Rt Sensor Error - LG LTCS24223B /04 Service Manual

1) RT Sensor Error

No
1 Check for loose connection in CON8.
2 1.- Unplug connector from CON8.
2.- Check resistance in wires Brown to
Brown.
3.- Plug in CON8, check voltage in wires
Brown to Brown, and check voltage and
temperature result in Table-3)
COLD
C h e c k n i g f o l w
COLDEST
R e s
Result
Firmly plugged
Loose
Result
Short
0
Infinte
Open
ohms
Other Normal
<Temperature table-3>
TEMP
-39°F (-40°C)
-30°F (-35°C)
-21°F (-30°C)
-13°F (-25°C)
-4°F (-20°C)
5°F (-15°C)
14°F (-10°C)
23°F (-5°C)
32°F (0°C)
41°F (+5°C)
50°F (+10°C)
59°F (+15°C)
68°F (+20°C)
77°F (+25°C)
86°F (+30°C)
95°F (+35°C)
104°F (+40°C)
- 40 -
u t l & S V C A t c o i n
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-3)
VOLTAGE
RESISTANCE
4.48 V
225.1
4.33 V
169.8
4.641 V
129.3
4.54 V
99.30
4.425 V
76.96
4.287 V
60.13
47.34 4.128 V
3.948 V
37.55
3.75 V
30
24.13 3.535 V
3.307 V
19.53
15.91 3.070V
13.03 2.829 V
10.74 2.589 V
8.89 2.354 V
7.40
2.128V
6.20 1.914 V