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Self Diagnostics – During Normal Operation Table
LED
Item
Trouble Contents
Diagnostic Method
R-1-
Icemaker Sensor Error Display error: separation of
sensor housing part, contact error,
disconnection, short circuit
Display error of detecting temperature
of sensor: more than 149°F (+65°C) or
less than -58°F (-50°C)
When checking the voltage of
MAIN PCB CN90 #3 to CN90 #4:
should be between 4.5 to 1.0V.
R-1-
Refrigerator Sensor
Error
When checking the voltage of
MAIN PCB CN30 #6 to CN75 #1:
should be between 4.5 to 1.0V.
R-1-
Refrigerator Defrost
Sensor Error
When checking the voltage of
MAIN PCB CN #7 to CN75 #1:
should be between 4.5V to 1.0V.
R-1-
Refrigerator Fan Error Display error during operation of fan
motor: feed back signal line contact
error, separation of motor wire, motor
error
Voltage of MAIN PCB CN75
orange to gray should be
between 7v to 12V.
R-1-
Icemaker Error
Display error: ice making kit is
harvested more than 3 times and level
error. Note: Apply to the applicable
icemaker model.
After replacing icemaker, check
the operation by turning the
appliance ON again.
R-1-
Refrigerator Defrost
Error
Display error: separation of fresh food
compartment defrost heater housing
part, contact error, disconnection,
short circuit or temperature fuse error
Display error: the fresh food
compartment defrosting does not
fi
nish. Defrost is heating continuously
for more than 80 minutes.
After separating MAIN PCB
CN70, CN71, from PCB, check
the resistance value between
CN70 white to CN71 orange.
It should be 102 ohms ±7%.
(Resistance value is varied by
the input power.) Check 0 ohm:
heater short,
∞
ohm: wire/
bimetal open.
F-1-
Ambient Sensor Error
Display error: sensor housing
separation, contact error,
disconnection, short circuit
Display error by detecting
temperature of sensor: more than
149°F (+65°C) or less than -58°F (-50°C)
Check the voltage of MAIN PCB
CN32 #1 to #4. It should be
between 4.5V to 1.0V.
F-1-
Freezer Sensor Error
Check the voltage of MAIN PCB
CN30 #3 to CN75 #1. It should
be between 4.5V to 1.0V.
F-1-
Defrost Sensor Error
Check the voltage of MAIN PCB
CN30 #4 to CN75 #1. It should
be between 4.5V to 1.0V.
F-1-
Freezer Fan Error
Display error during operation of fan
motor: feed back signal line contact
error, motor wire separation, motor
error
Voltage of MAIN PCB CN75
yellow to gray should be
between 7V to 12V.
F-1-
Condenser Fan Error
Display error during operation of fan
motor: feed back signal line contact
error, motor wire separation, motor
error
Voltage of MAIN PCB CN75 sky
blue to gray should be between
7V to 12V.
a
b
c
d
e
g
a
b
c
d
e
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