Component Testing Information; Defrost Controller Assembly Testing - LG LFXS24623S Service Manual

11. COMPONENT TESTING INFORMATION

11-1 Defrost Controller Assembly
Function The controller assembly is made up of two different kinds of parts. The fuse and the sensor.
To determine if these parts are defective, check for resistance. The fuse will cut power to the
defrost heater at very high temperatures.
How to
Measure
(Fuse-M)
How to
Measure
(Sensor)
Standard
(1) to (2)
(1) to (2)
Fuse-M (at all temperature)
Test Point Result
(1) to (2) 0 ~ 0.1
Set a ohmmeter to the 2 housing pin.
Measure the 2 pin connected to Fuse-M.
If the ohmmeter indicate below 0.1ohm
fuse-m is a good condition, But if infinite the
part is bad.
Set a ohmmeter to The 2housing pin.
Measure the 2 pin connected to Sensor.
If the ohmmeter indicate 11kΩ(at room
temperature) Sensor is good.
When check the ohm at other temperatures
Check the sensor manual.
Sensor (at room temperature)
Test Point Temperature
-3.0 ºC / 26.6 ºF
0.0 ºC / 32.2 ºF
5.0 ºC / 41.0 ºF
10.0 ºC / 50.0 ºF
(1) to (2)
15.0 ºC / 59.0 ºF
20.0 ºC / 68.0 ºF
25.0 ºC / 77.0 ºF
30.0 ºC / 86.0 ºF
Resistance (kΩ)
34.30
30.00
24.13
19.53
15.91
12.78
10.74
8.90