LG WD-1457RD User manual

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : WD-1457RD, WD-1458RD
CAUTION

SEP. 2006 PRINTED IN KOREA P/No.: MFL30 7471

CONTENTS
1. SPECIFICATION............................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4
3. PARTS IDENTIFICATION ............................................................................................................ 6
4. INSTALLATION............................................................................................................................. 7
. 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.
HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION ......13
7- .ERROR DISPLAY ................................................................................................................14
8. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................16
8-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION ...........................................16
8-2. FAULT DIAGNOSIS AND TROUBLE SHOOTING .............................................................19
9. DISASSEMBLY INSTRUCTIONS ...............................................................................................29
10. EXPLODED VIEW AND PARTS LIST .......................................................................................38
10-1. THE EXPLODED VIEW OF CABINET ASSEMBLY .........................................................38
10-2. THE EXPLODED VIEW OF CONTROL PANEL AND DISPENSER ASSEMBLY ............39
10-3. THE EXPLODED VIEW OF DRUM AND TUB ASSEMBLY .............................................40
10-4. THE EXPLODED VIEW OF DRYER.................................................................................41
2

ITEM
POWER SUPPLY 220-240V~, 0Hz
PRODUCT WEIGHT 66kg
WASHING 140W
SPIN 440W
DRAIN MOTOR 40W
STEAM HEATER 1100W
WASH HEATER 2100W
DRY HEATER 1 00W
WASH 0rpm
SPIN
No Spin/400/800/1000/1400
OPERATION WATER PRESSURE 0.3-0.8kgf/cm
2
(30-800kPa)
CONTROL TYPE Electronic
WASH CAPACITY 8kg
DRY CAPACITY 4kg
DIMENSION
600mm(W)x64 mm(D)x8 0mm(H)
WASH PROGRAM Cotton, Synthetic, Delicate, Hand Wash/Wool, Duvet, Quick30, Rinse+Spin, Refresh, Baby Care
OPTION Intensive, Pre Wash, Rinse+, Medic Rinse
DOOR SWITCH TYPE Bi-Metal type
WATER LEVEL 10 steps (by sensor)
RESERVATION From 3 hours to 19 hours
SENSING OF THE LAUNDRY AMOUNT Adapted
FUZZY LOGIC Adapted
DISPLAY OF THE REMAINING TIME Adapted
ERROR DIAGNOSIS 10 items
POWER AUTO OFF Adapted
CHILD LOCK Adapted
AUTO RESTART Adapted
TIME SAVE Adapted
3
1. SPECIFICATION
ELECTRICITY
CONSUMPTION
REVOLUTION
SPEED
WD-1457RD, WD-1458RD

2. FEATURES & TECHNICAL EXPLANATION
4
2-1.FEATURES
Direct Drive System
The advanced Brushless DC motor directly drives the drum without
belt and pulley.
Water Circulation
Spray detergent solution and water over the load over continu.
Clothes are soaked more quickly and thoroughly during wash cycle.
The detergent suds can be removed more easily by the water shower during
rinse cycle. The water circulation system uses both water and detergent more
efficiently.
Built-in Heater
Internal heater automatically heats the water to the best temperature on selected
cycles.
Child Lock
The Child lock prevents children from pressing any button to change the settings
during operation.
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.
Low noise speed control system
By sensing the amount of load and balance, it evenly distributes load to minimize
the spinning noise level.
Safety device (Aqua lock)
Aqua lock System is designed for detecting water leak during operation to
prevent water from spilling on the floor.
Steam Washing and Refresh
Steam Washing features upgraded washing performance with low energy
consumption. Refresh cycle reduces wrinkles from dry clothes.
Automatic Wash Load Detection
Automatically detects the load and optimizes the washing time.
추가선택, 예약,

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
FUZZY
LOGIC
laundry
amount
selected
washing
temperature
water
temperature
washing time
rinsing time
spin rhythm, time
the best
washing
performance
SENSING
PROCESSING DETERMINATION
EFFECT

Inlet hose(1EA) Option : Hot/Cold(2EA) Spanner
3. PARTS IDENTIFICATION
6
■ACCESSORIES
Drawer
❋ Option :
Safety Cover
(PLC Modem)
Cold Water Inlet
❋ Cold Only ❋ Hot/Cold
Cold Water Inlet
Hot Water Inlet

󱀊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 trouble shooting.
󱀍Decide service steps referring to disassembly instructions.
󱀎And 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 INSTALL THE APPLIANCE ADJUST THE
BOLTS ON FLAT AND FIRM SURFACE HORIZONTAL
󳢯Remove the transit bolts 󳢯Turn the leveling feet to
(4EA:①)with supplied spanner. set the appliance horizontally.
󳢯Keep the transit bolts and
spanner for future use.
󳢯Insert the provided 4 caps
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
2

■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 a fire.
·Avoid submerging the end of the hose.

󳞊TEST OPERATION
9
MAXMAX
󳢯Connect the power plug to
the outlet. 󳢯In case of Coloreds program.
󳢯Connect the inlet hose.
Preparation Press the POWER button. Press the Start/Pause
for button.
washing.
·Check if the drum rotates ·Check if water is supplied
clockwise and counterclockwise. through the detergent dispenser.
·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.
·Press the Rinse+Medic Rinse
button simultaneously and the
present temperature will be
displayed.
·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
. OPERATION
• Use this button to turn the
power On/Off.
• Rotate the Cycle selector
knob to select the cycle
designed for different
types of fabric and soil
levels.
• Use this button to Start/
Stop the washer.
• By pressing the Steam Wash
button, Steam Function is
selected, light on Steam
Wash button LED
• Allows the start of any cycle
to be delayed for 3~19
hours.
• Select a water temperature
based on the type of load you
are washing.
• To change the spin speed,
press the Spin Speed button
repeatedly to cycle through
available options.
Cycle Selector Time Delay
Power
Start/Pause Steam Wash Spin, Temp. Button

11
• Use this option to prevent unwanted
use of the washer. Press and hold
Crease Care and Medic Rinse button
for 3 seconds to lock/unlock control.
• When Child lock is set, CHILD LOCK
lights and all buttons are disabled
except the Power button. You can
lock the washer while it is operating.
• Intensive : 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.
• Pre Wash : Use this option for load that need pretreatment. Add 16 minutes pre wash and drain.
• Rinse+: If you wish to rinse more the Rinse+option will remove any trace of detergents.
• Medic Rinse : For high effectiveness or more purity in rinse operation you can choose Medic
Rinse option. It can be chosen in all course with the exception of Hand Wash/Wool,
Delicate, Quick 30, Duvet, Refresh.
󳢯Display the estimated remaining time (Hour : Minute)
to finish.
󳢯In case of abnormal operation, error indications are
displayed.
( )
󳢯See troubleshooting guide.
• Dry programs selected by rotating
dry knob.
• [Cupboard Dry - Very Dry - 30 - 60 -
120 - Low Temp. - Iron Dry can be
selected.] can be selected.
Child Lock
LED display
Dry knob
• Tub Clean course can be set by
pressing and holding Intensive and Pre
Wash button simultaneously.
• Tub Clean is special cycle to clean the
inside of the washer.
Tub Clean
Option Button

12
6. WIRING DIAGRAM / PROGRAM CHART
Drain
I
⁄
S
Heat
Steam
Wash
Drain
I
⁄
S
Drain
I
⁄
S
Drain
I
⁄
S
Drain
I
⁄
S
1234567891011121314151617181920212223242526272829
60 (”—) 60 180 120 (”—) 60 180 120 180 60 180 120 180 60 180 120 180 60 180 120 180 60 480 180 20 20
812
42
812
42
8
12
8
812
42
20
**Appro
Working
Time
(Minute)
26(23)
19
155
68
72
62
72
30
E
N
D
A
U
T
O
O
F
F
114(111)
84
Rinse
Spin
Drain
Spin
D
⁄
T
E tra &
Stain(4~6)
W
⁄
S
Rinse
3
W
⁄
S
Rinse
2
W
⁄
S
Rinse
Wash
1
W
⁄
S
Rinse
Wash
Pre Main
W
⁄
S
Wash
W
⁄
S
Baby Care
Wash
Spin
Duvet
Quick 30
Rinse+Spin
Refresh
Cotton
Synthetic
Delicate
Hand Wash
/Wool

13
7. TROUBLE SHOOTING
7-1.BEFORE SVC CHECKING
■Be careful of electric hock or di connecting the part while trouble hooting.
■Voltage of each terminal in 220-240V~ and DC while applying an electric current.
7-2.QC TEST MODE.
①①Pre ing Temp. and Steam Wa h button imultaneou ly.
②②Pre the Power button, while the above condition.
③③Pre the Start/Pau e button a follow .
Check Point Di play Statu
None Turn on all lamp and lock the door.
1 time Tumble clockwi e. rpm (42~50)
2 time Low peed Spin. rpm (55~65)
3 time High peed Spin. rpm (125~155)
4 time Inlet valve for prewa h turn on. Water level frequency (25~65)
5 time Inlet valve for main wa h turn on. Water level frequency (25~65)
6 time Inlet valve for hot water turn on. Water level frequency (25~65)
7 time Inlet valve for team turn on. Water level frequency (25~65)
8 time Inlet valve for bleach turn on. Water level frequency (25~65)
9 time Tumble counterclockwi e. rpm (42~50)
10 time
Heater turn on for 3 ec. Water temperature
11 time Circulation pump turn on. Water level frequency (25~65)
12 time
Drain pump turn on. Water level frequency (25~65)
13 time Water level Sen or for Steam
Water level frequency of TSG(0~255)
14 time Steam Heater turn on for 1.2 ec. TSG temperature
15 time Off -
Number of time the
Start/Pau e button i pre ed
7-4.HOW TO KNOW THE WATER LEVEL FREQUENCY
󳢬Pre the Temp. and Spin button imultaneou ly.
ex) 241 : Water level frequency = 241×10-1kHz
=24.1kHz
The digit mean water level frequency (10-1 kHz)

14
7- .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 de, de, deif 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 de, power will not be turned off.
ERROR SYMPTOM CAUSE
1
2
3
4
5
6
7
• Not reached to the water level(246)within 8
minutes after water supplied or not reached to
the preset water level within 2 minutes.
• Not fully drained within 10 minutes.
• Water is over flowing(over 8 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
11
• 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
• Water leaks
• The washer ecperienced a power failure
• 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.
15
LOCKED
MOTOR
ERROR
POWER
FAILURE
DRY
HEATOR
ERROR

16
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?
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
• POWER FAILURE
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
Restart the cycle
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?
xplain how to use softener
< Clean the compartment for softener >
Visit to check
LOW-SUDSING
󳢮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
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. If you replace the MAIN PWB ASSEMBLY, Put in the connectors correctly.
NO
NO
YES
YES
YES
NO
NO
YES
<PWB ASSEMBLY (MAIN)>
<PWB ASSEMBLY (MAIN)>
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