LG WDM-8070FHB, WDM-10705FHB, WDM-11705FHB, WDM-12705FHB, WDM-13705FHB Service Manual

W ASHING MACHINE

SERVICE MANUAL

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

MODEL :

WD(M)-8070F(H)(B)
WD(M)-1070(5)F(H)(B)
WD(M)-1170(5)F(H)B
WD(M)-1270(5)F(H)B
WD(M)-1370(5)F(H)B
WD-8078FHB
WD(M)-8074F(H)B
WD(M)-1074(6)F(H)B

WD(M)-1174(6)F(H)B
WD(M)-1274(6)F(H)B
WD(M)-1374(6)F(H)B
WD-1078FHB
WM-1171(6)FHB
WM-1371(6)FHB
WD-1271FB

CAUTION

website : http://www.LGEservice.com
e-mail : http://LGEservice.com/techsup.html

CONTENTS

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

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

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

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

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

6. WIRING DIAGRAM......................................................................................................................12

7. PROGRAM CHART.....................................................................................................................13

8. TROUBLESHOOTING.................................................................................................................14

8-1.BEFORE PERFORMING SERVICE....................................................................................14

8-2.QC TEST MODE..................................................................................................................14

8-3.HOW TO KNOW THE WATER LEVEL FREQUENCY.........................................................14

8-4.ERROR DISPLAY ................................................................................................................15

9. ERROR DIAGNOSIS AND CHECK LIST....................................................................................17

9-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION...........................................17

9-2. FAULT DIAGNOSIS AND TROUBLESHOOTING ..............................................................20

10. DISASSEMBLY INSTRUCTIONS .............................................................................................30

11. EXPLODED VIEW AND PART LIST..........................................................................................37

11-1. THE EXPLODED VIEW OF CABINET ASSEMBLY..........................................................37

11-2. THE EXPLODED VIEW OF CONTROL PANEL & DISPENSER ASSEMBLY..................39

11-3. THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY...................................................40

ƒRAPPENDIX (Replacement parts list).......................................................................................42

2

3

1. SPECIFICATION

ITEM

POWER SUPPLY 220-240V~, 50Hz

PRODUCT WEIGHT

WASHING

SPIN (800rpm) 300W
DRAIN MOTOR 32W
WASH HEATER 2000W

WASH 45rpm

SPIN

WD(M)-8070(4)F(H)(B)/WD-8078FHB 400/600/800 rpm
WD(M)-1070(5)F(H)(B)/1074(6))F(H)B/WD-1078FHB

400/600/800/1000 rpm

WD(M)-1170(5)F(H)B/1174(6)F(H)B/WM-1171(6)FHB

400/600/800/1100 rpm
WD(M)-1270(5)F(H)B/1274(6)F(H)B 400/600/800/1000/1200 rpm
WD(M)-1370(5)F(H)B/1374(6)F(H)B/WM-1371(6)FHB/WD-1271FB

400/600/800/1100/1300 rpm

OPERATION WATER PRESSURE 0.3-10kgf/ (30-1000kPa)

CONTROL TYPE Electronic

7.0kg

Synthetic (4.0kg), Delicate (3.0kg)

Wool (2.0kg) Hand Wash (2.0kg)

DIMENSION 600mm (W) 600mm (D) 850mm (H)

Whites, Coloureds, Synthetic, Delicate, Wool, Hand Wash

Rinse+Spin, Spin, Pump

OPTION Bio, Rinse +, Eco, Pre Wash

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 7items 10items

POWER AUTO OFF Adopted

CHILD LOCK Adopted

AUTO RESTART Adopted

WD(M)-8070F(H)/1070(5)F(H)

67kg

190W

ELECTRICITY

CONSUMPTION

WASH CAPACITY

WASH PROGRAM

REVOLUTION

SPEED

63kg

150W

WD(M)-8070F(4)(H)B/1070(5)F(H)B/1170(5)F(H)B
WD(M)-1270(5)F(H)B/1370(5)F(H)B
WD(M)-1074(6)F(H)B/1174(6)F(H)B
WD(M)-1274(6)F(H)B/1374(6)F(H)B
WD-8078FHB/1078FHB
WM-1171(6)FHB
WM-1371(6)FHB
WD-1271FB

Jumbo drum

LG’s jumbo drum can wash about 40% more per load than
conventional washing machine. A bigger drum improves the
wash performance.

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 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. It will be the same when the machine
unplugged and is plugged in again.

2. FEATURES & TECHNICAL EXPLANATION

4

2-1.FEATURES

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 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

DETERMINA TION

EFFECT

3. PARTS IDENTIFICATION

6

Hot/Cold (2EA)

Cold (1EA)

Wrench

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.

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 O K or NOT.

ST ANDARD INSTALLA TION

The appliance should be installed as follows.

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 counter­clockwise.

4. INSTALLATION

7

1

High

Low

REMOVE

THE TRANSIT BOLTS

INSTALL THE APPLIANCE ON

FLAT AND FIRM SURFACE

ADJUST THE

HORIZONTAL

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 OPERA TION

9

Connect the power plug to In case of Coloureds program.
the outlet.

Connect the inlet hose.

Preparation for Press the power button. Press

the

Start/Pause

washing. button.

Press the button TEMP Check if the drum rotates Check if water is supplied

and the present temperature clockwise and through the detergent
will be displayed. counterclockwise. dispenser.

Power off and then power on.
Check if the door can be
opened after door lock lamp

turns off.

Turn off Spin and Temp 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

2

Water temperature selector

Press the button to select water temperature.
The water temperature

[40 C 50 C 60 C Cold 30 C] can be

selected in Coloreds, or Synthetic.
95 C is selected for Whites only.
By pressing the button while operating the washer,
the present temperature is displayed.

Rinse hold

If you desire to leave fabrics in the machine without spinning after rinse to
prevent them wrinkling, you may select rinse hold by pressing the spin
button.
If you want to drain and spin, when Rinse Hold function is proceed, Press
the Start/Pause button to cancel the Rinse Hold function and select spin
speed or program. Press the Start/Pause button again to start program.
If you want to drain only, select the no spin or pump program.
If lamp turns on, that function has been selected.

Option

Bio

If you want to elimenate 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 Whites, Coloureds and

Synthetic.]

Rinse

+

If you wish to rinse more, the

Rinse+option will remove any

trace of detergents.

Eco

By selecting Eco, the water

temperature is reduced and

washing time is lengthened.

So you can economize in your

consumption of energy.

[You can select Eco when

temperature is higher than 60 C

in Whites, Coloureds and

Synthetic.]

Pre Wash

If the laundry is heavily soiled,

“Pre Wash” course is effective.

Pre Wash is available in

Coloureds, Whites and Synthetic

Program.

Child - lock

Child Lock system can be set and canceled by pressing
both [Temp.] and [Time Delay ] button simultaneously.
Once Child Lock is set, all button are inoperable.
Child Lock system can be set anytime even during
Power-off and operation.
It is automatically cancelled when an operational error
occur.

11

LED display

It displays the remaining time (Hour : Minute ) to
finish.
In case of abnormal operation, error indications are
displayed.

( )

See troubleshooting guide.

Wash program selector

9 programs can be set depending on the type of
the laundry.
By rotating the dial, [ Coloureds Synthetic
Delicate Wool Hand Wash Rinse + Spin

Spin Pump Whites ] can be selected.

(The opposite order 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.

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.

Rapid

If you press the Rapid button in Whites or
Coloureds program, Rapid function is selected.
Rapid function reduces the whole time including
the Washing and Rinsing time.

Power button

Press the button to turn power
on and off.
Press the button to cancel the
delay finish.

12

6. WIRING DIAGRAM

(option)

GN/YL

■ WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B
WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B

WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB

■ WD-8070F(H), WD-1070(5)F(H)

❋

Pre Wash : If the laundry is heavily soiled, “Pre Wash” course is effective. Pre Wash is available in Coloureds, Whites 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 elimenate protein stains (milk, blood, chocolate...), you may select Bio function by pressing the option button.

❋

You can select Bio function and Eco function when temperature is higher than

60˚C

in Whites, Coloureds and Synthetic.

13

7. PROGRAM CHART