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LG TurboWash WM3070H A Series Manual page 231

Front load washing machine

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DISPLAY PWB
Power Button
N.C.
C
NC
1
2
3
4
5
6
7
8
9
BL
BK RD YL
3
3 2
1
2
3
WH
1
2
3
BL
BK RD
YL
RD1
1
2
3
4
1
2
3
4
REGULATED POWER SUPPLY TEST Step 1:
* Disconnect & Reconnect Washer to Power /
120 V
BK to RD / RD LED OFF
AC
* Press POWER Button / 0 V
BK to RD / RD LED ON!
AC
Note: Ohm check POWER Button Switch from BK to
YL / Switch is Normally Closed / Press Button & Switch
OPENS!
NA3
RD4
1
2
3
4
5
6
2
1
2
3
4
5
6
2
BL
2
2
1
WH
1
U
V W
WH
1
2
1
2
WASH
THERMISTOR
.5 to 4.5 V
DC
Ohms Test
3 Φ Motor Ohm Tests
50KΩ to 60KΩ @ Room
5 to 15 Ohms
Temperature
WH to BL – WASH
Function Test while operating;
Press Delay Wash & Soil Level = Water Level (255 Empty-213 Flood Level)
Press Delay Wash & Spin Speed = Motor RPM
Press Delay Wash & Wash Temp.= Temp. Celsius
10
11
OR
2
1
1
BL
V
MAIN PWB
NA1
BL1
3
3
4
3
2
1
6
5
4
1
4
3
2
1
6
4
1
3
5
3
2
3
1
4
WH
1
3
2
3
1
4
1
3
2
3
1
2
3
4
5
WH
2
3
1
2
3
4
5
1
2
3
NA
1
2
3
Hall Sensor
3 Φ MOTOR
Hall Sensor Testing NA CON
WH to GY 10 to 15 V
PRESSURE
DC
1 to 2
SENSOR
Ohm Test
1 to 3
8KΩ to 10KΩ
PS Voltage Tests
2 to 3
WH to RD
2.5 to 3.0 V
DC
WH to BL
WH to V
WH to SB
Frequency 26 KH
to 23 KH
Z
Ohm Check
20Ω to 25Ω
V to SB
NOTES
Press & Hold SPIN SPEED & SOIL LEVEL
Press POWER
Press START / PAUSE to cycle thru tests
Voltage Tests with connectors installed
Ohm Tests with connectors removed
BK – Black
OR – Orange
V – Violet
WM3070H*A Wiring Diagram
DISPLAY PWB
7
6
5
4
3
2
OR
BR
GN
PK
RD
YL
GN
8
7
6
5
4
3
2
8
7
6
5
4
3
2
OR
BR
YL
V
PK
RD
BL
9
8
7
6
5
4
3
2
9
8
7
6
5
4
3
2
Door
(N)
Monitor
Circuit
Triacs (L1)
2
3
1
1
2
3
4
2
1
2
1
1
2
3
4
2
3
1
BL3
NA4
BK (N)
BK (N)
1
2
1
2
1
2
1
2
BLEAC
MAIN
H
120 V
INLET VALVES
AC
800Ω to 1200Ω
BL (N)
Z
SB
BN
Test Mode
Component Tests
DRAIN
PUMP
Pump Motors 120 V
Drain Motor BK to BN 13Ω to 17Ω
Pump Motor SB to BK 25Ω to 30Ω
Wiring Color Legend
BL – Blue
BN – Brown
GN – Green
PK – Pink
RD – Red
SB – Sky Blue
YL – Yellow
1
REGULATED POWER SUPPLY TEST Step 2:
BK
1
With RED LED ON / CK the following Voltages
1
WH
RD to OR – 12 V
DC
RD to YL – 5 V
BK
DC
1
1 CON 4-1
(L1)
1
2
3
4
4
1
2
3
NA2
BK (N)
1
2
1
2
1
2
1
2
HOT
PRE
VALVE
WASH
OR (L1)
BL (N)
BK (N)
BK (N)
4
3
2
1
WH
2
3
4
5
1
2
3
1
2
3
BK
BK
SB
SOLE
NOID
CIRCULATION PUMP
DOOR LOCK SWITCH
*Door Lock Solenoid 120 V
AC
AC
Ohms Test
(4) OR to (3) BL by Pulse
Ohm Check OR to BL 700Ω to 1500Ω
*Door Switch Makes / Breaks Neutral
Side of Line (2) Rd to (1) BK
GY – Gray
WH – White
(N)
Relays
(L1)
BK
YL
X134
X71
2
1
2
1
2
2
1
1
WASH
HTR
14.4Ω
1000 W
GN
@120
/
VAC
YL
GN / YL
BL (L1)
BN (N)
RD
1 2 3
1
2
3
NOISE
RD (N)
FILTER
1 2 3
1
2
3
WH
GN
BK
WH
(L1)
(N)
POWER
CORD
120 V
/ 60 H
AC
Z

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