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Inlet Valve Assembly - LG WM3988H*A Service Manual

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9-5. INLET VALVE ASSEMBLY

Wiring
diagram
Depending on the cycle and water temperature, the controller will energize the hot or
Function
cold water valve solenoids to meet the selected water temperature.
Test
After pull out the connector of defective valve, check the resistance.
points
and
Result
Circuit in the MAIN PWB
IC
MICOM
Inlet valve driving circuit
Wiring Diagram
1
2
1
2
WH
BL
NA
1
2
1
2
DRY
MAIN
VALVE
WASH
* Each circuits of loads in wiring diagram are all same.
(1)
(1)
(2)
(2)
(1)
(1)
(1)
(1)
(2)
(2)
(2)
(2)
Vdc
Rg
Cg
PCB
CONNECTOR
MIAN PWB
BL3
3
4
NA
3
2
1
3
4
3
2
1
COMMON
YL
VI
(BK)
RD
BL
1
2
1
2
AG
PRE
VALVE
WASH
INLET VALVE
(2)
(2)
(1)
(1)
(2)
(2)
(1)
(1)
45
Rs
Vac
Cs
INLET
VALVE
WH
1
2
3
4
1
2
3
4
GYOR BL
BL
RD
1
2
1
2
HOT
BLEACH
VALVE
Test points
(1)-(2)
Result
0.8-1.2 kΩ

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