LG F12A9TDP3S Service Manual ▷ View online
14
6. WIRING DIAGRAM / PCB LAYOUT / PROGRAM CHART
BL
BL
BL
BL
YL
YL
YL
VL
OR
L
Y
L
Y
/
RD
YL
BL
/
RD
BL
/
WH
BL
/ WH
BL
/ WH
BL
BL
BL
BL
BL
GN
/YL
GN
/YL
GN
/YL
BL
SBL
VL
OR
BL
/
WH
BL
/ WH
BL
/ WH
SBL
BN
/ YL
BN
BN
BL
BN
YL
BK
RD
NA
NA
NA
NA
NA
WH
W
H
WH
WH
WH
RD
RD
RED
D
R
D
R
BK
B
K
BK
B
K
BK
BK
K
B
H
W
WH
/ BK
WH
/ BK
GY
/
WH
GY
/
WH
GY
RD
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
1
2
1
2
1
2
1
2
3
4
5
6
1
1
1
1
1
2
2
2
6
3
1
4
5
2
6
3
1
4
1
2
1
2
1
2
2
1
1 1
2
2 2
3
(S
)
(G
)
(S)
3
1
2
1
2
1
2
3
1
2
3
2
2 2
1
1
1
3
2
3
2
1
5
4
2
3
3
1
5
4
2
3
3
GND
Ha
Hb
1
3
2
2
1
3
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
3
1
2
3
1
1 1
2
3
1
2
3
1
NOISE FI
LTER
P
O
WER CORD
W
ASHIG HE
ATER
DRAIN PUMP
DOOR LOCK S/W
INLET
V
A
LVE
INLET
V
A
LVE
THERMIS
TOR
PRESSURE SENSOR
THERMIS
TOR
PRESSURE SENSOR
Motor
H O T
W
V
U
P R E
M A I N
P
R
E
M
A
I
N
3
4
4
5
2
2
2
3
3
3
3
3
4
4
5
4
5
6
5
6
6
Wiring Diagram
[Note]
RD : Red
RD : Red
YL : Yellow
BL : Blue
WH : White
GY : Gray
BK : Black
VL : Violet
OR : Orange
SBL : Sky Blue
NA : Natural
5
4
3
2
7-5. TROUBLESHOOTING WITH ERROR
Water Inlet Error (IE)
Is the water tap closed ?
[Note] Environmental safety check list
1. No water tap leakage & freeze.
2. No entanglement of water supply hose.
.
e
g
a
k
a
e
l
e
s
o
h
y
l
p
p
u
s
r
e
t
a
w
o
N
.
4
.
e
g
a
tr
o
h
s
r
e
t
a
w
o
N
.
3
5. No the inlet filter clogged.
5. No the inlet filter clogged.
Check the
Water tap
and open it fully .
When there is water in the tub,
is the water level frequency
over 25.5KHz ?
is the water level frequency
over 25.5KHz ?
Reconnect or repair the
Connector
.
Or replace the
Harness
.
Replace the
Inlet Valve
.
Is the
Connector
connected correctly to
the
Main PCB
and the
Inlet Valve
?
Or is the
Harness
alright ?
Check the
Air Chamber
and
the Tube
(clogged)
And When you check the water level frequency again,
if it is over 25.5KHz, you replace
if it is over 25.5KHz, you replace
the Pressure switch.
YES
YES
NO
NO
Replace the
Main PCB
.
NO
YES
YES
NO
NO
Is the each resistance of Inlet Valve within
3.5 ~4.5 kΩ ?
3.5 ~4.5 kΩ ?
When the washing machine is started,
is operated the inlet valve?
is operated the inlet valve?
Pre. Valve
Main Valve
19
1
2
1
2
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