LG LFX28978 Series - Replacing the Water Filter

- 36 -
9-3 Water mode doesn’t work
No
1
2
Checking flow
Check the loose connection.
Check the Purple to White.
(While pushing the lever S/W)
Result & SVC Action
3 Check the Blue to Gray.
(While pushing the lever S/W)
4 Check the resistance value.
<Pilot Valve>
Machine Room
<Water Valve>
In door
Pushing
Not
pushing
112 ~ 115 V
Other
0 ~2 V
Other
Go to the 3
Change PCB
Go to the 3
Change PCB
Lever s/w Result SVC Action
Pushing
Not
pushing
112 ~ 115 V
Other
0 ~2 V
Other
Go to the 4
Change PCB
Go to the 4
Change PCB
Lever s/w Result SVC Action
(1) to (2)
(3) to (4)
360 ~ 420
Other
360 ~ 420
Other
It’s normal
Replace
Water Valve
It’s normal
Replace
Water Valve
Point Result SVC Action
(1) (2) (3) (4)
Ice MakerDispenser
<CON2>
<CON3>