LG LD-14AT2 Service Manual Download Page 1

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DISHWASHER

SERVICE MANUAL

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

NOTE

MODEL : LD-4050W

LD-14AW2 / LD-14AT2

LD-14AW3 / LD-14AT3

Summary of Contents for LD-14AT2

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

Page 2: ...G DIAGRAM 13 6 PROGRAM CHART SCHEMATIC DIAGRAM 15 7 HOW TO DISASSEMBLE 17 8 TROUBLE SHOOTING METHODS 27 A TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE 27 B TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM 29 9 INSTALLATION INSTRUCTION 33 10 EXPLODED VIEW 38 11 REPLACEMENT PART LIST 44 CONTENTS ...

Page 3: ...ndividuals 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 ...

Page 4: ...4AT2 AC 240V 50Hz Free Standing built In 14 600 W 600 D 850 H 52 Stainless Steel Stainless Steel Electronic 2 210 2 100 6 Sliding Adjustable 100 Fold down 18 Economy 0 7 Economy 84 Economy Yes Yes Yes Yes 5 Nylon Coating 0 5 8 AC 240V 50Hz Free Standing built In 14 600 W 600 D 850 H 52 White Stainless Steel Electronic Fussy 2 210 2 100 6 Sliding Adjustable 100 Fold down 18 Economy 0 7 Economy 84 E...

Page 5: ...water temperature in an dishwasher reaches 77 C considerably higher than the average rinse temperature in conventional dishwashers 65 C This is how Rinse 77 C can eliminate some bacteria such as salmonella 3 1 2 High Temperature Rinsing 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...

Page 6: ... 7 3 2 Display Panel LD 4050W RINSE EXTRA HOT CHILD LOCK TIME DELAY SPRAY INTENSITY POWER HALF LOAD DIAL PROGRAM START PAUSE TIME SAVE ...

Page 7: ...all 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 Indication of remaining time Self diagnosis and error message display REMAINING TIME Used to lock or unlock the control buttons to prevent all the setting fr...

Page 8: ...ME 12 TIME 13 TIME n 0H 11 11 12 22 13 33 14 44 15 55 11 11 16 66 n 01 Frequency n 03 n 04 n 05 n 06 n 07 n 08 n 09 Temperature n 11 n 12 All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting The LED of each course is lighting None Water level sensor Washing motor Drain pump Inlet valve Dispenser Heater for 10 sec Fan mo...

Page 9: ...1 12 22 13 33 14 44 15 55 11 11 16 66 17 77 18 88 19 99 10 00 n 01 Frequency n 03 n 04 n 05 n 06 Temperature n 07 n 08 n 09 n 11 n 12 All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting None Water level sensor ...

Page 10: ...er Cover 6 Process Monitor 7 Power Switch 8 Drain hose 9 Inlet valve ASM 10 Power Cord 11 Adjust Leg 12 Upper Rack 13 Cutlery Rack 14 Detergent Rinse Aid Dispenser 15 Vapor Vent Cover 16 Upper Spray Arm 17 Lower Spray Arm 18 Filter ASM 19 Lower Rack 11 4 PARTS NAME LD 4050W ...

Page 11: ...6 Process Monitor 7 Power Switch 8 Inlet valve ASM 9 Drain Hose Connector 10 Power Cord 11 Adjust Leg 12 Upper Rack 13 Cutlery Rack 14 Detergent Rinse Aid Dispenser 15 Vapor Vent Cover 16 Upper Spray Arm 17 Lower Spray Arm 18 Filter ASM 19 Lower Rack 4 PARTS NAME 12 LD 14AT2 LD 14AW2 ...

Page 12: ... 13 5 WIRING DIAGRAM LD 4050W ...

Page 13: ...5 WIRING DIAGRAM 14 LD 14AW2 LD 14AT2 ...

Page 14: ... 15 6 PROGRAM CHART SCHEMATIC DIAGRAM ...

Page 15: ...6 PROGRAM CHART PGM TIME Flow Default Vario 16 ...

Page 16: ...ower Rack and the Upper Rack 5 If necessary remove the inlet hose and drain hose to avoid the hose damages 6 Prepare some towels to avoid floor wet by the water left in the dishwasher 1 Top Table 1 Remove the rear 2 screws 2 Pull and lift the top table 2 Low Cover 3 Cabinet R L 1 Cabinet R Remove front 4 screws Remove rear 3 screws 2 Cabinet L Remove front 4 screws Remove rear 3 screws 17 7 HOW TO...

Page 17: ...e 6 screws stainless Close the door slowly and remove front cover downwards 2 Control Panel Assembly Open the door 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 LD 4050W LD 14AW2 LD 14AT2 18 ...

Page 18: ...nnections Remove 6 screws with brackets Detergent Dispenser Door Liner Door Bracket Inner Cover Out Cover Fan Fan 5 Door Spring Right Left Push the Spring upwards and take it off from the Frame Be careful not to be injured by the sharp edge of Tub Take the Hinge Link off from the Hinge 6 Door Liner Open the door Remove 4 screws Do not use other screws for assembling LD 4050W LD 14AT2 LD 14AW2 ...

Page 19: ...le 2 Filter Assembly Turn inner filter counterclockwise and lift inner filter and middle filter You can disassemble inner filter and middle filter by pulling opposite direction Lift up main filter Lift up micro filter 3 Nozzle Holder Disconnect the water guide Remove 4screws and lift it up Main filter Inner filter Middle filter Micro filter ...

Page 20: ...Be careful not to be injured or scratch floor by the sharp edge of tub 8 Air Guide Assembly Disconnect the wiring connection Remove 3 hoses assembly Be careful the o ring should not be lost 9 C Base Assembly 1 Remove the screw which tighten washing motor and base 2 Lift them upward Be careful not to wet the floor by the water left in the sump 3 Detach the washing motor and heater assembly by pulli...

Page 21: ... 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 8 Inlet valve Remove 2 screws ...

Page 22: ... 23 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 ...

Page 23: ...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 5 Put the Dishwasher upside down 7 2 DISASSEMBLE C BASE ASSEMBLY 24 ...

Page 24: ... Disconnect of powercord assembly 3 Disconnect wire from the capacity 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 ...

Page 25: ... case washing pump drain motor etc you may refer to 7 1 9 2 11 Page 21 23 Don t disassemble sump by 7 2 If you want to disassemble the sump follow 7 1 4 Disconnect wire from the inlet valve 5 Disconnect wire from the relay Now you can remove the base from the tub perfectly ...

Page 26: ...ump Motor or repair the Circuit Replace the connections of Hose Check the point of damages and repair or replace the related parts Open the Water Tap Repair the Inlet Hose a Close the Water Tap b Unscrew the Inlet Hose Inlet Valve side c Clean the Filter of Inlet Valve Replace or repair the Inlet Valve Check the water remain on the base 1 Check the point of damages and repair or replace the relate...

Page 27: ...reaker Replace the sensor assembly Repair or replace the Controller Excessive water is sup plied than normal water level Automatically drain Pump operated EXCESS ERROR displayed Condition The resistance of ther mistor not normally out put THERMAL ERROR displayed Condition The Circuit of Heater is troubled The Thermistor is troubled The Heater is shorted The Relay Circuit is troubled Repair the Cir...

Page 28: ...er Switch or NO the Circuit is O K YES The C Trans Circuit NO is O K YES Insert the Plug Correctly Check the electricity is failed or not Replace the Fuse or Circuit Breaker of house Check the Thermal Fuse and replace it Check the Power Switch or the circuit and repair it Check the C Trans Circuit and repair it Check the Controller Power Circuit B TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM 29 ...

Page 29: ...ked YES The circuit of Pump NO Motor is O K YES The Thermal Protec YES tor of Motor is tripped NO Close the Door Tightly Check the Door Switch in Latch Handle Remove the cause of block or replace the Pump Motor Repair the circuit Cool the Motor Until the Thermal Protector reset Replace the Pump Motor ...

Page 30: ... or not Filters clogged or not the holes of spray arms blocked or not Utensils are correctly arranged or not Utensils are overloaded or not the spray arm rotating is obstructed or not the program is correctly selected or not ㆍ Reduce the amount of Rinse Aid for Streak YES Dry Results are not satisfactory Increase the amount of Rinse Aid Set the number higher Select the Program that the Rinse tempe...

Page 31: ... 32 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 ...

Page 32: ...m of space is required between the washer and an adjacent cabinet or a wall Ensure the floor under the dishwasher is at the same level as the rest of the room to allow for any service requirements Step1 Prepare Cupboard opening If bare chipboard is adjacent to or above the dishwasher it should be sealed with a waterproofing paint or sealant to prevent swelling due to steam Cut out for hoses and el...

Page 33: ...ary See Fig A 3 The power point must be correctly earthed if in doubt have it checked by a qualified Electrician No other appliance shall be connected to the same plug outlet by a double adapter or similar plug 1 Lay the dishwasher on its back 2 Adjust the legs to the needed height of cabinet as shown at below Step 2 PREPARE ELECTRICAL WIRING Step 3 PREPARE DISHWASHER FOR INSTALLATION CAUTION For ...

Page 34: ...ld 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 Step 4 INSTALL THE DISHWASHER IN CUPBOARD CAUTION If the height of cupboard is below 850mm you should remove the top table by unscrewing the 2 screws Two of rear ...

Page 35: ...options are commonly used outside this area and local council or plumbers should be able to advise of these The S trap spigot must be drilled out cleanly and free of obstruction to its maximum internal diameter if used for drainage To prevent syphoning one of the following instruction methods must be followed When the drainage hose is connected to a sink S trap or waste disposal unit the hose must...

Page 36: ...ot be maintained below 65 C the dishwasher must be connected to cold water 2 When connecting the sealing tape or sealing compound should be used to avoid water leaks Make sure that the line is not kinked or sharply bent Step 6 WATER SUPPLY CONNECTION 1 Securely hand tighten supply hose to water supply Plug power cord into an earthed power point and switch on 2 Operate the dishwasher through one cy...

Page 37: ...10 EXPLODED VIEW 38 LD 4050W LD 14AT2 LD 14AW2 ...

Page 38: ... 39 A140 A146 A147 A150 A142 A145 A080 A152 A070 A060 A090 EXPLODED VIEW LD 14AW2 A110 A010 A050 A020 A002 A001 ...

Page 39: ... 40 A140 A146 A147 A060 A070 A155 A150 A080 A090 A156 A142 A145 EXPLODED VIEW LD 4050W LD 14AT2 ...

Page 40: ... 41 EXPLODED VIEW TUB ASSEMBLY F040 F022 F171 F144 F143 F011 F013 F132 F110 F113 F112 F111 F181 F060 F050 F011 F013 F111 F113 F112 F110 F004 F182 F183 F191 E001 F008 ...

Page 41: ... 42 EXPLODED VIEW SUMP ASSEMBLY M072 M073 M070 M071 M074 M006 M024 M025 M031 M051 M029 M062 M002 M060 M061 M027 M080 M005 M001 A120 M083 M086 M026 M028 M018 M008 ...

Page 42: ...EXPLODED VIEW BASE DOOR ASSEMBLY K002 K121 K110 K001 K101 K003 K122 K123 K204 K209 K262 K260 K010 K201 K202 K203 K208 K205 K230 K252 K251 F142 F141 F174 43 LD 14AW2 LD 14AT2 ...

Page 43: ... 44 LD 14AW2 LD 14AT2 A030 A040 M210 F072 M230 A130 A131 M250 M023 M280 M270 M260 A276 EXPLODED VIEW BASE ASSEMBLY M215 ...

Page 44: ...K252 K205 K201 K262 K260 K251 K211 K209 K204 K230 K208 K002 K121 K001 K101 K003 K122 K123 K010 F142 F141 F174 K124 K110 EXPLODED VIEW PANEL DOOR ASSEMBLY 45 LD 4050W ...

Page 45: ...EXPLODED VIEW BASE ASSEMBLY 46 A030 A040 M210 F072 M230 A130 A131 M250 M023 M280 M270 M260 A276 A160 LD 4050W ...

Page 46: ...10 EXPLODED VIEW 47 LD 14AT3 LD 14AW3 ...

Page 47: ... 48 A140 A110 A080 A155 A146 A002 A001 A020 F008 A147 A142 A145 A010 A156 A090 A070 A060 A150 EXPLODED VIEW LD 14AT3 A050 ...

Page 48: ...A140 A110 A146 A002 A001 A050 A020 F008 A147 A142 A145 A010 A070 A152 A060 A080 A090 A150 49 EXPLODED VIEW LD 14AW3 ...

Page 49: ... 50 F040 F022 F171 F117 F144 F143 F011 F013 F132 F117 F210 F113 F118 F181 F060 F050 F011 F013 F110 F113 F112 F004 F111 F182 F183 F111 F191 E001 F008 EXPLODED VIEW TUB ASSEMBLY ...

Page 50: ...EXPLODED VIEW BASE DOOR ASSEMBLY K002 K121 K110 K001 K101 K003 K122 K123 K204 K209 K262 K260 K010 K201 K202 K203 K208 K205 K230 K252 K251 F142 F141 F174 51 ...

Page 51: ... 52 A030 A040 M210 F072 M230 A130 A131 M250 M023 M280 M270 M260 A276 EXPLODED VIEW BASE ASSEMBLY ...

Page 52: ... 53 EXPLODED VIEW SUMP ASSEMBLY M072 M073 M070 M071 M074 M006 M024 M025 M031 M051 M029 M062 M002 M060 M061 M027 M080 M005 M001 A120 M083 M086 M026 M028 M018 M008 ...

Page 53: ...P No 3828ED3001L ...

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