Panasonic NN­GS595A - 7 TROUBLESHOOTING GUIDE; Self-Diagnostic Display Codes; 7.1 Oven Stops During Cooking

10/24/2016 XMLServiceManual
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7TROUBLESHOOTINGGUIDE
DANGERHIGHVOLTAGES
1.
DONOTREADJUSTPRESETCONTROLontheH.V.Inverter(U).Itisverydangeroustorepairoradjustwithoutpropertest
equipment because this circuit handles very large current and high voltage. Operating a misaligned inverter circuit is
dangerous.
2. Ensurepropergroundingbeforecheckingfortrouble.
3. Becarefulofthehighvoltagecircuitry,takingnecessaryprecautionswhentroubleshooting.
4. DischargehighvoltageremainingintheH.V.Inverter(U).
5.
Whencheckingthecontinuityof theswitchesorthe H.V.Inverter, disconnectone leadwirefrom these partsandthencheck
continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter. When
disconnecting a plastic connector from a terminal, you must hold the plastic connector instead of the lead wire and then
disconnectit,otherwiseleadwiremaybedamagedortheconnectorcannotberemoved.
6.
Donottouchanypartsofthecircuitryonthedigitalprogrammercircuit,sincestaticelectricdischargemaydamagethiscontrol
panel.Alwaystouchyourselftogroundwhileworkingonthispaneltodischargeanystaticchargeinyourbody.
7.
220/240VACispresentonthedigitalprogrammercircuit(Terminalsofpowerrelay’sandprimarycircuitofDigitalProgrammer
Circuit).Whentroubleshooting,becautiousofpossibleelectricalshockhazard.
Beforetroubleshooting,operatethemicrowaveovenfollowingthecorrectoperatingproceduresintheinstructionmanualinorder
tofindtheexactcauseofanytrouble,sinceoperatorerrormaybemistakenfortheoven’smalfunction.
Selfdiagnosticdisplay
Ovenhasselfdiagnosticfunctionbutitwillnotbeactivatedinnormaloperationmode.
Toshowselfdiagnosticresult,pleasetakethefollowingsteps.
1.Firstly,youmustprogramtheDPCintoTESTMODE(Pluginoven→pressTimer/Clockpadtwice→pressStartpad
once→pressMicroPowerpadonce.)
2.KeeppressingSteamShotpadformorethan2secondsuntilbuzzerbeeps.
3.PressStartpadtwice,ovenwillshowerrorcode.
NOTE:
1.Ifanyerrorwasobserved,itwillbekeptinmemoryupto3errorsinthepast.Iftherearemorethan4cases,
thememorywillrenewthelastest3errorscodes.
2.PressStartpadagain,onemoreoldererrorcodewillbedisplayed.
3.Iftheovenisok,itwillshow“000”andblinking.
4.Errorcodlist
H** Hardwareproblem,ovenitselfhasproblem.
U** Usageproblemsuchasrunoutofwaterandovenitselfworkswell.
Errorcode Causeforerror
H99 Inverteron/offcontrolerror
H98 Magnetronnooscillationerror
H97 Inverterinputerror
H96 InvertercustomICerror
H95 Inverterinputfailure
H90 PowerdowncontrolledbyInverterthermistor
H68 IRsensorfailure
H61 IRthermistoropen/short
H60 IRsensorerror
H44 Keyboardswitchfailure
H39 Steamheaterthermistorfailure
H32 Magnetronthermistorfailure
H30 Oventhermistorfailure