LG LDS5540ST Service Manual
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LG LDS5540ST Service Manual

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See also: Owner's Manual , Installation Manual
For Authorized Service Technician
MODEL : LDS5540ST/WW/BB
LDS5040ST/WW/BB
LDS5560ST/WW/BB
LDS4921ST/WW/BB

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Summary of Contents for LG LDS5540ST

  • Page 1 For Authorized Service Technician MODEL : LDS5540ST/WW/BB LDS5040ST/WW/BB LDS5560ST/WW/BB LDS4921ST/WW/BB...
  • Page 2 For Authorized Service Technician - 2 -...

  • Page 3: Table Of Contents

    1. CAUTION ......................4 2. SPECIFICATION ....................5 3. WIRING DIAGRAM ..................6 4. FEATURES & TECHNICAL EXPLANATION ........... 7 5. PARTS NAME ....................15 6. PROGRAM CHART(SCHEMATIC DIAGRAM) ..........17 7. HOW TO DISASSEMBLE ................18 8. TROUBLE SHOOTING METHODS ............... 27 A.

  • Page 4: Caution

    For Authorized Service Technician 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 5: Specification

    For Authorized Service Technician 2. SPECIFICATION ITEM SPECIFICATION Rated Voltage / Frequency AC 120 V / 60 Hz Installation Built-In Place Settings Product Dimension(in) 2 3 3 / 4 ̋ x 2 4 5 / 8 ̋ x 3 3 1 / 2 ̋ 90.8lbs (for LDS5040, LDS4921 series) Product Weight(lbs) 90.8lbs (for LDS5540 series)

  • Page 6: Wiring Diagram

    For Authorized Service Technician 3. WIRING DIAGRAM - 6 -...

  • Page 7: Features & Technical Explanation

    For Authorized Service Technician 4. FEATURES & TECHNICAL EXPLANATION 4-1. Parts And Features FEATURES LARGE CAPACITY VARIO SPRAY SYSTEM LG dishwashers allow Because the water spray you to load very large alternates between the items in both the up- upper and lower racks, per and lower racks.

  • Page 8: Control Panel

    For Authorized Service Technician PARTS AND FEATURES 4-2 Control Panel (for LDS5540, LDS5560 Series) CONTROL PANEL Display varies by model(LDS5540) Display varies by model(LDS5560) Cycles DUAL WASH Select your desired cycle. intensities. The default setting for this cycle washes the lower rack with strong spray intensity and the upper rack with soft POWER SCRUB spray intensity.
  • Page 9 Smart Phone 2. Select the cycle (and desired options). using the LG Smart Laundry & DW Application or via you tele- 3. Press and hold the Extra Rinse and Delay Start buttons for phone to the LG call center.
  • Page 10 For Authorized Service Technician PARTS AND FEATURES Display varies by model(LDS5560) Cycle Options SPRAY (INTENSITY) First, select the desired cycle. Press the Spray button repeat- (Refer to the control panel on the next page) edly until the desired spray intensity is selected. Press the desired cycle and then select the options for that Soft ( ), Medium (...
  • Page 11 For Authorized Service Technician 4-2 Control Panel (for LDS5040, LDS4921 series) Cycles UPPER ONLY This cycle is only for washing items placed on the upper rack. Select your desired cycle. CHIME ON/OFF POWER SCRUB This cycle is for heavily and hard soiled dishes. Power Scrub Press and hold the Power Scrub and Upper Only buttons simu- can also help reduce hard water spotting on dishes.
  • Page 12 Should you experience any problems with your dishwasher, it has the capability of transmitting data to your Smart Phone To activate the Child Lock: using the LG Smart Laundry & DW Application or via you tele- 1. Press the Power button. phone to the LG call center.
  • Page 13 For Authorized Service Technician 4-3. Test Mode LDS5560 Series ※ U00 : Main PGM Ver. CHECK PROGRAM ※ d00 : Display PGM Ver. The number of State of Button Top Display Load pushing button Door Half Load n03U00/d00 + Delay Start 1 time All LED’s are lighting Either...
  • Page 14 For Authorized Service Technician 4-3. Test Mode LDS5540 Series CHECK PROGRAM The number of BUTTON Top Display Load Door pushing button Extra Rinse + n03U00/d00 Delay Start + 1 Time All LEDs are lighting Either (Version) Power 1 Time Fan Motor Closed 2 Time Dispenser...

  • Page 15: Parts Name

    For Authorized Service Technician 5. PARTS NAME 5-1 LDS5540, LDS5560 Series 1. CONTROL PANEL 9. TOP SPRAY ARM 2. DOOR HANDLE 10. UPPER SPRAY ARM 3. FRONT COVER 11. LOWER SPRAY ARM 4. LOWER COVER 12. DETERGENT AND RINSE AID DISPENSER 5.
  • Page 16 For Authorized Service Technician 5-2 LDS5040, LDS4921 Series 1. CONTROL PANEL 10. UPPER SPRAY ARM 2. DOOR HANDLE 11. LOWER SPRAY ARM 3. FRONT COVER 12. DETERGENT AND RINSE AID DISPENSER 4. LOWER COVER 13. DRYING VENT COVER 5. LEVELING FEET 14.

  • Page 17: Program Chart(Schematic Diagram)

    For Authorized Service Technician 6. PROGRAM CHART(SCHEMATIC DIAGRAM) Buzzer Drain Drain Stop Drain Stop Heating A Heating A Wash Stop Wash Stop Water Supply Drain Water Supply Drain Wash Drain Stop Rinse Wash Stop Wash Stop Water Supply Drain Water Supply Drain Wash Drain...

  • Page 18: How To Disassemble

    For Authorized Service Technician 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 19: Door Assembly

    For Authorized Service Technician 3. Door Assembly 1) Front Cover ① Open the door. ② Remove 6 screws(stainless). Control Panel Front Cover 2) Control Panel Assembly ① Remove 8 screws(Stainless). ② Remove the wire connections. Be sure the wiring should not be changed in reassembling.
  • Page 20 For Authorized Service Technician 3) Fan Assembly 3) Fan Assembly Gasket Inner Cover Open the door. ① Open the door. Detergent ② Remove 1 screw for air duct. Remove 4 screws and a earth screw for Dispenser Fan Assembly Door Bracket. ③...
  • Page 21 For Authorized Service Technician 4. Lower Frame 4. Lower Frame 1) Press the holder hook as shown in figure. 1) Press the holder hook as shown in figure. 2) Remove 4 screws. 2) Remove 4 screws. 3) Hold the lower frame by one hand. 3) Hold the lower frame by one hand.
  • Page 22 1) Remove 2 screws. 2) Pull the Base Cover out. Cabinet Base For Authorized Service Technician 7. Harness & Hose Assembly 8. Harness & Hose Assembly 1) Remove the wiring connections. 1) Remove the wiring connections. 2) Remove the Hose connections from Sump 2) Remove the Hose connections from Sump Assembly.
  • Page 23 For Authorized Service Technician 8. Tub Sub Assembly 1) Remove side 4 screws. Tub Sub Assembly 2) Remove rear 4 screws. 3) Lift tub sub assembly upward. Be careful not be injured or scratch floor by the sharp edge of tub. 9.
  • Page 24 For Authorized Service Technician 11. Inlet Valve 12. Inlet Valve Cabinet Base Inlet Valve 1) You can disassemble the lnlet Valve by removing the 2 screws. 12. Air Braker Assembly 13. Air Braker Assembly 1) Disconnect the 3 hoses assembly. 2) Turn the Air Braker Nut counterclockwise.
  • Page 25 For Authorized Service Technician 1) Heater & Drain Motor 1) Heater, Drain Motor & Bracket Pull the Heater out of the Sump after Drain Pump ① Pull the Heater out of the Sump Drain Motor releasing the nut. after releasing the nut. Remove 3 screws.
  • Page 26 For Authorized Service Technician When you reassemble the Sump Assembly, be careful not to kink, tear and take off the seals. 14. Holder Supporter, Tub Packing and 15. Holder Supporter, Tub Packing Hinge Supporter Assembly. and Hinge Supporter Assembly. Rotate the screwdriver, after slide it into the gap between Stopper Roller and Rail Roller.

  • Page 27: Trouble Shooting Methods

    For Authorized Service Technician 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.
  • Page 28 For Authorized Service Technician 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.) Check the temperature.

  • Page 29: B. Trouble Diagnoses And Repair By Symptom

    For Authorized Service Technician 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 •...
  • Page 30 For Authorized Service Technician 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.
  • Page 31 For Authorized Service Technician 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 32 For Authorized Service Technician 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.) - 27 - - 27 - - 32 -...

  • Page 33: Installation Instruction

    For Authorized Service Technician 9. 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 34 For Authorized Service Technician 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 35 For Authorized Service Technician 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.
  • Page 36 For Authorized Service Technician 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 37: Drain Requirements

    For Authorized Service Technician 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 38 For Authorized Service Technician 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...
  • Page 39 For Authorized Service Technician 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 40: Exploded View

    For Authorized Service Technician 10. EXPLODED VIEW 10. EXPLODED VIEW “The following parts are not illustrated" ACCESSORIES Description Loc No. *Owner’s Manual G001 Printed E005 materials *Energy Label G002 *Service Manual G004 - 35 - - 35 - - 40 -...
  • Page 41 For Authorized Service Technician EXPLODED VIEW E005 F101 E010 F001 A130 A040 A003 - 41 -...
  • Page 42 EXPLODED VIEW - BAS E ASSEMBLY For Authorized Service Technician EXPLODED VIEW - BASE ASSEMBLY M100 A160 M260 M210 M266 M105 - 39 - - 39 - - 58 - - 42 -...
  • Page 43 For Authorized Service Technician LDS5560 Series EXPLODED VIEW - TUB ASSEMBLY F110 F113 F117 F111 M086 F040 F112 F060 F117 F045 F111 F050 F210 F022 F118 F113 M090 F041 F042 F043 F171 F011 F013 F117 F144 F132 F110 F143 F117 M005 F166 M006...
  • Page 44 For Authorized Service Technician LDS5540 / LDS5040 / LDS4921 Series EXPLODED VIEW - TUB ASSEMBLY M086 F040 F060 F045 F050 F022 M090 F041 F042 F043 F171 F011 F013 F117 F144 F132 F110 F143 F117 M005 F166 M006 F165 F011 F210 F013 - 44 -...
  • Page 45 For Authorized Service Technician LDS5540 / LDS5560 series EXPLODED VIEW - RACK ASSEMBLY EXPLODED VIEW - RACK ASSEMBLY EXPLODEDB VIEW-RACK ASSEMBLY (for LDS5540 series) F192 A165 A159 F004 A156 A080 A151 F005 A157 A158 A145 A155 A070 A101 A060 A073 A102 A150 A103...
  • Page 46 For Authorized Service Technician LDS5560 series EXPLODED VIEW - CUTLERY RACK ASSEMBLY EXPLODED VIEW - CUTLERY RACK ASSEMBLY A170 A171 A172 A152 - 46 -...
  • Page 47 For Authorized Service Technician LDS5040 / LDS4921 series EXPLODED VIEW - RACK ASSEMBLY EXPLODED VIEW - RACK ASSEMBLY F192 A159 F004 A156 A151 F005 A157 A158 A155 A070 A101 A060 A102 A150 A073 A103 A074 A050 F191 A141 A147 A146 A142 A110 A140...
  • Page 48 For Authorized Service Technician LDS5540 / LDS5560 series EXPLODED VIEW - PANEL/DOOR ASSEMBLY K200 K212 K006 K262 K254 K260 K252 K251 K280 K030 K100 K110 K121 K122 K101 K001 K217 K124 K002 K141 K140 K145 F142 F174 F141 - 48 -...
  • Page 49 For Authorized Service Technician LDS5040 / LDS4921 series EXPLODED VIEW - PANEL/DOOR ASSEMBLY K200 K006 K262 K216 K201 K260 K252 K212 K203 K251 K030 K100 K110 K121 K122 K101 K001 K217 K124 K002 K141 K140 K145 F142 F174 F141 - 49 -...
  • Page 50 For Authorized Service Technician EXPLODED VIEW - SUMP ASSEMBLY A120 M005 M006 M001 M038 M110 M025 M130 M035 M027 M028 M120 M031 M220 M088 M034 M026 M050 M007 M036 M087 M081 M060 M067 - 50 -...
  • Page 52 P/No. : MFL37554811...

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