Amana RFS12SW2C Service Manual page 27

(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.
NOTE: Simple test of power output-conducted by heating one liter water for one min. if available.
Minimum 8.5°C temperature rise is normal condition.
CHECK
Check continuity
of secondary
switch (with
door closed).
Check the con-
nection between
CN1 connector
and PCB
assembly.
Check blower
motor.
Check oven lamp.
CHECK
Check the
power source
voltage.
Disconnect the
wire leads from
relay 3, 5 or relay
4, 6 and check
on and off time
with multitester.
Measure the
output power.
RESULT
Defective
No continuity.
secondary switch.
Continuity.
Continuity
No continuity
Abnormal.
Abnormal.
Normal.
RESULT
Lower than 90% of
rating voltage.
Normal.
Abnormal.
Normal.
Abnormal.
5-14
CAUSE
Replace
secondary switch.
Defective PCB Replace PCB
assembly.
assembly.
Loose connection.
Defective blower
motor.
Defective oven lamp.
CAUSE
Suggest customer
Decrease in power
contact local
source voltage
electric power
with load.
utility co. or
qualified
electrician.
Defective PCB Replace PCB
assembly. assembly.
Defective
magnetron.
REMEDY
Connect them
tightly.
Replace blower
motor.
Replace oven lamp.
REMEDY
Replace
magnetron.