Troubleshooting and Testing
3-2
Home fuse blows when power cord is plugged
Monitor fuse blows when power cord is plugged
88:88 does not appear in display when power cord is first
plugged into wall receptacle.
Display does not operate properly when STOP/CLEAR
(The time of day should appear on display with beep sound.)
Oven lamp does not light with door opened.
Oven lamp does not light in cook cycle.
Cooking cycle runs 1 minute then shuts down.
Oven lamp light, but turntable motor does not operate.
Turntable motor operates normally but cooling fan
motor does not operate.
Oven does not go into a cook cycle, when
Low or no power is produced during microwave cooking
(The food is heated incompletely or not heated at all)
Extremely uneven heating is produced in oven load (food).
Function of variable cooking does not operate properly
except HIGH power.
Function of DEFROST does not operate properly.
Oven does not go into cook cycle when
Heating elements do not heat.
Temperature in oven cavity is lower or higher than preset.
Convection cycle runs for 10 minutes then shuts down.
Convection motor does not operate of all or properly.
A Magnetron
B Power Transformer
C H.V. Rectifier Assembly
D High Voltage Capacitor
E Secondary Interlock Switch
F Primary Interlock System
G Monitor Switch
H Monitor Fuse
J Magnetron Temperature Fuse
K Thermal Cut-out (Top)
M Top Heating Element
O Thermistor
P Damper Motor
Q Damper Switch
U Touch Control Panel
V Contact Switch
W Relay Ry-1
W Relay Ry-2
W Relay Ry-3
W Relay Ry-4
W Relay Ry-5
W Relay Ry-6
Y Defrost
Z Fuse1 On Pwb.
X Solid-state Relay (Top)
X Solid-state Relay (Side)
Replace Oven Lamp
Replace Fan Motor (Magnetron)
Replace Turntable Motor
S Convection Motor
Check Loose Wiring
Check Shorted In Power Cord
Check No Power At Outlet
Check Low Voltage
L Thermal Cut Out (Side)
N Side Heating Element
Replace
Fan Motor (Power Transformer)
U LV Transformer
I Fuse F10a
R Convection Motor Capacitor
Possible Cause
And
Defective Parts
Test Procedure
CONDITION
COOKING CONDITION (MICROWAVE)
(CONVECTION, SPEED BAKE/
GRILL/ROAST)
OFF CONDITION
Problem
(It light when door is opened).
pad is touched.
into wall receptacle.
into wall receptacle
START pad is touched.
START pad is touched.
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