LG WDM-1018 SERIES User manual

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE
CORRECTLY BEFORE OFFERING SERVICE.
website : http://www.LGEservice.com
e-mail : http://LGEservice.com/techsup.html
MODEL : WD(M)-1018(0~9)S
WD(M)-8018(0~9)S
WD(M)-1018(0~9)N
WD(M)-8018(0~9)N
CAUTION

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. TROUBLESHOOTING.................................................................................................................13
7-1.BEFORE PERFORMING SERVICE....................................................................................13
7-2.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 TROUBLESHOOTING ..............................................................19
9. DISASSEMBLY INSTRUCTIONS ...............................................................................................25
10. EXPLODED VIEW.....................................................................................................................32
10-1. THE EXPLODED VIEW OF CABINET ASSEMBLY .........................................................32
10-2. THE EXPLODED VIEW OF CONTROL PANEL & DISPENSER ASSEMBLY..................33
10-3. THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY...................................................34
APPENDIX (Replacement parts list).........................................................................................35
2

ITEM WD(M)-1018(0~9)S WD(M)-1018(0~9)N
WD(M)-8018(0~9)S WD(M)-8018(0~9)N
POWER SUPPLY 220-240V~, 50Hz
PRODUCT WEIGHT 52kg 57kg
WASHING 190W
SPIN (800rpm) 300W
DRAIN MOTOR 32W
WASH HEATER 1900W
WASH 50rpm
SPIN WD(M)-8018(0~9)S(N) 400/500/600/800rpm
WD(M)-1018(0~9)S(N) 400/600/800/1000rpm
OPERATION WATER PRESSURE 0.3-10kgf/cm
2
(
30-1000kPa
)
CONTROL TYPE Electronic
3.5kg 5.0kg
Synthetic(1.5), Delicate(1.0) Synthetic(1.7), Delicate(1.5)
Wool(1.0), Hand Wash(1.0) Wool(1.5), Handwash(1.5)
Quick 30(1.0) Quick 30(1.5)
DIMENSION
600mm(W)360mm(D)850mm(H)600mm(W)440mm(D)850mm(H)
WASH PROGRAM Cotton, Synthetic, Delicate, Wool, Hand Wash, Quick 30, Drain
OPTION Bio, Rinse +, Pre-Wash, Crease Care
DOOR SWITCH TYPE Bi-Metal type
WATER LEVEL 9 steps
(
by sensor
)
RESERVATION From 3 hours to 19 hours
SENSING OF THE LAUNDRY AMOUNT Adopted
FUZZY LOGIC Adopted
DISPLAY OF THE REMAINING TIME Adopted
ERROR DIAGNOSIS 10 items
POWER AUTO OFF Adopted
CHILD LOCK Adopted
AUTO RESTART Adopted
3
1. SPECIFICATION
ELECTRICITY
CONSUMPTION
REVOLUTION
SPEED
WASH CAPACITY

Protection against creases
With the alternate rotation of the drum, creasing in the laundry
is minimized.
More economical by Fuzzy Logic System
FUZZY Logic 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.
Child-Lock
The Child-Lock system has been developed to prevent
children from pressing any button
(except Power button)
to change the programme during operation.
Low noise speed control system
By sensing the amount of load and balance, automatical
distributes load evenly to minimize the spinning noise level.
Auto Restart
Although the washing machine is turned off by a power failure,
it restarts automatically where it stopped when power is
supplied again. and it will be the same the machine is
unplugged and 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.
When the water level reaches to the preset level the water supply is stopped, then the washing program proceeds.
Spinning does not proceed until the water in the tub reduces a certain level.
2-4.THE DOOR CAN NOT BE OPENED
While program is operating.
While Door Lock light turns on.
5
FUZZY
LOGIC
laundry
amount
selected
washing
temperature
water
temperature
washing time
rinse time
spin rhythm, time
the best
washing
performance
SENSING
PROCESSING DETERMINATION
EFFECT

3. PARTS IDENTIFICATION
6
Hot/Cold (2EA)
Cold (1EA) Wrench
ACCESSORIES

Before servicing ask the customer what the trouble is.
Check the adjustment (power supply is 220-240V, remove the transit bolts....)
Check the troubles referring to the troubleshooting.
Decide service steps referring to disassembly instructions.
Then, service and repair.
After servicing, operate the appliance to see whether it works OKor 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 adjustable feet to
(4EA: ) with supplied wrench. set the appliance horizontally.
Keep the transit bolts and
wrench for future use.
Insert the 4 caps provided
into the hole.
The appliance goes up by
rotating the feet clockwise.
The appliance comes down by
rotating the feet counter-
clockwise.
4. INSTALLATION
7
1
High
Low

HOW TO CONNECT INLET HOSE
Check that the rubber washer 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 a fire.
Avoid submerging the end of the hose.

TEST OPERATION
9
Connect the power plug to In case of cotton program.
the outlet.
Connect the inlet hose.
Preparation for Press the power button. Press the START/PAUSE
washing. button.
Press both Spin and Option(Bio,
Rinse+)button simultaneously the
present temperature will be
displayed.
Check if the drum rotates clockwise
and counterclockwise.
Check if water is supplied through
the detergent dispenser.
Power off and then power on.
Check if the door can be
opened after Door Lock lamp
turns off.
Power off and then power on.
Turn on Spin lamps 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
LED display
Display the estimated remaining time
(Hour : Minute) to finish.
In case of abnormal operation, error
indications are displayed.
( )
See troubleshooting guide.
Eco
It is possible in cotton
course when 60 C
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.
Child - Lock
Child Lock system can be set and canceled by pressing and
holding both Option(Bio, Rinsse+) button and option(Pre
Wash, Crease Care) button simultaneously more than 2
seconds.
Once Child Lock is set, all buttons are inoperable.
Child Lock system can be set anytime even during Power-off
and operation.
It is automatically cancelled when an operational error occur.
Wash program selector
9 program can be set
depending on the type of the
laundry.
If the power button is pressed,
all lamps are on
By turning the dial, [Cotton
Delicate Quick 30 Eco
Rinse + Spin Drain
Hand Wash Wool
Synthetic] can be selected.
(The opposite is possible)

11
Power button
Press the button to turn power on and off.
Press the button to cancel the time delay.
Spin
WD(M)-8018(0~9)S No spin/400/500/600/800
WD(M)-8018(0~9)N
WD(M)-1018(0~9)S No spin/400/600/800/1000
WD(M)-1018(0~9)N
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.
ption
Bio If you want to eliminate protein stains(milk, blood, chocolate...), you may select Bio by pressing the
option button.[You can select Bio when temperature is higher than 60 C in Cotton and Synthetic.]
Rinse+If you wish to rinse more, the Rinse+option will remove any trace of detergents.
Pre Wash If the laundry is heavily soiled, “Pre Wash” course is effective.
Pre Wash is available in Cotton and Synthetic Program.
Crease Care If you want to prevent crease, select this button with spin

12
6. WIRING DIAGRAM / PROGRAM CHART
42
87
26
51
11
58
58
57
2:35(2:34)
Drain
❋ Pre Wash : If the laundry is heavily soiled, “Pre Wash”course is effective. Pre Wash is available in Cotton and Synthetic Program.
❋ Eco : By selecting Eco function, the water temperature is reduced and washing time is lengthened. So you can economize in your
consumption of energy.
❋ Rinse+ : If you wish to rinse more, the Rinse+ function will remove any trace of detergents.
❋ Bio : If you want to eliminate protein stains (milk, blood, chocolate...), you may select Bio function by pressing the option button.
❋ Quick 30 : By selecting this function, you may wash a small quantity of colored laundry which is lightly soiled fast.
❋ You can select Bio function and Eco function when temperature is higher than
60˚C in Cotton and Synthetic. If the function is
selected, the beginning water temperature can not be changed.
¡( ) : WD-1018(0~9)S(N)/WD-8018(0~9)S(N)

7-1.BEFORE PERFORMING SERVICE
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 Option (Bio, Rinse+) and Option (Crease Care/Pre Wash) button simultaneously.
Power button 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 Option (Crease Care/Pre Wash) and Time delay button simultaneously.
ex) 241 : Water level frequency = 241 10-1kHz
=24.1kHz
13
7. TROUBLESHOOTING
The digits means water level frequency (10-1 kHz)
Pressing number of
START/PAUSE button
Checking Point Display Status
None All lamps turn on
1 time Clockwise spin (right) Motor rpm (About 50)
2 times Low speed Spin Motor rpm (About 63~67)
3 times High speed Spin Motor rpm (About 79~85) : WD(M)-8018(0~9)S(N)
Motor rpm (About 95~106) : WD(M)-1018(0~9)S(N)
4 times Inlet valve for pre-wash operation Water level frequency (225~265)
5 times Inlet valve for main-wash operation Water level frequency (225~265)
Hot inlet valve in case of hot water fill
6 times Inlet valve for main-wash operation Water level frequency (225~265)
7 times Counterclockwise spin (left) Motor rpm (About 50)
8 times A Heater is in operation for 3 sec. Water Temperature
9 times Draining pump operation Water level frequency
10 times Autooff operation

14
7-4.ERROR DISPLAY.
If you press the Start/Pause button any error except will disappear and the machine will change
into pause status.
In case of if the error is not resolved within 15 sec. 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 the case of , power will not be turned off.
ERROR SYMPTOM
1WATER INLET Water has not reached to the pre-set level within 4 min. since
ERROR inlet valve operated, or water has not reached to the normal
level within 25 min.
2IMBALANCE The appliance is tilted.
ERROR Laundry is gathered to one side.
Non distributable things are put into the drum.
3DRAIN ERROR Water has not drained enough within 8 min.
4OVERFLOW Water is automatically being pumped out because too much
ERROR water is in the tub.
5
SENSOR PRESSURE The sensor pressure switch is out of order.
S/W ERROR
6DOOR OPEN The
Start/Pause button is pressed with the door open.
ERROR The door switch is out of order.
7HEATING
ERROR The thermistor is out of order.

15
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
Is the power plug connected firmly to
220-240V~ outlet?
Power failure? or Breaker opened?
Is the outlet controlled by a switch.
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

16
SYMPTOM GUIDE FOR SERVICE CALL
DOOR OPEN ERROR
Refer to
7-4 ERROR DISPLAY
Drain Trouble
NO
YES
YES
NO
NO
YES
Did you press the Start/Pause button when
the door is open?
Visit to check
Check if the door switch is O.K
Is displayed?
Is the debris filter clogged with foreign
material such as pins, coins, etc.?
Is the drain hose frozen with water, kinked, or
crushed?
Visit to check
Close the door
Clean up
the filter.

17
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 durm
washing machine used?
Is the proper amount of detergent used
as recommended?
Recommend to reduce the amount
of detergent.
Is softener put in the correct compartment of
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
DETERGENT
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, the suds removing fuction such as
drain, water input, and pause will operate without rotating the
drum.

18
8-2.FAULT DIAGNOSIS AND TROUBLESHOOTING
1. Be careful of electric shock or disconnecting the parts while troubleshooting.
2. First of all, check the connection of each part terminal with wiring diagram.
3. If you replace the PWB assembly (Main), put in the connectors correctly.
CAUTION
NO
NO
YES
YES
YES
NO
NO
YES
<PWB ASSEMBLY (MAIN)>
(RED)(RED) (WHITE)(WHITE) (WHITE)(WHITE) (BLUE)(BLUE)
Check the fuse
Check the harness
Assembly.
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
When measuring the voltage of White(3pin)
connector of the PWB assy, is the voltage
AC 220-240V?
Replace PWB assembly.
NO POWER
Cancle the
Child-Lock by pressing
both Option (Bio,
Rinse+), Option(Pre
Wash, Crease Care)
simultaneously for 3
seconds.
Normal
Does the Child-Lock is set?
First, unplug the power cord and plug again.
Check the buttons are operable.
Visit to check
ALL BUTTONS ARE INOPERABLE EXCEPT POWER BUTTON

19
NO
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
option (HOT)
option (HOT)
MAX
max
Is the water supply shut-off?
Is the tap opened?
When you press both Option(Pre Wash/Crease
care) button and Time Delay button simultaneously,
is the water level frequency below 240?
Is the inlet valve filter clogged with impurity?
Is resistance of the inlet valve connector
between the 2 to 8 kΩ?
Check the voltage between each terminals of
inlet Valve is 220 - 240V~.
(Refer to 7-2 TEST MODE)
Is water supplied?
Are replaceptacles correctly connected to the
terminals of inlet valve?
Is detergent put in the correct compartment of
the drawer?
Is the detergent caked or hardened?
Open the tap.
Check the chamber (Air)
and the tube clogged
with impurity.
Clean the filter.
Replace the inlet valve.
Replace PWB assembly
Refer to solution
NO INLET
Check the wiring on the
dispenser.
Put the detergent in the
correct position
PRE+MAIN
MAIN WASH
: Detergent
Clean the drawer.
NO WATER SUPPLY
DETERGENT DOES NOT FLOW IN
MAIN
WASH
SOFTENER
PRE -
WASH

20
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
option (HOT)
MAX
max
ABNORMAL SOUND
SOFTENER DOES NOT FLOW IN
Fix the bolt tightly.
Replace the V-belt
(4400FR3116A)
Replace the motor.
Refer to
NO WATER SUPPLY
Check the wiring on the
dispenser.
Put it in the correct
compartment.
Clean the cap and
drawer.
Is the pulley bolt loosened?
Is the belt worn?
Is there friction noise from the motor?
Is water supplied?
Are receptacles correctly connected to the
terminals of inlet valve?
Is softener put in the correct compartment of
drawer?
Is the softner cap clogged?