LG LD-1426T, LD-1416T, LD-1415M, LD-1403W, LD-1204W Service Manual

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E-mail : http://LGEservice.com/techsup.html

DISHWASHER

SERVICE MANUAL

NOTE

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

Model : LD-1426T

LD-1416T LD-1415M LD-1403W LD-1204W/LD-1204M

- 3 -

CONTENTS

1. CAUTION

2. SPECIFICATIONS

3. PARTS NAME

4. FEATURES & TECHNICAL EXPLANATION

5. WIRING DIAGRAM

6. PROGRAM CHART (SCHEMATIC DIAGRAM)

7. HOW TO DISASSEMBLE

8. TROUBLE SHOOTING METHODS A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM

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4

5

6

7

17

19

24

35 35 37

9. INSTALLATION INSTRUCTION

10. EXPLODED VIEW

11. REPLACEMENT PART LIST

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41

45

60

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CAUTION !

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.

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2. SPECIFICATION

ITEM

Model Rated Voltage / Frequency Installation Place Settings Product Dimension(mm) Product Weight(Kg)

Door Color Tub Material

Control Rated Power(Watt) Heater Power(Watt) Programs

Upper Rack Position

SPECIFICATION

LD-1426T LD-1416T

14

56

Stainless

Steel

65567

14 14 14 12

600(W) 600(D) 850(H)

Stainless

Steel

Adjustable

LD-1415M LD-1403W LD-1204W/M

AC 240V/50Hz

Free Standing

52

Titanium White

Stainless Steel

Electronic

2210 2100

White

/ Titanium

Siding

Adjustable Lower Rack Racks

Water Consumption Power Consumption (kWh) Operating Time (min)

Fan Dry System Delay Start Function Auto-Off Power Switch Process Monitor Wash Level Operating Water Pressure (Bar)

50% Fold down

Removal Rack

20

(Eco+Rinse)

1.05 1.05 1.05 0.7 0.7 116

(Except drying)

20

(Eco)

145

(Except drying)

50%

Fold down

Nylon Coating

20

(Eco)

145

(Except drying)

Yes Yes Yes Yes

5

0.5~8

100%

Fold down

18

(Eco+Rinse)

84 84

50%

Fold down

20

(Eco)

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3. PARTS NAME

LD-1426T LD-1416T/1415M

LD-1403W/1204W/1204M

1. Control Panel

2. Door Handle(with Handle Deco)

3. Front Cover

4. Lower Cover

5. Process Monitor

6. Power Switch

7. Drain Hose

8. Inlet Valve(or Aqua Stop)

9. Power Cord

The appearance and specifications may vary without notice.

LD-1403W/1204W/1204M

The racks are different each other by model

10. Adjust Leg

11. Upper Rack

12. Cutlery Basket

13. Detergent & Rinse Aid Dispenser

14. Vapor Vent Cover

15. Upper Spray Arm

16. Lower Spray Arm

17. Filter ASM

18. Lower Rack

Inlet Hose

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4. FEATURES & TECHNICAL EXPLANATION

Over 77 ~80

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

• During the high temp. Rinse course, water temperature in a dishwasher reaches

considerably higher than the average rinse temperature in conventional dishwashers(65°C). This is how Rinse course can eliminate some bacteria such as salmonella.

◉,

4-1-2. Turbo Spray System

Extra Hot

Temperature

77°C

80°C

• 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.

Model

LD-1426T LD-1403W LD-1204W/M

LD-1416T LD-1415M

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4-2 Display Panel 4-2-1. LD-1426T

CHILD

LOCK

• Used to lock or unlock the control buttons to prevent all the setting from being changed by a child.

• For locking / unlocking, press Auto and Quick button simultaneously.

PROGRAM

• When you want to select program, press each button.

SPRAY

INTENSITY

• With each press, the level of water jet is changed to “Strong”, “Medium”, and “Soft”.

TIME DELAY

• If you want to delay the start of selected program, press this button before start.

• Pressing the delay time will increase time by 1 hour .

• The delay start time can be adjusted from 1 hour to 19 hours.

EXTRA HOT

/ RINSE+

• With each press, 77℃ extra hot, Rinse+, 77℃ extra hot & Rinse+ is repeated.

HALF LOAD

• In case of small load, use upper or lower rack only to save energy .

• W ith 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 .

BEEP ON / OFF

• The dishwasher must be switched off.

• The beep on/off function can be set by pressing the Half Load and Power button simultaneously for seconds, then a “on” will appear in the time display.

• T o change the setting, press the Half Load button.

• The beep on/off function is automatically canceled when power failure occur.

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POWER

• For operating, press this button first for power on.

• After operating, this button automatically switches off for safety and energy saving.

• In case of irregular surge disturbances to the machine, the power may be automatically turned off for safety.

: Drainage trouble : Problem of overfilling water : Water inlet trouble : Water leakage trouble : Heater trouble

4-2-2. LD-1416T

TRIPLE SPRAY

• With each press, the level of water jet is changed to Strong, Normal and Soft in a sequence.

INDICATOR

• Refill with rinse aid

• Child Lock

TIME LEFT

• Before starting, the display window shows the running time of the selected program.

• After starting, the display window shows the remaining time.

• If the dishwasher has a trouble, the trouble type is displayed.

If this error letters are displayed, please refer to the trouble shooting guide page 35 and follow the guide. ※ “ ” : No error message.

DELAY START

• If you want to delay the start of selected program, press this button before pressing program button.

• Pressing the Delay Start will increase time by 1 hour.

• The delay start time can be adjusted from 1 hour to 19 hours.

RINSE

• Repeated pressing of the Rinse button will select Extra Hot, Rinse+.

• If you select the Extra Hot function, the

operationg temperature will be up to 80℃. (Intensive, Normal, Eco)

• When you select Rinse an additional rinse cycle is added.

PROGRAM

• When you want to select program, press each button.

+

,

CHILD LOCK

• Used to lock or unlock the control buttons to prevent all the setting from being changed by a child.

• This function is

automatically canceled when power failure occur.

• For locking/ unlocking, press Intensive and Normal button for a few seconds simultaneously .

- 9 -

BEEP ON/OFF

• The dishwasher must be switched on.

• The beep on/off function can be set by pressing the Intensive and Pre-wash button simultaneously for a few seconds. Then, a “on” will appear in the time display .

• The beep on/off function

is automatically canceled when power failure occur.

POWER

• For operating, press this button first for power on.

• After operating, this button automatically switches off for safety and energy saving.

• In case of irregular surge disturbance to the machine, the power may be automatically turned off for safety .

: Drainage trouble : Problem of overfilling water : Water inlet trouble : Water leakage trouble : Heater trouble

4-2-3. LD-1415M

INDICATOR

• Refill with rinse aid

• Child Lock

TIME LEFT

• Before starting, the display window shows the running time of the selected program.

• After starting, the display window shows the remaining time.

• If the dishwasher has a trouble, the trouble type is displayed.

If this error letters are displayed, please refer to the trouble shooting guide page 35 and follow the guide. ※ “ ” : No error message.

DELAY START

• If you want to delay the start of selected program, press this button before pressing program button.

• Pressing the Delay Start will increase time by 1 hour.

• The delay start time can be adjusted from 1 hour to 19 hours.

RINSE

• Repeated pressing of the Rinse button will select Extra Hot, Rinse+.

• If you select the Extra Hot function, the

operationg temperature will be up to 80℃. (Intensive, Normal, Eco)

• When you select Rinse an additional rinse cycle is added.

PROGRAM

• When you want to select program, press each button.

+

,

CHILD LOCK

• Used to lock or unlock the control buttons to prevent all the setting from being changed by a child.

• This function is

automatically canceled when power failure occur.

• For locking/ unlocking, press Intensive and Normal button for a few seconds simultaneously .

- 10 -

BEEP ON/OFF

• The dishwasher must be switched on.

• The beep on/off function can be set by pressing the Intensive and Pre-wash button simultaneously for a few seconds. Then, a “on” will appear in the time display .

• The beep on/off function

is automatically canceled when power failure occur.

POWER

• For operating, press this button first for power on.

• After operating, this button automatically switches off for safety and energy saving.

• In case of irregular surge disturbance to the machine, the power may be automatically turned off for safety.

4-2-4. LD-1403W

DELAY START

BUTTON

• 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.

TIME SAVE

• 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.

HALF LOAD

• 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.

POWER SWITCH

BUTTON

• 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.

REMAINING

CHILD LOCK

TIME

• Indication of remaining time

• Self diagnosis and error message display

• 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 .

PROGRAM

• 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.

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RINSE/

SANI

• With each press, rinse+, rinse+ & 77℃ sani rinse, 77℃ sani rinse is repeated.

START/PAUSE

BUTTON

• 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.

4-2-5. LD-1204W/1204M

DELAY START

BUTTON

• 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.

REMAINING TIME

• Indication of remaining time

• Self diagnosis and error message display

• 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

POWER SWITCH

BUTTON

• 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.

CHILD LOCK

• 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 .

PROGRAM

• 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.

- 12 -

RINSE/

SANI

• With each press, rinse+, rinse+ & 77℃ sani rinse, 77℃ sani rinse is repeated.

START/PAUSE

BUTTON

• 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.

4-3 TEST MODE

4-3-1. LD-1426T

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

BUTTON

Intensive+Auto +Power S/W

Intensive KEY

Auto KEY

Eco KEY

Gentle KEY

Quick KEY

Pre-Wash KEY

Spray KEY

Rinse KEY

Time Delay KEY

Half Load KEY

The number of

pushing button

1 TIME

1 TIME 55

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

DISPLAY Load and Checking points DOOR

n0 All LEDs are Lighting not concerned

11

22

33

44

66

77

88

99

n1

n2

n3

n4

Frequency

n6

n7

n8

n9

Temperature

11

12

13

Spray Intensity “Strong”LED is Lighting

Spray Intensity “Medium”LED is Lighting

Spray Intensity “Soft”LED is Lighting

Extra Hot LED is Lighting

Rinse + LED is Lighting

Child lock LED ( ) is Lighting

Rinse refill LED ( ) is Lighting

none

Half Load “Upper”LED is Lighting

Half Load “Lower”LED is Lighting

none

Washing moter

Drain Pump

Inlet valve

Dispenser

Heater(for 10 sec.)

Fan Moter

none

Thermister

Lower Nozzle

Upper Nozzle

AUTO OFF S/W

not concerned

closed

not concerned

closed

not concerned

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4-3-2. LD-1416T/1415M

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

BUTTON

Quick + Pre-wash + POWER S/W

Spray In tensity KEY

Rinse KEY

Intensive KEY

Normal KEY

Eco KEY

Quick KEY

Pre-wash KEY

Start / Pause KEY

The number of

pushing button

1 TIME

2 TIME

3 TIME

4 TIME

5 TIME

6 TIME

7 TIME

8 TIME

9 TIME

10 TIME

11 TIME

12 TIME

DISPLAY Load and Checking points DOOR

n : 1H

Temperature

U00

11 : 11

12 : 22

13 : 33

14 : 44

15 : 55

16 : 66

17 : 77

n : 11

n : 12

n : 13

Frequency

n : 15

n : 16

n : 18

n : 19

n : 1A

n : 1B

OFF

Washing Motor

Heater(for 10 sec.)

LQC Test Mode Reset upper nozzle 5s *lower nozzle 30s *upper nozzle 15s

rotation: On Heater(70 )

All LEDs are lighting

None Strong, Normal, Soft

Drain Pump Intensive LED

Inlet Valve Normal LED

Dispenser Eco LED

Fan Motor Pre-wash LED

None

Lower Nozzle

Upper Nozzle

Power OFF

Only LD-1416T

Extra Hot, Rinse+ LED

Quick LED

Rinse, Child-Lock LED

Wash, Rinse, Dry LED

None

not concerned

closed

not concerned

closed

not concerned

※

CHECK MODE

BUTTON OPERATION

Intensive + Pre-wash

Eco + Pre-wash

Quick + Pre-wash

Micro S/W must be ON to operate HEATER

Buzz On/Off

Display Inner Temperature

Display Water Supply Frequency

- 14 -

4-3-3. LD-1403W

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

BUTTON

Quick + Pre-wash + POWER S/W

Delay start KEY

T-Save KEY

Intensive KEY

Normal KEY

Eco KEY

Gentle KEY

Quick KEY

Pre-wash KEY

Half Load KEY

Rinse KEY

Start / Pause KEY

The number of

pushing button

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

DISPLAY Load and Checking points DOOR

n : 0H

11 : 11

12 : 22

13 : 33

14 : 44

15 : 55

16 : 66

17 : 77

18 : 88

19 : 99

10 : 00

n : 01

Frequency

n : 03

n : 04

n : 05

n : 06

n : 07

n : 08

n : 09

Temperature

n : 11

n : 12

OFF

Water level sensor Intensive LED

Washing Motor Normal LED

Heater(for 10 sec.)

Lower Nozzle

Upper Nozzle

All LEDs are lighting

None T-save LED

Drain Pump Eco LED

Inlet Valve Gentle LED

Dispenser Quick LED

Fan Motor

None Rinse 1 LED

Thermister

Power OFF

Pre-wash LED

Wash, Rinse, Dry LED

Rinse 2 LED

Dry LED

OFF

not concerned

closed

not concerned

closed

not concerned

※

CHECK MODE

BUTTON OPERATION

T-save + Half Load

T-save + Rinse

Micro S/W must be ON to operate HEATER

Display Water Supply Frequency

Display Inner Temperature

- 15 -- 15 -

4-3-4. LD-1204W/1204M

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

BUTTON

Quick + Pre-wash + POWER S/W

Delay Start KEY

Program KEY

Half Load KEY

Rinse KEY

Start / Pause KEY

The number of

pushing button

1 TIME

2 TIME

3 TIME

4 TIME

5 TIME

6 TIME

7 TIME

8 TIME

9 TIME

10 TIME

11 TIME

12 TIME

DISPLAY Load and Checking points DOOR

n : 1H

Temperature

U00

11 : 11

12 : 22

13 : 33

14 : 44

n : 11

n : 12

n : 13

Frequency

n : 15

n : 16

n : 18

n : 19

n : 1A

n : 1B

OFF

Washing Motor Intensive LED

Heater(for 10 sec.)

LQC Test Mode Reset *lower nozzle 30s *upper nozzle 15s

rotation: On Heater(70 )

All LEDs are lighting

None Intensive+ LED

Drain Pump Normal LED

Inlet Valve Eco LED

Dispenser Gentle LED

Fan Motor Pre-wash LED

None wash LED

Lower Nozzle Rinse LED

Upper Nozzle

upper nozzle 5s

Power OFF

Quick LED

Dry LED

closed

not concerned

closed

not concerned

closed

not concerned

※

CHECK MODE

BUTTON OPERATION

Program + Half Load

Program + Rinse

Micro S/W must be ON to operate HEATER

Display Water Supply Frequency

Display Inner Temperature

- 16 -

5. WIRING DIAGRAM

5-1. LD-1426T

5-2. LD-1416T

- 17 -- 17 -

5-3. LD-1415M

5-4. LD-1403W/1203W/1203M

- 18 -- 18 -

6. PROGRAM CHART(SCHEMATIC DIAGRAM)

6-1. LD-1426T

- 19 -

6-2. LD-1416T

- 20 -- 20 -

LG LD-1426T, LD-1416T, LD-1415M, LD-1403W, LD-1204W Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual