LG LFC23760ST/03 Service Manual page 34

8-1-9 Defect Diagnosis Function
1. Automatic diagnosis makes servicing the refrigerator easy.
2. When a defect occurs, the buttons will not operate; but the tones. such as ding. will sound.
3. When the defect CODE removes the sign, it returns to normal operation (RESET).
4. The defect CODE shows on the Refrigerator and Freezer Display.
REFRIGERATOR TEMP
WARMER
ADJUST
ERROR CODE on display panel
No. ITEM
Failure of Freezer
1
Sensor
Failure of Refrigerator
2
Sensor
Failure of Defrost
3
Sensor
4
RT- sensor error
Failure of Defrost
5
Mode
Failure of BLDC fan
6 motor at freezing
compartment
Failure of Icemaker
7
Sensor
8
Failure of Icemaker Kit
Primary Error: F sensor, R1 sensor, D sensor, Defrost errors, F-FAN errors.
Secondary Error: I / M sensors, I / M Kit, RT sensor.
When an error occur the first 3 hours the Primary Error and Secondary Error is indicated in the display check mode (Pressing
refrigerator and freezer temperature control button at the same time more than one second). After the 3 hours and if the error
is still present the Primary Error will show in the display automatically (See Note 1) and the Secondary Error is indicated in the
display check mode.
Note1: In the Primary Error after 3 hours of the error occurs all display lights turn OFF except the Freezer Temperature
(Trouble Code Index) indicating the failure mode.
*LED check function: When there's no error, when the refrigerator temperature control and the freezer temperature control
button at the same time are hold for 1 second or longer, every LED on the display turns on at the same time when the button
are released, the previous mode is restored.
COLDER
4 IS RECOMMENDED
LED OFF LED ON
ERROR INDICATION
All Off
All Off
All Off
All Off
All Off
All Off
All Off
All Off
FREEZER TEMP
WARMER 4 IS RECOMMENDED
CONTENTS
Cut or short circuite wire
Cut or short circuite wire
Cut or short circuite wire
Cut or short circuite wire
When defrost sensor does
not reach 8°C within 1 hour
after starting defrost
If there is no fan motor
signal for more than 115s in
operation fan motor
Snapping or short circuit of
ice making sensor.
Failure of wires such as
motor in I/M KIT, GEAR,
HALL IC.
- 32 -
COLDER
ADJUST
REMARKS
Inspect Connecting
Wires on each sensor
Snapping of defrost
heater or temperature
fuse, pullout of
connector (indicated
minimum 2h after
failure occurs)
Poor motor, hooking to
wires of fan, contact of
structures to fan,
snapping or short
circuit of Lead wires.
Connecting Wire Test
On Sensor
When the ice ejecting
does not operated on
pressing the I/M TEST
S/W