LG LTCS20020 Series Service Manual page 36

2) Refrigerator Sensor Error
No
1
Check for loose connection in CON8.
2
1.- Unplug connector from CON8.
2.- Check resistance in wires White to
White.
COLD
Checking Flow
COLDEST
Result & SVC Action
Result
Firmly plugged
Loose
Result
Short
0
Open
Normal
<Temperature table-1>
(1) To (2)
23°F
32°F °C
41°F °C
50°F
59°F
The sensor is determined by
the temperature.
For example, 30
36
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SVC Action
Go to step 2
Plug firmly, then check again.
Problem persist?
YES: Go to step 2.
NO: Explain to customer.
SVC Action
Change the sensor
Check the resistance of
the sensor wires back to
the main PCB.
if they are open between
the main PCB and
connector it will be
necessary to replace the
refrigerator
Check the Temp and
resistance (Table-1)
Result
°C 38
30
24
°C 19.5
°C 16
indicates 32°F.