LG WD-14120RD, WD-12120RD, WD-10120RD Service Manual

WASHING MACHINE

SERVICE MANUAL

READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES
CORRECTLY BEFORE OFFERING SERVICE.

MODEL : WD-14120(5)RD

WD-12120(5)RD
WD-10120(5)RD

CAUTION

MAY. 2003 PRINTED IN KOREA

P/No.:3828ER3018M

CONTENTS

1. SPECIFICATION............................................................................................................................3

2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4

3. PARTS IDENTIFICATION ............................................................................................................ 6

4. INSTALLATION ............................................................................................................................. 7

5. OPERATION ................................................................................................................................10

6. WIRING DIAGRAM / PROGRAM CHART...................................................................................12

7. TROUBLE SHOOTING................................................................................................................13

7-1.BEFORE SVC CHECKING ..................................................................................................13

7-2.QC TEST MODE..................................................................................................................13

7-3.HOW TO KNOW THE WATER LEVEL FREQUENCY.........................................................13

7-4.ERROR DISPLAY ................................................................................................................14

8. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................16

8-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION ...........................................16

8-2. FAULT DIAGNOSIS AND TROUBLE SHOOTING .............................................................19

9. DISASSEMBLY INSTRUCTIONS ...............................................................................................29

10. EXPLODED VIEW AND PARTS LIST .......................................................................................39

10-1. THE EXPLODED VIEW OF CABINET ASSEMBLY .........................................................39

10-2. THE EXPLODED VIEW OF CONTROL PANEL AND DISPENSER ASSEMBLY ............40

10-3. THE EXPLODED VIEW OF DRUM AND TUB ASSEMBLY .............................................41

10-4. THE EXPLODED VIEW OF DRYER ................................................................................42

 APPENDIX (Replacement parts list) ...........................................................................................43

2

3

1. SPECIFICATION

ITEM WD-14120(5)RD / WD-12120(5)RD / WD-10120(5)RD

PO

WER SUPPLY 220V-240V~, 50HZ

PRODUCT WEIGHT 71kg

WASHING 140W

SPIN 300W

FAN MOTOR 25W

DRAIN MOTOR 40W

WASH HEATER 2000W

DRY HEATER 2100W

WASH 45rpm

SPIN 14120(5)RD 400/800/1000/1400 rpm

WD-12120(5)RD 400/800/1000/1200 rpm

WD-10120(5)RD 400/600/800/1000 rpm

OPERATION WATER PRESSURE 0.3-10kgf/cm

2

(30-1000kPa)

CONTROL TYPE Electronic

WASH CAPACITY 7.2kg

DRY CAPACITY 3.6kg

DIMENSION 600mm(W)600mm(D)850mm(H)

WASH PROGRAM

Cotton, Cotton-Eco, Synthetic, Delicate, Wool, Hand Wash, Quick 30

RINSE Normal / Super / Rinse Hold

DOOR SWITCH TYPE Manual

WATER LEVEL 8 steps (by sensor)

RESERVATION From 3 hours to 19 hours

SENSING OF THE LAUNDRY AMOUNT Adapted

FUZZY LOGIC Adapted

DISPLAY OF THE REMAINING TIME Adapted

ERROR DIAGNOSIS 10 items

POWER AUTO OFF Adapted

CHILD LOCK Adapted

AUTO RESTART Adapted

TIME SAVE Adapted

ELECTRICITY

CONSUMPTION

REVOLUTION

SPEED

 Automatic process from washing to drying.

Automatic process from washing to drying can be
selected easily.
Washing capacity : 7.2 kg (Cotton)
Drying capacity : 3.6 kg (Cotton)

 More economical by 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 rotates the Drum directly
without belt and pulley.

 Child-Lock

The Child-Lock system has been developed to prevent
children from pressing any button to change the program
during operation.

 Low noise speed control system

By sensing the amount of load and balance, evenly distributes

load to minimize the spinning noise level.

 Auto Restart

Although the washing machine is turned off by a power failure, it
restarts automatically in its stopped process when power is
supplied again. And it will be the same when the machine
unplugged in operation is plugged in again.

2. FEATURES & TECHNICAL EXPLANATION

4

2-1.FEATURES

Wash

Rinse

2-2.DETERMINE WASHING TIME BY FUZZY LOGIC

To get the best washing performance optimal time is determined by sensing of water temperature,

selected washing temperature and laundry amount.

2-3.WATER LEVEL CONTROL

 This model adopts a pressure sensor which can sense the water level in the tub.
 Water supply is stopped when the water level to the preset level, then washing program proceeds.
 Spinning does not proceed until the water in the tub reduces to a certain level.

5

FUZZY
LOGIC

laundry
amount

selected
washing

temperature

water

temperature

washing time

rinsing time

spin rhythm, time

the best
washing
performance

SENSING

PROCESSING

DETERMINATION

EFFECT

3. PARTS IDENTIFICATION

6

ACCESSORIES

Power plug

Control panel

Door

Lower cover

Adjustable feet

(For detergent and

fabric softener)

Drawer

Drum

Drain hose

Lower cover cap

Drain pump filter

Drain plug

If the supply cord is damaged,

it must be replaced by the

manufacturer or its service agents
or a similarly qualified person in
order to avoid a hazard.

Spanner

󱀊 Before servicing ask troubles of customers

󱀋 Check the adjustment(power supply is 220-240V~, remove the transit bolts....)

󱀌 Check the troubles referring to the trouble shooting.
󱀍 Decide service steps referring to disassembly instructions.
󱀎 And then, service and repair.
󱀏 After servicing, operate the appliance whether it works OK or NOT.

 STANDARD INSTALLATION

The appliance should be installed as follows.

REMOVE THE TRANSIT INSTALL THE APPLIANCE ADJUST THE

BOLTS ON FLAT AND FIRM SURFACE HORIZONTAL

󳢯 Remove the transit bolts 󳢯 Turn the leveling feet to

(3EA:)with supplied spanner. set the appliance horizontally.

󳢯 Keep the transit bolts and

spanner for future use.

󳢯 Insert the 3 caps

provided into the hole

󳢯 The appliance goes up by

rotating the feet clockwise.

󳢯 The appliance come down by

rotating the feet counter

clockwise.

4. INSTALLATION

7

1

2

Low

High

 HOW TO CONNECT INLET HOSE

󳢯 Check that the rubber packing is inside of the

valve connector.

󳢯 Connect the inlet hose firmly to prevent leak.

 CONNECT DRAIN HOSE

 CONNECT POWER PLUG

8

 Make sure that the hose is not twisted.

 The drain hose should be placed under 100cm from the floor.

 Connect the power plug to the wall outlet.

 Avoid connecting several electric devices,

It may be the cause of the fire.

 Avoid submerging the end of the hose.

󳞊 TEST OPERATION

9

Power

Start/Pause

Power

󳢯Connect the power plug to

the outlet. 󳢯In case of Coloreds program.

󳢯Connect the inlet hose.

Preparation for Press the POWER button. Press

the

Start/Pause

washing. button.

Press the Temp. button Check if the drum rotates Check if water is supplied

and the present temperature will

clockwise and counterclockwise.

through the detergent dispenser.

be displayed.

Power off and then power on.
Check if the door can be

opened after 3 minutes.

Turn off Wash and Rinse after

pressing the Start/Pause button
and start the machine again.

Check drain and spin.

If SVC is needed during

check, remove

the remaining water by pulling

out the hose cap.

Check the water heating. Check automatic reverse Check the water supply.

turn.

Check drain and spin

Power off and open the

Water removal

door

10

5. OPERATION

Start/Pause button

• Use the button to start or pause wash cycle.

•The power turns off automatically in 4 minutes
after the pause button is pressed.

• Press the button to change the program.

Wash program selector

• 7 programs can be selected depending on the
type of the laundry.

• By turning the dial,
[Cotton Synthetic Delicate Wool 
Hand Wash Quick 30 Cotton-Eco]
can be selected

Power

Time Left

Time Delay

Time Save

Door Lock

Cotton

Program

Wash

Pre

Main

Cold

Small(60)

(min.)

Normal(120)

30•90•150

400

No Spin

30

40

60

95

800

1000

1400

Rinse

Spin Temp.

Dry

Start/Pause

Synthetic

Delicate

Wool

Hand
Wash

Quick­30

Cotton-Eco

Rinse Hold

Super

Normal

Delay finish

• Press the button when reservation washing is
needed.

• When the button is pressed, [ ]
is displayed.
A maximum delay of [ ] hours
can be set.

• Each press advances time delay by one hour.

• Use ON/OFF button to cancel [Time delay].

Child lock

• Once Child-Lock is set, and canceled by pressing both
[Wash] and [Rinse] simutaneusly once
Child lock is set. Once Chold Lock is set, all buttons
are iroperable.

• The Child-Lock system can be set at any time even
including during Power-Off, on Pause and operation.
It is automatically cancelled when an operational error
occurs and when the cycle ends.

• When power is off, the LED indicates [ ] only.
During operation, or when the programme is paused
the LED will indicate [ ] and the remaining time.

11

Dry selector

• Dry programs can be selected
by pressing the [Dry] button.

• By pressing the button,
[Small Normal Time
(30•90•150)] can be selected.

Water temperature selector

• Press the button to select water temperature.

• The water temperature is selected
[60°C 95°C Cold 30°C 40°C]
during cotton program.

• 95°C is selected only for cotton program.

• By pressing the button during operating the
washer, the present temperature is displayed.

ON/OFF button

• Press the button to turn
power on and off.

Door lock display

• It shows whether the door can be opened or not during
the washing.

• If the lamp is off, the door can be opened .

For manual wash, rinse and spin

• Use these buttons to change washing
method, rinse times, spinning speed.

• When lamp is off, no selection has been
made.

• Prewashing is available for Cotton,
Cotton-Eco, Synthetic program.

Power

LED display

• Display the remaining time (Hour : Minute) to finish.

• In case of abnormal operation, error indications are displayed.

• See trouble shooting guide.

• When drying cycle is completed, [COOL DOWN] is displayed on
the Multi display.

• The COOL DOWN is setting automatically when a drying cycle is complete.

• When you are not remove a load of clothes from
the dryer as soon as it stops, wrinkles can form.

• The COOL DOWN operating periodically tumbles, rearranges and fluffs
the load to avoid wrinkles without heat for up to 4 hours.

• The message will continue to display until the clothes are removed
or the START/PAUSE button is pressed.

( , , , , , , ,

, , )

Time Save

• This option can be
used to reduce the
time of a wash
program.

• This function in not
available with
Quick 30 program.

12

6. WIRING DIAGRAM / PROGRAM CHART

MAIN PWB

NA

YLYLBLBL RD

WH

RD

RD

FUSE

DOOR LOCK S/W

DRAIN

MOTOR

UVW

BK

BK

BL BN

GN

/

YL

GN

/

YL

VL

/

WH

WH

/

RD

BL

/

RD

YL

/

RD

BN

/

YL

WH

/

BK

GY

/

WH

YL

/

BK

YL

/

RD

BN

/

YL

S
K
Y

BK

/

WH

RD

/

WH

GN

/

YL

WHWHBK

BK

BL BN

RD

P

CP

CCP

WASHING
HEATER

POWER

CORD

DRY
HEATER

THER­MOSTAT

INLET
VALVE

Ha

Hb

GND

MOTOR

FAN MOTOR

PRESSURE

SENSOR

n

PIN CONNECTOR NUMBER

TERMINAL+HOUSING (#250)

EARTH TERMINAL

WIRE COLOR: BASE/LINE

(S) (S)

(G)

THERMISTOR

THERMISTOR

(Dry Duct Dry H/T)

(Tub)

D
R
Y

M
A

I

N

P
R
E

BKWH BK YL OR BL BL RD YL BL RD

RDBK

YL

BK

/

WH

BN GY PK

123456
123456

123456
123

123
123

123
123

123
456

123
123

123
123

123

123

11123

123
1234

14
12323 4

14123

23456

12345
12345

123
123

123
12

121212

123

DISPLAY
PWB

WH NARD RD RD SKY BL RD WHWH

NA

WHWH

WH
/RD

WH/RD

WH WH

NA

VL NA

NOISE
FILTER

12
12

*

Basic Cycle

* Optional Cycle

* ~ Time for varies as the temperature or the amount of laundry.

* Pre-Setting Time : Water Supply - 120 sec.

Drain - 60 sec.

Wash

Rinse

Spin

W

á

S

Pre

Main

Washing

Drain

I
á

S

W

á

S

Rinse

Washing Staycooling

Heat

Wash

Drain

W

á

S

1 2 3 7654 98 10

Normal (Hold)

Drain

I
á

S

11 12

1

W

á

S

Rinse

13 14

Drain

I
á

S

15 16

2

W

á

S

Rinse

17 18

Drain

I
á

S

19 20

W

á

S

Rinse

21 22

Drain

I
á

S

23 24

W

á

S

Rinse

25 26

Extra (Hold)

Drain

Spin

DáT

A
U
T
O
O
F
F

3

4

27 28 29 20

ED
R
Y

N

D

20

Cotton

Cotton-Eco

Quick 30

Normal

Working

Time

(Hour:Minute)

About 2:43(2:41)

120

MIN

60

MIN

120300 60120 60 60 300 120 360 60 300 120 360 60 300 120 360 60 300 120 360 60 600 120 20 20

C

Y

C

L

E

S

T

E

P

C
O
U
R
S
E

Time

(SEC)

8

60
96

About 3:03

About 30

8

HandWash

Delicate

Wool

Wash

Rinse

Rinse

Hold

Wash

+ Rinse

12

About 1:01

About 1:01

About 1:00

About 1:50

About 39

23

8

Spin

Dry

About 39

About 2:21

About 15

Rinse

+ Spin

Wash
+Spin

About 2:29

About 1:44

About 39

8

8

1

40

29

29

1

1

1

~
96

60

~
60

~

96

60
96

Synthetic

About 1:30

8

23
59

PROGRAM CHART

* Basic time is minute in washing chart
* The actual program time can be varied with the load amount,

water temperature or ambient temperature

* Water Supply : WáS * Intermittent Spin : IáS * Disentangle : DáT