LG WM2487HM series User manual

100
WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL: WM2487H*M
CAUTION
Website: http: //www.LGEservice.com
E-mail: http: //www.LGEservice.com/techsup.html
!

101
JUN. 2006 PRINTED IN KOREA P/No.: MFL31245501

2
CONTENTS
1. SPECIFICATIONS .........................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4
3. PARTS IDENTIFICATION ............................................................................................................ 7
4. INSTALLATION & TEST ............................................................................................................... 8
5. OPERATION ................................................................................................................................11
6. WIRING DIAGRAM/PROGRAM CHART.....................................................................................14
7. TROUBLESHOOTING.................................................................................................................15
7-1. BEFORE PERFORMING SERVICE...................................................................................15
7-2. QC TEST MODE.................................................................................................................15
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY......................................................15
7-4. ERROR DISPLAY...............................................................................................................16
8. ERROR DIAGNOSIS AND CHECK LIST....................................................................................18
8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION ........................................18
8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING ..............................................................21
9. DISASSEMBLY INSTRUCTIONS ...............................................................................................29
10. EXPLODED VIEW.....................................................................................................................40
10-1. CABINET & CONTROL PANEL ASSEMBLY....................................................................40
10-2. DRUM & TUB ASSEMBLY................................................................................................41
10-3. DISPENSER ASSEMBLY.................................................................................................42

3
1. SPECIFICATIONS
ITEM WM2487H*M
COLOR W:BLUE WHITE, N:NAVY BLUE, R:CANDY APPLE RED
POWER SUPPLY AC 120 V, 60 Hz
PRODUCT WEIGHT 192 lbs (87kg)
WASHING 280 W
DRAIN MOTOR 80 W
WASH HEATER 1000 W
WASH 46 rpm
SPIN 0-1200 rpm
CYCLES 9
WASH/RINSE TEMPERATURES 5
SPIN SPEEDS 5
OPTIONS
Prewash, Rinse+Spin, Extra Rinse, Water Plus, Stain Cycle
WATER CIRCULATION Incorporated
OPERATIONAL WATER PRESSURE 14.5
-
116 psi (100-800 kPa)
CONTROL TYPE Electronic
WASH CAPACITY [cu.ft] 3.47 (4.0 IEC)
DIMENSIONS
27” (W) X 293/4” (D) X 3811/16” (H), 5013/16” (D, door open)
DELAY WASH up to 19 hours
DOOR SWITCH TYPE PTC + Solenoid
WATER LEVEL 10 steps (by sensor)
LAUNDRY LOAD SENSING Incorporated
ERROR DIAGNOSIS Incorporated
AUTO POWER OFF Incorporated
CHILD LOCK Incorporated
RLM ENABLE Incorporated
STEAM Incorporated
ELECTRIC POWER
CONSUMTION
REVOLUTION SPEED

4
2. FEATURES & TECHNICAL EXPLANATION
2-1. FEATURES
■Ultra Capacity
The Larger drum enables not just higher head drop and stronger centrifugal force, but
also less tangling and wrinkling of the laundry. Heavier loads, such as king size
comforters, blankets, and curtains, can be washed.
■Direct Drive System
The advanced Brushless DC motor directly drives the drum without
belt and pulley.
■Tilted Drum and Extra Large Door Opening
Tilted drum and extra large opening make it possible to load
and unload clothing more easily.
■Steam Washing and SteamFreshTM
Steam Washing features upgraded washing performance with low energy and water
consumption. SteamFreshTM cycle removes wrinkles from dry clothes.
■RollerJets
Washing ball enhances the wash performance and reduces damage
to the clothing. The jets spray and help tumble clothes to enhance
washing performance while maintaining fabric care.
■Automatic Wash Load Detection
Automatically detects the load and optimizes the washing time.
■Built-in Heater
Internal heater helps to maintain water temperature at its optimum level for selected
cycles.
■Child Lock
The Child lock prevents children from pressing any button to change the settings
during operation.
■Using the RLM (Remote Laundry Monitor)
The RLM monitors status of your washer and/or dryer. You can plug the display unit
into any power outlet in your home.
The RLM Display Unit can be purchased separately for this washer.
추가선택, 예약,
추가선택, 예약,

5
2-2. NEURO FUZZY WASHING TIME OPTIMIZATION
To get the best washing performance, optimal time is determined by the water temperature,
the selected washing temperature, and the size of the load.
2-3. WATER LEVEL CONTROL
●This model incorporates a pressure sensor which can sense the water level in the tub.
●The water supply is stopped when the water level reaches the preset level, the washing
program then proceeds.
●Spinning does not proceed until the water in the tub drains to a certain level.
2-4. DOOR CONTROL
●The door can be opened by pulling the door handle whenever washer is not in operation.
●When the cycle is completed, the DOOR LOCKED light will turn off.
●If a power failure has occurred while in operation, the door will unlock after 5 minutes.
●Clicking sounds can be heard when the door is locked/unlocked.
NEURO-
FUZZY
load
size
selected
washing
temperature
water
temperature
washing time
rinsing time
spin rhythm, time
the best
washing
performance
SENSING PROCESSING DETERMINATION EFFECT

6
2-5. THE DOOR CAN NOT BE OPENED
●While program is operating
●When a power failed and power plug is taken out in operation
●While Door Lock lights turn on.
●White the motor is in the process of intertial rotating, through the operation is paused.
2-6. DOOR LOCKED LAMP LIGHTS
●When the frequency of water level is lower than 22.9 kHz
(It can be canceled when the frequency is more than 23.8 kHz)
●When the temperature inside the tub is higher than 45 °C and water level is not 25.5 kHz
(It can be canceled when the water level is 25.5 kHz or the temperature inside the tub is lower than 40 °C)
2-7. CHILD LOCK
●Use this option to prevent unwanted use of the washer. Press and hold PRE WASH 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.
2-8. WATER CIRCULATION
●When Washing and Rinsing function of shower at the upper part of Gasket.
●When Washing, it continuously operates for 3 minutes and intermittently.
●When Rinsing, it continuously operates after completion of water supply.
2-9. STEAM
●For tough stained clothes, underwear, or baby clothes.
●Steam Wash is available with Sanitary, Bulk/Large, Perm. Press, Cotton/Normal, and baby Wear cycles.
●This option features upgraded washing performance with low energy and water consumption
●Do not load delicates such as wool, silk, and easily discolored clothes.
2-10. DRUM LIGHT
●The Drum Light comes on when the Power button is pressed. It goes off when the door is closed and the
washer starts operation.
●The Drum Light remains off when the door is locked.
●The Drum Light can be turned on while the washer is in operation by pressing the Rinse+Spin button for 3
seconds. The light will turn off automatically 4 minutes later.
●The Drum Light comes on when the washing cycle is finished and goes off 4 minutes later.

7
3. PARTS IDENTIFICATION
■ACCESSORIES
& Steam Nozzle
Drum Light
Door Seal
Safety Cover (PLC Modem)

8
󱀊Before servicing, ask the customer what the trouble is.
󱀋Check the setup (power supply is 120 V AC, remove the transit bolts....).
󱀌Check with the troubleshooting guide.
󱀍Plan your service method by referring to the disassembly instructions.
󱀎Service the unit.
󱀏After servicing, operate the appliance to see whether it functions correctly.
■STANDARD INSTALLATION
The appliance should be installed as follows:
REMOVE THE SHIPPING INSTALL THE APPLIANCE ADJUST THE
BOLTS
ON A FLAT AND FIRM SURFACE LEVELING
󳢯Remove the 4 shipping bolts 󳢯Turn the leveling feet to adjust
with the supplied wrench. the appliance.
※Do first lower side to remove easily.
󳢯Keep the shipping bolts and
spanner for future use.
󳢯Insert the 4 caps
(provided) into the hole.
󳢯Turn clockwise to raise;
counterclockwise to lower.
4. INSTALLATION & TEST

9
■HOW TO CONNECT THE INLET HOSE
󳢯Verify that the rubber washer is inside of the
valve connector.
󳢯Tighten the inlet hose securely to prevent leaks.
■CONNECT THE DRAIN HOSE
■CONNECT POWER PLUG
※The end of the drain hose should be placed less than 96 ” from the floor.
·Connect the power plug to the wall outlet. ·Avoid connecting several electric devices, as
doing so may cause a fire.
·Make sure that the hose is not twisted. ·Avoid submerging the end of the hose.

10
SOFTENER
MAX
󳞊TEST OPERATION
󳢯Connect the power plug to
the outlet.
󳢯Connect the inlet hoses.
󳢯Power off and the power on.
󳢯Press the SPIN SPEED button.
󳢯
Press the START/PAUSE button.
󳢯Check the spin and drain
functions.
󳢯 Listen for a click to determine
if the door is unlocking.
󳢯Listen for a click to determine if
the door has locked.
󳢯If SVC is needed during check,
remove the remaining water by
pulling out the hose cap.
Preparation for Press the POWER button. Press the Start/Pause
washing. button.
󳢯Press the WASH/RINSE button 󳢯Check if the drum rotates 󳢯Check if water is supplied
and the present temperature will
clockwise and counterclockwise. through the detergent dispenser.
be displayed.
Check the water heating Check the automatic Check the water supply.
function. reverse rotation.
Check the drain and spin
Press the Water removal
functions.
START/PAUSE button.

11
5. OPERATION
■WM2487H*M

12
• 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.
• It shows elapsed time of the cycle the washer is
operating.
Power Button Status Indicator
Start/Pause
Cycle Selector Knob

13
•PREWASH: Use this option for loads that need pretreatment. It adds 16 minutes prewash and a spin cycle.
• RINSE+SPIN: Use this option to rinse and then spin.
• EXTRA RINSE: This option provides an additional rinse.
• STAIN CYCLE: Adds time to the wash and rinse cycles for better stain removal. Automatically provides a rinse.
• WATER PLUS: Add extra water to the wash and rinse cycles for superior results.
• 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.
• To change the soil level, press the Soil Level button repeatedly until the desired setting is on.
• Press repeatedly to adjust the volume of the Beeper
Option Button
Wash/Rinse, Spin speed, Soil Level, Beeper Button

14
**
Cool-down **Approx.
(Minutes)
* Wash time is in minutes.
** The total working time will vary with the load size,
water temperature and ambient temperature.
Normal
Bulky
/Large
Hand Wash
/Wool
Baby Wear
25
120
14
19
70
6. WIRING DIAGRAM/PROGRAM CHART
NA
BL
10 11 12 678923451
10 11 12 678923451623451623451
INLET VALVE
DISPLAY PWB DISPLAY PWB
623451623451
623451623451
623451
23412341
MAIN PWB
WASH AG WH
/
123456
123 123 12341234 1234 21 21
21
21
21
2156 123456 1234 1234 1234 1234 123456
123
123
123
123
10 11 678923451
213213
NA
NA NA
BL
NA
BL
NA
10 11 12 13 678923451
10 11 12 13 678923451
10 11 12 13 678923451
10 11 12 13 678923451
10 11 12 13 678923451
1234
1234 321 321 123 1234 4
MOTOR
LAMP
PRESSURE
SENSOR
THERMISTOR
POWER
CORD
+HOUSING
32
321
1
12
1
GND L S
21
1
12
1
UVW
2
12
12
WH
12
12
3
3
12
123
343
432
21
1
12
123
3
54
543
32
21
1
Ha Hb
GND
FUSE
/
FUSE
A G
A G
SENSOR
12 12 121212
AG
/
NOISE
FILTER
PLC MODEM
123
123
123
123
8
7
6
5
4
3
2
1
1
2
DOOR LOCK
4
SOLE
NOID
321
2345
Base/Line
3854ER3001Z
NA
NA
10 11 12 13 678923451
10 11 12 13 14 1516 17
14 1516 17 18 18
678923451
10 11 12 678923451 623451

15
7. TROUBLESHOOTING
7-1. BEFORE PERFORMING SERVICE
■Be careful of electric shock when disconnecting parts while troubleshooting.
■The voltage of each terminal is 120 V AC and DC when the unit is plugged in.
7-2. QC TEST MODE.
The washer must be empty and the controls must be in the off state.
1. Press the SPIN SPEED and SOIL LEVEL buttons simultaneously.
2. Press the Power button, while the above condition. Then buzzer will sound twice.
3. Press the Start/Pause button repeatedly to cycle through the test modes.
Check Point Display Status
None Turns on all lamps and locks the door.
1 time Tumble clockwise. rpm (42~50)
2 times Low speed Spin. rpm (55~65)
3 times High speed Spin. rpm (125~135)
4 times Inlet valve for prewash turns on. Water level frequency (25~65)
5 times Inlet valve for main wash turns on. Water level frequency (25~65)
6 times Inlet valve for hot water turns on. Water level frequency (25~65)
7 times Inlet valve for steam turns on. Water level frequency (25~65)
8 times Inlet valve for bleach turns on. Water level frequency (25~65)
9 times Tumble counterclockwise. rpm (42~50)
10 times
Heater turns on for 3 sec. Water temperature
11 times Circulation pump turns on. Water level frequency (25~65)
12 times
Drain pump turns on. Water level frequency (25~65)
13 times Water level Sensor for Steam
Water level frequency of TSG(0~255)
14 times Steam Heater turns on for 1.2 sec. TSG temperature
15 times Off -
Number of times the
Start/Pause button is pressed
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
󳢬Press the WASH/RINSE and DELAY WASH button simultaneously.
So, for example a display indicating 241: a Water level frequency of 241 x.1 kHz
= 24.1 kHz
The digits indicate the water level frequency ( x.1 kHz ).

16
7-4. ERROR DISPLAY
󳢯If you press the START/PAUSE button when an error is displayed, any error exceptdewill
disappear and the machine will go into the pause status.
󳢯In case ofde,de,deif the error is not resolved within 20 sec., or the in 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 the case ofde, power will not be turned off.
ERROR SYMPTOM CAUSE
WATER INLET
ERROR
•Correct water level (246) is not reached within 8 minutes
after water is supplied or it does not reach the preset water
level within 25 minutes.
•The load is too small.
•The appliance is tilted.
•Laundry is gathered to one side.
•Non distributable things are put into the drum.
1
2
IMBALANCE
ERROR
•Not fully drained within 10 minutes.
3
DRAIN
ERROR
•Water is overflowing (water level frequency is over 213).
※If is displayed, the drain pump will operate to
drain the water automatically.
4
OVER FLOW
ERROR
•The SENSOR SWITCH ASSEMBLY is out of order.
5
PRESSURE
SENSOR
ERROR
•Door not all the way closed.
•Loose electrical connections at Door switch and
PWB Assembly.
•The DOOR SWITCH ASSEMBLY is out of order.
6
DOOR OPEN
ERROR
•The THERMISTOR is out order.
7
HEATING
ERROR

17
ERROR SYMPTOM CAUSE
•The connector (3-pin, male, white) in the MOTOR
HARNESS is not connected to the connector
(3-pin, female, white) of STATOR ASSEMBLY.
•The electric contact between the connectors
(3-pin, male, white) in the MOTOR HARNESS
and 4-pin, female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.
•The MOTOR HARNESS between the STATOR
ASSEMBLY and MAIN PWB ASSEMBLY is cut (open
circuited).
•The hall sensor is out of order/defective.
8
9
LOCKED
MOTOR
ERROR
•
The washer experienced a power failure.
POWER
FAILURE
•EEPROM is out of order.
※Displayed only when the START/PAUSE button is first
pressed in the QC Test Mode.
10
EEPROM
ERROR

18
8-1. DIAGNOSIS AND SOLUTION 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
120 V AC outlet?
Power failure? or Breaker opened?
Is the outlet controlled by a switch?
Visit to service.
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 service.
Clean the filter of
inlet valve

19
SYMPTOM GUIDE FOR SERVICE CALL
Door error
Drain trouble
Was the load too large?
Visit to service.
Visit to service.