction (restart inverter – AC/DC disconnect and reconnect); Equip inverter with SD card to log arcs.
245Arc Fault Circuit Interrupter (AFCI) Selftest failed Self-test routine failed due to measurement problemsAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
247Arc Fault Circuit Interrupter (AFCI) current sensor error Data from primary and secondary DC current sensor don’t correspondRestart inverter – AC/DC disconnect and reconnect if RECERBO SW Version < 0.2.9.0
249Arc Fault Circuit Interrupter (AFCI) detected unplausible measurement values Measuring failureAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
301Overcurrent AC Voltage drop on the public mainsAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
302Overcurrent DC Bad cable connection on DC clampsCheck the cable connection inside DC cabinet, on the inverter clamps and check the fastening screws to the wall bracket
303Channel 1 Overtemperature Ambient temperature too highCheck inverter location
304Channel 2 Overtemperature Ambient temperature too highCheck inverter location
305Intermediate 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 circuitCheck main voltage and frequency on the AC clamps
306Power Low DC breaker openClose DC breaker
307DC voltage too low DC breaker openClose DC breaker
308Intermediate circuit voltage too high Voltage drop on the public mainsAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
309DC1 Input Overvoltage PV-Generator voltage too high at MPP 1Check PV configuration and  DC voltage at MPP 1
311DC Poles Reversed Poles are reversed at least at one stringCheck DC Polarity, Reverse Poles
312Ambient temperature too low Ambient temperature too lowCheck inverter location, wait for higher ambient temperatur
313DC2 Input Overvoltage PV-Generator voltage too high at MPP 2Check PV configuration and  DC voltage at MPP 2
314Start-up process interrupted (AC or DC failure) Internal Software faultAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
315AC Current Sensor Error Shunt offset to highAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
316Filter Software Timing Error Possible software errorRun latest software update
317Unbalanced Intermediate Voltage Short circuit of intermediate circuitAutomatic correction
318DC Reverse Current detected Reverse current detectedAutomatic correction
324Channel 3 Overtemperature Ambient temperature too highCheck inverter location
401Power Stack Communication Error Communication errorRestart the inverter – AC/DC disconnect and reconnect
406Error temperature sensor on DC board Old SoftwareRun latest software update
407Error temperature sensor on AC board Old SoftwareRun latest software update
408Too high DC-voltage injection measured in public power grid Temporary disruption with the gridWait until inverter starts automatically
4095EEPROM failure Occurs onceAutomatic correction
412DC1 Fix Voltage Out Of Range DC1 fix voltage was adjusted too high or too lowCheck DC1 fix voltage adjustments in the Installer Menu Basic
415Wired Shutdown Triggered Option card tripped an external shutdownAutomatic correction
416RECERBO – Power Stack Communication Error Occurs once – communication errorAutomatic correction
417Hardware-ID Collision Occurs once – communication errorAutomatic correction
425Data Exchange Timeout Occurs once – communication errorAutomatic correction
426Intermediate Circuit Loading Timeout Too less DC PowerWait for more DC Power
427Power Stack Ready Timeout Occurs once – communication errorAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
4294967294R&D Internal State Code DOES NOT OCCURDOES NOT OCCUR
4294967295DOES NOT OCCUR DOES NOT OCCURDOES NOT OCCUR
431Power Stack In Bootmode Power stack will be programmed by the RECERBO automaticallyAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
436Invalid Bitmap Received Power stack can’t communicate with the RECERBO boardRun latest software update
437Power Stack Event Handling Error Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
445Invalid parameters detected Country setup errorRun latest software update and reload country setup.
447Isolation Error PV system grounding error; Inverter ground is missing or grouding cable brokenCheck PV system including grounding
448No Neutral Wire No neutral wire detectedCheck AC-wiring
450Guard Controller – Communication Error Ribbon cable between Filter board and the Power Stack is faulty or not connected properlyCheck ribbon cables between Filter board and Power Stack
451Memory Check Error Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
452Power Stack – Filter Communication Error Communication Problem caused by temporary enviromental disturbances (grid, EMC, …)Automatic correction (restart inverter – AC/DC disconnect and reconnect)
453Internal AC voltage deviation Occurs once – Grid disturbancesAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
454AC frequency deviation Occurs once – Grid disturbancesAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
456Guard Controller – Anti Islanding Selftest Error Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
457Grid Relay Error Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
458Residual Current Monitoring Unit (RCMU) Error Software errorRun latest software update
459Guard Controller – Isolation Selftest Error Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
460Power Stack / Filter Print Reference Voltage Error Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
461RAM Error / Collective Fault Occurs onceAutomatically correction (restart inverter – AC/DC disconnect and reconnect)
462Guard Controller – DC injection into grid detected Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
463AC Poles reversed Measuring circuit defectReplace PRIMOFIL board
474Residual Current Sensor defect Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
475Isolation Error Occurs onceAutomatically correction (restart inverter – AC/DC disconnect and reconnect)
476Power Stack Supply Missing Internal power supply defectReplace PRIMOFIL or PRIMOPS board
479Intermediate Circuit Relay Switched Off Bistable Relay changed state during transportAutomatic correction
480Incompatible feature Old SoftwareRun latest software update
481Not supported feature Old SoftwareRun latest software update
482Installation wizard aborted Start-up process not successfulRestart the inverter
483DC-Fix voltage out of range Start-up process not successful / Fix voltage was adjusted too high or too lowRestart inverter / check adjustments in the Insttaller Menu Basic
484CAN transfer timeout Communication Problem caused by temporary enviromental disturbances (grid, EMC, …)Automatic correction (restart inverter – AC/DC disconnect and reconnect)
485CAN transmit buffer full Communication Problem caused by temporary enviromental disturbances (grid, EMC, …)Automatic correction (restart inverter – AC/DC disconnect and reconnect)
489Permanent Intermediate Circuit Capacitor Overvoltage Intermediate circuit capacitor overvoltage protection trippedConfirm State Code with Enter button
502Warning – Isolation value too low Hardware defectReplace device
509No Feed In For 24 Hours Too less power from the PV systemCheck output power of the PV system (Voltage level, …)
516Power Stack EEPROM Error Occurs once – communication errorAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
517Power derating due to overtemperature Ventilation opening blockedClean ventilation openings
519Filter Board – EEPROM Error Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
520MPP Tracker #1 – No Feed-In For 24 Hours Too less power at MPP Tracker #1 to feed inCheck output power of the PV system which is plugged on MPP Tracker #1 (Voltage level, …)
521MPP Tracker #2 – No Feed-In For 24 Hours Too less power at MPP Tracker #2 to feed inCheck output power of the PV system which is plugged on MPP Tracker #2 (Voltage level, …)
522DC1 Input Voltage too low DC1 Input Voltage too lowCheck PV voltage
523DC2 Input Voltage too low DC2 Input Voltage too lowCheck PV voltage
545Configuration not supported Software incompatibleRun latest software update and reload country setup.
558Incompatible Power Stack Software Old SoftwareRun latest software update
559RECERBO software version is incompatible Old SoftwareRun latest software update
560Power Derating Due To High Grid Frequency Too high grid frequencyAutomatic correction
565Arc Fault Circuit Interrupter SD Card Error [US only] SD card not plugged correctlyInsert SD card correctly
566Arc Fault Circuit Interrupter Deactivated Warning [US only] Arc Fault Circuit Interrupter (AFCI) has been deactivated, no protection against occurring arcsFor information only (occurs daily because of standard requirements)
567Grid Voltage Dependent Power Derating Too high grid voltageAutomatic correction
568Multifunction current interface Warning An external custom device (Overvoltage Protection) performs a signal state changeCheck the external signal or the input signal configuration
571Software State Inconsistency Occurs onceAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
572Power Limit Invalid The device data unit contains a wrong power limitCheck device data unit at the RECERBO -> interchanged!?
573Undertemperature Dependent Power Derating Derating because ambient temperature is too lowWait for higher ambient temperature
574CAN Stack Warning Too much traffic at the CAN busAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
579Developer Warning Software errorRun latest software update
581Special Purpose Utility (SPUI) Mode Active Setup MG50 or MG60 selectedJust for information – push enter; if wrong choose a different country setup
601CAN Bus Full Occurs onceRestart the inverter
602Blocked By Italy Autotest Autotest (Countrysetup:IT) not successfully finishedSetup Italy: Restart Autotest (Code 11111) until  the test is successful
607RCMU Continous Fault A residual current was detectedDisconnect inverter from DC and reconnect
608Power Stack Software Incompatibility Software incompatibility between the board in the inverterRun latest software update
609Configuration Value Out Of  Limits Configuration limits are outside of the limits in the RECERBO softwareRun latest software update
610CAN-Init failed Old SoftwareRun latest software update
614Active Event List Full More than 15 State Codes occur at the same timeInformative State Code; check Info Menu / Power Stage State
615RAM-Check – Invalid Bit Found Old SoftwareRun latest software update
668External I/O Error Device that is connected has opened or closedCheck the device that is connected (e.g. surge arrester)
701Solar Net – Node Type Out Of Range Wrong Solar Net numberInsert Solar Net number again
702Solar Net  – Receive Buffer Full Problems with Solar NetCheck Solar Net ring
703Solar Net – Send Buffer Full Problems with Solar Net ringCheck Solar Net ring
705Solar Net – Node Type Conflict Selected Fronius Solar Net number is already in useChange Solar Net number, must be unique
706CapKey – Get Version Failed Occurs once – communication errorAutomatic correction
707CapKey – Update Failed Occurs once – communication errorAutomatic correction
708CapKey – Reserved 1 Reserved – for future useReserved – for future use
709CapKey – Reserved 2 Reserved – for future useReserved – for future use
710Solar Net – Keep Alive Signal Missing no Solar Net connectioncheck Solar Net status at inverter
711EEPROM Write  – Wrong Data Length Software errorRun latest software update
712EEPROM Write – Descriptor Not Found Occurs once – communication errorAutomatic correction
713EEPROM Read – Descriptor Not Found Occurs once – communication errorAutomatic correction
714EEPROM Read Warning – CRC Header Fail Will Retry Occurs once – communication errorAutomatic correction
715EEPROM Read Error – Other error Occurs once – communication errorAutomatic correction
716Event Log EEPROM Drive Error Software errorRun latest software update
721EEPROM – Reinitialized Occurs once – communication errorAutomatic correction
722EEPROM – Wait Busy Timeout Occurs once – communication errorAutomatic correction
723EEPROM Write – Verify Fail Will Retry Occurs once – communication errorAutomatic correction
724EEPROM Write – Other Error Occurs once – communication errorAutomatic correction
725EEPROM Read – CRC Data Fail Give It Up Occurs once – communication errorAutomatic correction
726EEPROM Read – CRC Data Fail Give It Up Occurs once – communication errorAutomatic correction
727EEPROM Check Data Warning – All Data Corrupt Occurs once – communication errorAutomatic correction
730EEPROM Check Data – Data Restored Occurs once – communication errorAutomatic correction
731USB flash drive initializing error USB flash drive Read/Write protectedRemove Read/Write protection
732USB flash drive overcurrent USB flash drive ineligible due to too high currentUse another USB flash drive
733No USB flash drive inserted No USB flash drive insertedInsert USB flash drive
734No software update found on USB flash drive Software update has wrong format or namingName software update correctly (correct : Froxxxxx.upd, xx…. continuously number)
735No supported software update found on USB flash drive Old or Defective Software update on the USB flash driveLoad latest Software update onto the USB flash drive
736USB flash drive Read/Write error Incorrectly formatted USB flash drive (NTFS)Format USB flash drive (FAT32)
737Software update can not be read from the USB flash drive Software errorLoad latest Software update onto the USB flash drive
738Log-File can’t be created on the USB flash drive USB flash drive secured with a passwordDelete password protection
740USB flash drive enumeration error Incorrectly formatted USB flash drive (NTFS)Format USB flash drive (FAT32)
741USB flash drive logging write error Memory on USB flash drive fullDelete data from USB flash drive
743Software update failed Unplugged USB flash drive during Software updateReconnect USB flash drive and start software update again
745Software update checksum wrong Software errorDownload and install latest Software update
746Product Matrix Code (PMC) read error during software update Some Boards haven’t started completely yetWait until the inverter have started and start Software update again
751Real-Time Clock – Time Lost Inverter had no AC connection for longer than 5 daysSet time and date
752Real-Time Clock – Hardware Error Occurs once – communication errorAutomatic correction
754Real-Time Clock –  Time Set Time / date has been setInformative State Code
755EEPROM Data Written Data save process been successfullInformative State Code
757Real-Time Clock – Hardware Error Defective real time clock moduleReplace RECERBO board
758Real-Time Clock – Emergency Mode Occurs once – communication errorAutomatic correction
760System Crystal Broken Occurs once – communication errorAutomatic correction
761Device Data Unit Memory Read Error Device data unit is missing at the RECERBOFix Device data unit board on RECERBO
762Plugged Device Data Unit Read Error Plug connection problemCheck each plug connection in the inverter
765Random Number Generator Error Occurs once – communication errorAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
766Power Limit Not Found Plug connection problemCheck each plug connection in the inverter
767Power Limiter Communication Error Occurs once – communication errorAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
768Power Limit Not Identical Attached Device Data Unit is being connected or disconnected during feeding in operationAutomatic correction (State Code must be confirmed)
772Memory Not Available Attached Device Data Unit is being connected or disconnected during feeding in operation / Device Data Unit missingConnect Device Data Unit again and restart the inverter
773Update Group Zero No storage print is beeing connected to the RECERBOConnect Device Data Unit again and restart the inverter
775Power Stack Product Matrix Code Invalid Product Matrix Code can’t be read outAutomatic correction (restart inverter – AC/DC disconnect and reconnect)
777CAN Error Message Source Problem at any CAN nodeInformative State Code
778CAN Error Message State Code Problem at any CAN nodeInformative State Code
779CAN Node Error Reporting Problem at any CAN nodeInformative State Code
782Update Flash – CRC Error Occurs once – communication errorAutomatic correction
783Update Flash – Header CRC Error Occurs once – communication errorAutomatic correction
784Update Flash – Timeout Occurs once – communication errorAutomatic correction
785Update Flash – Read Value (Value Not Found) Problems during Software updateRestart Software update
787Update Flash – Read Value (Setup Not Found) Unable to find a setupRun latest software update
789Update Flash – Read Value (Header CRC Error) Wrong/defect data in flashRun latest software update
792Update Flash – Find Header (Header Not Found) Software update failedRestart Software update
794Update Flash – Find Header (Header Address Impossible) Wrong/defect data in flashRun latest software update
795CPLD Update successful CPLD Update successfulInformative State Code; NOTE: FIRMWARE UPDATE necessary
796CPLD Update failed CPLD Update failedrun CPLD Update again
797CPLD Update incompatible CPLD Update incompatiblerun CPLD Update again
Brisbane electrician testing fronius inverter

Fronius Symo Inverter Fault Codes

FAULT CODEISSUECAUSERESOLUTION
STATE 102AC VOLTAGE TOO HIGHThe inverter will be testing the grid. Once the grid conditions are within the permissable range set in the inverter, the inverter will resume feeding power back into the grid.Check the grid connections – if the issue remains or re-occurs contact your solar installer.
STATE 103AC VOLTAGE TOO LOW
STATE 105AC FREQUENCY TOO HIGH
STATE 106AC FREQUENCY TOO LOW
STATE 107AC GRID OUTSIDE PERMISSABLE LIMITS
STATE 108STAND ALONE OPERATION DETECTED
STATE 112RCMU ERROR
FAULT CODEISSUECAUSERESOLUTION
STATE 301OVERCURRENT (AC)Short term interruption while feeding energy into the grid due to over current in the inverter. The inverter will resume with startup.Fault is rectified automatically. If this state error code displays constantly, contact your nearest Fronius Solutions Partner Plus.
STATE 302OVERCURRENT (DC)
STATE 303POWER STAGE SET OVER TEMPERATUREShort term interruption while feeding energy into the grid due to over temperature. The inverter will resume with startup.Confirm all air vents are free of debris if necessary. Fault will rectify automatically. If this state error code displays constantly, contact your nearest Fronius Solutions Partner Plus.
STATE 304INTERNAL TEMPERATURE TOO HIGH
STATE 306LOW PV OUTPUT (INTERMEDIATE CIRCUIT VOLTAGE TOO LOW FOR FEEDING INTO THE GRID)Short term interruption while feeding energy into the grid. The inverter will resume with startup.Fault is rectified automatically. If error state displays constantly, contact your solar installer. (Normal for these codes to display in low light conditions)
STATE 307LOW PV VOLTAGE (DC INPUT VOLTAGE TOO LOW FOR FEEDING INTO THE GRID)
STATE 308INTERMEDIATE CIRCUIT OVERVOLTAGEShort term interruption while feeding energy into the grid. The inverter will resume with startup.Fault is rectified automatically. If error state displays constantly, contact your nearest Fronius Solutions Partner Plus.
STATE 309DC INPUT VOLTAGE MPPT-1 TOO HIGH
STATE 313DC INPUT VOLTAGE MPPT-2 TOO HIGH
FAULT CODEISSUECAUSERESOLUTION
STATE 401NO COMMUNICATION WITH POWER STAGE SET POSSIBLEThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 406POWER STAGE SET TEMPERATURE SENSOR FAULTYThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 407INTERNAL TEMPERATURE SENSOR FAULTYThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 408DC FEEDING INTO THE GRID, DETECTED.The inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 412FIXED VOLTAGE MODE HAS BEEN SELECTED INSTEAD OF MPP VOLTAGE MODE AND THE FIXED VOLTAGE HAS BEEN SET TO A TOO LOW OR TOO HIGH VALUEN/AIf this state code persists contact your solar power installer.
STATE 415SAFETY CUTOUT VIA OPTION CARD OR RECERBO HAS TRIGGEREDThe inverter is not feeding any energy into the gridIf the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 416NO COMMUNICATION BETWEEN POWER STAGE SET AND CONTROL SYSTEMThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 417HARDWARE ID PROBLEMThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 419UNIQUE ID CONFLICTThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 421HID RANGE ERRORThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 425NO COMMUNICATION POSSIBLE WITH THE POWER STAGE SETThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 426 – 428POSSIBLE HARDWARE FAULTThe inverter will automatically attempt to connect again. If possible, while resuming feeding energy into the grid.If the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 431SOFTWARE PROBLEMThe inverter is not feeding any energy into the gridCarry out an AC reset (switch AC breaker off and on) update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 436FUNCTION INCOMPATIBILITY (ONE OR MORE PC BOARDS IN THE INVERTER ARE NOT COMPATIBLE WITH EACHOTHER. E.G. AFTER A PC BOARD HAS BEEN REPLACED)The inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.Update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 437POWER STAGE SET PROBLEMThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.Update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 438FUNCTIONAL INCOMPATIBILITY (ONE OR MORE PC BOARDS IN THE INVERTER ARE NOT COMPATIBLE WITH EACHOTHER. E.G. AFTER A PC BOARD HAS BEEN REPLACED)The inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.Update the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 443INTERMEDIATE CIRCUIT VOLTAGE TOO LOW OR ASYMMETRICThe inverter is not feeding any energy into the gridIf the state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 445INVALID LIMIT VALUE SETTINGThe inverter is not feeding any energy into the gridUpdate the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 447INSULATION FAULTThe inverter is not feeding any energy into the grid for safety reasonsUpdate the Fronius inverter firmware. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 448NEUTRAL CONDUCTOR NOT CONNECTEDThe inverter is not feeding any energy into the grid for safety reasonsIf this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 450GUARD CANNOT BE FOUNDN/ACarry out an AC circuit breaker reset. If this state code persists, contact your closest Fronius Solutions Partner Plus.
STATE 451MEMORY ERROR DETECTEDThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 452COMMUNICATION ERROR BETWEEN THE PROCESSORSThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 453SHORT TERM GRID VOLTAGE ERRORThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 454SHORT TERM GRID FREQUENCY ERRORThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 456ANTI-ISLANDING FUNCTION IS NOT LONGER IMPLEMENTED CORRECTLYThe inverter will automatically attempt to connect again. If possible, will resume feeding energy into the grid.If this state code is displayed all the time, contact your closest Fronius Solutions Partner Plus.
STATE 457GRID RELAY STICKINGThe inverter is not feeding any energy into the gridContact your closest Fronius Solutions Partner Plus
STATE 459ERROR WHEN RECORDING THE MEASURING SIGNAL FOR THE INSULATION TESTN/AContact your closest Fronius Solutions Partner Plus
STATE 460REFERENCE VOLTAGE SOURCE FOR THE DIGITAL SIGNAL PROCESSOR (DSP) IS WORKING OUT OF TOLERANCEThe inverter is not feeding any energy into the gridContact your closest Fronius Solutions Partner Plus
STATE 461FAULT IN THE DSP DATA MEMORYThe inverter is not feeding any energy into the gridContact your closest Fronius Solutions Partner Plus
STATE 462ERROR WITH DC FEED MONITORING ROUTINEThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 463REVERSED AC POLARITY, AC CONNECTOR INSERTED INCORRECTLYThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 474RCMU SENSOR FAULTYThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 475SOLAR PANEL GROUND FAULT, INSULATION FAULT. (CONNECTION BETWEEN SOLAR PANEL AND GROUND)The inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 476DRIVER SUPPLY VOLTAGE TOO LOWThe inverter is not feeding any energy into the gridIf this state code keeps re-occurring, contact your solar power system installer
STATE 480 & 481FUNCTIONAL INCOMPATIBILITY (ONE OR MORE PC BOARDS ARE NOT COMPATIBLE WITH EACH OTHER; E.G., AFTER A PC BOARD HAS BEEN REPLACED)Update the Fronius inverter firmware, if this state code persistsContact your closest Fronius Solutions Partner Plus
STATE 482STARTUP INCOMPLETEReset AC breaker and complete startup procedureIf the state code is displayed all the time contact your local Fronius Solutions Partner Plus
STATE 483VOLTAGE UDC FIXED ON MPP2 STRING OUT OF LIMITSCheck the MPP settings, if the state code is displayed all the timeContact your local Fronius Solutions Partner Plus
STATE 485CAN TRANSMIT BUFFER IS FULLCheck the MPP settings, if the state code is displayed all the timeCARRY OUT AN AC CIRCUIT BREAKER RESET. (TURN BREAKER OFF THEN ON AGAIN) IF THE STATE CODE PERSISTS, CONTACT YOUR CLOSEST FRONIUS SOLUTIONS PARTNER PLUS.
FAULT CODEISSUECAUSERESOLUTION
STATE 502INSULATION ERROR ON THE SOLAR PANELSWarning message is shown on the displayIf this state code keeps re-occurring, contact your solar power installer.
STATE 509NO ENERGY FED INTO THE GRID IN THE PAST 24 HOURSWarning message is shown on the displayAcknowledge state code; check whether all the conditions for the problem feeder feeding into the grid have been met. If the state code continues to display, look out for further state codes.
STATE 515NO COMMUNICATION WITH FILTER POSSIBLEN/AIf the status code is displayed all the time, notify your local Fronius service partner plus.
STATE 516NO COMMUNICATION POSSIBLE WITH THE STORAGE UNITStorage unit warning messageIf the status code is displayed all the time, notify your local Fronius service partner plus.
STATE 517DERATING CAUSED BY TEMPERATURE TOO HIGHWhen 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 re-occurring contact your solar power installer.
STATE 522DC1 INPUT VOLTAGE TOO LOWThe DC voltage on input 1 of the inverter is too lowCheck voltage and polarity on input 1 of the inverter. If this state keeps re-occurring, contact your solar power installer.
STATE 523DC2 INPUT VOLTAGE TOO LOWThe DC voltage on input 2 of the inverter is too lowCheck voltage and polarity on input 2 of the inverter. If this state keeps re-occurring, contact your solar power installer.
STATE 558FUNCTIONAL INCOMPATIBILITY (ONE OR MORE PC BOARDS IN THE INVERTER ARE NOT COMPATIBLE WITH EACHOTHER. E.G. AFTER A PC BOARD HAS BEEN REPLACED)Possible error displays or malfunction on the inverterIf this state keeps re-occurring, contact your solar power installer.
STATE 560DERATING CAUSED BY OVER-FREQUENCYThis state 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 code will be rectified automatically. If this state code keeps re-occurring contact your solar power system installer.
STATE 566ARC DETECTOR SWITCHED OFF (e.g. during external arc monitoring)This state code is displayed every day until the arc detector is re-activated.No error, confirm status code by pressing ‘Enter’
STATE 567GRID VOLTAGE DEPENDANT POWER REDUCTION IS ACTIVEThis state code is a warning informing you that the grid voltage dependant 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 inverter’s terminals. This mode must be enabled by default in accordance with the latest Austrian standards.Grid voltage is higher than it should be, this state code could mean that your solar power output is being decreased to reduce further voltage rise within the grid.
FAULT CODEISSUECAUSERESOLUTION
STATE 705CONFLICT WHEN SETTING THE STRING INVERTER NUMBER (e.g.: NUMBER ALREADY ASSIGNED)NILCORRECT THE INVERTER NUMBER VIA THE SETUP MENU
STATE 721‘EEPROM’ HAS BEEN REINITIALISED OR ‘EEPROM’ IS FAULTYACKNOWLEDGE STATE CODE. IF THE STATE CODE IS DISPLAYED CONTINUOUSLY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS
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 CONTINUOUSLY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNERS PLUS
STATE 732OVER CURRENT ON USB STICKWARNING MESSAGE IS SHOWN ON THE DISPLAY
STATE 733NO USB STICK CONNECTEDCONNECT OR CHECK THE USB STICK. IF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS
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 FRONIUS SOLUTIONS PARTNERS PLUS
STATE 735UPDATE FILE DOES NOT MATCH THE DEVICE, UPDATE FILE TOO OLDWARNING MESSAGE APPEARS ON THE DISPLAY. UPDATE PROCESS IS INTERRUPTEDUPDATE THE INVERTER FIRMWARE WITH THE LATEST FIRMWARE AVAILABLE. IF THIS STATE CODE CONTINUES TO DISPLAY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS
STATE 736WRITE OR READ ERROR OCCURREDCHECK THE USB STICK AND DATA CONTAINED ON IT OR REPLACE USB STICK. NEVER UNPLUG A USB STICK IF THE DATA TRANSMISSION LED IS STILL FLASHING. IF STATE CODE CONTINUES, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 738LOG FILE CANNOT BE SAVED (e.g. USB STICK IS WRITE PROTECTED OR FULL)WARNING MESSAGE DISPLAYED ON THE SCREENCREATE STORAGE SPACE, REMOVE WRITE PROTECTION, CHECK OR REPLACE USB STICK IF NECESSARY. IF THE STATE CODE IS DISPLAYED CONTINUOUSLY CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 743ERROR OCCURRED DURING UPDATE PROCESSREPEAT THE UPDATE PROCESS, CHECK USB STICK. IF STATE CODE IS DISPLAYED CONTINUOUSLY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 745UPDATE FILE CORRUPTWARNING MESSAGE APPEARS ON THE DISPLAY, UPDATE PROCESS IS INTERRUPTED.RE-DOWNLOAD THE LATEST FRONIUS FIRMWARE. IF STATE CODE CONTINUES TO DISPLAY, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 751TIME LOSTRESET 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 SOLUTIONS PARTNER PLUS.
STATE 752REAL TIME CLOCK MODULE COMMUNICATION ERRORWARNING MESSAGE IS DISPLAYED ON THE SCREEN
STATE 757HARDWARE ERROR IN THE REAL TIME CLOCK MODULEERROR MESSAGE IS SHOWN ON THE INVERTER DISPLAYIF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 758INTERNAL ERROR – REAL TIME CLOCK MODULE IS IN EMERGENCY MODETIME MAY BE INACCURATE OR LOST (FEEDING ENERGY INTO THE GRID WILL BE NORMAL)IF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.
STATE 766EMERGENCY POWER DERATING HAS BEEN ACTIVATEDERROR MESSAGE IS SHOWN ON THE INVERTER DISPLAYIF STATE CODE IS DISPLAYED ALL THE TIME, CONTACT YOUR LOCAL FRONIUS SOLUTIONS PARTNER PLUS.

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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