LG LD-4050W User manual

DISHWASHER

SERVICE MANUAL

BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY

FOR SAFETY AND CORRECT SERVICES.

NOTE

MODEL : LD-4050W

LD-14AW2 / LD-14AT2

LD-14AW3 / LD-14AT3

- 3 -

1. CAUTION....................................................................................................................................4

2. SPECIFICATIONS.....................................................................................................................5

3. FEATURES & TECHNICAL EXPLANATION.....................................................................6

4. PARTS NAME.........................................................................................................................11

5. WIRING DIAGRAM...........................................................................................................13

6. PROGRAM CHART (SCHEMATIC DIAGRAM)............................................................15

7. HOW TO DISASSEMBLE ...................................................................................................17

8. TROUBLE SHOOTING METHODS.....................................................................................27

A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE.........27

B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM ..........................................29

9. INSTALLATION INSTRUCTION.....................................................................................33

10. EXPLODED VIEW ..............................................................................................................38

11. REPLACEMENT PART LIST............................................................................................44

CONTENTS

- 4 -

�DISCONNECT POWER CORD BEFORE SERVING

�RECONNECT ALL GROUNDING DEVICES

IMPORTANT SAFETY NOTICE !

This service information is intended for individuals

possessing adequate backgrounds of electrical,

electronic and mechanical experience.

Any attempt to repair this appliance may result in

personal injury and property damage.

The manufacturer or seller can not be responsible

for the interpretation of this information, nor can it

assume any liability in connection with its use.

CAUTION !

- 5 -

2. SPECIFICATION

Model

Rated Voltage / Frequency

Installation

Place Settings

Product Dimension(mm)

Product Weight(Kg)

Door Colour

Tub Material

Control

Rated Power(Watt)

Heater Power(Watt)

Programs

Upper Rack Position

Lower Rack

Water Consumption(ℓ)

Power Consumption (kWh)

Operating Time (min)

Fan Dry System

Delay Start Function

Auto-Off Power Switch

Process Monitor

Wash Level

Racks

Operating Water Pressure (Bar)

ITEM SPECIFICATION

LD-4050W LD-14AW2LD-14AT2

AC 240V/50Hz

Free Standing / built-In

600(W)×600(D)×850(H)

Stainless Steel

Electronic

2,210

2,100

Sliding Adjustable

100% Fold down

18 (Economy)

0.7 (Economy)

84 (Economy)

Yes

Nylon Coating

0.5 ~ 8

AC 240V/50Hz

Free Standing / built-In

600(W)×600(D)×850(H)

White

Stainless Steel

Electronic(Fussy)

2,210

2,100

Sliding Adjustable

100% Fold down

18 (Economy)

0.7 (Economy)

84 (Economy)

Yes

Nylon Coating

0.5 ~ 8

AC 240V/50Hz

Free Standing / built-In

600(W)×600(D)×850(H)

White

Stainless Steel

Electronic

2,210

2,100

Adjustable

50% Fold down

18 (Economy)

0.7 (Economy)

84 (Economy)

Yes

Nylon Coating

0.5 ~ 8

- 6 -

3. FEATURES & TECHNICAL EXPLANATION

• Turbo fan drying system expels out hot and

humid air to enhance quick and effective

drying.

3-1 New Technology Introduction

3-1-1. Turbo Fan Drying System

• During the high temp. Rinse course, water

temperature in an dishwasher reaches 77°C,

considerably higher than the average rinse

temperature in conventional

dishwashers(65°C). This is how Rinse 77°C

can eliminate some bacteria such as

salmonella.

3-1-2. High Temperature Rinsing

• Turbo Spray System is elaborately designed to

achieve a more powerful and efficient wash.

You can see the excellent 3 rotating spray arm

with 5 directional waterjet.

3-1-3. Turbo Spray System

- 7 -

3-2. Display Panel

LD-4050W

RINSE /

EXTRA HOT

CHILD LOCK TIME DELAY SPRAY INTENSITY POWER

HALF LOAD DIAL (PROGRAM &

START / PAUSE) TIME SAVE

3-2. Display Panel

LD-14AW2 / LD-14AT2

- 8 -

• If you want to delay the

start of selected program,

press this button before

pressing start button.

• Pressing the delay time

will increase time by

1 hour.

• The delay start time can

be adjusted from 1 hour

to 19 hours.

DELAY START

BUTTON

• This function is

for saving time

and energy.

• With each press,

time save ON and

OFF is repeated.

• When select this

function, the

operating time will

be shorten.

TIME SAVE

• For operating, press this

button first for power on.

• After operating, this button

automatically switches off for

safety and energy saving.

• If case of irregular surge

disturbances to the machine,

the power may be

automatically turned

off for safety.

POWER SWITCH

BUTTON

• In case of small load, use

upper or lower rack only

to save energy.

• With each press, can

select upper or lower rack

only.

• In case you don’t select

this button, the machine

always works vario

washing, which operate

upper and lower spray

arm alternately.

HALF LOAD

• Indication of

remaining time

• Self diagnosis

and error

message display

REMAINING

TIME

• Used to lock or

unlock the control

buttons to prevent

all the setting from

being changed by a

child.

• For

locking/unlocking,

press Delay Start

and T-Save button

simultaneously.

CHILD LOCK

• When power is

on, program is

automatically set

to normal.

• If you want to

change the

program, press

the button and

set the program

you want to.

PROGRAM

• With each press,

Start and Pause

is repeated

during

operation.

• If the machine

remains in

Pause mode for

10 minutes, the

power is

automatically

turned off.

START/PAUSE

BUTTON

• With each press,

rinse+, rinse+ &

77。C sani rinse,

77。C sani rinse

is repeated.

RINSE/SANI

3.3 TEST MODE

CHECK PROGRAM(START IN THE STATE OF THE CLOSED DOOR)

- 9 -

LD-4050W

BUTTON The number of

pushing button DISPLAY Load and Checking points

Half Load+Time

Delay+POWER S/W

Rinse

Half Load

Time Delay

Multi Spray

Time Save

Dial knob

Start/Pause

1 TIME

1 Rotation

1 TIME

2 TIME

3 TIME

4 TIME

5 TIME

6 TIME

7 TIME

8 TIME

9 TIME

10 TIME

11 TIME

12 TIME

13 TIME

n : 0H

11 : 11

12 : 22

13 : 33

14 : 44

15 : 55

11 : 11 ~ 16 : 66

n : 01

Frequency

n : 03

n : 04

n : 05

n : 06

n : 07

n : 08

n : 09

Temperature

n : 11

n : 12

All LEDs are lighting

The LED of each course is lighting

None

Water level sensor

Washing motor

Drain pump

Inlet valve

Dispenser

Heater(for 10 sec.)

Fan motor

None

Thermister

Lower Nozzle

Upper Nozzle

Intensive

Auto

Economy

Gentle

Quick

Pre-wash

Time Save

Wash

Rinse

Dry

Lower

Upper

AUTO OFF S/W

Micro S/W must be ON to operate HEATER

3.3 TEST MODE

CHECK PROGRAM(START IN THE STATE OF THE CLOSED DOOR)

BUTTON The number of

pushing button DISPLAY Load and Checking points

Normal+Eco

+POWER S/W

Delay Start Key

T-Save Key

Intensive Key

Normal Key

Eco Key

Gentle Key

Quick Key

Pre-Wash Key

Half & Vario Key

Rinse Key

Start/Pause

1 TIME

2 TIME

3 TIME

4 TIME

5 TIME

6 TIME

7 TIME

8 TIME

9 TIME

10 TIME

11 TIME

12 TIME

13 TIME

n : 0H

11 : 11

12 : 22

13 : 33

14 : 44

15 : 55

11 : 11 ~ 16 : 66

17 : 77

18 : 88

19 : 99

10 : 00

n : 01

Frequency

n : 03

n : 04

n : 05

n : 06

Temperature

n : 07

n : 08

n : 09

n : 11

n : 12

All LEDs are lighting

None

Water level sensor

Washing motor

Drain pump

Inlet valve

Dispenser

Heater(for 10 sec.)

Fan motor

None

Thermister

Lower Nozzle

Upper Nozzle

Time Save

Intensive

Normal

Eco

Quick

Pre-wash

Wash 1

Wash 2

Rinse 1

Rinse 2

Dry

AUTO OFF S/W

Micro S/W must be ON to operate HEATER

LD-14AT2/LD-14AW2

- 10 -

Inlet Hose

1. Control Panel

2. Vapor vent

3. Door Handle

4. Front Cover

5. Lower Cover

6. Process Monitor

7. Power Switch

8. Drain hose

9. Inlet valve ASM

10. Power Cord

11. Adjust Leg

12. Upper Rack

13. Cutlery Rack

14. Detergent & Rinse Aid Dispenser

15. Vapor Vent Cover

16. Upper Spray Arm

17. Lower Spray Arm

18. Filter ASM

19. Lower Rack

- 11 -

4. PARTS NAME LD-4050W

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