Panasonic NN­GS595A - 7.2 Other Common Troubles

10/24/2016 XMLServiceManual
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H02 MemoryICerror(Itisabletoshowupbothintestmodeandcookingmode)
H00 RAMfailure(Itisabletoshowupbothintestmodeandcookingmode)
H20 Steamheateropenerror
Usageproblem
U14 Nowaterduringsteamcooking(Itisabletoshowupbothintestmodeandcookingmode)
U40 Noloadoperation
U65 Powerdowncontrolledbymagnetronthermistor
HOT Ovenishot(Itisabletoshowupbothintestmodeandcookingmode)
7.1(Trouble)Ovenstopsoperationduringcooking
SYMPTOM CAUSE CORRECTIONS
SYMPTOM CAUSE CORRECTIONS
1.
Oven stops in 3 seconds after
pressingstartpad.
No input AC is supplied to H.V.Inverter (U) CN702
terminals
1.LatchSwitch
2.PowerrelayRY1
3. Loose lead wire connector
CN701,CN702
Oven stops in 23 seconds after
pressingstartpad.
H.V.Inverter (U) operates by the control signals from
DPCbutmagnetronisnotoscillating
1.Magnetron
2. Loose lead wire connector
CN703
Ovenstopsin1minuteafterpressing
startpad.(Ovencooking)
Oventhermistorcircuitisnotfunctions.
1.Oventhermistor
2.Loosewiring
Oven stops in 30 seconds after
pressingstartpad.(Steamcooking)
Steamheaterthermistorcircuitisnotfunctions.
1.Steamheaterthermistor
2.Loosewiring
3. bad conductibility between
thermistorandsteamheater
2.
Nodisplayandnooperationatall.
Fuseisblown.
Mostprobablylooseconnectionofconnectors,ordoor
latchmechanismisnotadjustedproperly
1. Align door, Door Latch
Switches
2.Loosewiringconnectors
7.2(Trouble)Othertroubles
SYMPTOM CAUSE CORRECTIONS
SYMPTOM CAUSE CORRECTIONS
1.
Ovenisdead.
FuseisOK.
Nodisplayandnooperationat
all.
1. Openorlooseleadwireharness
Checkfanmotorifthermalcutoutis
defective.
2. Openthermalcutout
3. Openlowvoltagetransformer
4. DefectiveDPC
1. Shortedleadwireharness