3828ER3035Q LG Frnt Load Washer 3431 3434

2013-04-09

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Website: http://www.LGEservice.com [For U.S.A]
www.lg.ca [For CANADA]
E-mail: http://www.LGEservice.com/techsup.html

WASHING MACHINE
SERVICE MANUAL
!

CAUTION

READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.

MODEL: WM3431H*/WM3434H*

JAN. 2005 PRINTED IN KOREA

P/No.:3828ER3035Q

CONTENTS
1. SPECIFICATIONS .........................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4
3. PARTS IDENTIFICATION ............................................................................................................ 6
4. INSTALLATION & TEST ............................................................................................................... 7
5. OPERATION ................................................................................................................................10
6. WIRING DIAGRAM/PROGRAM CHART .....................................................................................12
7. TROUBLESHOOTING.................................................................................................................13
7-1. BEFORE PERFORMING SERVICE ...................................................................................13
7-2. QC TEST MODE.................................................................................................................13
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY ......................................................13
7-4. ERROR DISPLAY ...............................................................................................................14
8. ERROR DIAGNOSIS AND CHECKLIST .....................................................................................16
8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION ........................................16
8-2. FAULT DIAGNOSIS AND TROUBLE SHOOTING .............................................................19
9. DISASSEMBLY INSTRUCTIONS ...............................................................................................29
10. EXPLODED VIEW .....................................................................................................................38
10-1. CABINET & CABINET COVER ASSEMBLY.....................................................................38
10-2. CONTROL PANEL & DISPENSER ASSEMBLY...............................................................39
10-3. DRUM & TUB ASSEMBLY................................................................................................40
10-4. DRYER .............................................................................................................................41

1. SPECIFICATION
ITEM

WM3431H*

WM3434H*

POWER SUPPLY

AC 120 V, 60 Hz

PRODUCT WEIGHT

147 lbs. (68 kg)

ELECTRIC
POWER
CONSUMPTION

WASHING

140 W

SPIN

410 W

FAN MOTOR

25 W

DRAIN MOTOR

80 W

WASH HEATER

1000 W

DRY HEATER

1200 W

WASH

50 rpm

REVOLUTION
SPEED

SPIN

0-1400 rpm

0-1200 rpm

OPERATIONAL WATER PRESSURE

4.5-145 psi (30-1000 kPa)

CONTROL TYPE

Electronic

WASH CAPACITY

2.11 cu. ft

DRY CAPACITY

8 13 16 lbs. (4 kg)

DIMENSIONS

23 3 8" (W) X 25 3 8 " (D) X 33 1 4 " (H)

CYCLES

WASH/RINSE TEMPERATURES

SPIN SPEEDS

OPTIONS

Soak, Extra Wash, Rinse+Spin, Spin Only, Dry Only, Delay Wash, Extra Rinse

DELAY WASH

up to 19 hours

DOOR SWITCH TYPE

Bi-Metal

WATER LEVEL

10 steps (by sensor)

LAUNDRY LOAD SENSING

Incorporated

ERROR DIAGNOSIS

Incorporated

POWER AUTO OFF

Incorporated

CHILD LOCK

Incorporated

AUTO RESTART

Incorporated

2. FEATURES & TECHNICAL EXPLANATION
2-1.FEATURES
n

Automatic Process From Washing To Drying
Automatic process from washing to drying can be
selected easily.

More economical by using Intelligent Wash
System
Intelligent Wash System detects the amount of load and
water temperature, and then determines the optimum
water level and washing time to minimize energy and
water consumption.

Direct Drive System
The advanced Brushless DC motor directly drives the
drum without belt and pulley.

Child-Lock
The Child-Lock prevents children from pressing any
button to change the settings during operation.

Built-in Heater
Internal heater automatically heats the water to the
optimal temperature on selected cycles.

Low noise speed control system
By sensing the amount of load and balance, it evenly
distributes load to minimize the spinning noise level.

Auto Restart
If the washing machine is turned off by a power failure, it
will restart automatically from the position it stopped.

2-2. NEURO FUZZY WASHING TIME OPTIMIZATION
To get the best washing performance, optimal time is determined by the water temperature,
the selected washing temperature, and the size of the load.

water
temperature
washing time
selected
washing
temperature

NEUROFUZZY

the best
washing
performance

rinsing time
spin rhythm, time

load
size

SENSING

PROCESSING

DETERMINATION

EFFECT

2-3. WATER LEVEL CONTROL
This model incorporates a pressure sensor which can sense the water level in the tub.
The water supply is stopped when the water level reaches the preset level, the washing
program then proceeds.
Spinning does not proceed until the water in the tub drains to a certain level.

3. PARTS IDENTIFICATION

울
란제 리

ACCESSORIES

4. INSTALLATION & TEST
Before servicing, ask the customer what the trouble is.
Check the setup (power supply is 120 V AC, remove the transit bolts....).
Check with the troubleshooting guide.
Plan your service method by referring to the disassembly instructions.
Service the unit.
After servicing, operate the appliance to see whether it functions correctly.
STANDARD INSTALLATION
The appliance should be installed as follows:

REMOVE THE SHIPPING

INSTALL THE APPLIANCE

ADJUST THE

BOLTS

ON A FLAT AND FIRM SURFACE

LEVELING

Remove the 4 shipping bolts
with the supplied wrench.

Turn the leveling feet to adjust
the appliance.

Do lower bolts first remove
easily.
Keep the shipping bolts and
wrench for future use.
Insert the 4 caps
(provided) into the hole.

Turn clockwise to raise;
counterclockwise to lower.

HOW TO CONNECT THE INLET HOSE
Verify that the rubber washer is inside of the
valve connector.
Tighten the inlet hose securely to prevent leaks.

CONNECT THE DRAIN HOSE

Make sure that the hose is not twisted.

Avoid submerging the end of the hose.

The end of the drain hose should be placed less than 96” from the floor.
CONNECT POWER PLUG

Washer should be connected to dedicated
circuit.

Connect the power plug to the wall outlet.

TEST OPERATION
Preparation
for washing.

Press the POWER button.

Press the Start/Pause
button.

Check automatic reverse
rotation.

Check the water supply.

Connect the power plug to
the outlet.
Connect the inlet hose.

MAX

Check the water heating
function.

max

Press the Wash/Rinse button
and the present temperature will
be displayed.

Check if the drum rotates
clockwise and counterclockwise.

Check drain and spin
functions.

Power off and open the
door

• Power off and power on.
• Press the Spin Speed button.
• Press the Start/Pause button.
• Check the spin and drain
functions.

Power off.
Check if the door can be
opened after 3 minutes.

Check if water is supplied
through the detergent dispenser.

Water removal

If SVC is needed, remove the
remaining water by pulling out
the hose and removing the
cap.

5. OPERATION

• Use this button to turn the power
On/Off.

• This display shows:
a) the estimated time remaining in the
cycle when operating.
b) an error code when an error has been
detected.

• Use this option to pre
Press and hold Dela
lock/unlock control.

• When Child lock is s
are disabled except t
the washer while it is

• Rotate the Cycle selector
knob to select the cycle
designed for different
types of fabric and soil
levels.

• Use this button to Start/
Stop the washer.

• Soak: Use this option to wash normal clothes or thick and heavy
clothes which are excessively dirty.
• Extra Wash: If the laundry is heavily soiled, this option is effective.
• Rinse+Spin: Use this option to rinse and then spin.
• Spin Only: Use this option to select spin cycle only.
• Dry Only: When you want Dry only, select this option.

• Delay Wash

o prevent unwanted use of the washer.
elay Wash button for 3 seconds to
ol.

s set, Child Lock lights and all buttons
ept the Power
button. You can lock
it is operating.

• These lights show which portion
of the cycle the washer is
operating.

• Allows the start of any cycle to
be delayed for 1~19 hours.

• Extra Rinse
• This option provides an
additional rinse cycle.
• Use this option to ensure
the removal of detergent
or bleach residue from
garments.

• Wash/Rinse, Spin Speed,
Soil Level Button

• DRY Button
• Dry programs selected by pressing the Dry button.

• Select a water temperature based on the type of
load you are washing.

• By pressing the button [Normal – More – Time –
Off – Low Temp. – Less] can be selected.

• To change the spin speed, press the Spin Speed
button repeatedly to cycle through available
options.
• To change the soil level, press the Soil Level
button repeatedly until the desired setting is on.

6. WIRING DIAGRAM/PROGRAM CHART
DISPLAY
PWB

MAIN PWB

NA
123456
123456
VT WH SB BL GY PI

WH
123
123
WH BK YL

RD
123456
123456
OR BL BN GY PI

RD
213
213
BL RD YL

GY
231 4
231 4

YL
2 4 31
2 4 31

BL RD GY WH

BL
4 3 21
4 3 21

BL WH GY YL

RD
3 21
3 21

BK YL BN

WH
321
321

BL YL RD

GN/YL

123
123

U V W

WH
1 2
1 2

1 2 3
1 2 3

YL
BK

BK BK

NOISE
FILTER

GN
/
YL

1 2 3
1 2 3

(S) (G) (S)

MOTOR
TH1

TH2

FAN MOTOR
BK

TH3

PRESSURE (TUB) (DRY DUCT) (CONDENSING DUCT)
SENSOR

RD
YL RD

1 2 3
1 2 3

WASH
HEATER

Ha
Hb

WH
1 2 3
1 2 3

Voo
GND

WH
6 5 4 3 2 1 WH
WH
WH
1 2 3
1 2 3 4 5
654321
1 2 3
1 2 3 4 5

DRY
HEATER

D
R
Y

FUSE

B
L
E
A
C
H

FUSE

INLET H M
VALVE O AI
T N

1 3 2 4
1 3 2 4

"n" PIN CONNECTOR
#250 TERMINAL+HOUSING
RING TERMINAL GROUND

WH
POWER
CORD

DRAIN PUMP
DOOR LOCK S/W

Base/Line
3854ER3001S

Soak
Cool-down

**Approx.
(Minutes)

* Wash time is in minutes.
** The total working time will vary with the load size,
water temperature and ambient temperature.

7. TROUBLE SHOOTING
7-1. BEFORE PERFORMING SERVICE
Be careful of electric shock when disconnecting parts while troubleshooting.
The voltage of each terminal is 110/120 V AC and DC when the unit is plugged in.

7-2. QC TEST MODE.
The washer must be empty and the controls must be in the off state.
1. Press the Wash/Rinse and Spin Speed buttons simultaneously.
2. Press the Power

button, while the above condition. Then buzzer will sound twice.

3. Press the Start/Pause

button repeatedly to cycle through the test modes.

Number of times the
Start/Pause button is pressed

Check Point

Display Status

None

Turns on all lamps and locks the door.

1 time

Tumble clockwise.

rpm (40~50)

2 times

Low speed Spin.

rpm

3 times

High speed Spin.

rpm

4 times

Inlet valve for bleach turns on.

Water level frequency (25~65)

5 times

Inlet valve for main wash turns on.

Water level frequency (25~65)

6 times

Inlet valve for hot water turns on.

Water level frequency (25~65)

7 times

Inlet valve for dry turns on.

Water level frequency (25~65)

8 times

Tumble counterclockwise.

rpm (40~50)

9 times

Heater turns on for 3 sec.

Water temperature

10 times

Drain pump turns on.

Water level frequency (25~65)

11 times

Dry operation for 6 minutes.

Temperature in Dry duct.

12 times

Power off and unlock the door.

Turn off all lamps.

7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
Press the Wash/Rinse and Spin Speed button simultaneously.

The digits indicate the water level frequency ( x.1 kHz ).
So, for example a display indicating 241: a Water level frequency of 241 x.1 kHz
= 24.1 kHz

7-4. ERROR DISPLAY
If you press the Start/Pause button when an error is displayed, any error except
will disappear
and the machine will go into the pause status.
In case of
if the error is not resolved within 20 sec., or in the case of other errors,
if the error is not resolved within 4 min., power will be turned off automatically and the error code will
blink. In the case of
, power will not be turned off.

ERROR

SYMPTOM

CAUSE
• Correct water level (246) is not reached within 8 minutes
after water is supplied or it does not reach the preset water
level within 25 minutes.

WATER INLET
ERROR

IMBALANCE
ERROR

DRAIN
ERROR

OVER FLOW
ERROR

• Water is overflowing (water level frequency is over 213).
※ If
is displayed, the drain pump will operate to
drain the water automatically.

PRESSURE
SENSOR
ERROR

• The SENSOR SWITCH ASSEMBLY is out of order.

DOOR OPEN
ERROR

HEATING
ERROR

• The load is too small.
• The appliance is tilted.
• Laundry is gathered to one side.
• Non distributable items are put into the drum.

• Not fully drained within 10 minutes.

• Door not all the way closed.
• Loose electrical connections at Door switch and
PWB Assembly.
• The DOOR SWITCH ASSEMBLY is out of order.

• The THERMISTOR is out order.

ERROR

CURRENT
ERROR

SYMPTOM

CAUSE
• MAIN PWB ASSEMBLY is out of order
Replace the MAIN PWB ASSEMBLY
• Winding in the STATOR ASSEMBLY is short-circuited.
Replace the STATOR ASSEMBLY
•“
” is dispplayed during a high spin
Replace the LEAD WIRE ASSEMBLY (MOTOR)

MOTOR
ERROR

• The connector in the LEAD WIRE ASSEMBLY is not connected to
the connnector of STATOR ASSEMBLY
Reconnect or repair the connector
• The hall sensor is out of order/defective.
Replace the STATOR ASSEMBLY

DRY
HEATOR
ERROR

• The Dry Heater is out of order
Replace the Dry Heater
• The Connector of the Dry Heater is not connected properly to the
connector in the Main PWB ASSEMBLY
Reconnect or repair the connector
• The Dry fan motor is out of order
Replace the fan Motor.

8. ERROR DIAGNOSIS AND CHECKLIST
8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION

SYMPTOM
NO POWER

GUIDE FOR SERVICE CALL

Is the power plug connected firmly to
120V~ outlet?

YES
Power failure? or Breaker opened?

NO
Visit to check

Water inlet trouble
Is "

" displayed?

YES
Is the tap opened?

YES
Is the tap frozen?

NO
Is the water supply shut-off?

NO
Is filter in the inlet valve clogged with
foreign material?

NO
Visit to check

YES

Clean the filter of
inlet valve

GUIDE FOR SERVICE CALL

SYMPTOM
¥ Door does not open
¥ Error displayed on
the program

Started with door opened?

YES

Close the door

Visit to check
Check if the door switch is O.K.

¥ DRAIN TROUBLE

Is "

" displayed?

YES
Is the drain pump filter clogged with foreign
YES
material such as pin, coin and etc.?

NO
Is the drain hose frozen with water,
kinked or crushed?
NO
Visit to check

Clean up
the filter.

SYMPTOM
Suds overflow from the
appliance.

GUIDE FOR SERVICE CALL
Is low-sudsing detergent for the drum
washing machine used?

(In this condition, wash and

YES

spin do not operate
normally)

Is the proper amount of detergent used
as recommended?

LOW-SUDSING

YES
Reduce the amount of detergent.
This appliance has the automatic suds sensing function which
operates during high-sudsing for good rinse and preventing
overflow.
When high suds are sensed, suds removing function such as
drain, water input and pause will operate without rotating the
drum.

Is softener put in the correct compartment of
the drawer?

YES

MAX

¥ Liquid laundry products
do not flow in.

max

M
A
X

Is the drawer closed during wash?

YES
Is the cap clogged?

YES
Explain proper use of liquid laundry products.
< Clean the compartment for softener >

Visit to check

Detergent Fabric
for wash softener

Liquid
Bleach

8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING
!

CAUTION

1. Be careful of electric shock or disconnecting the parts while trouble shooting.
2. First of all, check the connection of each part terminal with wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, put in the connectors correctly.

NO POWER

Is the supplied voltage 120 V AC?

Check the fuse or reset
the circuit breaker.

Replace MAIN PWB
ASSEMBLY

YES

Is the led(1) on?

YES

Are the connectors (2) on the PWB loose?

YES

Reconnect.

Is wire of the PWB ASSEMBLY disconnected?

NO
Replace PWB ASSEMBLY

YES

Reconnect.

NO WATER SUPPLY
Is water supply shut-off?

NO
NO

Open the tap.

When you press both Wash/Rinse button and
Spin Speed button simultaneously, is the water
level frequency below 240?

YES

Check the AIR CHAMBER
and the tube (clogged).

Is the inlet valve filter clogged?

YES

Clean the filter.

Is the tap opened?

YES

NO
NO

Is resistance between each terminal of INLET
VALVE ASSEMBLY is 0.8~1.2 kΩ?

Replace the INLET VALVE
ASSEMBLY.

YES
Verify the voltage of the inlet valve connector is
120 V AC.

(Refer to 7-2 QC TEST MODE)

Check electrical connection.
Replace the MAIN PWB
ASSEMBLY.

DETERGENT DOES NOT FLOW IN
Is water supplied?

Refer to
NO WATER SUPPLY

Check the wiring.

YES
Are replaceptacles correctly connected to the
terminals of the INLET VALVE ASSEMBLY?

MAX

YES

max

Is detergent put in the correct compartment of
the dispenser?

Put the detergent in the
correct position

M
A
X

: Detergent

YES
Detergent Fabric
for wash softener

Liquid
Bleach

Is the detergent caked or hardened?

MAIN WASH

YES

Clean the dispenser.

SOFTENER/BLEACH DOES NOT FLOW IN

Is water supplied?

YES
Are receptacles correctly connected to the terminals
of the INLET VALVE ASSEMBLY?

Refer to
NO WATER SUPPLY

Check the wiring.

Put it in the correct
compartment.

YES

Clean the cap and
container.

YES

Secure the bolt.

YES

Replace the STATOR
ASSEMBLY or ROTOR
ASSEMBLY.

MAX

YES
max

M
A
X

Is softener/bleach put in the correct compartment of
the dispenser?
Detergent Fabric
for wash softener

Liquid
Bleach

YES
Is the softener/bleach cap clogged?

ABNORMAL SOUND

Is the motor bolt loosened?

NO
Is there friction noise coming from the motor?

HEATING WITHOUT WATER

When pressing Wash/Rinse and Spin Speed at
the same time after draining, is the water level
frequency 255?
When pressing and Spin Speed buttons
at the same time while washing, is the water level
frequency between 230 - 243 ?

Check the voltage between two pins while
pressing the POWER button. Is the voltage
120 V AC?

Replace the
SENSOR SWITCH
ASSEMBLY.

Replace the MAIN PWB
ASSEMBLY

AC120V

DRAIN MALFUNCTIONING

Is the drain hose twisted or frozen?

Repair the DRAIN HOSE
ASSEMBLY.

Is the impeller of the drain pump clogged?

Remove foreign material.

Is the connector disconnected or disassembled.

Reconnect or repair the
connector

Is the resistance of the drain pump coil too high or
low? (resistance of the coil is 10-20 Ω)

Repair the DRAIN PUMP
ASSEMBLY.

When checking voltage between connectors
during spin, is the voltage 120 V AC as in the
figure?

Repair the MAIN PWB
ASSEMBLY.

washing, is the voltage
120 V AC?

AC 120V

HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
Wash/Rinse,

Extra Hot : 70°C
Hot : 50°C
Warm : 40°C
Cold : 25°C

MAIN PWB ASSEMBLY.

Check electrical connection.
Replace THERMISTOR.

When checking THERMISTOR on the tub, is the
THERMISTOR loosened?

Push the THERMISTOR
tightly to the rubber.

SPIN TROUBLE

Check during spin if the frequency of the water
level is 248 or more.

YES
Press the Start/Pause button 2 times in QC
Test mode, is the drum spinning at low speed?

Check the SENSOR SWITCH
ASSEMBLY or HOSE (Pressure).
If the problem is on the SENSOR
SWITCH ASSEMBLY or the
HOSE, replace the SENSOR
SWITCH ASSEMBLY or the
HOSE.

YES

Normal

YES

Reconnect or repair
connector

Replace the STATOR
ASSEMBLY

NO
Is it disconnected, or disassembled?
[Red:3pin(1), GY:4pin(2)]

NO
Check the motor connector, is the resistance of
the terminal same as the figure?
MOTOR TERMINAL (1)

Resistance of terminal:
(1)

About 5

YES
Replace the MAIN PWB ASSEMBLY

Does the spring of Latch Hook actuate?

Replace Door Assembly.

Is DOOR SWITCH ASSEMBLY broken?

Check the DOOR SWITCH
ASSEMBLY Connector and
MAIN PWB ASSEMBLY
[Red 3 pin and blue 4 pin
white 3 pin connector (1)
connector (1)].

Replace the DOOR SWITCH ASSEMBLY.

[dHE] ERROR DISPLAY

Dry duct

Replace the thermistor.

YES

Condensing
duct

CHECK FOR DRY HEATER TROUBLE

Thermistor

CHECK FOR DRY FAN MOTOR TROUBLE

Disassemble the cabinet cover and
condensing bellows.
Is there any foreign object in condensing
bellows.

Disassemble the dry fan assy and dry duct
upper, and clean foreign object in duct and
fan.

YES

Clean the bellows

20~30
Black
Yellow

Is the tap opened?

Is the inlet valve filter clogged?

Is resistance between each terminal of
INLET VALVE ASSEMBLY 0.8-1.2 k‰?

Replace the INLET
VALVE ASSEMBLY.

Verify the voltage of the inlet valve connector
is 120 V AC.
(Refer to 7-2 QC TEST MODE)

Check electrical connection.
Replace the MAIN PWB
ASSEMBLY

9. DISASSEMBLY INSTRUCTIONS
Be sure to unplug the machine from the outlet before disassembling and repairing the parts.

CONTROL PANEL
① Unscrew 2 screws on the back of the top plate.

PLATE ASSEMBLY(TOP)

② Pull the top plate backward and upward as
shown.

③ Disconnect the Display PWB Assembly
connector from Flat cable.

Hook

④ Pull out the drawer and unscrew 2 screws.
⑤ Push 2 upper hooks and pull the Control Panel
Assembly forward.

PANEL ASSEMBLY(CONTROL)

⑥ Unscrew the 6 screws from the Control Panel

PWB ASSEMBLY(DISPLAY)

Assembly.
⑦ Disassemble the Display PWB Assembly.

PWB ASSEMBLY(MAIN)

① Unscrew the 4 screws from the back cover.
② Unscrew the 2 screws from the lower-left
side of the cabinet.
③ Disconnect the connectors.
④ Disassemble the Main PWB Assembly in
arrow direction.

DISPENSER ASSEMBLY

① Disassemble the Top plate assembly.
② Pull out the drawer.
③ Unscrew the 2 screws and push out the
dispenser assembly.

DRAWER

④ Disassemble the clamps and hoses.
⑤ Disassemble the bellows at the lower side of
the dispenser.

DISPENSER ASSEMBLY

INLET VALVE
① Disassemble the 4 connectors from the valves.
② Unscrew the 2 screws from the back of the
cabinet.

2
1

Wire color
4
3

VALVE

(DRY)

YL - BK

VALVE

(BLEACH)

GY - BK

VALVE
VALVE

(MAIN WASH)
(HOT)

WH/ - BK
BL - BK

DOOR
① Open the door.
② Unscrew the 2 screws from the Cabinet Cover.
③ Disassemble the door upward.

※ When removing the Door Assembly, it is
necessary to hold the Bracket that is inside of
the Cabinet Cover.

Method of removing remaining water
Drain in to bucket by pulling out hose and
removing cap.

CAP (REMAINING HOSE)

GASKET ASSEMBLY

① Disassemble the clamp assembly.
② Unscrew the 2 screws from cabinet cover.

③ Unscrew the screw from filter cover.
④ Put a flat ( - ) screwdriver or putty knife into
the both sides of the filter cover, and pull it
out.

⑤ Unscrew the 2 screws from the lower side of
the cabinet cover.

⑥ Unscrew the 2 screws from upper part of the
cabinet cover.

⑦ Disassemble the clamp assembly.
Tub Gasket
Clamp

⑧ Remove dry gasket clamp by loosening the
screw.

⑨ When reassembling the gasket, put the drain
hole of the gasket downward.

Drain Hole

ROTOR ASSEMBLY, STATOR ASSEMBLY, FRICTION DAMPER

① Disassemble the back cover.
② Remove the bolt.
③ Pull out the Rotor.

Rotor
Bolt

(ROTOR ASSEMBLY)

③ Unscrew the 2 screws from the tub bracket.
④ Remove the 6 bolts on the stator.
⑤ Unplug the 2 connectors from the stator.

HOW TO ASSEMBLE THE MOTOR

(STATOR ASSEMBLY)

⑥ Disassemble the damper hinges from the tub
and base.
⑦ Separate the dampers.
Hinge
(Damper)

NOTE
Once removed, replace the damper pin with new
one.

Friction
Damper

(FRICTION DAMPER)

PUMP
① Disassemble the cabinet cover.
② Separate the pump hose and the bellows from
the pump assembly.
③ Disassemble the pump assembly in arrow
direction.

HEATER
① Disassemble the back cover.
② Separate 2 connectors from the heater.
③ Loosen the nut and pull out the heater.
Washing
Heater
Nut

Ring Terminal

• When assembling the heater, insert the heater
into the heater clip on the bottom of the tub.
• Tighten the fastening nut so the heater is
secure.

THERMISTOR
① Disassemble the back cover.
② Unplug the white connector from the
thermistor.
③ Pull it out by holding the bracket of the
thermistor.

SWITCH ASSEMBLY, DOOR LOCK

① Open the door and disassemble the Clamp
assembly.
② Unscrew the 2 screws.
③ Disconnect the connector from the Door
switch assembly.
NOTE
Reconnect the connector after replacing the
DOOR SWITCH ASSEMBLY.

WHEN A FOREIGN OBJECT IS STUCK BETWEEN DRUM AND TUB

① Disassemble the back cover.
② Separate the heater from the tub.
③ Remove any foreign objects (wire, coin, etc.)
by inserting a long bar in the opening.

① Remove 6 screws and dry fan assembly.

Dry fan
Ass’y

Dry Duct
Upper

② Remove 7 screws and dry duct upper.

① Remove 2 screws and dry heater.

Thermostat

② Remove thermostat.

Dry Heater

① Remove 17 screws from Dry duct upper and
Dry fan Assembly.

① Remove 5 screws and condensing duct.

10. EXPLODED VIEW AND PART LIST
10-1. CABINET & CABINET COVER ASSEMBLY

A153
A110

A152

A151

A101

A102
A104
A150
A103

A141
A100

A485
A130
A440

A140

A430

A133

A450

A410

A303

A275

A310

A200

A300

HOT (RED)

A201

A276

COLD (BLUE)

A220

10-2. CONTROL PANEL & DISPENSER ASSEMBLY

F322

F321
F170

F300

F160

F440

F441

F220
F120

F110

F210

F130

F215

10-3. DRUM & TUB ASSEMBLY

10-4. DRYER

REPLACEMENT PARTS LIST
Before replacing any part of these components
Read carefully the safety precautions in this manual
NOTE : S(Safety Parts), AL(Alternative parts)
LG MODEL: WD-14311RD.AOWEEUS
Run_Date : 2005-01-24
YOUR MODEL: WM3431HW
SPECIFICATION: 120V 60Hz
S AL LOC
DESCRIPTION
PARTS No.
Q'TY
REMARKS
CAUTION :

*001
*002
*003
*004
A100
A101
A102
A103
A104
A110
A130
A133
A140
A141
A150
A151
A152
A153
A200
A201
A220
A275
A276
A300
A303
A310
A410
A430
A440
A450
A485
F110
F120
F130
F140
F160
F170
F210
F215
F220
F300
F310
F321
F322
F325
F440
F441
F461
K100
K105
K110
K115
K121
K122

MANUAL ASSEMBLY,OWNERS
BOX,CARTON
SPANNER
MANUAL,SERVICE
CABINET ASSEMBLY
COVER,BACK
BUSHING
HOLDER
BOLT ASSEMBLY
TOP PLATE ASSEMBLY
COVER,CABINET
CLAMP ASSEMBLY
HINGE
HOLDER
DOOR ASSEMBLY
DOOR FRAME,OUTER
DOOR FRAME,INNER
HANDLE
BASE,CABINET
BRACKET,BASE
LEG ASSEMBLY
HOSE,INLET
HOSE,INLET
CASE
CAP,DRAIN HOSE
CAP,COVER
SWITCH ASSEMBLY,SENSOR SWITCH
POWER CORD ASSEMBLY
SWITCH ASSEMBLY,DOOR
PWB(PCB) ASSEMBLY,MAIN
FILTER ASSEMBLY(CIRC)
PWB(PCB) ASSEMBLY,DISPLAY
HARNESS,PWB
CABLE,FLAT
HARNESS,MOTOR
VALVE ASSEMBLY,INLET
VALVE ASSEMBLY,INLET
PANEL ASSEMBLY,CONTROL
KNOB,ROTARY
PANEL ASSEMBLY,DRAWER
DISPENSER ASSEMBLY
BELLOWS
HOSE,INLET
HOSE,INLET
HOSE,INLET
HOSE,PUMP
CLAMP
CLAMP
TUB ASSEMBLY,DRUM
TUB ASSEMBLY,OUTER[SUB5]
TUB ASSEMBLY,INNER[DRUM]
SPIDER
BEARING,BALL
BEARING,BALL

3829ER3031H
3890EZ3446K
3W20018B
3828ER3035Q
3091ER0006P
3808FR1202A
4830FR3107A
4930FR3151A
4011FR3159G
3457ER1005A
3550ER1018A
2W20017C
4774ER2006A
4930ER4001A
3581ER1007B
3212ER1015A
3212ER1014A
3650ER2003A
3040FR0049A
4810ER3016A
4779ER3002A
5215FD3715G
5215FD3715H
3110ER3002A
5006ER3009A
5006ER3012A
6600FA1704S
6411ER1006E
6601ER1005B
6871EC1126F
6201EC1006A
6871EC2034A
6877ER1030L
6877EC2001C
6877ER1007F
5220FR2075C
5220FR2006H
3721ER1080N
4940ER3015B
3721ER1066W
4925ER1017B
4738ER2004A
5214FR4125D
5214FR4125L
5214ER4003A
5214FR3188G
4861FR3068C
4861FR3068C
3045ER0029D
3045ER0030A
3045ER1010C
4434ER1005A
4280FR4048M
4280FR4048G

1
1
1
0
1
1
1
1
4
1
1
1
1
3
1
1
1
1
1
4
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1

LG MODEL: WD-14311RD.AOWEEUS
YOUR MODEL: WM3431HW
S AL LOC
DESCRIPTION
K123
K125
K140
K141
K143
K146
K310
K320
K340
K344
K346
K350
K360
K411
K420
K510
K520
K530
K540
K550
K610
K611
M100
M101
M105
M110
M120
M210
M215
M216
M220
M230
M240

Run_Date : 2005-01-24
SPECIFICATION: 120V 60Hz
PARTS No.
Q'TY

BOLT ASSEMBLY
SEAL
COVER,TUB
SEAL
SCREW,DRAWING
COVER,PROTECT
THERMISTOR ASSEMBLY
HEATER ASSEMBLY
MOTOR ASSEMBLY,PUMP
CASING ASSEMBLY,PUMP
FILTER(MECH)
STATOR ASSEMBLY
ROTOR ASSEMBLY
HOLDER
SPRING,HINGE
GASKET
BELLOWS
CLAMP ASSEMBLY
CHAMBER,AIR
HOSE,INLET
DAMPER ASSEMBLY,FRICTION
HINGE
DUCT,OUTLET
DUCT,OUTLET
DUCT,INLET
MOTOR ASSEMBLY,FAN
DUCT ASSEMBLY
THERMOSTAT ASSEMBLY
SEAL
CLAMP
HEATER ASSEMBLY
THERMISTOR ASSEMBLY
FUSE ASSEMBLY

4040FR4051C
4036ER2003A
3550ER0028A
4036ER4001A
1SZZFA4362C
3550ER3011A
6322FR2046C
5301FR1158K
4681EA2001D
3661FR2093E
5230ER3001A
4417FA1994E
4413ER1001B
4930FR3040A
4970FR2084T
4986ER1003A
4738FR1145A
4861ER2001B
3504FR3134A
5214FR4125M
4900FR2030F
4774FR3118B
5208ER1006A
5208ER1005A
5208ER2003A
4680ER1001G
5209ER0004B
6931FR3108A
4036FR4045A
4860ER3004A
5301FR2076G
6322FR2046K
6901ER4001A

1
1
1
1
13
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
2
4
1
1
1
1
1
1
1
1
1
1
1

REMARKS

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3828ER3035Q LG Frnt Load Washer 3431 3434

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