LG WD-8050F User manual

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : WD-8050F/WD-1050F/WD-1250F
WD-8050FH/WD-1050FH/WD-1250FH
WD-8052X/WD-1052X
WD-8052XH/WD-1052XH
CAUTION

P/No.:3829FR9043S

CONTENTS
1. SPECIFICATION............................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4
3. PARTS IDENTIFICATION ............................................................................................................ 6
4. INSTALLATION............................................................................................................................. 7
5. OPERATION ................................................................................................................................10
6. WIRING DIAGRAM......................................................................................................................12
7. TROUBLE SHOOTING................................................................................................................13
7-1.BEFORE SVC CHECKING ..................................................................................................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 ....................................................................................15
8-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION ...........................................15
8-2. FAULT DIAGNOSIS AND TROUBLE SHOOTING .............................................................18
9. DISASSEMBLY INSTRUCTIONS ...............................................................................................24
10. EXPLODED VIEW AND PARTS LIST .......................................................................................31
10-1. THE EXPLODED VIEW OF CABINET ASSEMBLY .........................................................31
10-2. THE PARTS LIST OF CONTROL PANEL AND DISPENSER ASSEMBLY ......................34
10-3. THE PARTS LIST OF DRUM AND TUB ASSEMBLY.......................................................36
ƒRAPPENDIX (The type of power cord) ...........................................................................................39
2

3
1. SPECIFICATION
ITEM WD- 1050F(H)/1250F(H) WD-8050F(H)/8052X(H)/1052X(H)
POWER SUPPLY AC 220-240V, 50Hz / 60Hz
PRODUCT WEIGHT 67kg
WASHING 190W
SPIN(800rpm) 300W
DRAIN MOTOR 32W
WASH HEATER 2000W
WASH 45rpm
SPIN 400/600/800/(1000)/(1200) rpm
OPERATION WATER PRESSURE 0.3-10kgf/§†(30-1000kPa)
CONTROL TYPE Electronic
7.0kg/6.0kg
Synthetic (4.0kg), Delicate (3.0kg)
Wool (2.0kg)
DIMENSION 600mm(W)¡¿600mm(D)¡¿850mm(H)
WASH PROGRAM Coloreds, Whites, Synthetic, Delicate, Wool
RINSE Super, Normal, Hold
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 7 items
POWER AUTO OFF Adopted
CHILD LOCK Adopted
AUTO RESTART Adopted
ECO Adopted
RAPID Adopted
ELECTRICITY
CONSUMPTION
REVOLUTION
SPEED
WASH CAPACITY

¡ÆJumbo drum
LGÕs jumbo drum can wash about 40% more per load than
conventional washing machine. A bigger durm improves the
wash performance.
¡ÆMore 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.
¡ÆChild-Lock
The Child-Lock system has been developed to prevent
children from pressing any button to change the programme
during operation.
¡ÆLow noise speed control system
By sensing the amount of load and balance, evenly
distributes load to minimize the spinning noise level.
¡ÆAuto 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
Temp Eco/Rapid
40%

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 water supply is stopped, 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
ƒUWhile program is operating.
ƒUWhile 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
Inlet hose Spanner
Power plug
Control panel
Door
Lower cover
Levelling legs
(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.
¡ÆACCESSORIES

¢Before servicing ask troubles of customers
¢Check the adjustment(power supply is 220-240V, remove the transit bolts....)
¢ŁCheck the troubles referring to the trouble shooting.
¢ØDecide service steps referring to disassembly instructions.
¢ŒAnd then, service and repair.
¢ºAfter servicing, operate the appliance whether it works O¡⁄K or NOT.
¡ÆSTANDARD INSTALLATION
The appliance should be installed as follows.
REMOVE THE TRANSIT INSTALL THE APPLIANCE ADJUST THE
BOLTS ON FLAT AND FIRM SURFACE HORIZONTAL
ƒURemove the transit bolts ƒUTurn the leveling feet to
(4EA:¤)with supplied spanner. set the appliance horizontally.
ƒUKeep the transit bolts and
spanner for future use.
ƒUThe appliance goes up by
rotating the feet clockwise.
ƒUThe appliance come down by
rotating the feet counter
clockwise.
4. INSTALLATION
7
1
High
Low

¡Æ HOW TO CONNECT INLET HOSE
ƒUCheck that the rubber packing is inside of the
valve connector.
ƒUConnect the inlet hose firmly to prevent leak.
¡ÆCONNECT DRAIN HOSE
¡ÆCONNECT POWER PLUG
8
¡⁄Make sure that the hose is not twisted.
¡The drain hose should be placed under 85§flfrom 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.

£GTEST OPERATION
9
ƒUConnect the power plug to ƒUIn case of Coloreds program.
the outlet.
ƒUConnect the inlet hose.
Preparation for Press the power button. Press the START/PAUSE
washing. button.
¡⁄Press the button¡ATEMP¡B ¡⁄Check if the drum rotates ¡⁄Check if water is supplied
and the present temperature will
clockwise and counterclockwise. through the detergent dispenser.
be displayed.
¡aWD-1050F(H)/1250F(H)¡b
¡⁄Power off and then power on.
¡⁄Check if the door can be
opened after Door Lock lamp
turns off.
¡⁄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
LED display
ƒUDisplay the remaining time (Hour : Minute ) to
finish.
ƒUIn case of abnormal operation, error indications
are displayed. ( )
ƒUSee trouble shooting guide.
Water temperature selector
ƒUPress the button to select water temperature.
ƒUThe water temperature
[40¡£C ¤A60¡£C ¤Acold] can be selected in Coloreds,
Synthetic
ƒU95¡£C is selected for Whites only.
ƒUBy pressing the button during operating the washer,
the present temperature is displayed.
For manual wash, rinse and spin speed
ƒUUse these buttons to change wash/rinse/spin
ƒUWhen lamp is off, no selection has been made.
ƒUPrewash is available for Coloreds, Whites, Synthetic
Door lock lamp
ƒUIt shows whether the door
can be opened or not.
ƒUwhen the lamp is on, the
door canÕt be opened.
Error display.
ƒUThe display blinks if there is
an error.
ƒUno inlet : Trouble with water
supply.
ƒUimbalance : The laundry is
tilted to one side.
ƒUno drain : If the drain pump
filter is clogged.
Rinse hold
ƒUIf you desire to leave fabrics in the machine
without spinning after rinse to prevent them
getting wrinkled, you may select rinse Hold by
pressing the Rinse button.
ƒUTo drain and spin, press the Rinse button to
turn off the rinse Hold lamp.
ReferRefer
14

11
h program selector
grams can be set depending on the
of the laundry.
power button is pressed.
reds program is automatically set.
ressing the button, [ Coloreds ¤A
es¤ASynthetic¤ADelicate¤A Wool ]
be selected.
Start/Pause button
ƒUUse the button to start or
pause wash cycle.
ƒUThe power turns off
automatically 4 minutes
after the pause button is
pressed.
Delay
s the button when delayed washing is
ed.
n the button is pressed, [ ]is
ayed, A maximum delay of [ ]hours
be set.
press advances time delay by the hour.
[Power]button to cancel [Time Delay].
Eco/Rapid
ƒUIf you push the Eco/Rapid button in White program,
Eco function is selected. Eco function gives you
almost the same washing effect as that in 95¡£C with
less energy consumption
ƒUIf you push the Eco/Rapid button in Coloreds or
Synthetic program, Rapid function is selected. Rapid
function reduces the whole time including the washing
and rinsing time about by half an hour.
Child - lock
ƒUChild Lock system can be
set and canceled by
pressing both [Temp] and
[Eco/Rapid ] button
simultaneously.
ƒUOnce Child Lock is set, all
button are inoperable.
ƒUChild Lock system can be
set anytime even during
Power-off, on pause and
operation.
ƒUIt is automatically cancelled
when an operational error
occurs and when the cycles
ends.
Power button
ƒUPress the button to turn power on
and off.

12
6. WIRING DIAGRAM

7-1.BEFORE SVC CHECKING
¡ÆBe careful of electric shock while trouble shooting.
¡ÆDisconnect power plug from the outlet before service.
7-2.TEST MODE.
¡ÆIf you press¡aPower¡bbutton with both¡aRinse¡band¡aSpin¡bbuttons pressed the machine can be gotten into the test
mode.
¡ÆTo check if functions operate well, press¡aStart/Pause¡bbutton in test mode as follows.
7-3.HOW TO KNOW THE WATER LEVEL FREQUENCY
ƒRPress the £Wash£and£Rinse£buttons simultaneously.
ex) 641 : Water level frequency = 241¡¿10-1 § (¡fi2¡flis ommitted)
Water is added.
13
7. TROUBLE SHOOTING
The last two digits means water level frequency(10-1 § )
If water is added in operation, number Ô6Õ will appear.
Times of press
Checking Point Display Status
None All lamps turn on
1 time Counterclockwise spin 3~6 (Drum rpm ¡10)
2 times Low speed Spin 55~65 (Drum rpm ¡10)
3 times High speed Spin 95~105 (Drum rpm ¡10)
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 main-wash operation Water level frequency(25~65)
7 times Clockwise spin 3~6 (Drum rpm¡10)
8 times
The Heater is in operation for 3 sec. Water Temperature
9 times Draining pump operation Water level frequency
10 times
Auto off operation
NOTE : Even if you press the button to check inlet valve, inlet valve does not operate until the drum
comes to a complete stop from spinning.

ERROR SYMPTOM CCAAUUSSEE
1WATER INLET
ERROR
2IMBALANCE
ERROR
3DRAIN ERROR
4OVER FLOW
ERROR
5
SENSOR PRESSURE
S/W ERROR
6DOOR OPEN
ERROR
7THERMISTOR
ERROR
§Water has not reached to the pre-set level within 4
min. since inlet val ve operated or water has not
reached to the normal level within 25 min.
§The appliance is tilted.
§Laundry is gatherd to one side.
§Non distributable things are put into the drum.
§Water has not drained enough within 5 min.
§Water is automatically being pumped out because too
much water is in the tub.
§The sensor pressure switch is out of order.
§The
¡aStart/Pause¡b button is pressed with the door
open.
§The door switch is out of order.
§The thermistor is out of order.
7-4.ERROR DISPLAY.
ƒUIf you press the¡aStart/Pause¡bbutton in error condition, any error except ÔPEÕ will disappear and the
machine will change into pause status.
ƒUIn case of¡GPE¡H,¡GtE¡H,¡GdE¡H,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¡GFE¡H, power will not be turned off.
14
imbalance
no drain
no inlet
WD-1050/1250 WD-8050/8052/1052

15
8-1.DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION
8. ERROR DIAGNOSIS AND CHEK LIST
SYMPTOM GUIDE FOR SERVICE CALL
NO POWER
Water inlet trouble
YES
YES
YES
NO
NO
YES
NO
NO
no inlet
no inlet
Is the power plug connected firmly to
AC220-240V outlet?
Power failure? or Breaker opened?
Visit to check
Is "no inlet" 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
no drain
no drain
YES
Did you press the¡AStart/Pause¡Bbutton when
the door is open?
Visit to check
< Check if the door switch is O.K >
Is "no drain" displayed?
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
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
¥OVER FLOW ERROR
¥PRESSURE S/W ERROR
¥THERMISTOR ERROR
Refer to
7-4. ERROR DISPLAY
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 using 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 LATHERING
DETERGENT
Compartment for
softener
ƒTThis appliance has the automatic suds sensing function which
operates under much suds condition for good rinse and
preventing overflow.
ƒT When much suds are sensed, suds removing fuction such as
drain, water input and pause will operate without rotating the
drum.

18
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. Voltage between each terminal is AC 220-240V while applying an electric current
(except secondary part of the transformer and sensors)
21
3
PWB ASSY (POWER)
NO
NO
YES
YES
YES
NO
NO
YES
Check the fuse?
Replace PWB assy
(Power)
Reconnect and repair
connector.
Replace PWB assy(Main)
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
When measuring the voltage of blue
connector of the PWB assy (Power),
is the voltage AC 220-240V?
Is ¤Øconnector disconnected or
or is the contact bad or cut?
Is wire of the PWB assy(Display)
disconnected?
Replace PWB assy(Display)
NO POWER
CAUTION

19
MAX
NO
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
Wiring diagram
Is the water supply shut-off?
Is the tap opened?
When you press both¡AWash¡Bbutton and¡ARinse¡B
buttons simultaneously, is the water level frequency
below 40?
Is the inlet valve filter clogged with impurity?
Is resistance of the inlet valve connector
between 2 to 8
k § ?
Check the voltage between each terminal of inlet
Valve is AV 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 hardened?
Open the tap.
Check the chamber(Air)
and the tube clogged
with impurity.
Clean the filter.
Replace the inlet valve.
Replace PWB assy(Main)
Refer to solution
¡ANO INLET¡B
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