LG LFX28978 series Service Manual page 36

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