LG LTN16385PL Service Manual page 36

3. Defrost Sensor Failure
No Checking Flow
1
Check if there is a loose connection on CON4.
2 Unplug the PCB connectors and test the resistance
between the wires "Orange and Orange" on CON4
as shown in the image.
3
Accessing to Freezer Compartment, remove the fan
and check the resistance points (Orange wires).
4
Check between "Orange and Orange" on CON4 as
shown in the image.
Result & SVC Action
Result
Connected
Loose
Result SVC Action
0? Short
Go to 3
OFF Open
Other Normal Check temperature and
resistance (Resistance
Table, page 54).
Go to 4
Result SVC Action
0? Short
Change harness sensor.
OFF Open
Other Correct Check temperature and
resistance (Resistance
Table, page 54).
Go to 4
Result SVC Action
0? Short
Replace the refrigerator.
Connect the PCB wires
OFF Open
and the control box, then
connect to refrigerator.
- 36 -
SVC Action
Go to 2
Connect firmly, and
try again.
Problem persists?
Yes: Go to step 2.
No: Explain to customer.