LG WM2701H Series Service Manual

Website:http://biz.lgservice.com

WASHING MACHINE SERVICE MANUAL

CAUTION

READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.

MODEL : WM2701H*

JAN. 2009 PRINTED IN KOREA

P/No.: MFL30599132

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

1. SPECIFICATIONS

ITEM WM2701H*

COLOR

POWER SUPPLY

PRODUCT WEIGHT

ELECTRIC POWER

CONSUMPTION

REVOLUTION

SPEED

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

WASHING

DRAIN MOTOR

WASH HEATER

WASH

SPIN

W:BLUE WHITE, V:Stainless VCM

AC 120 V, 60 Hz

192 lbs (87kg)

280 W

80 W

1000 W

46 rpm

0-1200 rpm

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

2. FEATURES & TECHNICAL EXPLANATION

ᆺં໺ቚ လ࿥

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.

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.

2-2. 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

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.

3. PARTS IDENTIFICATION

ACCESSORIES

Hot/Cold (1 each)

Hose

Non-skid pads

Wrench

Caps(4)

(for covering shipping

holes)

bolt

Tie strap (Option)

to secure drain hose to standpipe,

inlet hose, or laundry tub

Elbow Br

(for securing dr

acket

ain 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:

REMOVE THE SHIPPING

• Remove the 4 shipping bolts with the supplied wrench.

Do first lower side to remove easily.

•

Keep the shipping bolts and

spanner for future use.

•

Insert the 4 caps (provided)

into the hole.

BOLTS

INSTALL THE APPLIANCE

ON A FLAT AND FIRM SURFACE

ADJUST THE

LEVELING

•

Turn the leveling feet to adjust the appliance.

•

Turn clockwise to raise; counterclockwise to lower.

■ 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.

TEST OPERATION

Preparation for

washing.

• Connect the power plug to the outlet.

• Connect the inlet hose.

Check the water heating

function.

Press the POWER button.

Check the automatic

reverse rotation.

Press the Start/Pause

button.

• Listen for a click to determine if

the door has locked.

Check the water supply.

• Press the WASH/RINSE button

and the present temperature will be displayed.

Check 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.

• Check if the drum rotates

clockwise and counterclockwise.

Press the

START/PAUSE button.

•

Listen for a click to determine

if the door is unlocking.

• Check if water is supplied

through the detergent dispenser.

Water removal.

•

If SERVICE is needed during

check, remove the remaining

water by pulling out the hose cap.

5. OPERATION

5-1. CONTROL PANEL FEATURES

WM2701H*

Power Button

Status Indicator

• Use this button to turn the power On/Off.

• It shows elapsed time of the cycle the washer is operating.

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.

Option Button

• PREWASH:

• 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

• WATER PLUS: Add extra water to the wash and rinse cycles for superior results.

Use this option for loads that need pretreatment. It adds 16 minutes prewash and a spin cycle.

detergent mount automatically by the smart sensor & program.

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

5-2. CYCLE GUIDE

The cycle guide below shows the options and recommended fabric types for each cycle.

Cycle

Sanitary

Bright

White

Cold Care

Bulky/

Large

Perm

Press

Cotton/ Normal

Heavy

Duty

Towels

Small

Load

Fabric type Spin Speed Soil Level

Heavily soiled underwear, work clothes, diapers, etc.

White Fabrics

Small load of cotton, linen, towels, shirts, sheets, jeans, mixed loads.

Large items such as blankets and comforters

Dress shirts/pants, wrinkle free clothing, poly/cotton blend clothing, table cloths

Cotton, linen, towels, shirts, sheets, jeans, mixed loads

Heavy soiled Cotton Fabrics

Towels and cotton

Cotton, linen, towels, shirts, sheets, jeans, mixed loads

Wash/Rinse

Temp.

Extra Hot/Cold

Extra High

No Spin

Medium

Hot/Cold

Cold/Cold

Warm/Cold

Warm/Warm

Cold/Cold

Warm/Cold

Warm/Warm

Hot/Cold

Cold/Cold

Warm/Cold

Warm/Warm

Hot/Cold

Cold/Cold

Warm/Cold

Warm/Warm

Hot/Cold

Cold/Cold

Warm/Cold

Warm/Warm

Hot/Cold

Cold/Cold

Warm/Cold

Warm/Warm

Hot/Cold

Warm/Cold High

Warm/Warm

Hot/Cold

Cold/Cold

Extra High

No Spin

Medium

Extra High

No Spin

Medium

Medium No Spin

Medium

No Spin

Extra High

No Spin

Medium

Extra High

No Spin

Medium

Extra High

No Spin

Extra High

No Spin

Medium

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

Normal

Heavy

Light

Normal

Heavy

Light

Normal

Light

Normal

Heavy

Light

Normal

Heavy

Light

Normal

Heavy

Light

Heavy

Light

Normal

Heavy

Light

Normal

Heavy

Light

Pre-

Wash

Rinse +

Spin

Extra

Rinse

WASH/Rinse

Optimizer

Water

Plus

Stain

Cycle

Delicates

Fabric type Spin Speed Soil Level

Dress shirts/blouses nylons, sheer or lacy garments

Wash/Rinse

Temp.

Cold/Cold

Warm/Cold

Warm/Warm

Medium

No Spin

Low

Normal

Heavy

Light

Pre-

Wash

Rinse +

Spin

Extra

Rinse

WASH/Rinse

Optimizer

Water

Plus

Stain

Cycle

Hand

Wash/

Wool

Speed

Wash

NOTE: To protect your garments, not every wash/rinse temperature, spin speed, soil level, or option is available

with every cycle.

Items labeled "hand washable"

Lightly soiled clothing and small loads

Cold/Cold

Warm/Cold

Warm/Warm

Hot/Cold

Cold/Cold

Warm/Cold

Warm/Warm

Low

Medium No Spin

Extra High

No Spin

Low

Medium

High

Normal

Light

Normal

Heavy

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.

5-4. EXPLANATION OF EACH PROCESS

No. Process Explanation

Stay • Electrical power is supplied

•Washer is ready to work and the micom is in the active mode.

Water supply

Soaking & washing laundry

• 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.

•To get laundry wet, drum rotates clockwise and counterclockwise.

• If water amount is insufficient at this time, the Inlet valve will supply water again.

Heating &

4. washing

Washing

& heating

/ washing

Washing • Fuzzy Logic decides washing time according to the laundry load, water

Drainage • A pump motor drains the water from the drum.

9. Untangling

(Sensing eccentricity)

• The heater heats the water in drum to the selected water temperature and drum rotates for 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.

temperature, and other factors.

•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.

• 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.

No. Process Explanation

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.

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.

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.

Rinse water

•Water supply for rinse process

supply

Rinse • Rinsing process.

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.

Disentangling • The same as item 9.

Intermittent spin

Main spin1 • The same as item B.

• The same as item A.

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.

+ 43 hidden pages

LG WM2701H Series Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual