Read LG WM2550HRCA / WM2550HWCA Service Manual online
40
9-5. INLET VALVE ASSEMBLY
Wiring
diagram
diagram
Circuit in the MAIN PWB
INLET
VALVE
VALVE
Vac
Rs
Vdc
Cg
Rg
IC
MICOM
Cs
PCB
CONNECTOR
Inlet valve driving circuit
Function
Test
points
points
and
Result
Depending on the cycle and water temperature, the controller will energize the hot or cold
water valve solenoids to meet the selected water temperature.
water valve solenoids to meet the selected water temperature.
After pull out the connector of defective valve, check the resistance.
Test points
(1)-(2)
Result
0.8-1.2 k
Ω
Wiring Diagram
MAIN
WASH
AG
VALVE
PRE
WASH
BLEACH
HOT
VALVE
1
2
1
2
1
2
1
2
1
2
RD
BL
BL
RD
NA
WH
NA4
VT
GY YL
BL
NA2
BL3
4
3
2
1
1
2
3
1
2
3
4
3
2
1
4
3
2
1
4
3
2
1
COMMON
(BK)
(BK)
MIAN PWB
INLET VALVE
* Each circuits of loads in wiring diagram are all same.
(1)
(1)
(2)
(1)
(2)
(2)
(1)
(2)
(1)
(2)
(1)
(1)
(2)
(1)
(2)
(2)
(1)
(2)
(1)
(2)
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