Electrolux E30MH65GPSA, Technical & Service Manual

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Troubleshooting and Error Codes
3-2
1. Open or loose lead wire harness.
2. Open thermal cutout (Magnetron)
3. Open low voltage transformer.
4. Defective Assembly PCB.
1. Shorted lead wire harness
2. Defective primary latch switch (NOTE 1)
3. Defective monitor switch (NOTE1)
4. Shorted H.V. Capacitor
5. Shorted H.V. Transformer (NOTE2)
1. Key input is not in-Sequence
2. Open or loose connection of membrane
key pad to Ass’y PCB
3. Shorted or open membrane panel
4. Defective Ass’y PCB
1. Off-alignment of latch switches
2. Open or loose connection of high voltage
circuit especially magnetron filament circuit
NOTE: Large contact resistance will bring
lower magnetron filament voltage and
cause magnetron to lower output and/or
intermittent oscillation.
3. Defective high voltage components:
H.V. Transformer H.V. Capacitor
H.V. Diode, H.V. Fuse Magnetron
4. Open or loose wiring of power relay
5. Defective primary latch switch
6. Defective power relay or Ass’y PCB.
1. Misadjustment or loose wiring of primary
latch
switch
2. Defective primary latch switch.
Oven is dead.
Fuse is OK.
No display and no
operation at all.
No display and no
operation
at all. Fuse is blown.
Oven does not accept
key input (Program)
Timer starts count-
down but no
microwave oscillation.
(No heat while oven
lamp and fan motor
turn on.)
Oven lamp and fan
motor
turn on.
Check fan motor when thermal
cutout is defective. Check Assembly
PCB when low voltage transformer is
defective. See Section 4: Low Voltage
Transformer Testing
Check adjustment of primary, interlock
monitor, power relay, door sensing
switch. See Section 4: Main Relay and
Power Control Relay Testing, and Door
Sensing Switch/Primary Switch/ And
Monitor Switch Adjustment
Refer to operation procedure.
Replace PCB main.
See Section 4: P.C.B Assembly Removal
Adjust door and latch switches.
See Section 4: Door Sensing Switch/
Primary Switch/ And Monitor Switch
Adjustment
See Section 4: Magnetron Testing
See Section 4: High Voltage Transformer
Testing, Low Voltage Transformer Testing
See Section 4: High Voltage Capacitor
Testing
See Section 4: High Voltage Diode
Testing
Check high voltage component according
to component test procedure and replace
if it is defective.
Replace PCB main.
Adjust door and latch switches.
See Section 4: Door Sensing Switch/
Primary Switch/ And Monitor Switch
Adjustment
Symptom Cause Corrections
NOTE 1: All of these switches must be replaced at the same time.
(refer to adjustment instructions) Check continuity of power relay
contacts and if it has continuity, replace power relay also.
NOTE 2: When H.V. Transformer is replaced, check diode and magnetron also.