LG WD-14331(6)AD User manual

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : WD-14331(6)AD
WD-12331(6)AD
WD-14331(6)RD
WD-12331(6)RD
WD-14335AD
CAUTION

FEB. 2005 PRINTED IN KOREA P/No.:3 2 ER3044D

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
. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................16
-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION ...........................................16
-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

ITEM
PO WER SUPPLY 220V-240V~, 50HZ
PRODUCT WEIGHT 61kg
WASHI G 135W
SPI 530W
FA MOTOR 25W
DRAI MOTOR 32W
WASH HEATER 2000W
DRY HEATER 1200W
WASH 45rpm
SPI
400/600/800/1000/1200/1400 rpm
400/600/800/1000/1200 rpm
OPERATIO WATER PRESSURE 0.3-10kgf/cm
2
(30-1000kPa)
CO TROL TYPE Electronic
WASH CAPACITY 7.0kg (Cotton)
DRY CAPACITY3.5/4.0kg (Cotton)
DIME SIO 600mm(W)550mm(D)850mm(H)
WASH PROGRAM Cotton, Cotton-Eco, Synthetic, Delicate, Wool/Silk, Hand Wash, Quick 30
OPTIO Intensive, Rinse Hold, Rinse+, Pre Wash, Dry
DOOR SWITCH TYPE Bi-Metal type
WATER LEVEL 9 steps (by sensor)
RESERVATIO From 3 hours to 19 hours
SE SI G OF THE LAU DRY AMOU T Adapted
FUZZY LOGIC Adapted
DISPLAY OF THE REMAI I G TIME Adapted
ERROR DIAG OSIS 10 items
POWER AUTO OFF Adapted
CHILD LOCK Adapted
AUTO RESTART Adapted
TIME SAVE Adapted
3
1. SPECIFICATIO
ELECTRICITY
CO SUMPTIO
REVOLUTIO
SPEED
WD-14331(6)AD, WD-12331(6)AD, WD-14331(6)RD, WD-12331(6)RD, WD-14335AD
WD-14335AD, WD-14331(6)AD, WD-14331(6)RD
WD-12331(6)AD, WD-12331(6)RD

Automatic process from washing to drying.
Automatic process from washing to drying can be
selected easily.
Washing capacity : 7 kg (Cotton)
Drying capacity : 3.5 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

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.
2-4.THE DOOR CAN NOT BE OPENED
While program is operating.
While Door Lock light turns on.
5
FU Y
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
Synthetic
Wool
HandWash
Drain
Cotton
C
Eco
Delicate
Quick30
Rinse+Spin
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
(4EA:)with supplied spanner. set the appliance horizontally.
󳢯Keep the transit bolts and
spanner for future use.
󳢯Insert the 4 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
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
󳢯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.
Check if the drum rotates Check if water is supplied
clockwise and counterclockwise. through the detergent
dispenser.
Press the Time Delay and Rinse
Hold buttons simultaneously and
the present temperature will 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
ED display
󳢯Display the estimated remaining time
(Hour : Minute) to finish.
󳢯In case of abnormal operation, error
indications are displayed.
( )
󳢯See troubleshooting guide.
Water temperature selector
󳢯Press the button to select water
temperature.
󳢯95󰿽C is selected for Cotton only.
󳢯By pressing the button while
operating the washer, the present
temperature is displayed.
Wash program selector
󳢯 program can be set depending on the type of the laundry.
󳢯If the power button is pressed, Cotton program is automatically
set.
󳢯By turning the dial, [Cotton - Synthetic - Wool/Silk - Hand Wash -
Drain - Rinse+Spin
- Quick 30 - Delicate ]can be selected.
(The opposite is possible)
Start/Pause button
󳢯Use the button to start or
pause wash cycle.
󳢯The power turns off
automatically 4 minutes
after the pause button is
pressed.
• If the laundry is heavily
soiled “Intensive” option
is effective.
• By selecting the
Intensive option, the
wash time may be
extended, depending on
the program selected.
• Is selected by pressing the Rinse Hold
button this function leaves clothes in
the machine; suspended in the water
after a rinse without entering into spin.
• To proceed through to a drain or spin,
once the rinse hold function is
completed using to program dial scroll
to the required program. (Spin)
Intensive Rinse Hold
,,,,,,,,,

11
• For additional rinse
which may assist in
removing traces of
detergent residue.
• By selecting Rinse+
function, the rinse time
and the rinse water are
increased.
• If the laundry is heavily
soiled, “Pre Wash”
course is effective.
• Pre Wash is available in
Cotton and Synthetic.
• If you want Dry, select this button.
• By pressing the botton [Normal – More – Time –
Low Temp. – Less]
Power button
󳢯Press the button to turn
power on and off.
󳢯Press the button to
cancel the delay finish.
Child - ock
󳢯Child Lock system can be set and
canceled by pressing and holding both
[Rinse+] and [Pre Wash] buttons
simultaneously more than 2 seconds.
󳢯Once Child Lock is set, all buttons
are inoperable except power button.
󳢯Child Lock system can be set
anytime even during Power-off and
operation.
󳢯It is automatically cancelled when an
operational error occur.
Time Delay
󳢯Press the button when delayed washing is
needed.
󳢯When the button is pressed, is displayed,
maximum delay of hours can be set.
󳢯Each press advances time delay by the hour.
󳢯Use [Power] button to cancel [Time Delay]
󳢯[Time Delay] means the time required from the
present to the completion of washing.
Spin button
󳢯By pressing the Spin
button the spin speed
can be chosen.
Rinse+Pre Wash Dry

6. WIRING DIAGRAM / PROGRAM CHART
* Basic Cycle
* Optional Cycle
* Pre Setting Time : Water Supply 120 sec. * Basic time is minute in washing chart
Drain 60 sec. * The actual program time can be varied with the load amount,
* ~ Time for varies as the temperature or the amount of laundry water temperature or ambient temperature
Cotton(95℃)About 2:05
(2:02)
(1:40)
844
~
87
Synthetic
Delicate
Wool/Silk
About 52
About 50
About 1:20
4
18
Drain About 1
Rinse
+ Spin About
21(18)
4
18
26
~
51
Handwash About 44
4
24
Quick About 30
Cotton(60℃)About 1:43
842
~
44
❋( ) : WD-12331(6)AD
12

13
7. TROUBLE SHOOTING
7-1.BEFORE PERFORMING SERVICE
Be careful of electric shock or disconnecting the parts while troubleshooting.
Voltage of each terminal in 220-240V~ and DC while applying an electric current.
7-2.QC TEST MODE.
Press Intensive and Rinse Hold button simultaneously.
Power supply on with pressing upper two buttons.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 Hold button.
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 [TIME DELAY] and [RINSE HOLD] button.
■Thermistor in dry duct : Press the [DRY] button.
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 Counterclockwise spin (left) Drum rpm (About 40~52)
2 times Low speed Spin Drum rpm (About 55~70)
3 times High speed Spin Drum rpm (About 130~143)
4 times Inlet valve for prewash operation Water level frequency (25~65)
5 times Inlet valve for mainwash operation Water level frequency (25~65)
6 times Hot inlet valve in case of hot water fill
7 times Inlet valve for Dry operation Water level frequency (25~65)
times Clockwise spin (right) Drum rpm (About 40~52)
9 times Wash
Heater is in operation for 3 sec.
Water temperature
10 times Dry Heater & Dry fan operation
11 times
Auto off operation

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 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 displayed 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
-1.DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION
. 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
-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
MAIN PWB ASSEMBLY
(1)
MAIN PWB ASSEMBLY
(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