LG WD-8054, WD-6550F, WD-1253F, WD-1050F, WD-1055F User Manual

WASHING MACHINE

SERVICE MANUAL

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

MODEL : WD-6550F(B) / WD-8050F(H)(B)

WD-1050F(H)(B) / WD-1055F(H)(B)
WD-1253F(H)(B) / WD-1255F(H)(B)
WD-1054(6)F(H)B / WD-1254(6)F(H)B
WD-8054F(H)B

CAUTION

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

MAY. 2001 PRINTED IN KOREA

P/No.:3828ER3008C

CONTENTS

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

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

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

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

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

6. WIRING DIAGRAM .....................................................................................................................14

7. PROGRAM CHART .....................................................................................................................15

8. TROUBLESHOOTING.................................................................................................................16

8-1.BEFORE PERFORMING SERVICE ....................................................................................16

8-2.TEST MODE ........................................................................................................................16

8-3.HOW TO KNOW THE WATER LEVEL FREQUENCY.........................................................17

8-4. ERROR DISPLAY ...............................................................................................................18

9. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................22

9-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION ...........................................22

9-2. FAULT DIAGNOSIS AND TROUBLESHOOTING ..............................................................25

10. DISASSEMBLY INSTRUCTIONS .............................................................................................35

11. EXPLODED VIEW AND PART LIST ..........................................................................................43

11-1. THE EXPLODED VIEW OF CABINET ASSEMBLY..........................................................43

11-2. THE EXPLODED VIEW OF CONTROL PANEL & DISPENSER ASSEMBLY..................45

11-3. THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY ...................................................46

APPENDIX (Replacement parts list) .......................................................................................... 48

2

3

1. SPECIFICATION

ITEM

WD-1050F(H)B/WD-1055F(H)B
WD-1253F(H)(B)/WD-1255F(H)(B)
WD-6550FB/WD-8050(4)F(H)B
WD-1054F(H)B/WD-1254(6)F(H)B

63kg

150W

67kg

190W

7 item

10 item

220V - 240V~, 50Hz

300W

32W

2000W

45 rpm

0.3-10kgf/cm

2

(30-1000kPa)

Electronic

7.0kg

Synthetic (4.0), Delicate (3.0kg), Wool (2.0kg)

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

Super, Normal, Hold

Bi-Metal type

9 steps (by sensor)

From 3 hours to 19 hours

Adapted

Adapted

Adapted

Adapted

Adapted

Adapted

Adapted

Adapted

Normal

for Australia

WD-6550F(B)

WD-8050F(H)(B)/WD-8054F(H)B

WD-1050(5)F(H)(B)/1054(6)F(H)B

WD-1253(5)F(H)(B)/1254(6)F(H)B

400/500/650 rpm

400/600/800 rpm

400/600/800/1000 rpm

400/600/800/1000/1200 rpm

Coloreds, Whites, Synthetic, Delicate, Wool

Coloreds, Favourite, Heating, Synthetic, Wool

ELECTRICITY

CONSUMPTION

REVOLUTION

SPEED

OPERATION WATER PRESSURE

CONTROL TYPE

WASH CAPACITY

DIMENSION

WASH PROGRAM

RINSE

DOOR SWITCH TYPE

WATER LEVEL

RESERVATION

SENSING OF THE LAUNDRY AMOUNT

FUZY LOGIC

DISPLAY OF THE REMAINING TIME

ERROR DIAGNOSIS

POWER AUTO OFF

CHILD LOCK

AUTO RESTART

ECO

RAPID

POWER SUPPLY

PRODUCT WEIGHT

WASHING

SPIN (800rpm)

DRAIN MOTOR

WASH HEATOR

WASH

SPIN

WD-6550F / WD-8050F(H)
WD-1050F(H) / WD-1055F(H)

■ Jumbo drum

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 is
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

DETERMINATION

EFFECT

3. PARTS IDENTIFICATION

6

Inlet hose

Wrench (1EA)

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

* Option : Cold - 1EA

Cold/Hot - 2EA

󱀊 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.

■ STANDARD INSTALLATION

The appliance should be installed as follows.

󳢯 Remove the transit bolts 󳢯 Turn the adjustable feet to

(4EA:①) with supplied wrench. set the appliance horizontally.

󳢯 Keep the transit bolts and

wrench for future use.

󳢯 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

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 OPERATION

9

󳢯Connect the power plug to 󳢯In case of Coloreds 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 counter- through the detergent
will be displayed. clockwise. dispenser.

·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

■ WD-1050(5)F(H)(B) / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

60

.

LED display

󳢯Display the 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.
󳢯The water temperature

[40󰿽C 󳥕 60󰿽C 󳥕 cold 󳥕 (30󰿽C)] can be selected in
Coloreds, or Synthetic.

󳢯95󰿽C is selected for Whites 󳛔Heating󳛕only.
󳢯By pressing the button while operating the washer,

the present temperature is displayed.

For manual wash, rinse, and spin speed

󳢯Use these buttons to change wash/ rinse/spin.
󳢯When lamp is off, no selection has been made.
󳢯Prewash is available for Coloreds, Whites,

and Synthetic.

󳛔Coloreds, Heating, and Synthetic󳛕

Door lock lamp

󳢯It shows whether the

door can be opened or
not.

󳢯when the lamp is on,

the door can’t be

opened.

Error display.

󳢯The display blinks if there is

an error.

󳢯󳢯

no inlet : Trouble with

water supply.

󳢯󳢯

imbalance : The laundry is

tilted to one
side.

󳢯󳢯

no drain : If the drain pump

filter is clogged.

Rinse hold

󳢯If you desire to leave fabrics in the machine

without spinning after rinse to prevent wrinkling,
you may select rinse Hold by pressing the
Rinse button.

󳢯To drain and spin, press the Rinse button to

turn off the rinse hold lamp.

,, ,,,,

ReferRefer

14

11

: for Australia

Wash program selector

󳢯5 programs can be set depending on the type of the

laundry.

󳢯If the power button is pressed.

Coloreds program is automatically set.

󳢯By pressing the button, [ Coloreds 󳥕 Whites󳥕

Synthetic 󳥕 Delicate 󳥕 Wool ] can be selected.

󳛔Coloreds 󳥕Favourite 󳥕Heating 󳥕Synthetic 󳥕󳛕

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, [3:00 ] is displayed,

A maximum delay of [19:00] hours can be set.

󳢯Each press advances time delay by the hour.
󳢯Use [Power] button to cancel [Time Delay].

Eco/Rapid

󳢯If you press the Eco/Rapid button in White 󳛔Heating󳛕

program, Eco function is selected. Eco function gives
you almost the same washing effect as that in 95󰿽C
with less energy consumption.

󳢯If you press 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

󳢯Child Lock system can be

set and canceled by pressing
both [Temp] and [Eco/Rapid ]
button simultaneously.

󳢯Once Child Lock is set,

all button are inoperable.

󳢯Child Lock system can be

set anytime even during
Power-off, on pause and
operation.

󳢯It is automatically cancelled

when an operational error
occur, and when the cycles
ends.

Power button

󳢯Press the button to

turn power on and
off.

.

Cold

Fuzzy Logic & Quiet

For manual wash, rinse, and spin speed

󳢯Use these buttons to change wash, rinse, spin.
󳢯When lamp is off, no selection has been made.
󳢯Prewash is available for Coloreds, Whites, and

Synthetic.

Water temperature selector

• Press the button to select water temperature.

• The water temperature [40˚C 󳥕 60˚C 󳥕 Cold]

can be selected in Coloreds, or Synthetic
program.

• 95˚C is selected for Whites only.

Door lock lamp

󳢯It shows whether the

door can be opened or
not.

󳢯when the lamp is on,

the door can’t be
opened.

Error display.

󳢯The display blinks if there is an error.

󳢯󳢯

no inlet : Trouble with water supply.

󳢯󳢯

imbalance : The laundry is tilted to one side.

󳢯󳢯

no drain : If the drain pump filter is clogged.

Rinse hold

󳢯If 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.

󳢯To drain and spin, press the Rinse button to

turn off the rinse Hold lamp.

ReferRefer

14

12

■ WD-6550F(B)/WD-8050(4)F(H)(B)

Wash program selector

󳢯5 programs can be set depending on the type of

the laundry.

󳢯If the power button is pressed.

Coloreds program is automatically set.

󳢯By pressing the button, [ Coloreds 󳥕 Whites󳥕

Synthetic󳥕 Delicate󳥕 Wool ] can be selected.

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.

Eco

󳢯If you press the Eco/Rapid button in White

<Heating> program, Eco function is selected.
Eco function gives you almost the same
washing effect as that in 95。C with less
energy consumption.

Rapid

󳢯If you press 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

󳢯Child Lock system can be

set and canceled by

pressing both [Eco] and

[Rapid] button

simultaneously.
󳢯Once Child Lock is set, all

button are inoperable.
󳢯Child Lock system can be

set anytime even during

Power-off, on pause and

operation.
󳢯It is automatically cancelled

when an operational error

occur, and when the cycles

ends.

Power button

󳢯Press the button

to turn power on
and off.

13

14

6. WIRING DIAGRAM

GN/YL(GN)

GN/YL(GN)

■ WD-6550FB / 8050(4)F(H)B / 1050(5)F(H)B / 1253(5)F(H)(B) / 1054(6)F(H)B / 1254(6)F(H)B

(option)

■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

7. PROGRAM CHART

15

16

8. TROUBLESHOOTING

8-1. 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.

8-2. QC TEST MODE.

① Pressing RINSE, and SPIN button simultaneously.
② Power supply ON with pressing upper two button. then buzzer sound twice.
③ Press the START/PAUSE button as follows.

󳛪Press the START/PAUSE button more 4 times until stop spinning󳛫

Pressing number of

［START/PAUSE］button

Checking Point Display Status

None All lamps turn on

1 time Clockwise spin (right) Motor rpm (About 45)

2 times Low speed spin Motor rpm (About 63~67)

3 times High speed spin Motor rpm (About 114~117)

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)

Hot inlet valve in case of hot water fill

6 times Inlet valve for main-wash operation Water level frequency (25~65)

7 times Counterclockwise spin (left) Motor rpm (About 45)

8 times

A Heater is in operation for 3 sec.

Water Temperature

9 times Draining pump operation Water level frequency

10 times

Auto off operation

■ WD-1050(5)F(H)(B) / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

17

8-3. HOW TO KNOW THE WATER LEVEL FREQUENCY

■

WD-1050(5)F(H)(B)/WD-1253(5)F(H)(B) / WD-1054F(H)B / WD-1254(6)F(H)B

󳢬 Press the

WASH and RINSE button simultaneously.

ex) 241 : Water level frequency = 241 10-1

= 24.1

The digits means water level frequency (10

-1

㎑

)

Times of press

Checking Point

None

1 time

2 times

3 times

4 times

5 times (FOR WD-****FH)

6 times

7 times

8 times

9 times

10 times

All lamps turn on

Counterclockwise spin

Low speed Spin

High speed Spin

Inlet valve for pre-wash operation (Cold)

Inlet valve for main-wash operation (Hot)

Inlet valve for main-wash operation (Cold)

Clockwise spin

The Heater is in operation for 3 sec.

Draining pump operation

Auto off operation

■ WD-6550F(B)/WD-8050(4)F(H)(B)

18

ERROR SYMPTOM

CCAAUUSSEE

1 WATER 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.

2 IMBALANCE 󳥄 The appliance is tilted.

ERROR 󳥄 Laundry is gathered to one side.

󳥄 Non distributable things are put into the drum.

3 DRAIN ERROR 󳥄 Water has not drained enough within 5 min.

4 OVERFLOW 󳥄 Water is automatically being pumped out because too much

ERROR water is in the tub.

5

SENSOR PRESSURE

S/W ERROR

󳥄 The sensor pressure switch is out of order.

6 DOOR OPEN 󳥄 The

󳛪Start/Pause󳛫

button is pressed with the door open.

ERROR 󳥄 The door switch is out of order.

7 HEATING 󳥄 The thermistor is out of order.

ERROR

8 SENSOR 󳥄 The connector (5-pin, male, white) in the wire harness is not

ERROR connected to the connector (5-pin, female) of Hall Sensor in

the MOTOR.

󳢹’ Reconnect or repair the contact in the connector.

8-4. ERROR DISPLAY.

■ WD-1050(5)F(H)(B) / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B
󳢯 If you press the 󳛪Start/Pause󳛫button when an error in displayed, any error except

PE will disappear

and the machine will change into pause status.

󳢯In case of 󳛐

PE󳛑󳛐󳛑󳛐󳛑if the error is not resolved within 20 sec. In the case of other errors,

if the error is not resolved within 4 min. power will be turned off automatically and the error code will
blink. But in case of 󳛐FE󳛑, power will not be turned off.

imbalance

no drain

no inlet

ERROR SYMPTOM CAUSE

8

9

10

• The electric contact between the connectors
(5-pin, male in the wire harness and 5-pin female in the hall sensor)
is bad or unstable.
󳢹 Reconnect or repair the contact in the connector.

• The connector (6-pin, male, natural) in the wire harness is not
connected to the connector (6-pin, female, natural) of PWB assembly
(Main) or the electric contact of connectors is bad/unstable.
󳢹 Reconnect or repair the contact in the connector.

• The electric contact between the connectors 󳛪6-pin, male in the wire
harness and 6-pin female in the controller (Main)󳛫is bad or unstable.
󳢹 Reconnect or repair the contact in the connector.

• The wire harness between hall sensor in the MOTOR and PWB
assembly (Main) is cut (open circuited).
󳢹 Repair/replace the damaged WIRE HARNESS.

• The hall sensor is out of order/defective.
󳢹 Replace the Motor.

• The controller (Main) is out of order/defective.
󳢹 Replace the PWB assembly (Main).

• PWB assembly (Main) is out of order.
󳢹 Replace the PWB assembly (Main).

• Winding in the MOTOR is short-circuited.
󳢹 Replace the MOTOR.

• The connector (3-pin, male, white) in the wire harness is not connected
to the connector (3-pin, female, white) of MOTOR.
󳢹 Reconnect or repair the connector.

• The electric contact between the connectors 󳛪3-pin, male, white in the
wire harness and 6-pin, female, white in the PWB assembly (Main)󳛫is
bad or unstable.
󳢹 Reconnect or repair the contact in the connector.

• The wire harness between the MOTOR and PWB assembly (Main) is
cut (open circuited).
󳢹 Repair the damaged (open-circuited) WIRE HARNESS.

• The hall sensor is out of order/defective.
󳢹 Replace the PWB assembly (Main).

SENSOR

ERROR

CURRENT

ERROR

LOCK

ERROR

19

20

ERROR SYMPTOM CAUSE

1 WATER INLET

ERROR

2 IMBALANCE

ERROR

3 DRAIN ERROR

4 OVERFLOW

ERROR

5

SENSOR PRESSURE

S/W ERROR

6 DOOR OPEN

ERROR

7 THERMISTOR

ERROR

󳥄Water has not reached to the pre-set level within 4

min. since inlet valve operated, or water has not

reached to the normal level within 25 min.

󳥄 The appliance is tilted.

󳥄 Laundry is gathered 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

Start/Pause

button is pressed with the door

open.

󳥄 The door switch is out of order.

󳥄 The thermistor is out of order.

■ WD-6550F(B)/WD-8050(4)F(H)(B)

󳢯 If you press the ~Start/Pause₩button when an error in displayed, any error except S/W ERROR will

disappear and the machine will change into pause status.

󳢯In case of d S/W ERROR e, d THERMISTER ERROR e, d DOOR OPEN ERROR e, if the error is not

resolved within 20 sec. In the case of other errors, if the error is not resolved within 4 min. power will be
turned off automatically and the error code will blink. But in case of d OVER FLOW ERROR e, power
will not be turned off.d

imbalance

no drain

no inlet

Pre

Main

Super

Normal

Hold

Fuzzy Logic & Quiet

Door Lock

Cold

40

60

95

Fuzzy Logic & Quiet

ERROR SYMPTOM CAUSE

8 SENSOR

ERROR

9 CURRENT

ERROR

10 LOCK

ERROR

• The electric contact between the connectors
(5-pin, male in the wire harness and 5-pin female in the hall
sensor) is bad or unstable.
󳢹 Reconnect or repair the contact in the connector.

• The connector (6-pin, male, natural) in the wire harness is not
connected to the connector (6-pin, female, natural) of PWB
assembly (Main) or the electric contact of connectors is
bad/unstable.
󳢹 Reconnect or repair the contact in the connector.

• The electric contact between the connectors 󳛪6-pin, male in the
wire harness and 6-pin female in the controller (Main)󳛫is bad or
unstable.
󳢹 Reconnect or repair the contact in the connector.

• The wire harness between hall sensor in the MOTOR and PWB
assembly (Main) is cut (open circuited).
󳢹 Repair/replace the damaged WIRE HARNESS.

• The hall sensor is out of order/defective.
󳢹 Replace the motor

• The controller (Main) is out of order/defective.
󳢹 Replace the PWB assembly (Main)

• PWB assembly (Main) is out of order.
󳢹 Replace the PWB assembly (Main).

• Winding in the MOTOR is short-circuited.
󳢹 Replace the motor

• The connector (3-pin, male, white) in the wire harness is not
connected to the connector (3-pin, female, white) of MOTOR.
󳢹 Reconnect or repair the connector.

• The electric contact between the connectors 󳛪3-pin, male,
white in the wire harness and 6-pin, female, white in the PWB
assembly (Main)󳛫is bad or unstable.
󳢹 Reconnect or repair the contact in the connector.

• The wire harness between the MOTOR and PWB assembly
(Main) is cut (open circuited).
󳢹 Repair the damaged (open-circuited) WIRE HARNESS.

• The hall sensor is out of order/defective.
󳢹 Replace the PWB assembly (Main).

400 600 800

Fuzzy Logic & Quiet

Cold

40

60

95

400 600 800

Fuzzy Logic & Quiet

21

Super

Normal

Hold

400 600 800

Fuzzy Logic & Quiet

9-1.DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION

SYMPTOM GUIDE FOR SERVICE CALL

NO POWER

Water inlet trouble

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 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

22

9. ERROR DIAGNOSIS AND CHECK LIST

no inlet

YES

NO

YES

YES

no inlet

NO

NO

NO

YES

23

SYMPTOM GUIDE FOR SERVICE CALL

°DOOR OPEN ERROR

Refer to
8-4 ERROR DISPLAY

°Drain trouble

Did you press the Start/Pause button 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 pins, coins etc.?

Is the drain hose frozen with water, kinked,
or crushed?

Visit to check

There are operating noise from drain pump

when operated spinning.

Close the door

Clean up
the filter.

NO

YES

no drain

YES

NO

NO

YES

no drain

24

SYMPTOM GUIDE FOR SERVICE CALL

°Suds overflow from the

appliance.

(In this condition, wash and

spin do not operate normally)

°No effect of softener

Is low-sudsing detergent for the drum
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

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 function such as

drain, water input, and pause will operate without rotating the drum.

°OVERFLOW ERROR
°PRESSURE S/W ERROR
°THERMISTOR ERROR

Refer to
8-4. ERROR DISPLAY

■ WD-1050(5)F(H)(B)/WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

■ WD-6550F(B)/WD-8050(4)F(H)(B)

YES

YES

YES

YES

YES

25

9-2. 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. Voltage between each terminal is 220-240V while applying an electric current.

CAUTION

NO

NO

NO

YES

YES

YES

YES

NO

NO

YES

(1)

(2)

(5)

(6)

PWB ASSEMBLY (MAIN)

PWB ASSEMBLY (MAIN)

Check the fuse?

Replace PWB assembly
(Main).

Replace PWB assembly
(Main).

Reconnect the PWB
assembly (Display).

Reconnect the PWB
assembly (Display).

When measuring the voltage of the outlet,
is the voltage AC 220-240V?

Is the LED (1) on?

When measuring the voltage of natural
connector (5,6) is the voltage DC 10~16.5V?

Is connector (2) disconnected or

disassembled?

Is wire of the PWB assembly (Display)
disconnected?

Replace PWB assembly (Display).

NO POWER

■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

26

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. Voltage between each terminal is AC 220-240V while applying an electric current.
(except secondary part of the transformer and sensors)

2

1

3

NO

NO

YES

YES

YES

NO

NO

YES

PWB ASSEMBLY (POWER)

Check the fuse?

Replace PWB assembly
(Power).

Reconnect and repair
connector.

Replace PWB assembly
(Main).

When measuring the voltage of the outlet,
is the voltage AC 220-240V?

When measuring the voltage of blue
connector of the PWB assembly (Power),
is the voltage AC 220-240V?

Is ③ connector disconnected or

or is the contact bad or cut?

Is wire of the PWB assembly (Display)
disconnected?

Replace PWB assembly (Display).

NO POWER

CAUTION

■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

27

NO

YES

NO

NO

YES

NO

YES

YES

NO

NO

YES

YES

YES

NO

NO

NO

YES

Wiring diagram

option (HOT)

option (HOT)

MAX

Is the water supply shut-off?

Is the tap opened?

When you press both Wash button and Rinse
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

Ω

?

Check the voltage between each terminal 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

(Main).

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

28

YES

YES

YES

NO

NO

NO

NO

NO

YES

YES

YES

YES

Wiring diagram

option (HOT)

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 connectly connected to the
terminals of inlet valve?

Is softener put in the correct compartment of
drawer?

Is the softener cap clogged?

29

Wash

Rinse

AC 220-240V

NO

NO

YES

PWB ASSEMBLY (MAIN)

Replace the sensor
(pressure).

Replace the PWB
assembly (Main).

When

pressing WASH and RINSE at the same time
after draining, is the water level frequency 252 or
more?
When pressing

WASH, RINSE

buttons at the
same time while wash, is the water level
frequency between 220 - 240?

Checking voltage between two pins as press
the power button is the voltage 220 - 240V~?

HEATING WITHOUT WATER

220-240V

YES

NO

PWB ASSEMBLY (POWER)

Clean the air chamber
and hose.
Replace the sensor.
(pressure)

Are there any problem at air chamber, the hose
or pressure sensor?

Replace the PWB assembly.

(POWER or MAIN)

■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

30

YES

YES

NO

NO

YES

NO

YES

NO

NO

2

1

(5)

(6)

PWB ASSEMBLY (MAIN)

Repair drain hose.

Remove foreign material.

Reconnect or repair the
connector.

Replace the pump
assembly.

Replace the PWB
assembly (Main).

Is the drain hose twisted or frozen?

Is the impeller of the drain pump clogged?

Is the connector disconnected, disassembled?

Is the coil of drain pump cut-off?
(resistance of coil is 90~160Ω)

When checking voltage between connectors
(󳡉, 󳡊) on spinning, is the voltage 220 - 240V~
as the figure?

DRAIN MALFUNCTIONING

■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

1

2

PWB ASSEMBLY (MAIN)

YES

YES

NO

NO

YES

NO

YES

NO

NO

Repair drain hose.

Remove foreign material.

Reconnect or repair the
connector.

Replace the pump
assembly.

Replace the PWB
assembly (Main).

Is the drain hose kinked or frozen?

Is the filter of drain pump clogged?

Is the connector disconnected or is the contact
bad?

Is the coil of drain pump cut-off?
(resistance of coil is 90~160Ω)

When checking voltage between two
receptacles as shown (󳡉, 󳡊) on spinning,
is the voltage 220-240V ?

■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

31

When checking the voltage between
connector the PWB assembly (Main) during
whites washing ,Is the voltage
220 - 240V ?

Replace the PWB
assembly (Main).

YES

NO

After power off and the heater terminal is
disconnected, is the resistance 10 to 30 ?

Replace the heater
assembly.

NO

After power off,is the resistance of wire
(RED-YELLOW) connectors between
10 to 30 ?

Normal.

NO

YES

RED

YELLOW

1 2

43

~

220 - 240V~

PWB ASSWMBLY (MAIN)

■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

AC 220-240V

NO

NO

YES

NO

YES

Yellow

Red

Replace the PWB
assembly (Power).

Normal.

Replace the heater
assembly.

When checking the voltage between two
receptacles of the PWB assembly (Power) during
washing.
Is the voltage AC 220-240V?

After power off, is the resistance between yellow
wire and red wire of
connector 10 to 30Ω?

After power off, is the resistance of heater

10 to 30Ω?

■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

WASH HEATER TROUBLE

32

■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

NO

YES

YES

12

4 3

(1)

Replace the thermistor.
(6322FR2046B)

Press the thermistor
tightly to the rubber.

When disconnect the connector (1) on the
PWB assembly (Main) is the resistance of the
natural connectors 󳛪( Blue/White, Violet),
 (Blue, White)󳛫between 2.5

kΩ

to 180

kΩ

(105℃~0℃)?

When checking thermistor on the tub cover,
is the thermistor loosened above 2mm from
the rubber?

HEATING CONTINUOUSLY ABOVE

THE SETTING WATER TEMPERATURE

1

NO

YES

YES

Replace the thermistor.
(6322FR2046B)

Get the thermistor back
to the rubber.

Is the resistance between two receptacles with
BL/WH wires parted from PWB assembly

2.5

kΩ

to 180kΩ(105℃~ 0℃)?

When checking thermistor on the tub cover,
is the thermistor gotten more than 2 mm out of the
rubber?

33

Wash

Rinse

Rinse

Spin

3

1

2

NO

YES

YES

YES

NO

NO

NO

YES

(1)

SPIN TROUBLE

Check the sensor
(Pressure) or hose
(Sensor).
If the problem is on the
sensor or the hose, replace
the sensor or the hose.

Normal.

Correct the connector.

Replace the motor
assembly.
(4681FR1241B)

Check on the spinning, is the frequency of the
water level 248 or more. The frequency can be
checked by pressing the WASH and RINSE buttons
at the same time on the program.

When pressing RINSE, SPIN, and POWER buttons
at the same time after power off, press the
START/PAUSE button 2 times, is the drum
spinning at low speed?

Is it disconnected, or disassembled?

󳛪 Red : 3-pin (1) 󳛫

Check the motor connector. Is the resistance of
the terminal same as the figure?

MOTOR TERMINAL

Resistance of terminal:

   About 6.5

Replace the PWB assembly (Main).



■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

34

3

2

1

1

10

123 4 5 6 7 8 9

10

5

4

YES

YES

YES

NO

NO

NO

YES

Rinse

Spin

Normal.

Reconnect or repair it.

Replace the motor
assembly.
(4681FR1194A)

Check the sensor (Pressure) or hose (Sensor).
If the problem is on the sensor or the hose,
replace the sensor or the hose.

Press ［Power］button with both ［Rinse］and ［Spin］
buttons pressed after power off. Press ［Start/Pause］
button 2 times. Does the drum rotate at low spin
speed?

Is it disconnected or badly contacted?

~ Natural: 3-pin (①), Red : 4-pin (②), Blue: 2-pin (③),

Yellow:2-pin (④) ₩

Check the motor connector, Is the resistance between
the terminal in figure the same as below?
Resistance between terminals

① ~ ⑤ : 0.5~1.0Ω
⑤ ~ ⑩ : 1.5~2.5Ω

Be sure to unplug the machine before measuring.

MOTOR TERMINAL

Replace the PWB assembly (Main).

■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

35

󳢬 Be sure to unplug the machine out of the outlet before disassembling and repairing the parts.

10. DISASSEMBLY INSTRUCTIONS

①①

Unscrew 2 screws on the back of the top plate.

②②

Pull the top plate backward and upward as shown.

①①

Disconnect the PWB assembly (Display) connector.

②②

Pull out the drawer and unscrew 3 screws.

③③

Push 2 upper hooks down and pull the control panel.

①①

Disconnect the PWB assembly (Display) from the

control panel by unscrewing 9 screws.

Hook

Hook

CONTROL PANEL

PLATE ASSEMBLY (TOP) PLATE ASSEMBLY (TOP)

PANEL ASSEMBLY (CONTROL)

PWB ASSEMBLY (DISPLAY)

36

①①

Disassemble the top plate assembly.

②②

Pull out the drawer slightly upward.

③③

Unscrew 2 screws.

①①

Disassemble hose clamps and hoses.

②②

Disassemble ventilation bellows and water inlet

bellows from tub.

①①

Disassemble the top plate assembly.

②②

Unscrew 2 screws.

③③

Disconnect connector from the wiring.

DISPENSER ASSEMBLY

PWB ASSEMBLY (POWER)

DISPENSOR ASSEMBLY

Option (HOT)

DRAWER

WD-6550F/WD-8050F(H)

37

① Disconnect the wiring connector.
② Unscrew 2 screws from the back.
󳢮When reconnecting the connector

󳛪WD-1253FH(B)/1255FH(B)/1254(6)FHB/

WD-1054(6)FHB/ 1050FH(B)/1055FH(B)/8050(4)FH(B)󳛫

① Remove the back cover.
② Unscrew 2 screws.
③ Pull the PWB assembly (Main) as shown.

① The Top cover is removed.
② Unscrew 2 screws.
③ Pull the PWB assembly (Main) as shown.

1

2

3

INLET VALVE

PWB ASSEMBLY (MAIN)

VALVE#1 (MAIN) White/Black - Black
VALVE#2 (PRE) Gray/ White - Black

VALVE#3

(HOT)

Blue/Red-Black

■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B

■

WD-6550F / WD-8050F(H) / WD-1050(5)F(H)

38

①①

Open the door completely.

②②

Remove the two screws from the hinge.

①①

Take apart the cabinet gasket clamp.

②②

Unscrew 2 screws from the cabinet cover.

③③

Open the lower cover cap and unscrew 1 screw inside.

④④

Take apart the lower cover.

①①

Unscrew all the screws on the upper and lower sides of

the cabinet cover.

①①

Take apart the tub gasket clamp.

②②

Make sure that the drain hole of the gasket is put

beneath when reassembling the gasket.

※Refer to the arrow mark on the tub cover.

GASKET ASSEMBLY

DOOR

39

①①

Remove the back cover.

②②

Take off the belt turning the pulley.

③③

Unscrew the bolt to pull out the pulley.

①①

Unscrew 2 screws from the bracket.

②②

Push the motor in the arrow direction for
disassembling.

③③

When reassembling the motor, make sure that motor
mounting bushings are not taken off from the bracket.

①①

Pull out the hinge, pressing its snap.

②②

Do not use the pulled out hinge again. It may be taken
off during operation.

1

2

3

Hinge,
Damper

Damper

PULLEY, MOTOR, DAMPER

(PULLEY)

(MOTOR)

(DAMPER)

Open the lower cover cap ( 󳡉󳡉)
by using coin.Turn the drain plug
( 󳡊󳡊) to pull out the hose.

Unplug the drain plug (󳡊󳡊) , then
the water flows out.
At this time use a vessel
to prevent water flowing on the
floor. If the water does not flow any
more,turn the pump filter (󳡋󳡋)
open to the left.

Take out any foreign material
from the pump filter ( 󳡋󳡋).
After cleaning, turn the pump
filter (󳡋󳡋) clockwise and insert
the drain plug ( 󳡊󳡊) to the
original place. close the lower
cover cap.

󳥎

󳥎

Clean the drain pump filter

1

100

3

2

3

2

■ WD-6550F(B) / WD-8050F(H)(B) / WD-1050(5)F(H)(B) / WD-1253(5)F(H)(B)

①①

Remove the back cover.

②②

Take off the belt turning the pulley.

③③

Unscrew the bolt to pull out the pulley.

①①

Unscrew 2 screws from the bracket.

②②

Push the motor in the arrow direction for

disassembling.

③③

When reassembling the motor, make sure that motor

mounting rubbers are not taken off from the bracket.

①①

Pull out the hinge pressing its snap.

②②

Do not use the pulled out hinge again. It may be taken

off during operation.

1

2

3

Hinge,
Damper

Damper

PULLEY, MOTOR, DAMPER

(PULLEY)

(MOTOR)

(DAMPER)

Open the lower cover cap ( 󳡉 )
by using coin.

Unplug the drain plug (󳡊 ) , then
the water flows out,
At this time use a vessel
to prevent water flowing on the
floor. If the water does not flow any
more,turn the pump filter ( 󳡋 )
open to the left.

Take out any foreign material
from the pump filter ( 󳡋 ). After
cleaning, turn the pump filter(󳡋 )
clockwise and insert the
drain plug ( 󳡊 )to the original
place. close the lower cover cap.

󳥎

󳥎

Clean the drain pump filter

1

100

3

2

3

2

■ WD-1054(6)F(H)(B) / WD-1254(6)F(H)B / WD-8054F(H)B

40

Cap

(Remaining Hose)

Screw

Pump Outlet Hose

Tub Pump Bellows

41

①①

Remove pump outlet hose.

②②

Remove tub pump bellows.

③③

Remove cap (Remaining Hose.)

④④

Disconnect the wiring.

⑤⑤

Unscrew 3 screws

⑥⑥

Remove the pump.

①①

Unscrew 3 screws fixing the heater protecting cover.

②②

Loosen the M6 heater nut to pull out the heater.

①①

Loosen the M6 heater nuts to pull out the HEATER

ASSEMBLY.

When mounting the HEATER ASSMBLY be sure to
insert the HEART ASSEMBLY into the heater clip on
the bottom of the tub.

①①

Pull it out by holding the thermistor bracket.

󳢮 If it is pulled by the wire, it may be broken.
②②

When mounting the thermistor again, make sure that it

is got back tight to the rubber.

PUMP

HEATER

THERMISTOR

CAUTION

■ WD-1054(6)F(H)(B) / WD-1254(6)F(H)B / WD-8054F(H)B

■ WD-1054(6)F(H)(B) / WD-1254(6)F(H)B / WD-8054F(H)B

42

DOOR HINGE ASSEMBLY

SWITCH ASSEMBLY, DOOR LOCK

WHEN FOREIGN MATERIAL IS STUCK BETWEEN DRUM AND TUB

①①

Disassemble the door from the door hinge.

②②

Take apart the cabinet cover clamp and release the

gasket.

③③

Unscrew 2 screws on the door hinge.

④④

Press the door hinge arm to the inside of the cabinet

cover for disassembling.

①①

Take apart the cabinet cover clamp and release the

gasket.

②②

Unscrew 2 screws holding the door lock.

③③

Disconnect the door lock from the wiring connector.

①①

Remove the heater.

②②

Remove the foreign material (wire, coin and others) by

inserting a long bar through the hole.

11-1 THE EXPLODED VIEW OF CABINET ASSEMBLY

43

11 EXPLODED VIEW

A110

A101

A100

A430

A104

A102

A410

A200

A201

A220

A310 A300

A303

A133

A132

A440

A140

A130

A131

A141

A450

A460

A150

: Non-service part

: Service part

A273
A274

A271
A272

A270

HOT(ORANGE)

COLD(BLUE)

HOT(ORANGE)

COLD(BLUE)

A275
A276

A277

HOT(ORANGE)

COLD(BLUE)

■ WD-6550F(B) / WD-8050F(H)(B) / WD-1050(5)F(H)(B)/WD-1253(5)F(H)(B)

■ WD-1054(6)F(H)B / WD-1254(6)F(H)B / WD-8054F(H)B

A151

A103

A102
A104

A101

A100

A430

A450

A410
A200

A201

A220

A303

A133

A440

A130

A131

A141

A150

A310 A300

A273
A274

A271
A272

A275
A276

A277

A270

HOT (ORANGE)
COLD (BLUE)

HOT (ORANGE)

COLD (BLUE)

HOT (ORANGE)

COLD (BLUE)

: Service Part

: Non-Service Part

A110

44

11-2

THE EXPLODED VIEW OF CONTROL PANEL & DISPENSER
ASSEMBLY

45

F160

F170

F432

F430

F120

F220

F130

F300

F310

F110

F210

: Non-service part

: Service part

11-3 THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY

46

K221

K210

K220

K121

K100

K104

K105

K410

K150

K610

K343

K550

K540

K520

K531

K344 K340

K320

K310

K510

K141

K142

K110

K420

K411

K103

K135

K136

K101K131

K130

K131

K144

K140

K611

K102 K122

K530

K332

K330

: Non-service part
: Service part

F140

K125

■ WD-6550F(B) / WD-1050(5)F(H)(B)/WD-1253(5)F(H)(B) / WD-8050F(H)(B)

■ WD-8054F(H)B / WD-1054(6)F(H)B / WD-1254(6)F(H)B

K411

K100

K420

K110

K140

K510

K344

K340

K520

K540

K530

K550

K330

F140

K611

K610

K410

K105

K310

K320

K121

K210

K220

K136

K136

K135

K221

K122

K125

K130

K531

F441

K343

K131

K341

K143

K141

47