WHIRLPOOL ELECTRICAL APPLIANCES CO. LTD.
SERVICE MANUAL
Ref : 56258291a
PAGE 9 OF 17
3.
If leakage is found worst around the door perimeter, adjust the interlock support or
change the door.
6.3
QUICK SERVICE REFERENCES
PROBLEM
POINTS TO CHECK
Cavity lamp does not light, but other
electrical components (e.g. turntable)
are working.
1.
Lamp burnt.
2.
Bad contact between lamp and lamp
socket.
Cavity lamp does not light, all other
electrical components also do not work.
1.
Power plug not in good connection with the
socket. No power supply.
2.
Fuse blown.
3.
Bad contact between fuse and fuse
holder/clip.
4.
Loose door hinge, door poorly adjusted,
interlock poorly adjusted; causing fuse to
be blown.
5.
Short circuit within electrical circuit.
Lamp filament short, HV transformer short,
all causing fuse blown.
6.
Bad contact in contacts or terminals of
power relay, primary and secondary
interlock switch.
7.
HV diode break down.
Oven seems working, food is not
cooked.
1.
Defective
magnetron(filament
broken,
filament short to ground etc.).
2.
Ground wire of HV transformer broken.
3.
Filament wire short to ground.
4.
Filament wire broken.
5.
Bad contact in magnetron terminals.
6.
Defective control boards.
7.
HV diode break down, giving a hum noise.
Oven cooks for a short while and stop.
1.
Cooling fan jammed.
2.
Cooling fan motor open circuit..
Turntable does not turn.
1.
Defective turntable motor.
2.
Turntable shaft deformed.
User circuit breaker activates.
1.
High leakage in electrical components
(mostly motor).