fat ulx uk - 06 jpm 2012-05-22

CoverFAT for TripleLynx3-phase Danfoss Solar InverterOwner: PE-SSContact person: Jens MeilandtTel: +45 7488 2854FAT: Fault Assessment ToolVersion: see footer

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Quick GuideQuick OverviewOwner: JPMCustomerName?Customer type?InstallerEnd-userSales customerInverterType?Serial number?Check NavisionProblemWhat is the problem according to the customer?Transistor & Relay test failed.Which Failure code has the inverter ?361software Bug - solution new SW Controlboard 1,18/1,19 ( SW 3.10 ) if SW 3.00 update the SW If SW Below 1.12 update SW (old Com Card )

Description: Grid relay has failed (assumed open circuit)End-user: Call Danfoss ServiceInstaller: Exchange the inverter

Description of failure: HW: All SW: which one? Solarlog?? Customer must get the newest firmware from Solare Datensysteme!No communication with the datalogger?Low power productionSearch FailureNothing is shown in the displaySearch FailureNot connecting to gridSearch FailureConnects to grid but disconnects againSearch FailurePV details - modules and voltage etc.Search FailureFailure code in displaySearch FailureInverter smokesExchange

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Production too lowProduction too lowOwner: JPMPV layout?Module defect or shadow on it?OK1 or more PV inputs defect?ExchangeHow many PV inputs are used?1OK2OK3OKHow is the PV layout?

How are the PV modules connected?IndividualAsymmetrical layout:Is the PV power entered into the inverter?YesOKNoThen do itParallelAre all string voltages equal? Measure!YesExchangeNoCheck installation of the modulesIs the PV bridge set?YesOKNoInstall the PV bridgeAre the PV values OK?Displayed + measured.YesOKNoCheckt the PV installationDoes the inverter derate?YesWhat is the course of derating?Max TCheck conditions inside /outsideMax ACCheck grid (10 mins mean)Power AdjCall DNOReac powerFreq stabNoOnsite visit

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Display shows nothingDisplay shows nothingOwner: JPMYesonly LED lightyesYesExchangeNoOnsite visitDoes the display show somthingNOwhat does the display sage ?NoIs display cabel montet on the communication boardyesRestart the inverter ?

does it solved the problem ?yessolved by the service hotlineNoExchangeNOis the cabel montet on the control boardyesExchangeNoOnsite visitDoes the inverter connect to grid?YesAre the LEDS on the control board ON?YesCable between Com and Control Board mounted correctly on the boards?YesExchangeNoOnsite visitNoOnsite visitNoInstaller?YesIs the AC voltage OK? Displayed + measuredYesDC Switch turned ON?YesAre the LEDS on the control board ON?YesCable between Com and Control Board mounted correctly on the boards?YesExchangeNoOnsite visitNoOnsite visitNoSwitch the DC switch ONNoFuses OK?YesOnsite visitNoChange defect fusesNoIs the AC voltage OK? DisplayedYesDC Switch turned ON?YesOnsite visitNoSwitch the DC switch ONNoInstaller must check the installation

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Does not connect to gridDoes not connect to gridOwner: JPMAre the fuses OK?YesOKNoChange fusesFI/HPFI relay OK ?YesOKNoIs the inverter running when the FI/HPFI is turned ON?YesThe solution is to update the inverter SW. The SW in under development.NoIs the country settings the right oneYesOKNoIs the production time before week 360YesOnsite visitNoMake a 24h pasw for changing the country settings level 2Solved by HotlineWhat is the inverter status in the display?OffgridAre the AC values shown?

Are the shown AC values okYesAre the DC values shown?

Are the shown DC values OK?yesRestart the inverter.Switch DC AND AC off, wait 2 minutes and switch back on.

Does it help?Solved by HotlineNoCorrect the installationNoIs AC correctly installed?YesIs there a difference between the AC values from the display and the Meassured AC ValuesYesExchangeNoCorrect the installationConnectingIs the PV voltage within the limits?YesAre + / - correctly connected to the PV input? Measure!YesExchangeNoCorrect the installationNoCheck PV connection and the PV layout

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Connect to grid but disconnectsConnects to grid but disconnects againOwner: JPMStatus of the AC installation?Producing power to the grid?YesIs the production rigthyesOKLow?Check the Derate on the inverterNoAre the AC voltages OK? where is the AC messument - fusesyesOKnoCorrect the installationDoes the inverter derate?YesPV OK?YesOKNoCorrect the installationWhat is the course of derating?max TCheck conditions inside /outsidemax ACCheck grid (10 mins mean)NoOnsite visitAre the AC voltages overvoltage OK?YesOKNoCorrect the installationDoes more than one inverter switch off?YesOnsite visitNoExchangeIs the correct country chosen ?YesOKNoIs the production time before week 360YesOnsite visitNoMake a 24h pasw for changing the country settings level 2Solved by HotlineCheck logfiles/eventsOK?OKFailure?Depending on the failure code ?Onsite visitExchange

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Fault EventsFault EventsOwner: TJAEvent IDAreaDescriptionAction / DescriptionSWsolarlog coder01GridUGRID - low L1 S2Description: Grid voltage on phase 1 too low

End-user: check menu->status->phase1 voltage. Voltage on phase1 is ok wait 10 minutes. Does it reconnect? Onsite service needed Voltage on phase1 not ok check all fuses and the RCDo All ok 10 minutes. Does it reconnect? Onsite service neededo Not ok - Onsite service needed

Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it1,06Grid12GridUGRID - low L2 S2See event 1Grid23GridUGRID - low L3 S2See event 1Grid34GridUGRID - low L1 S1Description: Grid voltage on phase 1 too low


Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it1,06Grid45GridUGRID - low L2 S1see event 4Grid56GridUGRID - low L3 S1see event 4Grid67GridUGRID - mean L1End-user: Call installer

Installer: two options Larger cable (diameter to ensure lower voltage drop) between inverter and meter Program PF(P) TLX+ and PRO+ only Call DNO to get permission to increase limit (note: Ugrid_RMS_high)1,06Grid78GridUGRID - mean L2see event 7Grid89GridUGRID - mean L3see event 7Grid910GridUGRID - high L1 S1Description: Grid voltage on phase 1 too high

Call installer and inform about the phase1 voltage.End-user: check menu->status->phase1 voltage. Voltage on phase1 is ok wait 10 minutes. Does it reconnect? Onsite help needed Voltage on phase1 not ok onsite help needed call installerInstaller: Measure the actual grid voltage Ok call Danfoss service partner Not ok Call DNO to solve the problem1,06Grid1011GridUGRID - high L2 S1see event 10Grid1112GridUGRID - high L3 S1see event 10Grid1213GridUGRID - high L1 S2Description: Grid voltage on phase 1 too high

Call installer and inform about the phase1 voltage.End-user: check menu->status->phase1 voltage. Voltage on phase1 is ok wait 10 minutes. Does it reconnect? Onsite help needed Voltage on phase1 not ok onsite help needed call installer

Installer: Measure the actual grid voltage Ok call Danfoss service partner1,06Grid1314GridUGRID - high L2 S2see event 13Grid1415GridUGRID - high L3 S2see event 13Grid1516gridUGRID - momentary L1Description: Inverter has detected a voltage peak on the gridEnd-user: Call DNO to solve the problem1,06Grid1617gridUGRID - momentary L2see event 16Grid1718GridUGRID - momentary L3see event 16Grid1819GridFGRID - low L1Description: Grid freq. on phase 1 too low

Call installer and inform about the phase1 freq.End-user: check menu->status->phase1 freq. Freq. on phase1 is ok wait 10 minutes. Does it reconnect? Onsite service needed Freq. on phase1 not ok check all fuses and the RCDo All ok wait 10 minutes. Does it reconnect? Onsite service neededo Not ok - Onsite service needed

Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it1,06Grid1920GridFGRID - low L2see event 19Grid2021GridFGRID - low L3see event 19Grid2122GridFGRID - high L1Description: the grid frequency is out of spectrum!


Installer: Check AC installation If SW is below 2,10 - update SW call Danfoss service partner Ok call Danfoss service partner Not ok Fix it Grid must be checked1,06Grid2223GridFGRID - high L2see event 22Grid2324GridFGRID - high L3see event 22Grid2425GridLOM - 3 - L1Description: Phase-to-Phase voltage on phase L1-L2 too low

Call installer and inform about all three phase voltages.

End-user: check menu->status->phase1 voltage. Voltage on all three phases is ok wait 10 minutes. Does it reconnect? Onsite service needed Voltage on all three phases is not ok check all fuses and the RCDo All ok 10 minutes. Does it reconnect? Onsite service neededo Not ok - Onsite service needed

Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it1,06Grid2526GridLOM - 3 - L2see event 25Grid2627GridLOM - 3 - L3see event 25Grid2728GridLOM - ROCOF - L1Description: Rate Of Change Of Frequency too high

End-user: If the event re-occurs (several times each day) contact DNO

Installer: Check SW version update to SW 1,12 / 2,15 call Danfoss service partner1,06Grid2829GridLOM - ROCOF - L2see event 28Grid2930GridLOM - ROCOF - L3see event 28Grid3031GridIGRID - DC L1Description: DC grid current on phase 1 too high

End-user: Check SW version Status->blabla If lower than 2.15 or 1.12 a SW update is required. Call Service If 3.00 : update to SW 3.101,06Grid3132GridIGRID - DC L2see event 31Grid3233GridIGRID - DC L3see event 31Grid3334GridRCMU - high (over)Description: Residual Current Monitoring Unit (RCMU) has measured a too high current

End-user: Turn both DC and AC off and wait until the display turns off. Hereafter turn on DC and AC and observe if the event re-occurs. If the event re-occur, call the installer.

Installer: Check the PV installation. If ok, exchange the inverter1,06Grid3435GridRCMU - step (S3)see event 341,06Grid3536GridRCMU - step (S2)see event 341,06Grid3637GridRCMU - step (S1)see event 341,06Grid3738GridInsulation testDoes not exist anymore. Insulation impedance - under1,06Grid4039Grid..Does not exist anymore???? Investigate!Grid4140GridThe AC grid was longer then 10 minutes out of specDescription: AC Grid out of spec for more than 10 minutes (freq. and/or voltage)

End-user: Call installer and inform about the freq. and voltage, SW version and grid code settings (country settings)

Installer: onsiteCheck AC installation

If SW version is below 2.15 an update is needed.Check the log for other events1,06Grid4241GridFault ride through in SW 1.09 wire L1Description: Inverter has detected that grid voltage was below certain level End-user: Call installer if the problems re-occurs (several times each day)Installer: onsite - Perform grid analysis

Check if MV or LV ( Germany )setting, there is a failure in the LV Germany settingsFix : New Grid code1,102,10Grid4342GridFault ride through in SW 1.09 wire L2see event 411,102,10Grid4443GridFault ride through in SW 1.09 wire L3see event 411,102,10Grid4544GridIgridDC detector L1Description: DC grid current on phase 1 too high

End-user: Check SW version Status->blabla If lower than 2.15 or 1.12 a SW update is required. Call Service If 2.15 or higher: ??? currently no solution!Active in SW 1,10 - 2,102,10Grid4645GridIgridDC detector L2see event 442,10Grid4746GridIgridDC detector L3see event 442,10Grid4847GridPLA - lowDescription: The inverter disconnects from grid if PLA is below 3% of nominal powerEnd-user: No action. Contact DNO to get status. Installer: No action.

Active in SW 1,10 - 2,102,10Grid4948GridFGRID - low L1 under (S2)Description: Grid freq. on phase 1 too low


Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it Active in SW 2,102,10Grid5049GridFGRID - low L2 under (S2)see event 482,10Grid5150GridFGRID - low L3 under (S2)see event 482,10Grid5251GridFGRID - high L1 over(S2)Description: Grid freq. on phase 1 too High


Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it Active in SW 2,102,10Grid5352GridFGRID - high L2 over(S2)see event 512,10Grid5453GridFGRID - high L3 over(S2)see event 512,10Grid5554Not uset2,10Grid5655Not uset56Not uset57Not uset58Not uset59Not uset60Not uset61Not uset62Not uset63Not uset64Not uset65Not uset66Not uset67Not uset68Not uset69Not uset70Not uset71Not uset72Not uset73Not uset74Not uset75Not uset76Not uset77Not uset78Not uset79Not uset80Not uset81Not uset82Not uset83Not uset84Not uset85Not uset86Not uset87Not uset88Not uset89Not uset90Not uset91Not uset92Not uset93Not uset94Not uset95Not uset96Not uset97Not uset98Not uset99Not uset100PVIPV_NEGATIVE_PV1Description: The input current on PV1 is negative the polarity of the PV string is wrong. Should only appear during or immediately after installation or service.

End-user: call installer

Installer: Check PV installation Is the polarity of the PV strings reversed (e.g. PV plus-wire connected with inverter minus-input) -> Fix it! Ok call Danfoss service partnerGrid57101PVIPV_NEGATIVE_PV2event 100Grid58102PVIPV_NEGATIVE_PV3event 100Grid59103PVIPV - high PV-input 1IPV PV current is too high > 13,5 A - reset = IPV < 1A

Description: The input current on PV1 is too high Too many PV modules connected in parallel. Should only appear on newly installed systems.


Installer: Check PV installation how many strings are in parallel? What are their current ratings? Have the inverter derated on PV current [log->derate, level 1]If too many strings are in parallel, the fix it by:1) Connect the inverter inputs in parallel to distribute the current into the inverter2) Install a second inverter

Check the PV layout1,06PV107104PVIPV - high PV-input 2event 103PV108105PVIPV - high PV-input 3event 103PV109106PVEPV - diffDoes not exist??

Difference > 10% - CLEARANCE = Difference 10% - CLEARANCE = Difference 10% - CLEARANCE = Difference photovoltaic->isolation resistance] and call installer

Installer: Check minimum recorded isolation resistance [status->photovoltaic->isolation resistance, level 1]

Go through the PV installation and check connectors, cables and modules for insulation-failure.

If the failure is present while on-site, disconnect PV input 1 and restart the inverter to locate the affected PV string. Continue with strings 2 and 3. See section in reference manual and copy it to this document.The isolation resistor between ground and PV is too low. After 10 minutes it will try again! Check if PE is installed correct! Perhaps the modules or pv cables are wet?1,06PV122116PVPV - wrong polarityDescription: Wrong PV polarity.Installer: Check if the inverter starts when connecting each PV input separately. Be aware of parallel connections.

check PV polarity - Active in SW 2,102.10PV123117Not uset118Not uset119Not uset120Not uset121Not uset122Not uset123Not uset124Not uset125Not uset126Not uset127Not uset128Not uset129Not uset130Not uset131Not uset132Not uset133Not uset134Not uset135Not uset136Not uset137Not uset138Not uset139Not uset140Not uset141Not uset142Not uset143Not uset144Not uset145Not uset146Not uset147Not uset148Not uset149Not uset150Not uset151Not uset152Not uset153Not uset154Not uset155Not uset156Not uset157Not uset158Not uset159Not uset160Not uset161Not uset162Not uset163Not uset164Not uset165Not uset166Not uset167Not uset168Not uset169Not uset170Not uset171Not uset172Not uset173Not uset174Not uset175Not uset176Not uset177Not uset178Not uset179Not uset180Not uset181Not uset182Not uset183Not uset184Not uset185Not uset186Not uset187Not uset188Not uset189Not uset190Not uset191Not uset192Not uset193Not uset194Not uset195Not uset196Not uset197Not uset198Not uset199Not uset200Not uset201InternalTEMP - powerDescription: Internal temperature too high

Is the inverter covered or is the ventilation duct (heat sink) blocked? Call installer for service.

Installer: Has the inverter derated on temperature [log->derate, level 1], have the inverter reported event 211 (fan) NO call Danfoss service partner Yes, clean heat sink / remove obstruction / see description for event 211

Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange)Over (S1) For occurrence > 100 C For clearance < 90C1,06Fail114202InternalTEMP - powerDescription: Internal temperature too highHow to identify root causeIs the inverter covered or is the ventilation duct (heat sink) blocked? Call installer for service.


Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 100 C For clearance < 90CFail225203InternalTEMP - powerOver (S1) For occurrence > 100 C For clearance < 90C

Description: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange)Fail226204InternalTEMP - powerDescription: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 100 C For clearance < 90CFail227205InternalTEMP - PCB The temperature inside the inverter is too highDescription: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 100 C For clearance < 90C1,06Fail228206InternalTEMP - PCB The temperature inside the inverter is too highDescription: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange)Over (S1) For occurrence > 85 C For clearance < 75CFail229207InternalTEMP - PCB The temperature inside the inverter is too highDescription: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 85 C For clearance < 75CFail230208InternalTEMP - PCB The temperature inside the inverter is too highDescription: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 85 C For clearance < 75CFail231209InternalUDCbus - highcheck in Display the pv voltage (if it is over the maximum) could also be to high voltage on the AC side. Voltage is out of specs.1,06Fail232210InternalUDCbus - highFor occurrence > 435For clearance < 435Fail233211InternalFAN_RPM_LOWDescription: Fan speed too low

End-user: Is the inverter fan blocked? If yes unblockIf no - Call installer for service.

No Tacko signal from fan check the fans! Perhaps defect fan. Check the event-logCheck the surroundings IF ok and only 1inverter Exchange else Onsite1,06Fail234212Internalthe intermediate voltage inside the inverter is out of balanceThe failure comes when unit is off grid and there it out of balance between the capacitors. shut down AC & DC, wait 5-10 minutes and start again.

if the failure comes again, then exchange

It seems that the error 212(trafo and Gate driver problem ) can trigger the event 2411,06Fail235213InternalUGRID UINV DIFF HIGH L1Description: Internal error. Voltage measured before and after the relay differs with more than 20V

End-user: Call installer

Installer: Call Danfoss Service Partner

Plausibility error between internal measurements - If the Voltage between the phases is over 20 V difference, then change inverterFail236214InternalUGRID UINV DIFF HIGH L2see event 213Fail237215InternalUGRID UINV DIFF HIGH L3see event 2131,06Fail238216InternalHW Trip L1Description: Current measured on AC side too high.End-user: Call installerInstaller: Call Danfoss Service Partner. If SW version is below 1.09 update to latest SW version.

The grid current is too high For occurrence i| > 60 A For clearance |i| < 60 A1,06Fail239217InternalHW Trip L2see event 213Fail240218InternalHW Trip L3see event 213Fail241219InternalIPV HW trip 1Defined, but cannot be displayed

For occurrence -5 A 15 A For clearance -5 A > i < 15 A1,06Fail242220InternalIPV HW trip 2Defined, but cannot be displayed

For occurrence -5 A 15 A For clearance -5 A > i < 15 AFail243221InternalIPV HW trip 3Does not exist??

check the SW version. SW 1.09 should help for this problem. its cause of bad grid! if the inverter shows other failures afterwards (self test failures) change the inverterFor occurrence -5 A 15 A For clearance -5 A > i < 15 AFail244222InternalAuto testItaly - Auto testSomeone commanded an Auto test. No action required1,06Fail248223GridIgridHighDoes not exist?? Replaced by events 255-257

For occurrence IgridSum > 35 AFor clearance reset1,09Fail251224InternalRCMU_OVERRANGE, HW trip RCMUDescription: Defect RCMU circuit, should also include events 350-352 from self-test (fail safe)

End-user: Call installerInstaller: Call Service partner to have the inverter replaced.

Value or broken wire in the RCMU - reset inverter or change inverterFor occurrence Value or broken wireFor clearance reset1,06Fail350225Fail safeMemoryDescription: Failure in Memory/Eeprom control board


Installer: Replace inverter1,06Fail351226Fail safeMemoryDescription: Failure in Memory/Eeprom comm board


Installer: Replace inverterFail352227Fail safeMemoryDescription: Failure in Memory/Eeprom Aux board


Installer: Replace inverterFail353228Fail safeMemoryEEPROM - PowerSee event 227Fail354229Fail safeMemoryFlash - CTRLSee event 2271,06Fail355230Fail safeMemoryFlash - CommSee event 227Fail356231Fail safeMemoryFlash - FSPSee event 227Fail357232Fail safeMemoryDoes not exist!Flash - xxxFail358233Fail safeMemoryDescription: Memory check failed - control boardEnd-user: Restart the inverter. If error persists call installerInstaller: Replace inverter1,06Fail359234Fail safeMemoryRAM - Commsee event 233Fail360235Fail safeMemoryRAM - FSPsee event 233Fail361236Fail safeMemoryDoes not exist!RAM - xxxFail362237Fail safeMemoryRAM - CTRLsee event 2331,06Fail363238Fail safeMemoryRAM - Commsee event 233Fail364239Fail safeMemoryRAM - FSP see event 233Fail365240Fail safeMemoryDoes not exist!RAM - xxxFail366241Fail safeCOMMDescription: No contact to sensor

End-user: Restart the inverter. If error persists call installer

Installer: Replace inverter

It seems that the error 212(trafo and Gate driver problem ) can trigger the event 2411,06Fail367242InternalCOMMDescription: Communication between control board and control board failed for more than 10 sec.



NO Communication - reset inverter - change inverter

It seems that the error 242 and 1000 is the ( AC Standby problem ) event is seen after Sundown on the inverter - Exchange inverter1,06Fail368243Internalinternal communication errorDescription: Internal communication errorEnd-user: Restart the inverter. If error persists call installerInstaller: Replace inverter1,06Fail369244Internalinternal communication errorDescription: Internal communication errorEnd-user: Restart the inverter. If error persists call installerInstaller: Replace inverterFail370245InternalCover OpenCannot be displayed after SW version 2.01 (new comm. Boards introduced week 37, 2010)246GridA grid event was detected and inverter was stopped by the redundant safety circuitDescription: Functional Safety processor detected grid event

End-user: Check event log for other grid events (1-55) and follow the instructions for these events. If the error persist call installer

Installer: If the error persists after 24 hours. Replace the inverter.

normally it is an failure after some grid events there was before. Check event-log. if no other events check it after 24 hours again, if still the failure, then exchange1,06Fail372247InternalA Plausibility test in the functional safety processor has failed.Description: A plausibility fault has occurred in the functional satefy processor



can be a failure after some grid events (when the grid is bad) else change the inverter1,06Fail373248Fail safeself test FailedDescription: Self test failed

End-user: Check event log for other events and follow the instructions for these events. If the error persist call installer

Installer: Replace the inverter.249Internalinternal communication errorsee event 243

End-user: Restart the inverter. If error persists call installerInstaller: Replace inverter1,06Fail375250251InternalThe functional safety processor has reported fail safe.See event 248

there should be other safety failures.. normally it doesn't is the only one. If it is, try to restart! AC & DC off. If the failure comes again, change inverter.1,06Fail377252GridIgrid High L1Cannot be displayed???253GridIgrid High L2Cannot be displayed???254GridIgrid High L3Cannot be displayed???255InternalGrid disconnect - UgridAbsMeanHig anti-islanding events are logged L1Description: Anti Islanding event logged (better description needed)

End-user: Check event log for other grid events (1-55) and follow the instructions for these events. If the error persist call installer.

Installer: Replace the inverter.

Grid disconnect - UgridAbsMeanHighanti-islanding events are logged L1For occurrence |U| sum > 253 VFor clearance 2 sec1,09256InternalGrid disconnect - UgridAbsMeanHigh anti-islanding events are logged L2see event 255257InternalGrid disconnect - UgridAbsMeanHigh anti-islanding events are logged L3see event 255258InternalUDCbus - overvoltageDescription: DC bus overvoltage

End-user: If problem persists call installer.

Installer: Check PV installation/layout.

DC-bus capacitors exceeds the maximum limit for the inverter. The inverter continues normal operation when the voltage level is lowered to a level within limitsFor occurrence > 1010For clearance < 10081,09 /2,01259Fail safePV ISO internal calc. diffDescription: Internal parameter too lowEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter

Insulation test Difference - Active in SW 2,102,10260Fail safePV Delta VEN too lowDescription: Unable to change the voltage between ground and neutral during isolation test (by less than 10 V)End-user: Call Danfoss ServiceInstaller: Check the PV installation for isolation error. If ok, exchange the inverter.

- Active in SW 2,102,10261Fail safeBooster transistor is shot circuitedDescription: Short circuit boost transistorEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter

- Active in SW 2,10

Exchange2,10262Fail safeBooster transistor is shot circuitedDescription: Short circuit boost transistor or wrong PV polarityEnd-user: Call Danfoss Service/installerInstaller: Check the PV installation for polarity errors. If ok, exchange the inverter.

- Active in SW 2,102,10263Not uset264Not uset265Not uset266Not uset267Not uset268Not uset269Not uset270Not uset271Not uset272Not uset273Not uset274Not uset275Not uset276Not uset277Not uset278Not uset279Not uset280Not uset281Not uset282Not uset283Not uset284Not uset285Not uset286Not uset287Not uset288Not uset289Not uset290Not uset291Not uset292Not uset293Not uset294Not uset295Not uset296Not uset297Not uset298Not uset299Not uset300de-rateIgrid L1Cannot be displayed???

Derate - Igrid L1For occurrence >22AFor clearance ? 22AFor clearance ? 22AFor clearance ? 5000WFor clearance < 5000W1,06304de-ratePgrid L2Cannot be displayed???

Derate Pgrid L2For occurrence > 5000WFor clearance < 5000W305de-ratePgrid L3Cannot be displayed???

Derate Pgrid L3For occurrence > 5000WFor clearance < 5000W306de-rateUgrid L1Cannot be displayed???

For occurrence VariableFor clearance Variable1,06307de-rateUgrid L2Cannot be displayed???

For occurrence VariableFor clearance Variable308de-rateUgrid L3Cannot be displayed???

For occurrence VariableFor clearance Variable309de-rateIPV 1Cannot be displayed???

Derate IPV 1For occurrence > 12AFor clearance < 12A1,06310de-rateIPV 2Cannot be displayed???

Derate IPV 2For occurrence > 12AFor clearance < 12A311de-rateIPV 3Cannot be displayed???

Derate IPV 3For occurrence > 12AFor clearance < 12A312de-ratePPV 1Cannot be displayed???

Derate PPV 1 For occurrence > 6000WFor clearance < 6000W1,06313de-ratePPV 2Cannot be displayed???

Derate PPV 1 For occurrence > 6000WFor clearance < 6000W314de-ratePPV 3Cannot be displayed???

Derate PPV 1 For occurrence > 6000WFor clearance < 6000W315de-rateTpowerCannot be displayed???

Derate - TpowerFor occurrence > 85 CFor clearance < 85 C1,06316de-rateTpowerCannot be displayed???

Derate - TpowerFor occurrence > 85 CFor clearance < 85 C317De-rateTpowerCannot be displayed???

Derate - TpowerFor occurrence > 85 CFor clearance < 85 C318de-rateTpowerCannot be displayed???

Derate - TpowerFor occurrence > 85 CFor clearance < 85 C319de-rateTPCBCannot be displayed???

Derate TPCBFor occurrence > 75 CFor clearance < 75 C1,06320de-rateTPCBCannot be displayed???

Derate TPCBFor occurrence > 75 CFor clearance < 75 C321de-rateTPCBCannot be displayed???


Derate TPCBFor occurrence > 75 CFor clearance < 75 C323Not uset324Not uset325Not uset326Not uset327Not uset328Not uset329Not uset330Not uset331Not uset332Not uset333Not uset334Not uset335Not uset336Not uset337Not uset338Not uset339Not uset340Not uset341Not uset342Not uset343Not uset344Not uset345Not uset346Not uset347Not uset348Not uset349Not uset350Fail safeRCMU self-test failed.Description: DC bias in RCMU too high during self testEnd-user: Call Danfoss Service/installerInstaller: Exchange the inverter.

For occurrence - RMS and mean above 25 mA (Value from plausibility test table)?a. Yes Go to fail safe and report Fail Safe (after three retries). Exchange inverter1,06351Fail safeRCMU self-test failed.For occurrence - mean above 25 mA (Value from plausibility test table)?a. Yes Go to fail safe and report Fail Safe (after three retries).For clearance - Reset - if not Exchange inverter1,06352Fail safeRCMU self-test failed.Description: RCMU cannot detect step (of 25 mA) in residual current End-user: Call Danfoss Service/installerInstaller: Exchange the inverter.

For occurrence increase in RMS value below 25 mA? a. Yes Go to fail safe and report Fail Safe (after three retries). For clearance

-Exchange inverter1,06353Fail safe353-355 is pv side.Description: Short circuit inverter transistorEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter1,06354Fail safe353-355 is pv side.Description: Short circuit inverter transistor (average)End-user: Call Danfoss ServiceInstaller: Exchange the inverter355Fail safe353-355 is pv side..356Fail safeTransistor & Relay test failed.Description: Test of inverter relay and voltage measurements cannot be performedEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter1.04357Fail safeTransistor & Relay test failed.Description: Inverter relay has failed (assumed welded)End-user: Call Danfoss ServiceInstaller: Exchange the inverter1.04358Fail safeTransistor & Relay test failed.Description: Inverter relay has failed (assumed welded)End-user: Call Danfoss ServiceInstaller: Exchange the inverter1.04359Fail safeTransistor & Relay test failed.Description: Inverter relay or transistor has failed (assumed open circuit)End-user: Call Danfoss ServiceInstaller: Exchange the inverter1.04360Fail safeTransistor & Relay test failed.Description: Inverter relay or transistor has failed (assumed open circuit)End-user: Call Danfoss ServiceInstaller: Exchange the inverter1.04361Fail safeTransistor & Relay test failed.software Bug - solution new SW Controlboard 1,18/1,19 ( SW 3.10 ) if SW 3.00 update the SW If SW Below 1.12 update SW (old Com Card )


Description of failure: HW: All SW: status->phase1 voltage. Voltage on phase1 is ok wait 10 minutes. Does it reconnect? Onsite service needed Voltage on phase1 not ok check all fuses and the RCDo All ok 10 minutes. Does it reconnect? Onsite service neededo Not ok - Onsite service needed

Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it2GridUGRID - low L2 S2See event 13GridUGRID - low L3 S2See event 14Grid='Fault Events'!C8Description: Grid voltage on phase 1 too low


Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it5GridUGRID - low L2 S1see event 46GridUGRID - low L3 S1see event 47GridUGRID - mean L1End-user: Call installer

Installer: two options Larger cable (diameter to ensure lower voltage drop) between inverter and meter Program PF(P) TLX+ and PRO+ only Call DNO to get permission to increase limit (note: Ugrid_RMS_high)8GridUGRID - mean L2see event 79GridUGRID - mean L3see event 710GridUGRID - high L1 S1Description: Grid voltage on phase 1 too high

Call installer and inform about the phase1 voltage.End-user: check menu->status->phase1 voltage. Voltage on phase1 is ok wait 10 minutes. Does it reconnect? Onsite help needed Voltage on phase1 not ok onsite help needed call installerInstaller: Measure the actual grid voltage Ok call Danfoss service partner Not ok Call DNO to solve the problem11GridUGRID - high L2 S1see event 1012GridUGRID - high L3 S1see event 1013GridUGRID - high L1 S2Description: Grid voltage on phase 1 too high

Call installer and inform about the phase1 voltage.End-user: check menu->status->phase1 voltage. Voltage on phase1 is ok wait 10 minutes. Does it reconnect? Onsite help needed Voltage on phase1 not ok onsite help needed call installer

Installer: Measure the actual grid voltage Ok call Danfoss service partner14GridUGRID - high L2 S2see event 1315GridUGRID - high L3 S2see event 1316gridUGRID - momentary L1Description: Inverter has detected a voltage peak on the gridEnd-user: Call DNO to solve the problem17gridUGRID - momentary L2see event 1618GridUGRID - momentary L3see event 1619GridFGRID - low L1Description: Grid freq. on phase 1 too low


Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it20GridFGRID - low L2see event 1921GridFGRID - low L3see event 1922GridFGRID - high L1Description: the grid frequency is out of spectrum!


Installer: Check AC installation If SW is below 2,10 - update SW call Danfoss service partner Ok call Danfoss service partner Not ok Fix it Grid must be checked23GridFGRID - high L2see event 2224GridFGRID - high L3see event 2225GridLOM - 3 - L1Description: Phase-to-Phase voltage on phase L1-L2 too low

Call installer and inform about all three phase voltages.

End-user: check menu->status->phase1 voltage. Voltage on all three phases is ok wait 10 minutes. Does it reconnect? Onsite service needed Voltage on all three phases is not ok check all fuses and the RCDo All ok 10 minutes. Does it reconnect? Onsite service neededo Not ok - Onsite service needed

Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it26GridLOM - 3 - L2see event 2527GridLOM - 3 - L3see event 2528GridLOM - ROCOF - L1Description: Rate Of Change Of Frequency too high

End-user: If the event re-occurs (several times each day) contact DNO

Installer: Check SW version update to SW 1,12 / 2,15 call Danfoss service partner29GridLOM - ROCOF - L2see event 2830GridLOM - ROCOF - L3see event 2831GridIGRID - DC L1Description: DC grid current on phase 1 too high

End-user: Check SW version Status->blabla If lower than 2.15 or 1.12 a SW update is required. Call Service If 3.00 : update to SW 3.1032GridIGRID - DC L2see event 3133GridIGRID - DC L3see event 3134GridRCMU - high (over)Description: Residual Current Monitoring Unit (RCMU) has measured a too high current

End-user: Turn both DC and AC off and wait until the display turns off. Hereafter turn on DC and AC and observe if the event re-occurs. If the event re-occur, call the installer.

Installer: Check the PV installation. If ok, exchange the inverter35GridRCMU - step (S3)see event 3436GridRCMU - step (S2)see event 3437GridRCMU - step (S1)see event 3438GridInsulation testDoes not exist anymore. Insulation impedance - under39Grid..Does not exist anymore???? Investigate!40GridThe AC grid was longer then 10 minutes out of specDescription: AC Grid out of spec for more than 10 minutes (freq. and/or voltage)

End-user: Call installer and inform about the freq. and voltage, SW version and grid code settings (country settings)

Installer: onsiteCheck AC installation

If SW version is below 2.15 an update is needed.Check the log for other events41GridFault ride through in SW 1.09 wire L1Description: Inverter has detected that grid voltage was below certain level End-user: Call installer if the problems re-occurs (several times each day)Installer: onsite - Perform grid analysis

Check if MV or LV ( Germany )setting, there is a failure in the LV Germany settingsFix : New Grid code42GridFault ride through in SW 1.09 wire L2see event 4143GridFault ride through in SW 1.09 wire L3see event 4144GridIgridDC detector L1Description: DC grid current on phase 1 too high

End-user: Check SW version Status->blabla If lower than 2.15 or 1.12 a SW update is required. Call Service If 2.15 or higher: ??? currently no solution!Active in SW 1,10 - 2,1045GridIgridDC detector L2see event 4446GridIgridDC detector L3see event 4448GridFGRID - low L1 under (S2)Description: Grid freq. on phase 1 too low


Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it Active in SW 2,1049GridFGRID - low L2 under (S2)see event 4850GridFGRID - low L3 under (S2)see event 4851GridFGRID - high L1 over(S2)Description: Grid freq. on phase 1 too High


Installer: Check AC installation Ok call Danfoss service partner Not ok Fix it Active in SW 2,1052GridFGRID - high L2 over(S2)see event 5153GridFGRID - high L3 over(S2)see event 51223GridIgridHighDoes not exist?? Replaced by events 255-257

For occurrence IgridSum > 35 AFor clearance reset246GridA grid event was detected and inverter was stopped by the redundant safety circuitDescription: Functional Safety processor detected grid event



normally it is an failure after some grid events there was before. Check event-log. if no other events check it after 24 hours again, if still the failure, then exchange

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Fault Events PVFault EventsOwner: TJAEvent IDAreaDescriptionAction100PVIPV_NEGATIVE_PV1Description: The input current on PV1 is negative the polarity of the PV string is wrong. Should only appear during or immediately after installation or service.


Installer: Check PV installation Is the polarity of the PV strings reversed (e.g. PV plus-wire connected with inverter minus-input) -> Fix it! Ok call Danfoss service partner101PVIPV_NEGATIVE_PV2event 100102PVIPV_NEGATIVE_PV3event 100103PVIPV - high PV-input 1IPV PV current is too high > 13,5 A - reset = IPV < 1A

Description: The input current on PV1 is too high Too many PV modules connected in parallel. Should only appear on newly installed systems.


Installer: Check PV installation how many strings are in parallel? What are their current ratings? Have the inverter derated on PV current [log->derate, level 1]If too many strings are in parallel, the fix it by:1) Connect the inverter inputs in parallel to distribute the current into the inverter2) Install a second inverter

Check the PV layout104PVIPV - high PV-input 2event 103105PVIPV - high PV-input 3event 103106PVEPV - diffDoes not exist??

Difference > 10% - CLEARANCE = Difference 10% - CLEARANCE = Difference 10% - CLEARANCE = Difference photovoltaic->isolation resistance] and call installer

Installer: Check minimum recorded isolation resistance [status->photovoltaic->isolation resistance, level 1]

Go through the PV installation and check connectors, cables and modules for insulation-failure.

If the failure is present while on-site, disconnect PV input 1 and restart the inverter to locate the affected PV string. Continue with strings 2 and 3. See section in reference manual and copy it to this document.The isolation resistor between ground and PV is too low. After 10 minutes it will try again! Check if PE is installed correct! Perhaps the modules or pv cables are wet?116PVPV - wrong polarityDescription: Wrong PV polarity.Installer: Check if the inverter starts when connecting each PV input separately. Be aware of parallel connections.

check PV polarity - Active in SW 2,10

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Fault Events InternalFault EventsOwner: TJAEvent IDAreaDescriptionAction201InternalTEMP - powerDescription: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange)Over (S1) For occurrence > 100 C For clearance < 90C202InternalTEMP - powerDescription: Internal temperature too highHow to identify root causeIs the inverter covered or is the ventilation duct (heat sink) blocked? Call installer for service.


Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 100 C For clearance < 90C203InternalTEMP - powerOver (S1) For occurrence > 100 C For clearance < 90C

Description: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange)204InternalTEMP - powerDescription: Internal temperature too high



Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 100 C For clearance < 90C205InternalTEMP - PCB The temperature inside the inverter is too highDescription: Internal temperature too high






Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange)Over (S1) For occurrence > 85 C For clearance < 75C207InternalTEMP - PCB The temperature inside the inverter is too highDescription: Internal temperature too high






Check the airflow How are the conditions?? is the inverter mounted in the sun or something like that? check if more events came! if all ok, then it could be the temp sensor (exchange) Over (S1) For occurrence > 85 C For clearance < 75C209InternalUDCbus - highcheck in Display the pv voltage (if it is over the maximum) could also be to high voltage on the AC side. Voltage is out of specs.210InternalUDCbus - highFor occurrence > 435For clearance < 435211InternalFAN_RPM_LOWDescription: Fan speed too low

End-user: Is the inverter fan blocked? If yes unblockIf no - Call installer for service.

No Tacko signal from fan check the fans! Perhaps defect fan. Check the event-logCheck the surroundings IF ok and only 1inverter Exchange else Onsite212Internalthe intermediate voltage inside the inverter is out of balanceThe failure comes when unit is off grid and there it out of balance between the capacitors. shut down AC & DC, wait 5-10 minutes and start again.

if the failure comes again, then exchange

It seems that the error 212(trafo and Gate driver problem ) can trigger the event 241213214215InternalUGRID UINV DIFF HIGH L3see event 213216InternalHW Trip L1Description: Current measured on AC side too high.End-user: Call installerInstaller: Call Danfoss Service Partner. If SW version is below 1.09 update to latest SW version.

The grid current is too high For occurrence i| > 60 A For clearance |i| < 60 A217InternalHW Trip L2see event 213218InternalHW Trip L3see event 213219InternalIPV HW trip 1Defined, but cannot be displayed

For occurrence -5 A 15 A For clearance -5 A > i < 15 A220InternalIPV HW trip 2Defined, but cannot be displayed

For occurrence -5 A 15 A For clearance -5 A > i < 15 A221InternalIPV HW trip 3Does not exist??

check the SW version. SW 1.09 should help for this problem. its cause of bad grid! if the inverter shows other failures afterwards (self test failures) change the inverterFor occurrence -5 A 15 A For clearance -5 A > i < 15 A222InternalAuto testItaly - Auto testSomeone commanded an Auto test. No action required224InternalRCMU_OVERRANGE, HW trip RCMUDescription: Defect RCMU circuit, should also include events 350-352 from self-test (fail safe)

End-user: Call installerInstaller: Call Service partner to have the inverter replaced.

Value or broken wire in the RCMU - reset inverter or change inverterFor occurrence Value or broken wireFor clearance reset242InternalCOMMDescription: Communication between control board and control board failed for more than 10 sec.



NO Communication - reset inverter - change inverter

It seems that the error 242 and 1000 is the ( AC Standby problem ) event is seen after Sundown on the inverter - Exchange inverter243Internalinternal communication errorDescription: Internal communication errorEnd-user: Restart the inverter. If error persists call installerInstaller: Replace inverter244Internalinternal communication errorDescription: Internal communication errorEnd-user: Restart the inverter. If error persists call installerInstaller: Replace inverter246InternalA grid event was detected and inverter was stopped by the redundant safety circuitnormally it is an failure after some grid events there was before. Check event-log. if no other events check it after 24 hours again, if still the failure, then exchange247InternalA Plausibility test in the functional safety processor has failed.Description: A plausibility fault has occurred in the functional satefy processor



can be a failure after some grid events (when the grid is bad) else change the inverter249Internalinternal communication errorsee event 243

End-user: Restart the inverter. If error persists call installerInstaller: Replace inverter251InternalThe functional safety processor has reported fail safe.See event 248

there should be other safety failures.. normally it doesn't is the only one. If it is, try to restart! AC & DC off. If the failure comes again, change inverter.255InternalGrid disconnect - UgridAbsMeanHig anti-islanding events are logged L1Description: Anti Islanding event logged (better description needed)

End-user: Check event log for other grid events (1-55) and follow the instructions for these events. If the error persist call installer.

Installer: Replace the inverter.

Grid disconnect - UgridAbsMeanHighanti-islanding events are logged L1For occurrence |U| sum > 253 VFor clearance 2 sec256InternalGrid disconnect - UgridAbsMeanHigh anti-islanding events are logged L2see event 255257InternalGrid disconnect - UgridAbsMeanHigh anti-islanding events are logged L3see event 255258InternalUDCbus - overvoltageDescription: DC bus overvoltage

End-user: If problem persists call installer.

Installer: Check PV installation/layout.

DC-bus capacitors exceeds the maximum limit for the inverter. The inverter continues normal operation when the voltage level is lowered to a level within limitsFor occurrence > 1010For clearance < 1008259PV ISO internal calc. diff260PV Delta VEN too low261Booster transitor is shot circuited262Booster transitor is shot circuited1000InternalCommunication Board start upWhen AC and DC was shot off and power is back on the inverter the event 1000 is giving the notice that the COMBO is start up

It seems that the error 242 and 1000 is the ( AC Standby problem ) event is seen after Sundown on the inverter - Exchange inverter

This event could be a result of FI/HPFI trips. Check if the FI/HPFI relay is needed in the current installation.- If the internal RCMU is sufficient then the FI/HPFI should be removed.- If not, the customer have to continue turning the FI/HPFI relay on. DSI is planning to implement a SW that makes the inverter tolerant for the high capacity in the solar panels. When the SW is ready, DSI will contact the customer to plan the update of the inverter. Is the update free of charge?Exchange of the inverter will NOT solve the problem!

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Fault event DerateFault EventsOwner: TJAEvent IDAreaDescriptionAction300de-rateIgrid L1Cannot be displayed???

Derate - Igrid L1For occurrence >22AFor clearance ? 22AFor clearance ? 22AFor clearance ? 5000WFor clearance < 5000W304de-ratePgrid L2Cannot be displayed???

Derate Pgrid L2For occurrence > 5000WFor clearance < 5000W305de-ratePgrid L3Cannot be displayed???

Derate Pgrid L3For occurrence > 5000WFor clearance < 5000W306de-rateUgrid L1Cannot be displayed???



For occurrence VariableFor clearance Variable309de-rateIPV 1Cannot be displayed???



Derate IPV 3For occurrence > 12AFor clearance < 12A312de-ratePPV 1Cannot be displayed???



Derate PPV 1 For occurrence > 6000WFor clearance < 6000W315de-rateTpowerCannot be displayed???


Derate - TpowerFor occurrence > 85 CFor clearance < 85 C317De-rateTpowerCannot be displayed???


Derate - TpowerFor occurrence > 85 CFor clearance < 85 C319de-rateTPCBCannot be displayed???




Derate TPCBFor occurrence > 75 CFor clearance < 75 C

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Fault Events Fail safeFault EventsOwner: TJAEvent IDAreaDescriptionAction225Fail safeMemoryDescription: Failure in Memory/Eeprom control board


Installer: Replace inverter226Fail safeMemoryDescription: Failure in Memory/Eeprom comm board


Installer: Replace inverter227Fail safeMemoryDescription: Failure in Memory/Eeprom Aux board


Installer: Replace inverter228Fail safeMemoryEEPROM - PowerSee event 227229Fail safeMemoryFlash - CTRLSee event 227230Fail safeMemoryFlash - CommSee event 227231Fail safeMemoryFlash - FSPSee event 227232Fail safeMemoryDoes not exist!Flash - xxx233Fail safeMemoryDescription: Memory check failed - control boardEnd-user: Restart the inverter. If error persists call installerInstaller: Replace inverter234Fail safeMemoryRAM - Commsee event 233235Fail safeMemoryRAM - FSPsee event 233236Fail safeMemoryDoes not exist!RAM - xxx237Fail safeMemoryRAM - CTRLsee event 233238Fail safeMemoryRAM - Commsee event 233239Fail safeMemoryRAM - FSP see event 233240Fail safeMemoryDoes not exist!RAM - xxx241Fail safeCOMMDescription: No contact to sensor



It seems that the error 212(trafo and Gate driver problem ) can trigger the event 241259Fail safePV ISO internal calc. diffDescription: Internal parameter too lowEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter

Insulation test Difference - Active in SW 2,10260Fail safePV Delta VEN too lowDescription: Unable to change the voltage between ground and neutral during isolation test (by less than 10 V)End-user: Call Danfoss ServiceInstaller: Check the PV installation for isolation error. If ok, exchange the inverter.

- Active in SW 2,10261Fail safeBooster transistor is shot circuitedDescription: Short circuit boost transistorEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter

- Active in SW 2,10

Exchange262Fail safeBooster transistor is shot circuitedDescription: Short circuit boost transistor or wrong PV polarityEnd-user: Call Danfoss Service/installerInstaller: Check the PV installation for polarity errors. If ok, exchange the inverter.

- Active in SW 2,10350Fail safeRCMU self-test failed.Description: DC bias in RCMU too high during self testEnd-user: Call Danfoss Service/installerInstaller: Exchange the inverter.

For occurrence - RMS and mean above 25 mA (Value from plausibility test table)?a. Yes Go to fail safe and report Fail Safe (after three retries). Exchange inverter351Fail safeRCMU self-test failed.For occurrence - mean above 25 mA (Value from plausibility test table)?a. Yes Go to fail safe and report Fail Safe (after three retries).For clearance - Reset - if not Exchange inverter352Fail safeRCMU self-test failed.Description: RCMU cannot detect step (of 25 mA) in residual current End-user: Call Danfoss Service/installerInstaller: Exchange the inverter.

For occurrence increase in RMS value below 25 mA? a. Yes Go to fail safe and report Fail Safe (after three retries). For clearance

-Exchange inverter353Fail safe353-355 is pv side.Description: Short circuit inverter transistorEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter354Fail safe353-355 is pv side.Description: Short circuit inverter transistor (average)End-user: Call Danfoss ServiceInstaller: Exchange the inverter355Fail safe353-355 is pv side..356Fail safeTransistor & Relay test failed.Description: Test of inverter relay and voltage measurements cannot be performedEnd-user: Call Danfoss ServiceInstaller: Exchange the inverter357Fail safeTransistor & Relay test failed.Description: Inverter relay has failed (assumed welded)End-user: Call Danfoss ServiceInstaller: Exchange the inverter358Fail safeTransistor & Relay test failed.Description: Inverter relay has failed (assumed welded)End-user: Call Danfoss ServiceInstaller: Exchange the inverter359Fail safeTransistor & Relay test failed.Description: Inverter relay or transistor has failed (assumed open circuit)End-user: Call Danfoss ServiceInstaller: Exchange the inverter360Fail safeTransistor & Relay test failed.Description: Inverter relay or transistor has failed (assumed open circuit)End-user: Call Danfoss ServiceInstaller: Exchange the inverter361Fail safeTransistor & Relay test failed.software Bug - solution new SW Controlboard 1,18/1,19 ( SW 3.10 ) if SW 3.00 update the SW If SW Below 1.12 update SW (old Com Card )


Description of failure: HW: All SW: 2.01To be categorized as 8013: NEW Inverters must be produced between 2010 week 36 and before 2011 week 14. Refurbished Inverters could be produced without plugs on the Control-board after 2011 week 14. The Display has the following failure mechanisms: Dark and no backlight in the Display Burned component at the display print board.Be aware: Sometimes it is the exchange inverter with the old front that is returnedJPMFAT TLX UK - 03.03a 2012-03-20Disp. Loose connectionDescription of failure: HW: All - SW: All To be categorized as 8015, the Display must have the following failure mechanisms: Display background dark or with unreadable signs (Example, See picture 1) Display socket has loose connections (Example, See Picture 2). The Display must be produced before 2010 week 31.JPMFAT TLX UK - 03.03a 2012-03-20Event 361

Description of failure: HW: All SW:

fat ulx uk - 06 jpm 2012-05-22

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