LG LDF 7810WW Service Manual
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DISHWASHER
SERVICE MANUAL
NOTE
BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY
FOR SAFETY AND CORRECT SERVICES.
MODEL : LDF 7810WW / LDF 7810BB / LDF 7810ST
MODEL :
LDF 7811WW / LDF 7811BB / LDF 7811ST
LDS 5811WW / LDS 5811BB / LDS 5811ST

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Summary of Contents for LG LDF 7810WW

  • Page 1 NOTE BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY FOR SAFETY AND CORRECT SERVICES. MODEL : LDF 7810WW / LDF 7810BB / LDF 7810ST MODEL : LDF 7811WW / LDF 7811BB / LDF 7811ST LDS 5811WW / LDS 5811BB / LDS 5811ST...
  • Page 2: Table Of Contents

    CONTENTS 1. CAUTION......................... 4 2. SPECIFICATIONS ......................5 3. WIRING DIAGRAM......................6 4. FEATURES & TECHNICAL EXPLANATION ..............7 5. PARTS NAME ........................ 13 6. PROGRAM CHART ..................... 15 7. HOW TO DISASSEMBLE .................... 16 8. TROUBLE SHOOTING METHODS ................25 A.
  • Page 3: Caution

    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.
  • Page 4: Specifications

    2. SPECIFICATION SPECIFICATION ITEM Rated Voltage / Frequency AC 120V/60Hz Installation Built-In Place Settings 〃 〃 〃 Product Dimension(in) 23 7/8 x 25 x 33 7/8 Product Weight(lbs) 7811/7810 series : 115lbs, 5811 series : 110lbs Door Color White, Black, Stainless Tub Material Stainless Steel Control...
  • Page 5: Wiring Diagram

    3. WIRING DIAGRAM - 6 -...
  • Page 6: Features & Technical Explanation

    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. Slim Direct Inverter Motor ■ ■...
  • Page 7: Display Panel

    4-2. Display Panel 4-2-1. LDF 7811/7810 Series ■ ■ Control panel may vary on some models. PROGRAM • Press the program that corresponds to your desired wash cycle. INDICATOR • Child lock: Lamp will turn on when Child Lock setting is on. •...
  • Page 8: Delay Start

    SPRAY DELAY START POWER (INTENSITY) • Repeated pressing of the • If you want to delay the start of • For operating, press this Spray button will select a selected program, press the button first for power on. Strong, Medium or Delay Start button.
  • Page 9 4-2-2. LDF 5811 Series SPRAY (INTENSITY) • Repeated pressing of the Spray button will select Strong, Medium or Soft. Strong Medium Sanitary Upper Extra Soft Lower Rinse Spray Rinse Half Load SANITARY/ CHILD LOCK HALF LOAD EXTRA RINSE • Lock the control buttons •...
  • Page 10 PROCESSING INDICATOR TIME LEFT INDICATOR • Child lock: Lamp will turn • Current program • Before starting, the display window shows on when Child Lock phase is indicated. the running time of the selected program. setting is on. • After starting, the display window shows •...
  • Page 11 4.3 TEST MODE CHECK PROGRAM The number of Door open/ BUTTON Front Display Load and Checking points pushing button Display closed Rinse + Time Delay + 1 TIME 3H/U2 n : 3H/U:02 All LEDs are lighting Both POWER S/W Soak 1 TIME 1 : 11 All LEDs are lighting...
  • Page 12: Parts Name

    5. PARTS NAME 5-1. LDF 7811/7810 Series � Control Panel � Removable Tines � Front Display � Lower Spray Arm � Door Handle � Detergent & Rinse Aid Dispenser � Front Cover � Vapor Vent Cover � Lower Cover � Upper Rack �...
  • Page 13 4-2. LDF 5811 Series � Control Panel � Top Spray Arm � Front Display � Upper Spray Arm � Door Handle � Removable Tines � Power Button � Lower Spray Arm � Front Cover � Detergent & Rinse Aid Dispenser �...
  • Page 14: Program Chart

    6. PROGRAM CHART(SCHEMATIC DIAGRAM) Drain Stop Water Supply Wash Stop Drain Wash Drain Wash Drain Water Supply Drain Water Supply Wash Stop Drain Wash Drain Wash Drain Water Supply Drain Water Supply Wash Stop Drain Wash Drain Wash Drain Water Supply Drain Water Supply Wash...
  • Page 15: How To Disassemble

    7. HOW TO DISASSEMBLE 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.
  • Page 16: Door Assembly

    3-1. Door Assembly (LDF7811/7810 Series) 1) Front Cover Open the door. Remove 12 screws(stainless). 2) Control Panel Assembly Remove 2 screws(Stainless). Remove the wire connections. Control Panel Front Cover Be sure the wiring should not be changed in reassembling Remove the Latch assembly. Remove the Front Display.
  • Page 17 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. Control Panel Front Cover Be sure the wiring should not be changed in reassembling Remove the Latch assembly.
  • Page 18 3) Fan Assembly Open the door. Gasket Inner Cover Remove 4 screws and a earth screw for Detergent Dispenser Door Bracket. Fan Assembly Remove the wire connetions. Remove the Air Duct. Turn the Inner Cover counterclockwise. Flange 4) Detergent Dispenser Air Duct Close the door Remove the wire connections.
  • Page 19: Lower Frame

    4. Lower Frame 1) Press the holder hook as shown in figure. 2) Remove 4 screws. Lower Frame Lead Wire Holer Lead Wire Holer Hook 5. Put the Dishwasher upside down. 6. Drain Hose Holder 1) Press the holder hook as shown in figure. 2) Pull the Drain Hose and remove the Drain Hose Holder.
  • Page 20 7. Base Cover Cabinet Base 1) Remove 2 screws. Base Cover 2) Pull the Base Cover out. 8. Harness & Hose Assembly 1) Remove the wiring connections. 2) Remove the Hose connections from Sump Assembly. You can see the information of Wiring Diagram at the back of Lower Cover.
  • Page 21: Inlet Valve

    9. Cabinet Base 1) Remove 8 screws. Cabinet Base 2) Lift it upward. 10. Inlet Valve 1) You can disassemble the lnlet Valve by Cabinet Base removing the 2 screws. Inlet Valve 11. Air Braker Assembly 1) Disconnect the 3 hoses assembly. 2) Turn the Air Braker Nut counterclockwise.
  • Page 22 12. Sump Assembly Sump Holder Remove 2 screws. Remove the Sump Holder and push the Sump Assembly down with pulling aside Hook. Be careful not to drop the Sump Assembly to the bottom. Hook Sump Assembly 1) Heater & Drain Motor Pull the Heater out of the Sump after releasing the nut.
  • Page 23 When you reassemble the Sump Assembly, be careful not to kink, tear and take off the seals. 13. Holder Supporter, Tub Packing and Hinge Supporter Assembly. - 24 -...
  • Page 24: Trouble Shooting Methods

    8.TROUBLE SHOOTING METHODS A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE POSSIBLE CAUSE ERROR MESSAGE REMEDY FOR ERROR OCCURRENCE The Water Supply Tap is closed. Take action on Water Supply INLET ERROR device. The Water Supply is shut off. The Inlet Hose is kinked. The Water Pressure is very low.
  • Page 25 POSSIBLE CAUSE ERROR MESSAGE REMEDY FOR ERROR OCCURRENCE EXCESS ERROR The Inlet Valve is troubled. Replace the Inlet Valve. The Controller is troubled. Repair or replace the Controller. displayed Condition Excessive water is sup- plied than normal water level.(Automatically drain Pump operated.) THERMAL ERROR The Inlet Water Temperature is...
  • Page 26: Trouble Diagnoses And Repair By Symptom

    B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM No Power on when the power button pressed. • Re-connect the Powr connection. The Power connection is correctly connected. • Check the electricity is failed or not. The Fuse or Circuit Breaker • Replace the Fuse or Circuit Breaker of house. of house is O.K? The Power Switch or •...
  • Page 27 The Wash Pump/Motor does not run. • close the Door tightly. The Door is tightly closed? • Check the Door Switch in Latch Handle. • Re-connect the wiring connections related to the The Wiring connections is OK? Washing Motor. The Blade is not locked •...
  • Page 28 Washing Results are not Satisfactory After washing, are there still White deposits or streaks on Reduce the amount of Rinse-Aid the dishes? (for Streak) After washing, are there still food soils on the dishes? Check that : - the amount of detergent Correctly used or not - Filters clogged or not.
  • Page 29 Power Button not automatically off after operation. Check the button is blocked by foreign materials. Check the Power Switch.(Replace it, if necessary.) Check the Controller.(Replace it, if necessary.) - 30 -...
  • Page 30: Installation Instruction

    9. INSTALLATION INSTRUCTION Step 1: PREPARE CUPBOARD OPENING 1. This dishwasher is designed to fit a standard dishwasher opening as shown below. 2. Select a location as close to sink as possible for easy connections to water and drain lines. 3.
  • Page 31 Step 2: PREPARE THE ELECTRICAL WIRING WARNING! For personal safety, remove house fuse or open circuit breaker before installation. Do not use an extension cord or adapter plug with this dishwasher. Electrical and grounding connections must comply with the national electrical code/provincial and municipal code and/or other local codes.
  • Page 32 Step 3: PREPARE THE WATER SUPPLY CONNECTION 1. This dishwasher may be connected to either hot or cold water. If the water can not be maintained below 149℉ ℉ (65℃), the dishwasher must be connected to cold water. 2. When connecting the dishwasher water line, sealing tape or compound should be used to avoid leaks.
  • Page 33 Step 5: INSTALL THE DISHWASHER IN CUPBOARD 1. Remove the Lower Cover and orient dishwasher as shown below. 2. Before sliding the dishwasher into the cupboard opening, make all necessary height adjustments using the legs. 3. Slide the dishwasher into the cabinet opening carefully. Make sure that the drain hose inside the cabinet is not kinked.
  • Page 34: Drain Requirements

    Step 6: DRAIN LINE CONNECTION 1. If the end of the drain hose does not fit to the drain line, use an adapter (not supplied) that must be resistant to heat and detergent and may be obtained from a plumbing shop. 2.
  • Page 35 Step 7: WATER SUPPLY CONNECTION 1. When connecting, sealing tape or sealing compound should be used to avoid water leaks. 2. Before connecting, turn off the water supply. Inlet Valve 3. After fitting the Elbow into the Elbow Inlet Valve, slide the Flexible Stainless Tube or Copper Tube Water Supply Tube into the Elbow.
  • Page 36 Step 9: FINAL CHECKS 1. Turn electrical power back on at the circuit breaker. 2. Turn house water supply back on. 3. Operate the dishwasher through one cycle (Quick cycle is recommended) to check for water leaks and operating conditions. 4.
  • Page 37: Exploded View

    10. EXPLODED VIEW LDF 7810 Series LDF 7811 Series LDF 5811 Series ACCESSORIES - 38 -...
  • Page 38 EXPLODED VIEW - 39 -...
  • Page 39 EXPLODED VIEW - TUB ASSEMBLY F040 F060 F045 F050 F022 M090 F171 F011 F014 F013 F117 F144 F132 F110 F143 F117 M005 M006 F011 F210 F013 - 40 -...
  • Page 40 EXPLODED VIEW - PANEL ASSEMBLY A150 F192 A158 F004 A156 A159 A080 A070 A155 A060 A158 A073 A151 A170 A157 A074 A140 A149 A144 A147 A147 F191 A050 A142 A148 A143 A141 A110 - 41 -...
  • Page 41 EXPLODED VIEW - DOOR ASSEMBLY K201 K215 K207 K216 K253 K209 K260 K252 K203 K208 K251 K254 K252 K230 K208 K260 K262 K251 K212 K203 K216 K217 K209 K201 - 42 -...
  • Page 42 EXPLODED VIEW - BASE ASSEMBLY K121 K122 K001 K110 K006 K230 K006 K002 K005 K010 F174 K124 F142 K141 K010 A120 - 43 -...
  • Page 43 EXPLODED VIEW - SUMP ASSEMBLY M038 M037 - 44 -...
  • Page 44: Replacement Part List

    11. REPLACEMENT PART LIST CAUTION : BEFORE REPLACING ANY OFTHESE COMPONENTS. READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL NOTE : S(SAFETY PARTS), AL(ALTERNATIVE PARTS) LG MODEL: LD-6100WB/BB/TB Run_Date : 2005-01-30 YOUR MODEL: LDF7811WW/BB/ST SPECIFICATION: 120V 60Hz DESC PART No.
  • Page 45 PART NAME PART No. SPEC&COLOR Q'ty F001 FRAME ASSEMBLY 3211DD1001A F004 NOZZLE ASSEMBLY 5249DD2001A TOP NOZZLE F011 SPRING, HINGE 4970ED4004A F014 HINGE, BRACKET 4810ED4004A F022 SENSOR ASSEMBLY 6501DD2001A F040 GUIDE ASSEMBLY 4975DD1001A F045 COVER, PROTECT 3550DD2001A F050 NUT, DRAWING 4020FD3641C F060 GASKET 4986DD3001A...
  • Page 46 PART NAME PART No. SPEC&COLOR Q'ty 5020ED3012C K216 BUTTON, CONTROL OPTION BUTTON 5020ED3012D 3791DD3001E 3791DD3001A K230 WINDOW 3791DD3001B FRONT WINDOW 3791DD3001B K251 PWB(PCB) ASSEMBLY, MAIN 6871DD1006A K252 PWB(PCB) ASSEMBLY, DISPLAY 6871DD2001A K253 PWB(PCB) ASSEMBLY, DISPLAY 6871DD2002A K254 DISPLAY LED ASSEMBLY 6327DC3001A K260 LATCH, ASSEMBLY...
  • Page 47 CAUTION : BEFORE REPLACING ANY OFTHESE COMPONENTS. READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL NOTE : S(SAFETY PARTS), AL(ALTERNATIVE PARTS) LG MODEL: LD-6090WB/BB/TB Run_Date : 2005-01-30 YOUR MODEL: LDS5811WW/BB/ST SPECIFICATION: 120V 60Hz DESC PART No. COMMENTS * 001 MANUAL ASSEMBLY, OWNER’S...
  • Page 48 PART NAME PART No. SPEC&COLOR Q'ty F004 NOZZLE ASSEMBLY 5249DD2001A TOP NOZZLE F011 SPRING, HINGE 4970ED4004A F014 HINGE, BRACKET 4810ED4004A F022 SENSOR ASSEMBLY 6510DD2001A F040 GUIDE ASSEMBLY 4975DD1001A F045 COVER, PROTECT 3550DD2001A F050 NUT, DRAWING 4020FD3641C F060 GASKET 4986DD3001A F101 PACKING 3920DD3002A F110...
  • Page 49 PART NAME PART No. SPEC&COLOR Q'ty K230 WINDOW 3790DD3002A OPTION WINDOW K251 PWB(PCB) ASSEMBLY, MAIN 6871DD1006B K252 PWB(PCB) ASSEMBLY, DISPLAY 6871DD2003A K254 DISPLAY LED ASSEMBLY 6327DC3001A K260 LATCH, ASSEMBLY 4027ED3002A K301 SCREW, DRAWING 4000FD4268A DOOR LINER~DOOR HINGE K301 SCREW, DRAWING 1SZZED3002A DOOR LINER~CONTROL PANEL DOOR LINER~CONTROL PANEL...
  • Page 50 CAUTION : BEFORE REPLACING ANY OFTHESE COMPONENTS. READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL NOTE : S(SAFETY PARTS), AL(ALTERNATIVE PARTS) LG MODEL: LD-6105WB/BB/TB Run_Date : 2005-01-30 YOUR MODEL: LDF7810WW/BB/ST SPECIFICATION: 120V 60Hz DESC PART No. COMMENTS * 001 MANUAL ASSEMBLY, OWNER’S...
  • Page 51 PART NAME PART No. SPEC&COLOR Q'ty F014 HINGE, BRACKET 4810ED4004A F022 SENSOR ASSEMBLY 6501DD2001A F040 GUIDE ASSEMBLY 4975DD1001A F045 COVER, PROTECT 3550DD2001A F050 NUT, DRAWING 4020FD3641C F060 GASKET 4986DD3001A F101 PACKING 3920DD3002A F110 RAIL ASSEMBLY 5219DD2002A F117 STOPPER, ROLLER 4620ED3001A F132 PACKING 3920DD3003A...
  • Page 52 PART NAME PART No. SPEC&COLOR Q'ty DOOR LINER~CONTROL PANEL K302 SCREW, DRAWING 1SZZED3001A ~ FRONT COVER K303 SCREW, DRAWING 1SZZED3002A DOOR LINER~CONTROL PANEL DOOR LINER~CONTROL PANEL K304 SCREW, DRAWING 1SZZED3003A CABINET~BODY FRAME M001 HOLDER 4930DD3002A M005 GASKET 4986DD3002A SUMP GASKET M006 SUMP, ASSEMBLY 3485ED1002A...
  • Page 53 - 54 -...
  • Page 54 - 55 -...
  • Page 55 P/No. : 3828ED3001X...

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