LG LFC20760 Series, Service Manual

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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 defect is repaired the defect code is removed and refrigerator returns to normal operation (RESET)
4. The defect CODE is shown on the Display.
Defect code signs Defect code signs
1
2
ERROR CODE on display panel
NO ITEM
ERROR CODE
CONTENTS REMARKS
1
2
3
4
5
Failure of freezer
sensor
Failure of
Refrigerator sensor
Failure of defrost
sensor
Poor of defrost
(LED check mode)
RT-sensor error
Cut or short circuit wire
Cut or short circuit wire
Cut or short circuit wire
Inspect Connecting
wires on each sensor
Snapping of defrost
heater or Temperature
fuse, pull-out of
Connector (indicated
minimum 1 Hours
after failure occurs)
All off
All off
All off
All off
All off
LED OFF LED ON
1 hours later after
Open or short circuit
Visible in LED CHECK MODE
starting defrost, If
sensor doesn’t be
over 46ºF (8ºC)
5
Failure of BLDC fan
motor at freezing
compartment
DISPLAY CHECK MODE: Press at the same time ADJUST REFRIGERATOR TEMP & ADJUST FREZEER TEMP
For more than 1 second. This Mode is for LED inspection and ALL LED will turn ON at this time,
If releasing the buttons, the display will indicate the previous Status
If there is an RT sensor defect it will be indicated in this mode.
All off
Poor motor, hocking to
wires of fan, contact of
structures to fan,
snapping or short of lead
If there is no fan motor
signal for more than
115sec in operation.
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