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6. Troubleshooting
4000 VOLTS EXIST AT THE HIGH VOLTAGE AREA. DO NOT OPERATE THE OVEN WITH CABINET PARTS REMOVED. DO NOT
REMOVE THE CABINET PARTS IF THE POWER SUPPLY CORD IS PLUGGED IN THE WALL OUTLET. UNPLUG THE POWER CORD
BEFORE SERVICING.
6-1 Electrical Malfunction
Parts
Fuse blows
out when
door is
opened.
Fuse is
open.
Oven lamp
does not
light.
Fan does
not operate.
NOTE: Interlock monitor switch must be replaced when the fuse is blown out.
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WARNING FOR HIGH VOLTAGE
Cause
Defective primary
Check continuity of the primary switch terminals with
interlock switch
wire removed using a multimeter. If there is continuity
ary winding.
between switch terminals when door is opened,
the switch is defective.
Defective interlock
Check continuity of the monitor switch terminals
monitor switch
with wire removed by using a multimeter.
If there is continuity between switch terminals
when the door is closed, the switch is defective.
Layer short of the
The fuse will not blow right away, but if it blows in a
secondary coil of
few seconds, then there is a layer short.
H. V. Transformer
If the fuse blows with H. V. Trans secondary open, the
transformer may be faulty.
1) Fuse blown out
Check fuse.
2) Poor contact of
Check continuity of power supply cord. Also check
power cord
whether the power cord is securely wired.
3) Defective lamp
The fan motor rotates, but lamp does not light.
4) Defective timer
Check the terminals of timer for continuity,
contacts
turning the timer knob ON and OFF repeatedly.
5) Thermal cutout
In this case the oven lamp and fan do not
S/W open
turn on
1) Defective
If 220~230V is found at motor terminals, the motor
fan motor.
should be replaced.
2) Defective con-
The oven lamp does not light and fan motor
tacts of timer
does not operate.
manuals search engine
Diagnosis
Remedy
Replace the primary
interlock switch
Replace the interlock
monitor switch
Replace H. V. Transformer
Replace the fuse.
Adjust or replace the
power supply cord.
Replace the lamp.
Replace the timer.
Replace the
thermal cutout S/W
Replace the motor.
Replace the timer.
6-1
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