LG WD14750SD Service Manual Download

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WASHING MACHINE

SERVICE MANUAL

READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES
CORRECTLY BEFORE OFFERING SERVICE.

MODEL : WD14750SD / WD14756SD

CAUTION

Summary of Contents for WD14750SD

Page 1: ...WASHING MACHINE SERVICE MANUAL READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES CORRECTLY BEFORE OFFERING SERVICE MODEL WD14750SD WD14756SD CAUTION ...

Page 2: ...MAR 2007 PRINTED IN KOREA P No MFL30138919 ...

Page 3: ...CY 13 7 4 HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION 13 7 5 ERROR DISPLAY 14 8 ERROR DIAGNOSIS AND CHECK LIST 16 8 1 DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION 16 8 2 FAULT DIAGNOSIS AND TROUBLE SHOOTING 19 9 DISASSEMBLY INSTRUCTIONS 25 10 EXPLODED VIEW AND PARTS LIST 33 10 1 THE EXPLODED VIEW OF CABINET ASSEMBLY 33 10 2 THE EXPLODED VIEW OF CONTROL PANEL AND DISPENSER A...

Page 4: ...WASH PROGRAM Cotton Synthetic Delicate Hand Wash Wool Duvet Quick30 Rinse Spin Refresh Baby Care RINSE Normal Rinse Rinse Rinse Hold DOOR SWITCH TYPE Bi Metal type WATER LEVEL 10 steps by sensor RESERVATION From 3 hours to 19 hours SENSING OF THE LAUNDRY AMOUNT Adapted FUZZY LOGIC Adapted DISPLAY OF THE REMAINING TIME Adapted ERROR DIAGNOSIS 10 items POWER AUTO OFF Adapted CHILD LOCK Adapted AUTO ...

Page 5: ...m pressing any button to change the settings during operation More economical by Intelligent Wash System Intelligent Wash System detects the amount of load and water temperature and then determines the optimum water level and washing time to minimize energy and water consumption Low noise speed control system By sensing the amount of load and balance it evenly distributes load to minimize the spin...

Page 6: ...r level in the tub Water supply is stopped when the water level to the preset level then washing program proceeds Spinning does not proceed until the water in the tub reduces to a certain level 2 4 THE DOOR CAN NOT BE OPENED While program is operating While Door Lock light turns on 5 FUZZY LOGIC laundry amount selected washing temperature water temperature washing time rinsing time spin rhythm tim...

Page 7: ...Inlet hose 1EA Option Hot Cold 2EA Spanner 3 PARTS IDENTIFICATION 6 ACCESSORIES Drawer Cold Water Inlet Cold Only Hot Cold Cold Water Inlet Hot Water Inlet ...

Page 8: ...whether it works O Kor NOT STANDARD INSTALLATION The appliance should be installed as follows REMOVE THE TRANSIT INSTALL THE APPLIANCE ADJUST THE BOLTS ON FLAT AND FIRM SURFACE HORIZONTAL Remove the transit bolts Turn the leveling feet to 4EA with supplied spanner set the appliance horizontally Keep the transit bolts and spanner for future use Insert the provided 4 caps into the hole The appliance...

Page 9: ...e firmly to prevent leak CONNECT DRAIN HOSE CONNECT POWER PLUG 8 Make sure that the hose is not twisted The drain hose should be placed under 100cm from the floor Connect the power plug to the wall outlet Avoid connecting several electric devices It may be the cause of a fire Avoid submerging the end of the hose ...

Page 10: ...Power off and then power on Check if the door can be opened after 3 minutes Turn off Wash and Rinse after pressing the Start Pause button and start the machine again Check drain and spin Press the Rinse Medic Rinse button simultaneously and the present temperature will be displayed If SVC is needed during check remove the remaining water by pulling out the hose cap Check the water heating Check au...

Page 11: ... to Start Stop the washer By pressing the Steam Wash button Steam Function is selected light on Steam Wash button LED Allows the start of any cycle to be delayed for 3 19 hours Select a water temperature based on the type of load you are washing By pressing the Rinse button the Rinse type can be selected Cycle Selector Time Delay Power Start Pause Steam Wash Rinse Temp Button ...

Page 12: ...nd drain Crease Care If you want to prevent crease select this button with spin speed Medic Rinse For high effectiveness or more purity in rinse operation you can choose Medic Rinse option It can be chosen in all course with the exception of Hand Wash Wool Delicate Quick 30 Duvet Refresh Display the estimated remaining time Hour Minute to finish In case of abnormal operation error indications are ...

Page 13: ...0 180 60 180 120 180 60 180 120 180 60 180 120 180 60 480 180 20 20 8 12 42 8 12 42 8 12 8 8 12 42 20 Approx Working Time Minute 26 23 19 155 68 72 62 72 30 E N D A U T O O F F 114 111 84 Rinse Spin Drain Spin D T Extra Stain 4 6 W S Rinse 3 W S Rinse 2 W S Rinse Wash 1 W S Rinse Wash Pre Main W S Wash W S Baby Care Wash Spin Duvet Quick 30 Rinse Spin Refresh Cotton Synthetic Delicate Hand Wash Wo...

Page 14: ... turns on Water level frequency 25 65 6 times Inlet valve for hot water turns on Water level frequency 25 65 7 times Inlet valve for steam turns on Water level frequency 25 65 8 times Inlet valve for bleach turns on Water level frequency 25 65 9 times Tumble counterclockwise rpm 42 50 10 times Heater turns on for 3 sec Water temperature 11 times Circulation pump turns on Water level frequency 25 6...

Page 15: ... water level 246 within 8 minutes after water supplied or not reached to the preset water level within 25 minutes Not fully drained within 10 minutes Water is over flowing over 8 level If is displayed drain pump operates to drain water automatically The sensor pressure switch is out of order In case of operating the reservation function or the other function with door opened Close the door then th...

Page 16: ...RE ASSEMBLY is not connected to the connnector of STATOR ASSEMBLY Reconnect or repair the connector The hall sensor is out of order defective Replace the STATOR ASSEMBLY Water leaks The washer ecperienced a power failure 15 LOCKED MOTOR ERROR POWER FAILURE ...

Page 17: ...ER INLET TROUBLE YES YES YES NO NO YES NO NO Is the power plug connected firmly to 220 240V outlet Power failure or Breaker opened Visit to check Is displayed Is the tap opened Is the tap frozen Is the water supply shut off Is filter in the inlet valve clogged with foreign material Visit to check Clean the filter of inlet valve ...

Page 18: ...CALL NO YES NO YES Started with door opened NO YES Is the debris filter clogged with foreign material such as pin coin and etc Is the drain hose frozen with water kinked or crushed Visit to check Restart the cycle Close the door Visit to check Check if the door switch is O K Is displayed Clean up the filter ...

Page 19: ...e the using amount of detergent Is softener put in the correct compartment of the drawer Is the drawer closed during wash Is the softener cap clogged Explain how to use softener Clean the compartment for softener Visit to check LOW SUDSING This appliance has the automatic suds sensing function which operates under much suds condition for good rinse and preventing overflow When much suds are sensed...

Page 20: ... the MAIN PWB ASSEMBLY Put in the connectors correctly NO NO YES YES YES NO NO YES PWB ASSEMBLY MAIN PWB ASSEMBLY MAIN Check the fuse Replace MAIN PWB ASSEMBLY Reconnect the PWB ASSEMBLY Reconnect the PWB ASSEMBLY When measuring the voltage of the outlet is the voltage AC 220 240V Is the led 1 on Is connector 2 disconnected or disassembled Is wire of the PWB ASSEMBLY disconnected Replace PWB ASSEM...

Page 21: ...e connector 220 240V Refer to 7 2 QC TEST MODE Is water supplied Are replaceptacles correctly connected to the terminals of the INLET VALVE ASSEMBLY Is detergent put in the correct compartment of the drawer Is the detergent hardened Open the tap Check the AIR CHAMBER and the tube clogged with impurity Clean the filter Replace the INLET VALVE ASSEMBLY Replace the MAIN PWB ASSEMBLY Refer to NO WATER...

Page 22: ... NO WATER SUPPLY_ Check the wiring on the dispenser Put it in the correct compartment Clean the cap and drawer Is the motor bolt loosened Is there friction noise from the motor Is water supplied Are receptacles correctly connected to the terminals of the INLET VALVE ASSEMBLY Is softener put in the correct compartment of the drawer Is the softener cap clogged ...

Page 23: ...2 or more When pressing Rinse and Temp buttons at the same time while wash is the water level frequency between 230 243 Checking voltage between two pins as press the POWER button is the voltage 220 240V Is the drain hose twisted or frozen Is the impeller of the drain pump clogged Is the connector disconnected disassembled Is the coil of the drain pump cut off resistance of coil is 80 150Ω When ch...

Page 24: ...LUE Rinse and Medic Rinse temperature button simultaneously Push the THERMISTOR tightly to the rubber When checking THERMISTOR on the tub is the THERMISTOR loosened above 2mm from the rubber HEATING CONTINUOUSLY ABOVE THE SETTING WATER TEMPERATURE ...

Page 25: ...pressing Rinse Medic Rinse and POWER buttons at the same time after power off press the Start Pause button 1 times is the drum low speed spin Is it disconnected or disassembled Red 3pin 1 GY 4pin 2 Check the motor connector is the resistance of the terminal same as the figure MOTOR TERMINAL 1 Resistance of terminal About 5Ω Ω 15Ω Ω Replace the MAIN PWB ASSEMBLY Does the spring of Latch Hook actuat...

Page 26: ... Pull out the drawer and unscrew 2 screws Lift the side the Control Panel Assembly and pull it out Two screws is unscrewed Push out PANEL ASSEMBLY CONTROL after Push the hook below The PWB assembly Display is disconnected When 7 screws are unscrewed on the PWB insulator and the PWB assembly Display is disassembled from the PWB insulator CONTROL PANEL PLATE ASSEMBLY TOP PWB ASSEMBLY DISPLAY DRAWER ...

Page 27: ...of PWB assembly Main is removed Disconnect connector from the wiring The plate assembly Top are disassembled Pull the drawer to arrow direction Two screws are unscrewed The hose clamps and the hose are disassembled The ventilation bellows are disassembled on the tub PWB ASSEMBLY MAIN DISPENSER ASSEMBLY Dispenser assembly Option DRAWER ...

Page 28: ... PRE WASH WHITE BLACK BLACK VALVE NORMAL WASH GRAY BLACK VALVE HOT BLACK WHITE Open the door completely Remove the two screws from the hinge When removing the Door Assembly it is necessary to hold the Bracket that is inner of the Cabinet Cover Pull it out from hose First prepare a bucket to put in the remained water CAP REMAINING HOSE DOOR Removing method of remained water ...

Page 29: ...screw from the pump case Put a flat screwdriver or putty knife into the both sides of the pump case and pull it out Unscrew the screw from the lower side of the cabinet cover Unscrew the 2 screws from the lower of the DECO PANEL Two screws is unscrewed Push out PANEL ASSEMBLY CONTROL after Push the hook below ...

Page 30: ... are unscrewed Lift and separate the cabinet cover The cabinet cover clamp is removed and the gasket is released Two screws are unscrewed The Door Lock S W is disconnected form the wiring connector and the strap SWITCH ASSY DOOR LOCK NOTE When assembling the CABINET COVER connect the Door S W connector ...

Page 31: ...base is pulled off pressing on the snaps at the sharp end The hinge at the base is pulled off To arrow direction ROTOR ASSEMBLY STATOR ASSEMBLY FRICTION DAMPER Rotor Bolt Friction Damper Hinge Damper ROTOR ASSEMBLY STATOR ASSEMBLY FRICTION DAMPER HOW TO ASSEMBLE THE MOTOR TSG TURBO STEAM GENERATOR Remove the housing coupled the TSG Connector Hoses Earth Screw Taking ou the screw of the TSG WD FDS ...

Page 32: ...oosen the nut Remove washing heater by pulling out When assembling the washing heater insert the heater to heater clip on the bottom of tub and check the position of wire color Pull it out by holding the thermistor bracket If holding the wire and pulling out it it may be broken CAUTION 31 Washing Heater Wire Color Red Wire Color Yellow Nut Ring Terminal PUMP HEATER THERMISTOR ...

Page 33: ...in etc by inserting long bar in the hole WHEN FOREIGN OBJECT STUCK BETWEEN DRUM AND TUB 32 SWITCH ASSEMBLY SAFETY Unscrew 4 screws from the back cover Disconnect the wiring connector First Press hook and turn the safety switch assembly switch assembly safety ...

Page 34: ... LIST OF CABINET ASSEMBLY 10 EXPLODED VIEW AND PART LIST 33 A140 A154 A153 A152 A151 A150 A141 A131 A130 A440 A134 A133 A303 A310 A275 A276 A220 A201 A200 A450 A455 A240 A410 A430 A100 A101 A110 A103 A102 A104 A300 ...

Page 35: ...10 2 THE EXPLODED VIEW OF CONTROL PANEL DISPENSER ASSEMBLY 34 F210 F160 M400 F170 F110 A460 F220 F215 F216 F225 F120 F300 F321 F324 F462 F430 F441 F432 ...

Page 36: ...ASSEMBLY 35 F140 K411 K410 F320 F310 F466 F464 K141 K110 K351 K350 K360 K143 K123 K121 K125 K320 K310 K311 K105 K410 K610 K611 K115 K122 K140 K510 K560 K340 K342 K346 K344 F145 K520 K540 F467 K550 K135 K130 K530 K512 K131 F468 F461 K111 ...

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