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LG LD-4050W 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 : LD-4050W
LD-14AW2 / LD-14AT2
LD-14AW3 / LD-14AT3

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Summary of Contents for LG LD-4050W

  • Page 1 DISHWASHER SERVICE MANUAL NOTE BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY FOR SAFETY AND CORRECT SERVICES. MODEL : LD-4050W LD-14AW2 / LD-14AT2 LD-14AW3 / LD-14AT3...

  • Page 2: Table Of Contents

    CONTENTS 1. CAUTION ........................... . 4 2.

  • Page 3: Caution

    CAUTION ! � 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.

  • Page 4: Specifications

    2. SPECIFICATION SPECIFICATION ITEM Model LD-4050W LD-14AT2 LD-14AW2 Rated Voltage / Frequency AC 240V/50Hz AC 240V/50Hz AC 240V/50Hz Installation Free Standing / built-In Free Standing / built-In Free Standing / built-In Place Settings Product Dimension(mm) 600(W)× 600(D)× 850(H) 600(W)× 600(D)× 850(H) 600(W)×...

  • Page 5: Features & Technical Explanation

    3. FEATURES & TECHNICAL EXPLANATION 3-1 New Technology Introduction 3-1-1. Turbo Fan Drying System • Turbo fan drying system expels out hot and humid air to enhance quick and effective drying. 3-1-2. High Temperature Rinsing • During the high temp. Rinse course, water temperature in an dishwasher reaches 77°C, considerably higher than the average rinse temperature in conventional...
  • Page 6 LD-4050W 3-2. Display Panel RINSE / DIAL (PROGRAM & HALF LOAD TIME SAVE EXTRA HOT START / PAUSE) CHILD LOCK TIME DELAY SPRAY INTENSITY POWER - 7 -...

  • Page 7: Half Load

    LD-14AW2 / LD-14AT2 3-2. Display Panel DELAY START POWER SWITCH TIME SAVE HALF LOAD BUTTON BUTTON • If you want to delay the • This function is • In case of small load, use • For operating, press this start of selected program, for saving time upper or lower rack only button first for power on.
  • Page 8 LD-4050W 3.3 TEST MODE CHECK PROGRAM(START IN THE STATE OF THE CLOSED DOOR) The number of BUTTON DISPLAY Load and Checking points pushing button Half Load+Time 1 TIME n : 0H All LEDs are lighting Delay+POWER S/W Rinse 1 TIME...
  • Page 9 LD-14AT2/LD-14AW2 3.3 TEST MODE CHECK PROGRAM(START IN THE STATE OF THE CLOSED DOOR) The number of BUTTON DISPLAY Load and Checking points pushing button Normal+Eco 1 TIME n : 0H All LEDs are lighting +POWER S/W Delay Start Key 1 TIME 11 : 11 All LEDs are lighting T-Save Key...

  • Page 10: Parts Name

    4. PARTS NAME LD-4050W 1. Control Panel 11. Adjust Leg 2. Vapor vent 12. Upper Rack 3. Door Handle 13. Cutlery Rack 4. Front Cover 14. Detergent & Rinse Aid Dispenser 5. Lower Cover 15. Vapor Vent Cover 6. Process Monitor 16.
  • Page 11 4. PARTS NAME LD-14AT2/LD-14AW2 1. Vapor vent 11. Adjust Leg 2. Control Panel 12. Upper Rack 3. Door Handle 13. Cutlery Rack 4. Front Cover 14. Detergent & Rinse Aid Dispenser 5. Lower Cover 15. Vapor Vent Cover 6. Process Monitor 16.

  • Page 12: Diagram

    5. WIRING DIAGRAM LD-4050W - 13 -...

  • Page 13: Wiring Diagram

    5. WIRING DIAGRAM LD-14AW2 LD-14AT2 - 14 -...

  • Page 14: Program Chart(Schematic Diagram)

    6. PROGRAM CHART(SCHEMATIC DIAGRAM) - 15 -...
  • Page 15 6. PROGRAM CHART(PGM TIME Flow-Default, Vario) - 16 -...

  • Page 16: Full Disassemble

    7. HOW TO DISASSEMBLE 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) If necessary, remove the inlet hose and drain hose to avoid the hose damages.

  • Page 17: Door Assembly

    Remove 6 screws(stainless). Close the door slowly and remove front cover downwards. 2) Control Panel Assembly Open the door. LD-4050W Remove 4 screws(stainless). Remove wire connection. Be sure the wiring should not be changed in reassembling. Remove 3 screws for Latch assembly Remove 5 screws for Controller.
  • Page 18 Cover screw. Detergent Inner Remove 2 fixing screws inside and turn Dispenser Cover the Inner Cover counterclockwise. LD-4050W, LD-14AT2 4) Detergent Dispenser Close the door. Remove the wire connections. Door Liner Remove 6 screws with brackets. LD-14AW2 Door Bracket 5) Door Spring (Right & Left) Push the Spring upwards and take it off from the Frame.

  • Page 19: Tub Assembly

    6. Base spacer Remove 4 screws. Lift the front side of dishwasher and pull the base spacer forward. 7. Tub assembly 1) Nozzle Pull up the nozzle. 2) Filter Assembly Inner filter Turn inner filter counterclockwise and lift inner filter and middle filter. Middle filter You can disassemble inner filter and Micro filter...
  • Page 20 4) Tub Turn the air guide nut counter-clockwise. (Special tool might be needed.) Be careful the rubber packing of air guide assembly should not be lost. Remove 4 screws for sump holder . Remove side 8 screws. Remove 2 Earth screw of right side. Lift tub assembly upward.
  • Page 21 5) synchronous motor Remove the 2 screws. Lift the cam upward. Be careful not to install upside down. (part number on the cam should face the motor.) 6) Vario valve Remove 4 screws and lift the cover upward. Lift the vario valve upward. 7) Capacitor Remove 1 screw.
  • Page 22 9) Noise filter Remove 1 screw. 10) Power cord assembly Turn the power cord assembly 90º and take it off. 11) Drain Hose Pull the holder forward and upward. 12) Relay Remove 2 screws. LD-4050W has no relay. - 23 -...

  • Page 23: Disassemble C-Base Assembly

    7-2. DISASSEMBLE C-BASE ASSEMBLY 1. Top Plate See 7-1. 1. (Page 17) 2. Low Cover See 7-1. 2. (Page 17) 3. Cabinet-R/L See 7-1. 3. (Page 17) 4. Air Guide Disconnect 3 hoses assembly. You need not to unscrew the air guide nut.
  • Page 24 6. Remove the side screws 1) Remove side 8 screws. 2) Remove 2 Earth screws of right side. 3) Remove 1 motor bracket screw. 4) Lift base upward slightly. (You can’t lift up base perfectly because of some parts connecting to base.) 7.
  • Page 25 4) Disconnect wire from the inlet valve. 5) Disconnect wire from the relay. Now, you can remove the base from the tub perfectly. 8. C-Base Assembly You can repair the parts in the C-Base like heater case, washing pump, drain motor etc.

  • Page 26: 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 Tap is not opened. Open the Water Tap. INLET ERROR The Inlet Hose is kinked. Repair the Inlet Hose. The Filter of inlet valve clogged a) Close the Water Tap.
  • Page 27 POSSIBLE CAUSE ERROR MESSAGE REMEDY FOR ERROR OCCURRENCE EXCESS ERROR The Inlet Valve is troubled. Replace the Inlet Valve. displayed The Air Break is troubled. Replace the air breaker. Condition The Sensor Assembly is troubled. Replace the sensor assembly. Excessive water is sup- The Controller is troubled.

  • Page 28: Trouble Diagnoses And Repair By Symptom

    B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM No Power on when the power button pressed. • Insert the Plug Correctly. The plug is correctly inserted in the • Check the electricity is failed or not. Socket-Outlet? The Fuse or • Replace the Fuse or Circuit Breaker of house. Circuit Breaker of house is O.K? The Thermal Fuse...
  • Page 29 The Wash Pump/Motor does not run. • Close the Door Tightly. The Door is tightly • Check the Door Switch in Latch Handle. closed? The Pump/Motor is • Remove the cause of block or replace the Pump/Motor. not blocked? The circuit of Pump/ •...
  • Page 30 Washing Results are not Satisfactory After washing, are there still White deposits or streaks on ㆍ 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 31 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.) - 32 -...

  • Page 32: Installation Instruction

    9. INSTALLATION INSTRUCTION Step1: Prepare Cupboard opening 1. This dishwasher is designed to fit to the size shown as below. 2. Select a location as close to sink as possible for easy connections to water and drain lines. 3. The dishwasher should not be installed more than 3 meters from sink for proper drainage. 4.
  • Page 33 Step 2 : PREPARE ELECTRICAL WIRING CAUTION For personal safety, remove house fuse or open circuit breaker before installation. Do not use an extension cord or adapter plug with this appliance. Electrical and grounding connections must comply with the national electrical code/provincial and municipal code and/or other local codes.
  • Page 34 Step 4 : INSTALL THE DISHWASHER IN CUPBOARD 1. Before sliding the dishwasher into the cupboard opening, all necessary final height adjustment and balancing adjustment should be done using the spanner. 2. Slide the dishwasher into the cabinet opening carefully. Make sure that the drain hose inside the cabinet should not be kinked or exceeded.
  • Page 35 Step 5 : DRAIN LINE CONNECTION 1. If the end drain hose does not fit to the drain line, use a piece of rubber connector (not supplied) that must be resistant to heat and detergent and may be obtained from a plumbing shop. 2.
  • Page 36 Drain Hose Extension ■ Drain Hose extension kits are available from through your local service centre. Extend drain Hose as shown below. Step 6 : WATER SUPPLY CONNECTION 1. Connect the water supply hose to the valve behind dishwasher and the water tap as shown in figure. This dishwasher may be fed with either hot or cold water.

  • Page 37: Exploded View 3

    10. EXPLODED VIEW LD-4050W LD-14AT2 LD-14AW2 - 38 -...
  • Page 38 LD-14AW2 EXPLODED VIEW A001 A002 A020 A050 A010 A090 A080 A110 A146 A147 A152 A140 A150 A145 A142 A070 A060 - 39 -...
  • Page 39 LD-4050W / LD-14AT2 EXPLODED VIEW A090 A080 A156 A146 A147 A140 A150 A155 A145 A142 A070 A060 - 40 -...
  • Page 40 EXPLODED VIEW - TUB ASSEMBLY F040 F060 F050 F011 F013 F022 F171 F110 E001 F113 F112 F111 F008 F143 F004 F144 F011 F191 F132 F182 F183 F181 F013 F110 F113 F112 F111 - 41 -...
  • Page 41 EXPLODED VIEW - SUMP ASSEMBLY M001 M072 M073 M070 M071 M074 A120 M005 M006 M024 M026 M028 M025 M031 M080 M083 M086 M027 M051 M029 M018 M008 M061 M060 M002 M062 - 42 -...
  • Page 42 LD-14AW2 / LD-14AT2 EXPLODED VIEW - BASE / DOOR ASSEMBLY K251 K252 K230 K205 K260 K208 K262 K209 K203 K202 K201 K204 K010 K002 K122 K123 K001 F142 K101 F141 K003 F174 K121 K110 - 43 -...
  • Page 43 LD-14AW2 / LD-14AT2 EXPLODED VIEW - BASE ASSEMBLY A276 A131 A130 F072 M230 M210 M215 M250 M023 A030 M280 M270 A040 M260 - 44 -...
  • Page 44 LD-4050W K251 K252 K205 K260 K208 K262 K201 K211 K209 K230 K204 K010 K122 K123 K001 F142 K002 K101 F141 K124 K003 K121 F174 K110...
  • Page 45 LD-4050W EXPLODED VIEW - BASE ASSEMBLY A276 A131 A130 F072 M230 M210 A160 M250 M023 A030 M280 M270 A040 M260 - 46 -...

  • Page 46: Exploded View

    10. EXPLODED VIEW LD-14AT3 LD-14AW3 - 47 -...
  • Page 47 LD-14AT3 EXPLODED VIEW A001 A020 F008 A002 A050 A010 A090 A146 A147 A080 A156 A145 A142 A155 A140 A150 A070 A060 A110 - 48 -...
  • Page 48 LD-14AW3 EXPLODED VIEW A001 A020 F008 A002 A050 A010 A090 A080 A146 A147 A145 A142 A152 A140 A150 A070 A060 A110 - 49 -...
  • Page 49 EXPLODED VIEW - TUB ASSEMBLY F040 F060 F050 F011 F013 F022 F110 F171 F113 E001 F117 F008 F111 F112 F143 F004 F144 F011 F191 F132 F183 F182 F181 F210 F013 F113 F117 F111 F118 - 50 -...
  • Page 50 EXPLODED VIEW - BASE / DOOR ASSEMBLY K251 K252 K230 K205 K260 K208 K262 K209 K203 K202 K201 K204 K010 K002 K122 K123 K001 F142 K101 F141 K003 F174 K121 K110 - 51 -...
  • Page 51 EXPLODED VIEW - BASE ASSEMBLY A276 A130 A131 F072 M230 M210 M250 M023 A030 M280 M270 A040 M260 - 52 -...
  • Page 52 EXPLODED VIEW - SUMP ASSEMBLY M001 M072 M073 M070 M071 M074 A120 M005 M006 M024 M026 M028 M025 M031 M080 M083 M086 M027 M051 M029 M008 M018 M061 M060 M002 M062 - 53 -...
  • Page 53 P/No. : 3828ED3001L...

This manual is also suitable for:

Ld-14aw2Ld-14at2Ld-14aw3Ld-14at3

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