LG LFX28992 Series Service Manual page 50

11-4 Door Switch
Function The switch senses if the door is open or closed.
- When the door open, lamp on.
- When the door open, the switch give information to Micom.
When the door open, internal contact operate on and off moving plunger of door switch up
and down.
How to
Measure
Beep
Check the resistance between connectors 1, 2 and 3, 4 .It means
check whether or not applying an electric current. If there is
resistance, the switch is good.
Standard
<Switch, Freezer>
1
2 3 4
3 4
Multimeter beep – Switch F,R
Nomal Push the button(Plunger)
Beep or 0
<Switch, Refrigerator>
Button
(Plunger)
1
Beep
None (
- 50 -
2 3 4
2 1