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Problems
Symptom
Wrong
Bad cooling
Refrigerator
e t
m
p
r e
t a
r u
. e
Causes
Defective Step Motor
Check Step Motor
Damper.
damper motor and
e r
e
d
s
w
c t i
h
a
wire are cut. Check
Step Motor damper
a p
. t r
Check Step Motor
damper Motor driving
r
l e
y a
n i
P
C
. B
Foreign materials in Step
Motor damper ba es.
Ice formation on
Step Motor damper
ba es.
Defective refrigerator
Defective refrigerator
sensor
sensor parts.
Refrigerator sensor is
substituted for other
sensor.
Defective refrigerator
sensor assembly
condition.
Check s
Check if Step Motor damper
motor and reed switch lead
n
d
l
a e
d
i w
e r
a
e r
c
t u
i w
h t
a
t
s e
e t
Refer to Step Motor damper
in parts repair guide.
Refer to Step Motor damper
in parts repair guide.
Check Step Motor damper
ba e visually.
Check if Step Motor damper
Heater wire is cut with a
tester.
Check the resistance of
refrigerator sensor with a tester. sensor.
Check the sensor color in the
circuit. (main PCB sensor
housing.)
Check if refrigerator sensor
is not xed at cover sensor but
inner case visually.
Measures
Reconnect lead
wire.
. r
Replace Step Motor
damper or refrigerator
o c
t n
o r
b l
x o
s A
e s
m
b
. y l
Replace relay or
Refer to single
PCB.
motor damper
d
v i r
in circuit
explanation.
Remove foreign
materials.
Replace Step Motor
damper or refrigerator
control Box Assembly.
Replace refrigerator
Refer to sensor
resistance
characteristic
table in circuit
explanation.
Repair main PCB
sensor housing.
Fix again the
refrigerator sensor.
Remarks
n i
g
c
c r i
u
s t i
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