LG WD-14120(5)RD User 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- ock
The Child-Lock system has been developed to prevent
children from pressing any button to change the program
during operation.
ow 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 ash cycle.
•The po er 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
Quick-
30
Cotton-Eco
Rinse Hold
Super
Normal
Delay finish
• Press the button hen reservation ashing 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 Po er-Off, on Pause and operation.
It is automatically cancelled hen an operational error
occurs and hen the cycle ends.
• When po er is off, the LED indicates [ ] only.
During operation, or hen the programme is paused
the LED ill 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 ater temperature.
• The ater 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
asher, the present temperature is displayed.
ON/OFF button
• Press the button to turn
po er on and off.
Door lock display
• It sho s hether the door can be opened or not during
the ashing.
• If the lamp is off, the door can be opened .
For manual wash, rinse and spin
• Use these buttons to change ashing
method, rinse times, spinning speed.
• When lamp is off, no selection has been
made.
• Pre ashing is available for Cotton,
Cotton-Eco, Synthetic program.
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
Quick-
30
Cotton-Eco
Rinse Hold
Super
Normal
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 hen a drying cycle is complete.
• When you are not remove a load of clothes from
the dryer as soon as it stops, rinkles can form.
• The COOL DOWN operating periodically tumbles, rearranges and fluffs
the load to avoid rinkles ithout heat for up to 4 hours.
• The message ill 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 ash
program.
• This function in not
available ith
Quick 30 program.

12
6. WIRING DIAGRAM / PROGRAM CHART
MAIN PWB
NA
YL
YL
BLBL 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
WH
WH
BK
BK
BL BN
RD
P
CP
C
C
P
WASHING
HEATER
POWER
CORD
DRY
HEATER
THER-
MOSTAT
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
1
2
3
1
1
123
123
1234
14
1
23
23 4
14
1
23
23456
12345
12345
123
123
123
12 12 12 12 123
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
* Water Supply : WáS * Intermittent Spin : IáS * Disentangle : DáT
*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
34
27 28 29 20
ED
R
YN
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)
860
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
823
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

13
7. TROUBLE SHOOTING
7-1.BEFORE SVC CHECKING
Be careful of electric shock or disconnecting the parts while trouble shooting.
Voltage of each terminal in 220-240V~ and DC while applying an electric current.
7-2.QC TEST MODE.
Pressing Rinse, and Spin button simultaneously.
Power supply ON with pressing upper two button.Then buzzer sound twice.
Press the Start/Pause button as follows.
󳛪Press the Start/Pause button more 4 times until stop spinning󳛫
7-3.HOW TO KNOW THE WATER LEVEL FREQUENCY
󳢬Press the Rinse and Spin button simultaneously.
ex) 241 : Water level frequency = 24110-1
=24.1
7-4.HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR
AT OPERATING CONDITION.
■ Thermistor in tub : Press the [WATER TEMP] button.
■ Thermistor in dry duct : Press the [DRY] button.
■ Thermistor in condensing duct : Press the [SPIN] and [DRY] button simultaneously.
The digits means water level frequency(10-1  )
Pressing number of
Start/Pausebutton
Checking Point Display Status
None All lamps turn on
1 time Clockwise spin(right) Drum rpm(About 40~52)
2 times Low speed Spin Drum rpm(About 70~90)
3 times High speed Spin Drum rpm(About 90~110)
4 times Inlet valve for pre-wash operation Water level frequency(25~65)
5 times Inlet valve for main-wash operation Water level frequency(25~65)
6 times Inlet valve for dry operation Water level frequency(25~65)
7 times Counterclockwise spin(left) Drum rpm(About 40~52)
8 times
Heater is in operation for 3 sec. Water temperature
9 times Draining pump operation Water level frequency
10 times
Dry operation for 6 minutes Auto off operation after 6 minutes

14
7-5.ERROR DISPLAY.
󳢯If you press the Start/Pause button in error condition, any error except ‘’will disappear and the
machine will change into pause status.
󳢯In case of󳛐󳛑󳛐󳛑󳛐󳛑if the error is not resolved within 20 sec., and in case of other errors,
if the error is not resolved within 4 min., power will be turned off automatically and the error only will be
blinked. But in case of󳛐󳛑, power will not be turned off.
ERROR SYMPTOM CAUSE
1
2
3
4
5
6
7
•Not reached to the water level(2 level)within 4
minutes after water supplied or not reached to
the preset water level within 25 minutes.
•Not fully drained within 5 minutes.
•Water is over flowing(over 8 level).
※If is displayed, drain pump operates to
drain water automatically.
•The sensor pressure switch is out of order.
•In case of operating the reservation function or
the other function with door opened. Close the
door, then the error display is resolved.
•The door switch is out of order.
•The appliance is tilted.
•Laundry is gatherd to one side.
•The THERMISTOR is out of order.
WATER INLET
ERROR
DRAIN ERROR
OVERFLOW
ERROR
SENSOR PRESSURE
S/W ERROR
DOOR OPEN
ERROR
IMBALANCE
ERROR
HEATING
ERROR

ERROR SYMPTOM CAUSE
8
9
10
•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)
•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
•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.
CURRENT
ERROR
MOTOR
ERROR
DRY
HEATOR
ERROR
15

16
8-1.DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION
8. ERROR DIAGNOSIS AND CHECK LIST
SYMPTOM GUIDE FOR SERVICE CALL
NO POWER
Water inlet trouble
YES
YES
YES
NO
NO
YES
NO
NO
No Inlet
Is the power plug connected firmly to
220-240V~ outlet?
Power failure? or Breaker opened?
Visit to check
Is " " displayed?
Is the tap opened?
Is the tap frozen?
Is the water supply shut-off?
Is filter in the inlet valve clogged with
foreign material?
Visit to check
Clean the filter of
inlet valve

17
SYMPTOM
• Door does not open
• Error displayed on
the program
• DRAIN TROUBLE
GUIDE FOR SERVICE CALL
NO
YES
NO
YES
Started with door opened?
NO
YES
Is the debris filter clogged with foreign
material such as pin, coin and etc.?
Is the drain hose frozen with water,
kinked or crushed?
Visit to check
Close the door
Visit to check
Check if the door switch is O K.
Is " " displayed?
Clean up
the filter.
.

18
SYMPTOM GUIDE FOR SERVICE CALL
󱄤Suds overflow from the
appliance.
(In this condition, wash and
spin do not operate
normally)
󱄤No effect of softener
YES
YES
YES
YES
YES
Is low-sudsing detergent for the drum
washing machine used?
Is the proper amount of detergent used
as recommended?
Recommend to reduce the using amount
of detergent.
Is softener put in the correct compartment of
the drawer?
Is the drawer closed during wash?
Is the softener cap clogged?
Explain how to use softener
< Clean the compartment for softener >
Visit to check
LOW-SUDSING
Compartment for
softener
󳢮This appliance has the automatic suds sensing function which
operates under much suds condition for good rinse and
preventing overflow.
󳢮When much suds are sensed, suds removing function such as
drain, water input and pause will operate without rotating the
drum.

19
8-2.FAULT DIAGNOSIS AND TROUBLE SHOOTING
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
NO
YES
YES
YES
NO
NO
YES
<PWB ASSEMBLY (MAIN)>
<PWB ASSEMBLY (MAIN)>
(1)
(2)
Check the fuse?
Replace MAIN PWB
ASSEMBLY
Reconnect the PWB
ASSEMBLY
Reconnect the PWB
ASSEMBLY
When measuring the voltage of the outlet,
is the voltage AC 220-240V~?
Is the led(1) on?
Is connector(2) disconnected or
disassembled?
Is wire of the PWB ASSEMBLY disconnected?
Replace PWB ASSEMBLY
NO POWER
CAUTION