LG LD-2040W1, LD-2040M1 Service Manual

DISHWASHER

SERVICE MANUAL

BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY
FOR SAFETY AND CORRECT SERVICES.

NOTE

MODEL : LD-2040W1

LD-2040M1

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

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

3. PARTS NAME.................................................................................................................. 6

4. FEATURES & TECHNICAL EXPLANATION ................................................................... 7

5. WIRING DIAGRAM...................................................................................................... 10

6. PROGRAM CHART (SCHEMATIC DIAGRAM) ............................................................ 11

7. HOW TO DISASSEMBLE ............................................................................................ 12

8. TROUBLE SHOOTING METHODS.............................................................................. 22

A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE.......... 22

B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM........................................... 24

9. INSTALLATION INSTRUCTION ................................................................................... 28

10. EXPLODED VIEW .......................................................................................................32

CONTENTS

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�

DISCONNECT POWER CORD BEFORE SERVICING

�

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 !

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2. SPECIFICATION

Rated Voltage / Frequency AC 240V/50Hz

Installation Free Standing

Place Settings 12

Product Dimension(mm) 600(W)× 600(D)× 850(H)

Product Weight(Kg) 52

Door Color Stainless Steel

Tub Material Stainless Steel

Control Electronic

Rated Power(Watt) 2,210

Heater Power(Watt) 2,100

Programs 7

Upper Rack Sliding Adjustable, Nylon Coating

Lower Rack 50% Fold down, Nylon Coating

Water Consumption(ℓ) 20 (Eco 50)

Power Consumption (kWh/year) 0.7 (Eco 50)

Operating Time (min) 84 (Eco 50)

Fan Dry System Yes

Delay Start Function Yes

Auto-Off Power Switch Yes

Process Monitor Yes

Wash Level 5

Operating Water Pressure (Bar) 0.5 ~ 8

ITEM

SPECIFICATION

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3. PARTS NAME

Inlet Hose

1. Vapor vent

2. Control Panel

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

※ The appearance and specifications may be varied without notice according to localities.

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4. FEATURES & TECHNICAL EXPLANATION

4-1 New Technology Introduction

• 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.

4-1-1. High Temperature Rinsing (Extra Hot function)

• 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.

4-1-2. Turbo Spray System

4-2 Display Panel

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• 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.

• 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.

• 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.

DELAY START

BUTTON

• Indication of
remaining time

• Self diagnosis and
error message
display

REMAINING TIME

POWER SWITCH

BUTTON

HALF LOAD

• When power is on,
program is
automatically set to

Eco 65℃.

• If you want to change
the program, press the
button and set the
program you want to.

PROGRAM

• With each press,
rinse+, rinse+ &

77℃ sani rinse,
77℃ sani rinse is

repeated.

RINSE/

SANI

• 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
Program button
simultaneously.

CHILD LOCK

• 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

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4.3 TEST MODE

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

※

CHECK MODE

BUTTON

BUTTON OPERATION

Program + Half Load

Program + Rinse

Display Water Supply Frequency

Display Inner Temperature

The number of

pushing button

DISPL

AY Load and Checking points Door

Micro S/W must be ON to operate HEATER

Half Load + Rinse
+ POWER S/W

Delay Start KEY

Program KEY

Half Load KEY

Rinse KEY

Start/Pause Key

1 TIME

1 TIME

1 TIME

1 TIME

1 TIME

1 TIME

2 TIME

3 TIME

4 TIME

5 TIME

6 TIME

7 TIME

8 TIME

9 TIME

10 TIME

11 TIME

n : 1H ?? U100

11 : 11

12 : 22

13 : 33

14 : 44

n : 11

n : 12

n : 13

Frequency

n : 15

n : 16

Temperature

n : 18

n : 19

n : 1A

n : 1b

All LEDs are lighting closed

All LEDs are lighting

not concerned

not concerned

not concerned

not concerned

All LEDs are lighting

All LEDs are lighting

All LEDs are lighting

None

Intensive+

closed

closed

not concerned

closed

closed

closed

closed

closed

closed

closed

closed

closed

Washing Motor

Drain Pump

Inlet Valve

Dispenser

Heater(for 10 sec.)

Fan Motor

None

Lower Nozzle

Upper Nozzle

Operate C1 mode(for 1 min.)

??

Drain(for 42 Sec.)

?? Supply water

Intensive

Eco 65?

Eco 50?

Gentle

Quick

Pre-wash

Wash

Rinse

Dry

12 TIME Power OFF AUTO OFF

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5. WIRING DIAGRAM

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6. PROGRAM CHART(SCHEMATIC DIAGRAM)

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BEFORE DISASSEMBLING THE DISHWASHER ;

1) Remove the plug from electric outlet to avoid electric shock.

2) Close the Water Tap(faucet).

3) Remove all dishes and items in the dishwasher.

4) Remove the Lower Rack and the Upper Rack.

5) In case of the water softner assembly model, open the water softner cap to flow out the
water to sump and drain to avoid the floor wet.

6) If necessary, remove the inlet hose and drain hose to avoid the hose damages.

7) Prepare some towels to avoid floor wet by the water left in the dishwasher.

7. HOW TO DISASSEMBLE

7-1. FULL DISASSEMBLE

1. Top Table

1) Remove the rear 2 screws.

2) Pull and lift the top table.

2. Low Cover

3. Cabinet-R/L

1) Cabinet-R

① Remove front 4 screws.

② Remove rear 3 screws.

2) Cabinet-L

① Remove front 4 screws.

② Remove rear 3 screws.