LG WM2701H Series User manual

WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
Website:http://biz.lgservice.com
MODEL : WM2701H*

P/No.: MFL30599132
JAN. 2009 PRINTED IN KOREA

2
CONTENTS
1. SPECIFICATIONS ...............................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ....................................................................... 4
3. PARTS IDENTIFICATION ................................................................................................... 7
4. INSTALLATION AND TEST ................................................................................................ 8
5. OPERATION ...................................................................................................................... 11
5-1. CONTROL PANEL FEATURES ................................................................................. 11
5-2. CYCLE GUIDE ........................................................................................................... 14
5-3. SPECIAL FUNCTIONS .............................................................................................. 16
5-4. EXPLANATION OF EACH PROCESS ....................................................................... 17
6. PROGRAM CHART .......................................................................................................... 19
7. TEST MODE ..................................................................................................................... 20
7-1. SAFETY CAUTION .................................................................................................... 20
7-2. LOAD TEST MODE ................................................................................................... 20
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY ............................................. 20
8. TROUBLESHOOTING ...................................................................................................... 21
8-1. SAFETY CAUTION .................................................................................................... 21
8-2. ERROR MODE SUMMARY ...................................................................................... 21
8-3. TROUBLESHOOTING SUMMARY ..........................................................................23
8-4. TROUBLESHOOTING WITH ERROR ....................................................................... 24
8-5. TROUBLESHOOTING ELSE ..................................................................................... 31
9. COMPONENT TESTING INFORMATION ........................................................................ 37
9-1. FILTER ASSEMBLY (LINE FILTER) .......................................................................... 37
9-2. DOOR LOOK SWITCH ASSEMBLY .......................................................................... 38
9-3. STATOR ASSEMBLY ................................................................................................. 40
9-4. PUMP MOTOR ASSEMBLY ...................................................................................... 43
9-5. INLET VALVE ASSEMBLY ......................................................................................... 44
9-6. HEATER ASSEMBLY ................................................................................................. 45
9-7. THERMISTOR ASSEMBLY ....................................................................................... 46
9-8. VIBRATION SENSOR ASSEMBLY ............................................................................ 49
10. DISASSEMBLY INSTRUCTIONS .................................................................................... 50
11.EXPLODED VIEW ............................................................................................................ 59
11-1. CABINET AND CONTROL PANEL ASSEMBLY ...................................................... 59
11-2. DRUM AND TUB ASSEMBLY .................................................................................. 60
11-3. DISPENSER ASSEMBLY ........................................................................................ 61

3
1. SPECIFICATIONS
ITEM WM2701H*
COLOR
POWER SUPPLY
PRODUCT WEIGHT
CYCLES
WASH/RINSE TEMPERATURES
SPIN SPEEDS
OPTIONS
OPERATIONAL WATER PRESSURE
CONTROL TYPE
WASH CAPACITY [cu.ft ]
DIMENSIONS
DELAY WASH
DOOR SWITCH TYPE
WATER LEVEL
LAUNDRY LOAD SENSING
ERROR DIAGNOSIS
AUTO POWER OFF
CHILD LOCK
ELECTRIC POWER
CONSUMPTION
REVOLUTION
SPEED
WASHING
DRAIN MOTOR
WASH HEATER
WASH
SPIN
12
5
5
Prewash, Rinse+Spin, Extra Rinse, Water Plus, Stain Cycle,
Wash/Rinse Optimizer, Tub Clean
14.5-116 psi (100-800 kPa)
Electronic
3.87 (4.5 IEC)
27”(W) X 293/4”(D) X 3811/16”(H), 5013/16” (D, door open)
up to 19 hours
PTC + Solenoid
10 steps (by sensor)
Incorporated
Incorporated
Incorporated
Incorporated
280 W
80 W
1000 W
46 rpm
0-1200 rpm
W:BLUE WHITE, V:Stainless VCM
AC 120 V, 60 Hz
192 lbs (87kg)

4
2. FEATURES & TECHNICAL EXPLANATION
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.
ᆺં໺ቚ လ࿥
ᆺં໺ቚ လ࿥
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.
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.
2-1. FEATURES

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. 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 controls of the washer while washing.

7
3. PARTS IDENTIFICATION
ACCESSORIES
Wrench
Tie strap (Option)
to secure drain hose to standpipe,
inlet hose, or laundry tub
Hot/Cold (1 each)
Hose
Non-skid pads Caps(4)
(for covering shipping
bolt holes)
Elbow Bracket
(for securing drain hose)

4. INSTALLATION & TEST
Before servicing, ask the customer what the trouble is.
Check the setup (power supply is 120V, remove the transit bolts, level the washer...)
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:
1
2
3
4
5
6
6
REMOVE THE SHIPPING
BOLTS
•Remove the 4 shipping bolts
with the supplied wrench.
Do first lower side to remove easily.
• Turn the leveling feet to adjust
the appliance.
• Turn clockwise to raise;
counterclockwise to lower.
• Keep the shipping bolts and
spanner for future use.
• Insert the 4 caps (provided)
into the hole.
ADJUST THE
LEVELING
INSTALL THE APPLIANCE
ON A FLAT AND FIRM SURFACE
8

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
TEST OPERATION
1
Preparation for
washing.
•Connect the power plug to
the outlet.
•Connect the inlet hose.
3Press the Start/Pause
button.
•Listen for a click to determine if
the door has locked.
6Check the water heating
function.
•Press the WASH/RINSE button
and the present temperature will
be displayed.
5Check the automatic
reverse rotation. 4Check the water supply.
•Check if water is supplied
through the detergent dispenser.
7Check the drain and spin
functions.
•Power off and the power on.
•Press the SPIN SPEED button.
•Press the START/PAUSE button.
•Check the spin and drain
functions.
8Press the
START/PAUSE button.
9Water removal.
•If SERVICE is needed during
check, remove the remaining
water by pulling out the hose cap.
2Press the POWER button.
•Listen for a click to determine
if the door is unlocking.
7
•Check if the drum rotates
clockwise and counterclockwise.

11
5. OPERATION
5-1. CONTROL PANEL FEATURES
WM2701H*

12
Power Button
•Use this button to turn the power
On/Off.
Cycle Selector Knob
•Rotate the Cycle selector knob to select the cycle designed for
different types of fabric and soil levels.
Start/Pause
•Use this button to Start/
Stop the washer.
Status Indicator
•It shows elapsed time of the cycle the washer
is operating.

13
Wash/Rinse, Spin speed, Soil Level, Beeper Button
•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
•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.
•WASH/RINSE OPTIMIZER: Use the WASH/RINSE OPTIMIZER button to select the water level, and
detergent mount automatically by the smart sensor & program.
•WATER PLUS: Add extra water to the wash and rinse cycles for superior results.

14
5-2. CYCLE GUIDE
The cycle guide below shows the options and recommended fabric types for each cycle.
Cycle Fabric type Spin Speed Soil Level
Stain
Cycle
Wash/Rinse
Temp.
Pre-
Wash
Rinse +
Spin
Extra
Rinse
WASH/Rinse
Optimizer
Water
Plus
Sanitary
Heavily soiled
underwear, work
clothes, diapers, etc.
Extra Hot/Cold
Extra High
No Spin
Low
Medium
High
Heavy
Light
Normal
Bright
White
White Fabrics
Hot/Cold
Extra High
No Spin
Low
Medium
Cold/Cold
Warm/Cold
Warm/Warm
High
Heavy
Light
Normal
Cold Care
Small load of cotton,
linen, towels, shirts,
sheets, jeans, mixed
loads.
Cold/Cold
Extra High
No Spin
Low
Medium
High
Light
Normal
Bulky/
Large
Large items such as
blankets and
comforters
Warm/Cold
Medium
No Spin
Warm/Warm
Hot/Cold
Cold/Cold
Low
Heavy
Light
Normal
Perm
Press
Dress shirts/pants,
wrinkle free clothing,
poly/cotton blend
clothing, table cloths
Warm/Cold
High
No Spin
Low
Warm/Warm
Hot/Cold
Cold/Cold
Medium
Heavy
Light
Normal
Cotton/
Normal
Cotton, linen, towels,
shirts, sheets, jeans,
mixed loads
Heavy soiled Cotton
Fabrics
Towels and cotton
Cotton, linen, towels,
shirts, sheets, jeans,
mixed loads
Warm/Cold
Extra High
No Spin
Low
Medium
Warm/Warm
Hot/Cold
Cold/Cold
High
Heavy
Light
Normal
Heavy
Duty
Warm/Cold
No Spin
Low
Medium
High
Warm/Warm
Hot/Cold
Cold/Cold
Extra High
Light
Normal
Heavy
Towels
Warm/Cold
High
Extra High
No Spin
Low
Warm/Warm
Hot/Cold
Medium
Heavy
Light
Normal
Small
Load
Warm/Cold High
Extra High
No Spin
Low
Medium
Warm/Warm
Hot/Cold
Cold/Cold
Heavy
Light
Normal

15
Cycle Fabric type Spin Speed Soil Level
Stain
Cycle
Wash/Rinse
Temp.
Pre-
Wash
Rinse +
Spin
Extra
Rinse
WASH/Rinse
Optimizer
Water
Plus
Delicates
Dress shirts/blouses
nylons, sheer or lacy
garments
Cold/Cold
No Spin
Low
Medium
Heavy
Light
Normal
Hand
Wash/
Wool
Items labeled
"hand washable"
Cold/Cold
Medium
No Spin
Warm/Cold
Warm/Warm
Warm/Cold
Warm/Warm
Low
Light
Normal
Speed
Wash Lightly soiled clothing
and small loads
Hot/Cold
No Spin
Low
Medium
High
Cold/Cold
Warm/Cold
Warm/Warm
Extra High
Normal
Heavy
Light
NOTE: To protect your garments, not every wash/rinse temperature, spin speed, soil level, or option is available
with every cycle.

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5-3. SPECIAL FUNCTIONS
The option buttons also activate special functions, including CHILD LOCK, DRUM LIGHT, TUB CLEAN.
Press and hold the option button marked with the special function for 3 seconds to activate.
CHILD LOCK
Use this option to prevent unwanted use of the washer or to keep cycle settings from being
changed while the washer is operating. Press and hold the PREWASH button for 3 seconds
to activate or deactivate CHILD LOCK. CHILD LOCK will be shown in the display, and all
controls are disabled except the ON/OFF button. The washer can be locked during a cycle.
TUB CLEAN
A buildup of detergent residue can occur in the wash tub over time and can lead to a mildew
or musty smell. The TUB CLEAN cycle is specially designed to remove this buildup. Press
and hold the EXTRA RINSE button for 3 seconds to activate this cycle. The display will show
a message to add liquid bleach to the dispenser. After the cycle has ended, open the door
and allow the drum interior to dry completely. NOTE: Do NOT use this cycle with clothes, and
do NOT add detergent or fabric softener.

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5-4. EXPLANATION OF EACH PROCESS
No. Process Explanation
1. Stay • Electrical power is supplied
•Washer is ready to work and the micom is in the active mode.
2. Water
supply
•After loading laundry and selecting a course and a cycle, water is
supplied and drum rotates.
•When a user selects Pre-wash course, water is supplied through
pre wash valve.
3. Soaking
& washing
laundry
•To get laundry wet, drum rotates clockwise and counterclockwise.
•If water amount is insufficient at this time, the Inlet valve will supply
water again.
4. Heating &
washing
•The heater heats the water in drum to the selected water temperature
and drum rotates for washing.
5.
~
6.
Washing
& heating
/ washing
•When the water temperature reaches to the selected temperature, the
heating stops and only the drum rotates.
•If water temperature becomes lower than selected because of
re-supplied water, the heating starts again.
7. Washing • Fuzzy Logic decides washing time according to the laundry load, water
temperature, and other factors.
8. Drainage • A pump motor drains the water from the drum.
•After sensing drained water amount by water level frequency, spin starts.
•When a heating course is selected, stay cooling process is performed to
decrease the water temperature gradually to prevent laundry from being
damaged and for safety reasons.
9. Untangling
(Sensing
eccent-
ricity)
•It balances laundry load and senses the eccentricity of the load, to only
allow spinning without vibration
•If the eccentricity is worse than the allowed level, it repeats the
disentangling process. When the repeated time is more than allowed
level, it displays UE.
•If the eccentricity is good, the intermittent spin starts.
•During this process, the drain pump works for drainage intermittently.

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No. Process Explanation
A. Intermittent
spin
•To reach the correct set speed, the motor rotates clockwise and
counterclockwise directions after spin process starts.
•If the water level frequency is lower than 23.0 kHz, a washer senses
suds and starts suds removal process.
B. Rinse
spin
•In this process, the remaining water during washing process is
extracted and the selected speed is kept.
•Removing suds process is in active mode at this cycle.
C. Remaining
spin
• After spin finishes, the drum rotates by remaining spin power until it stops.
Motor power is off.
•This process is overlapped with next process.
D. Rinse water
supply
•Water supply for rinse process
E. Rinse • Rinsing process.
F. Last
drainage
•After spin finishes and power is not supplied to motor, the drum
rotates by remaining spin power
•If rinse hold is selected, the drainage is not proceeded after rinse
finishes.
G. Disentangling • The same as item 9.
H.
Intermittent spin
•The same as item A.
I. Main spin1 • The same as item B.
J. Main spin2 • At the end of a main spin, the spin speed will reach the selected rpm.
K. Remaining spin • The same with item C.
L. Disentangling • After spin finishes, disentangling starts to remove unbalanced
laundry.
M. End • After 'end' signal is displayed, it stays for 8 seconds and power is
automatically turned off. (Auto type door switch)
•After door switch is off, end signal is displayed in the case of
manual type and it takes around 2 minute to turn off door switch.

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6. PROGRAM CHART
To w e l s 70
20 24 60 35
73 75 73 50 63 52 20 20
100
10 25
Bright whites Heavy Duty
Soak Wash
Small Load
Cold Care