LG LDS5811WW, LDF8812WW, LDF7811WW, LDF6810WW, LDF7810WW Service Manual

P/No. : MFL37554801

DISHWASHER

SERVICE MANUAL

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

NOTE

MODEL : LDF6810(WW,BB,ST), LDF7810(WW,BB,ST), LDF7811(WW,BB,ST)

LDS5811(WW,BB,ST), LDF8812(WW,BB,ST) LDF6810(WW,BB,ST) / 01, LDF7810(WW,BB,ST) / 01 LDF7811(WW,BB,ST) / 01, LDS5811(WW,BB,ST) / 01 LDF6810(WW,BB,ST) / 02, LDS5811(WW,BB,ST) / 02 LDF8812(WW,BB,ST) / 01

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

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

3. WIRING DIAGRAM........................................................................................................ 6

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

5. PARTS NAME................................................................................................................ 18

6. PROGRAM CHART ..................................................................................................... 22

7. HOW TO DISASSEMBLE ............................................................................................ 26

8. TROUBLE SHOOTING METHODS.............................................................................. 35

A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE...........35

B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM........................................... 37

9. INSTALLATION INSTRUCTION ................................................................................... 41

10. EXPLODED VIEW .......................................................................................................48

11. REPLACEMENT PART LIST ........................................................................................59

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 120V/60Hz

Installation Built-In

Place Settings 16

Product Dimension(in) 23 7/8

x 25 x 33 7/8

Product Weight(lbs) 7811, 7810, 8812 series : 115lbs, 5811/ 6810 series : 110lbs

Door Color White, Black, Stainless

Tub Material Stainless Steel

Control Electronic

Rated Power(Watt) 1,350

Heater Power(Watt) 1,200

Programs 7811, 7810, 5811, 8812 series : 6, 6810 series : 5

Upper Rack Position 7811, 7810, 8812 series : Adjustable, 6810 series : manual

Lower Rack 50% Fold down

Water Consumption

7811,7810 , 6810, 5811 series : 21-30 (Normal)

8812, 7811/ 01, 7810 / 01, 6810 / 01, 5811/ 01 series : 10-26 (Normal)

Power Consumption(kWh/year)

7811/ 7810/ 6810 / 5811 series : 352-370

8812, 7811/ 01, 7810 / 01, 6810 / 01, 5811/ 01 series : 285-310

Operating Time (min) 101-135 (Normal)

Fan Dry System Yes

Delay Start Function Yes

Auto-Off Power Switch Yes

Process Monitor Yes

Wash Level 5

Racks Nylon Coating

Operating Water Pressure (Bar) 20-120 (140-830kPa)

ITEM

SPECIFICATION

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1. 7811 / 7810 / 6810 serise

3. WIRING DIAGRAM

2. 8812 serise

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4. FEATURES & TECHNICAL EXPLANATION

4-1. Product Features

If you raise the Upper Rack, you can load large dishes in the Lower Rack. (Max. 14 in.) The tall tub provides large dishes loading as well as large capacity. LG dishwashers let you load oversized items in the Lower and Upper Rack.

Newly introduced Slim Direct Inverter motor is inverter-controlled. Speed is controlled based on program selection. It also offers high energy efficiency to minimize energy loss.

This is one of the best performance solutions for drying dishes because it minimizes venting humid air to the outside of the dishwasher. In addition, this system ensures better drying results compared to the condensing drying system.

Because of alternating water spray between the Upper and Lower Rack, the water pressure allows superior performance and reduced consumption of water and electricity.

For best wash results, the self-cleaning filter system continuously cleans the water as it circulates. Your LG dishwasher has a self-cleaning filter that grinds food into small particles before it goes down the drain.

Ultra Big Capacity

Slim Direct Motor

TM

Hybrid Drying System

Vario Spray System

Self Cleaning Filter

Moist

Air

Dry

Air

Mixed

Air

to Upper Arm

to Lower Arm

Soil Sensor

to Drain

Fine Mesh

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4-2. Display Panel

4-2-1. LDF 7811/7810 Series

PROGRAM

• Press the program that corresponds to your desired wash cycle.

CANCEL

• To cancel a running

program, open the door, then press and hold the Normal and Delicate buttons for 3 seconds.

INDICATOR

• Child lock: Lamp will turn on when

Child Lock setting is on.

• Rinse Aid: Refill with Rinse aid when Lamp turns on.

This program is for very heavily soiled loads including pots, pans and casserole dishes which may have dry food residue.

This program is for very heavily soiled loads

This program is for normally soiled everyday loads.

This program is for washing delicate items like glasses.

This program is for that quick wash of lightly soiled recently used dishes and cutlery.

This program is for very lightly soiled loads.

Soak

Normal

Quick Wash

Rinse Only

Delicate

Power Scrub

Control panel may vary on some models.

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SPRAY

(INTENSITY)

• Repeated pressing of the Spray button will select

Strong, Medium or Soft.

DELAY START

• If you want to delay the start of a selected program, press the Delay Start button.

• Each press of Delay Start will delay the start of the cycle by one hour.

• The delay start time can be adjusted from 1 to 24 hours in one-hour increment.

HALF LOAD

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

• Each press of the

Half Load

button cycles between upper rack only and lower rack only.

• If you don't press Half Load, the dishwasher runs normally, i.e, operation of upper and lower spray arm alternating periodically.

POWER

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

• After operating, the power automatically switches off for safety and economy.

• In case of an unusual Power surge or disturbance, the power may be automatically turned off for safety.

CHILD LOCK

• Lock the control buttons to prevent the settings from being changed.

• To lock/unlock, press Spray and Rinse buttons simultaneously for 3 seconds with door open.

SANITARY/

EXTRA RINSE

• Repeated pressing of the Rinse button will select Sanitary, Extra Rinse or both.

• If you select the Sanitary function, the temperature of Heating Rinse can reach 161

(72 ).

• When you select

Extra

Rinse, an additional

rinse cycle is added.

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SPRAY

(INTENSITY)

• Repeated pressing of the Spray button will select

Strong, Medium or Soft.

CHILD LOCK

• Lock the control buttons to prevent the settings from being changed.

• To lock/unlock, press Spray and Rinse buttons simultaneously for 3 seconds.

SANITARY/

EXTRA RINSE

• Repeated pressing of the Rinse button will select Sanitary, Extra Rinse or both.

• If you select the

Sanitary

function, the temperature of Heating Rinse can reach 161

(72 ).

• When you select

Extra

Rinse, an additional

rinse cycle is added.

HALF LOAD

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

• Each press of the

Half Load

button cycles between upper rack only and lower rack only.

• If you don't press Half Load, the dishwasher runs normally, i.e, operation of upper and lower spray arm alternating periodically.

4-2-2. LDF 5811 Series

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INDICATOR

• Child lock: Lamp will turn on when

Child Lock

setting is on.

• Rinse Aid: Refill with Rinse aid when Lamp turns on.

PROCESSING

INDICATOR

• Current program phase is indicated.

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.

PROGRAM

• Press the program that corresponds to your desired wash cycle.

CANCEL

• To cancel a running program, press and hold the

Normal and

Delicate buttons

for 3 seconds.

DELAY START

• If you want to delay the start of a selected program, press the Delay Start button.

• Each press of

Delay Start will

delay the start of the cycle by one hour.

• The delay start time can be adjusted from 1 to 12 hours in one-hour increment.

POWER

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

• After operating, the power automatically switches off for safety and economy.

• In case of an unusual Power surge or disturbance, the power may be automatically turned off for safety.

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PROGRAM

• Press the program that corresponds to your desired wash cycle.

CANCEL

• To cancel a running

program, open the door, then press and hold the

Power Scrub and Normal buttons for 3

seconds.

INDICATOR

• Child lock: Lamp will turn on when

Child Lock setting is on.

• Rinse Aid: Refill with Rinse aid when Lamp turns on.

This program is for very heavily soiled loads

This program is for normally soiled everyday loads.

This program is for washing delicate items like glasses.

This program is for very lightly soiled loads.

This program is to wash some items loaded on the upper rack.

Normal

Rinse Only

Upper Only

Delicate

Power Scrub

Control panel may vary on some models.

4-2-3. LDF 6810 Series

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DELAY START

• If you want to delay the start of a selected program, press the Delay Start button.

• Each press of Delay Start will delay the start of the cycle by one hour.

• The delay start time can be adjusted from 1 to 12 hours in one-hour increment.

POWER

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

• After operating, the power automatically switches off for safety and economy.

• In case of an unusual Power surge or disturbance, the power may be automatically turned off for safety.

CHILD LOCK

• Lock the control buttons to prevent the settings from being changed.

• To lock/unlock, press Delicate and Rinse Only buttons simultaneously for 3 seconds with door open.

SANITARY/

EXTRA RINSE

• Repeated pressing of the Rinse button will select Sanitary, Extra Rinse or both.

• If you select the Sanitary function, the temperature of Heating Rinse can reach 161

(72 ).

• When you select

Extra

Rinse, an additional

rinse cycle is added.

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Control panel may vary on some models.

4-2-4. LDF 8812 Series

INDICATOR

• Child Lock( ): Lamp will turn on when

Child Lock setting is on.

• Rinse Aid( ): Refill with rinse aid when Lamp turns on.

This program is for very heavily soiled loads including pots, pans, and casserole dishes, which may have dry food residue.

This program is for very heavily soiled loads

This program is for normally soiled, everyday loads.

This program is for washing delicate items like glasses.

This program is for that quick wash of lightly soiled, recently used dishes and cutlery.

This program is for very lightly soiled loads.

Soak

Normal

Quick

Rinse Only

Delicate

Power Scrub

CANCEL

• To cancel a running program, open the door, then press and hold the Normal and Delicate buttons for 3 seconds.

• The drain pump will be activated and the cycle will be canceled.

PROGRAM

• Press the program that

corresponds to your desired wash cycle.

Front Display

WASH

Process Indicator (SignaLight TM)

RINSE DRY CLEAN

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HALF LOAD

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

• Each press of the Half Load button cycles between upper rack only and lower rack only.

• If you don't press Half Load, the dishwasher runs normally, i.e, operation of upper and lower spray arms alternate periodically.

CHILD LOCK

• Lock the control buttons during cycle operation to prevent the settings from being changed.

• To lock/unlock, press Spray and Rinse buttons simultaneously for 3 seconds with door open.

SANITARY/

EXTRA RINSE

• Repeated pressing of the Rinse button

will select Sanitary( ), Extra Rinse( ) or both.

• If you select the Sanitary Function,

the Sanitary Light blinks when the water temperature meet the sanitary temperature level. and illuminates at the end of cycle when conditions have been met to achieve sanitization.

• When you select Extra Rinse, an

additional rinse cycle is added.

SPRAY

(INTENSITY)

• Repeated pressing of the Spray button will select Strong( ), Medium( ) or Soft( ).

DELAY START

• If you want to delay the start of a selected program, press the Delay Start button.

• Each press of Delay Start will delay the start of the cycle by one additional hour.

• The delay start time can be adjusted from 1 to 24 hours in one-hour increments.

POWER

• After operating, the power automatically switches off after 4 minutes for safety and economy.

• In case of an unusual Power surge or disturbance, the power may be automatically turned off for safety.

4-3. TEST MODE

4-3-1. LDF 7811/7810/8812 LDS 5811 Series

CHECK PROGRAM

BUTTON

The number of pushing button

Front Display

To p

Display

Load and Checking points

Door open/

closed

Rinse + Time Delay + POWER S/W

Soak

Power Scrub

Normal

Delicate

Quick Wash

Rinse Only

Spray

Rinse

Half Load

Time Delay

Normal Water Level : 315 Pure Water : more than 229

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

31

32

33

34

35

36

37

38

39

3A

3b

3c

n : 3H/U:023H/U2

11

22

33

44

55

66

77

88

99

1 : 11

2 : 22

3 : 33

4 : 44

5 : 55

6 : 66

7 : 77

8 : 88

9 : 99

Soil Level

n : 02

n : 03

Frequency

n : 05

n : 06

n : 07

n : 08

Temp. (

)

n : 0A

n : 0b

n : 0c

Soil Sensor

Wash Pump

Drain Pump

Inlet Valve

Dispenser

Heater

(for 10 sec)

Fan

Thermistor

Lower Nozzle

(VARIO)

Upper Nozzle

(VARIO)

Wash-Drain-

Water Supply

Auto-Off

Delay Start

Child Lock +

Rinse Aid

Wash

Rinse

Dry

Wash-Rinse-Dry

Strong-Soft

Sanitary-Extra

Upper-Lower

Soak-Normal

Delicate-Rinse

Only

Rinse Aid

All LEDs are lighting Both

All LEDs are lighting

Strong/Medium/Soft

Sanitary-Extra Rinse

Upper-Lower

Both

Closed

Both

Closed

Both

Closed

Supply water before operating the Test Mode.

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Normal Water Level : 295

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4-3-2. LDF 6810 Series

CHECK PROGRAM

BUTTON

The number of pushing button

To p

Display

Load and Checking points

Door open/

closed

Upper Only + Time Delay + POWER

Power Scrub

Normal

Delicate

Rinse Only

Upper Only

Rinse

Time Delay

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

31

32

33

34

35

36

37

38

39

3A

3b

3c

3H/U2

11

22

33

44

55

66

Wash Pump

Drain Pump

Inlet Valve

Dispenser

Heater

(for 10 sec)

Fan

Thermistor

Lower Nozzle

(VARIO)

Upper Nozzle

(VARIO)

Wash-Drain-

Water Supply

Auto-Off

Child Lock + Rinse Aid

Sanitary-Extra

Power Scrub +

Normal + Delicate

Rinse Only +

Upper Only

Rinse Aid

All LEDs are lighting

Both

Closed

Both

Closed

Both

Closed

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5. PARTS NAME

Control Panel Front Display Door Handle Front Cover Lower Cover Leveling Foot Side Cabinet Base Top Spray Arm Upper Spray Arm

Removable Tines Lower Spray Arm Detergent & Rinse Aid Dispenser Vapor Vent Cover Upper Rack Cutlery Basket Lower Rack Top Display Power Button

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

INSTALL BRACKET WOOD SCREW LEVELING KIT

5-1. LDF 7811/7810 Series

- 19 -

Control Panel Front Display Door Handle Power Button Front Cover Lower Cover Leveling Foot Side Cabinet Base

Top Spray Arm Upper Spray Arm Removable Tines Lower Spray Arm Detergent & Rinse Aid Dispenser Vapor Vent Cover Upper Rack Cutlery Basket Lower Rack

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

5-2. LDF 5811 Series

INSTALL BRACKET WOOD SCREW LEVELING KIT

- 20 -

Control Panel Door Handle Front Cover Lower Cover Leveling Foot Side Cabinet Base Top Spray Arm Upper Spray Arm

Lower Spray Arm Detergent & Rinse Aid Dispenser Vapor Vent Cover Upper Rack Cutlery Basket Lower Rack Top Display Power Button

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

5-3. LDF 6810 Series

INSTALL BRACKET WOOD SCREW LEVELING KIT

- 21 -

Control Panel

Front Display (SignaLightTM) Door Handle Front Cover Lower Cover Leveling Foot Side Cabinet Base Top Spray Arm Upper Spray Arm

Removable Tines Lower Spray Arm Detergent & Rinse Aid Dispenser Vapor Vent Cover Tub Lamp (IllumiTubTM) Upper Rack Cutlery Basket Lower Rack Top Display Power Button

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

5-3. LDF 8812 Series

INSTALL BRACKET WOOD SCREW LEVELING KIT

IllumiTubTMcomes on when the door is opened. It goes off when the door is closed.

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6. PROGRAM CHART(SCHEMATIC DIAGRAM)

Drain A

26 10 10 46 10 10 30

30

49 657218 10 10 38 10 10 26

30

63 68

10 10 10 30

10 20

30

60 65

10 10

61

22 10 26

30

49 68

86 20

20

46 60

10

30 8 30 3 30

W/Motor

Drain Pump

Inlet Valve

Heater

Vario Motor

Fan Motor

Dispenser

Thermal Act

Auto Off S/W

Program chart

Rinse

Dry

Main Wash

Wash

Rinse 1 Rinse 2 Heating Rinse Dry

Program

Wash

Rinse

Stop

Wash

Water Supply

Wash

Drain

Heating A

Heating B

Dry

Drain D

Drain

Stop

Drain

Water Supply

Stop

Drain C

Drain

Water Supply

Rinse

Drain

Drain B Drain B Drain C

Drain

Stop

Drain

Stop

Pre Wash 1 Pre Wash 2 Pre Wash 3

Drain B Drain B

Wash

Drain

Stop

Water Supply

Wash

Power Scrub

Soak

Rinse Only

Quick

Delicate

NORMAL

6-1. LDF 7811/7810/8812 LDS 5811 Series

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Drain A

18 10 10 38 10 10 26

30

63 68

10 10 10 30

10 20

30

60 65

10 10

61

22 10 26

30

49 68

86 20

20

46 60

10

30 8 30 3 30

W/Motor

Drain Pump

Inlet Valve

Heater

Vario Motor

Fan Motor

Dispenser

Thermal Act

Auto Off S/W

Program chart

Rinse

Dry

Main Wash

Wash

Rinse 1 Rinse 2 Heating Rinse Dry

Program

Wash

Rinse

Stop

Wash

Water Supply

Wash

Drain

Heating A

Heating B

Dry

Drain D

Drain

Stop

Drain

Water Supply

Stop

Drain C

Drain

Water Supply

Rinse

Drain

Drain B Drain B Drain C

Drain

Stop

Drain

Stop

Pre Wash 1 Pre Wash 2 Pre Wash 3

Drain B Drain B

Wash

Drain

Stop

Water Supply

Wash

Power Scrub

Rinse Only

Quick

Delicate

NORMAL

6-2. LDF 6810 Series

- 24 -

Program chart

6-3. LDF 7810 / 01, 7811 / 01, 8812, LDS 5811 / 01 Series

LDF 8812 / 01, LDS 5811 / 02 Series

- 25 -

Program chart

6-4. LDF 6810 / 01 Series, LDF 6810 / 02 Series

- 26 -

BEFORE DISASSEMBLING THE DISHWASHER ;

1) Remove the cord 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) Remove the inlet hose and drain hose connetion to avoid the hose damages.

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

7. HOW TO DISASSEMBLE

7-1. FULL DISASSEMBLE

1. Lower Cover and Lower Felt

1) Remove the front 2 screws.

2) Pull the Felt.

3) Remove the Inlet Hose and Power Supply Cable.

2. Cabinet and Tub Felt

1) Cabinet-R

Remove front 2 screws.

Remove rear 3 screws.

2)

Cabinet-L

Remove front 2 screws.

Remove rear 3 screws.

3)

Tub Felt

Lower Felt

Lower Cover

Tub Felt

Cabinet-L

Cabinet-R

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Control Panel Front Cover

3-1. Door Assembly

(LDF 6810/7811/7810/8812 Series)

1) Front Cover

Open the door.

Remove 12 screws(stainless).

2) Control Panel Assembly

Remove 2 screws(Stainless).

Remove the wire connections.

Be sure the wiring should not be changed in reassembling

Remove the Latch assembly.

Remove the Front Display.

Remove 8 screws for Controller.

Controller

Front Display

Latch Assembly

Controller

- 28 -

Control Panel Front Cover

3-2. Door Assembly

(LDF 5811 Series)

1) Front Cover

Open the door.

Remove 6 screws(Stainless).

2) Control Panel Assembly

Remove 8 screws(Stainless).

Remove the wire connections. Be sure the wiring should not be

changed in reassembling

Remove the Latch assembly.

Remove 8 screws for Controller.

Controller

Latch Assembly

Controller

- 29 -

Hinge Bracket

Hinge Spring

3) Fan Assembly

Open the Door. Remove 4 screws and a earth screw for Door Bracket.

Remove the wire connector.

Ramove the Air Duct.

Ramove Hose with Clamp.(Some Moels)

Turn the Inner Cover counterclockwise.

4) Detergent Dispenser

Close the door

Remove the wire connections.

Remove 6 screws with brackets. Push the Detergent slowly pulling up the the Flange by Standard Screwdriver.

5) Door Spring (Right & Left)

Push the Spring upwards and take it off from the Hinge Bracket.

Be careful not to be injured by the sharpedge of Tub.

Take off the Hinge Link from the Hinge.

6) Door Liner

Open the door.

Pull the Door Liner and take it off from the Hinge Supporter.

Door Liner Assembly

Hinge Supporter

Fan Assembly

Air Vent

Door Bracket

Frange

Hose

Gasket

Inner Cover

Detergent Dispenser

- 30 -

Lead Wire Holer Hook

Lead Wire Holer

Lower Frame

4. Lower Frame

1) Press the holder hook as shown in figure.

2) Remove 4 screws.

6. Drain Hose Holder

1) Press the holder hook as shown in figure.

2) Pull the Drain Hose and remove the Drain Hose Holder.

5. Put the Dishwasher upside down.

Drain Hose Holder

Drain Hose