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Troubleshooting Procedures
Trouble 3:
Display shows all figures set, but oven does not start cooking while desired
program times are set and START pad is touched.
CONDITION
1.Setting time
does not count
down when
touching START
pad.
2. Blower motor
or oven lamp
do not turn on.
Trouble 4: Oven seems to be operating but little heat is produced in oven load.
CONDITION
Output is low.
12
CHECK
Check continuity
No continuity.
of secondary
switch (with
door closed).
Continuity.
Check the con-
Continuity
nection between
CN1 connector
and PCB
No continuity
assembly.
Check blower
Abnormal.
motor.
Check oven lamp.
Abnormal.
Normal.
CHECK
Lower than 90% of
Check the
rating voltage.
power source
voltage.
Normal.
Measure the
Abnormal.
output power.
16400007 Rev. 0
RESULT
CAUSE
Defective
secondary switch.
Defective PCB
assembly.
Loose connection.
Defective blower
motor.
Defective oven lamp.
RESULT
Decrease in power
source voltage
with load.
Defective
magnetron.
REMEDY
Replace
secondary switch.
Replace PCB
assembly.
Connect them
tightly.
Replace blower
motor.
Replace oven lamp.
CAUSE
REMEDY
Suggest customer
contact local
electric power
utility co. or
quali ed
electrician.
Replace
magnetron.
©2010 ACP, Inc.
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