LG WT-R107 Service Manual Download Page 1

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WASHING MACHINE
SERVICE MANUAL

Before servicing the washer, Read the safety precautions in the manual.

CAUTION

MODEL : WT-R107

Summary of Contents for WT-R107

Page 1: ...1 WASHING MACHINE SERVICE MANUAL Before servicing the washer Read the safety precautions in the manual CAUTION MODEL WT R107 ...

Page 2: ...nection with its use CONTENTS 1 Specifications 3 2 Installation Instructions 4 3 Operating Instructions 3 1 Identification of Parts 10 3 2 Before Starting to Wash 11 3 3 Function of Each Button 16 3 4 Washing Programs 18 3 5 Other Functions 22 3 6 Care and Maintenance 27 4 Service Information 4 1 Schematic Diagram Inverter Part 28 4 2 Schematic Diagram Display Part 29 4 3 Wiring Diagram 30 4 4 Pro...

Page 3: ...Hz Spin Speed 950 30 Dim Refer to rating label on the back of Washer Weight Refer to rating lavel on the back of Washer Program Fuzzy Eco Cotton Perm press Delicates Woo Silk Hand Wash Speed Wash Rinse Spin Bulky Large Heavy Duty Water Level 7 Stages Sping Speed Level Extra High High Medium Low No Spin Reservation Available for 1 24Hr Lid Interlock Switch Magnet Sensor Child Lock Applied Softener ...

Page 4: ...n area Install the washer on flat and firm surface If the washer is installed on an unsuitable floor it could make considerable noise and vibration 1 2 Improper installation of the washer may cause noise and malfunctioning 1 The ventilating openings in the base area must not be obstructed be carpeting when the washing machine is installed on a carpeted floor 2 Install the washing machine on a leve...

Page 5: ...Checking slope If installation surface is tilted the washer will be shaken 4 Lower Raise Horizontal setting Lift up the front of the washer and adjust level by turnings the adjustable legs clockwise or using the adjusting plate Do not install the washer in the following places Where the washer is exposed to direct sunlight Near a heater or heating appliance Where the washer is exposed to freezing ...

Page 6: ...he tap Push the upper connector up till the rubber packing is in tight contact with the tap Then tighten the 4 screws Rubber packing Attach the water supply hose securely to the connector Push the water supply hose vertically upwards so that the rubber seal within the hose can adhere completely to the tap Connector Water supply hose Fixing the connector to the water supply hose Attach the water su...

Page 7: ... upper connector up till the rubber packing is in tight contact with the tap Then tighten the 4 screws Connector Fixing Upper Connector and Middle Connector Remove the fixed sticker in between the Upper and Middle Connectors Tighten the connectors by holding one connector and twist middle connector to the right Connector Fixed sticker Middle Connector Middle Connector Connector Connecting Middle C...

Page 8: ...e tap Connect the water supply hose to the tap and then tighten it by screwing it to the right Check water leakage After connecting the hose open the tap to check for any water leakage Connecting Water Supply Hose to the machine Connect the water supply hose to inlet valve of the washing machine and then lock it by turning the hose connecting part Check to see if there is a rubber seal inside the ...

Page 9: ...n if you are unable to adjust water temperature and pres sure Do not over tighten the coupling nuts with a tool Inlets are plastic Do not strip or crossthread Cable Tie 0 9 1 2m 0 9 1 2m Cable Tie Connect the drain hose to the outlet of the drain pump located at the rear of the washing machine Attach the clip to the drain hose And then push it toward the body of the washing machine as indicated by...

Page 10: ...GS Use to level the washing machine for correct balance spin operation DRAIN HOSE Check if the drain hose is hung up before operating the washing machine FUNCTION SELECTOR POWER PLUG If the supply cord is damaged it must be replaced by the manufacturer or its service agents or similarly qualified person in order to avoid a hazard Clean regularly to stop linting on the clothes load Multi Clean filt...

Page 11: ... special stains with bar soaps liquid Detergent or a paste of water and granular Detergent Use a pretreat soil and stain remover Treat stains AS SOON AS POSSIBLE The longer they are left the harder they are to remove For more detail refer to page 13 Do not wash fabrics containing flammable materials waxes cleaning fluids etc Load Size The WATER LEVEL should just cover the clothes Adjust the load s...

Page 12: ...ns remember to use Detergent suitable for washing woolens The machine sets the appropriate temperature automatically according to the wash program You can change the Water Temperature by pressing the WASH RINSE button The temperature of the water impacts the effectiveness of all laundry additives and therefore the cleaning results We recommend temperatures of HOT 49 60 C 120 140 F White items diap...

Page 13: ...usor wash action the bleach is added to the wash load This ensures performance won t be diminished Two sequential flushe through the bleach dispenser completely removes the bleach from the dispenser Any residual liquid left in the dispenser at the end of the cycle is water not bleach To prevent self siphoning of the bleach into the wash basket and damage to your clothes never add more than the max...

Page 14: ...abric softener into the left hand compartment Use only liquid fabric softener Dilute with water to the maximum fill line Do not exceed the maximum fill line Overfilling can cause early dispensing of the fabric softener which could stain clothes NOTE Do not pour fabric softener directly on the wash load It may stain the clothes The Wash Boost dispenser may be used to clean heavily soiled or stained...

Page 15: ...abric Pretreat or soak in WARM water using product containing enzymes Wash using bleach safe for fabric Scrape residue from fabric Pretreat Wash using hottest water safe for fabric For heavy stains and tar apply nonflammable dry cleaning fluid to back of stain Replace towels under stain frequently Rinse throughly Wash using hottest water safe for fabric Some inks may be impossible to remove Washin...

Page 16: ...indicated as the button is pushed 1 2 3 4 12 14 16 18 24 HOUR Reservation off 1 To cancel delay time turn the power switch off or push DELAY WASH button until Reservation off refer to page 20 This button allows you to store a customized wash cycle for future use refer to page 23 This button allows you to select the strength of the wash action Power option selections light up in sequence as follows...

Page 17: ...k Hand Wash Speed Wash Rinse Spin Bulky Large Heavy Duty Fuzzy etc Select the desired program by pressing the button Use to select Water Wash Rinse Temperature Pressing the button allows you to select Warm Cold Warm Warm Hot Cold Tap Cold Cold Cold Cold respectively Default setting is Warm Cold The standard detected by the sensor changing the algorithm is set by the normal standard It may not be s...

Page 18: ...for heavily soiled durable garments e g overalls jeans Fuzzy This program is for mixed fabrics and automatically selects the most appropriate wash conditions such as wash action and cycle times by utilizing the built in load sensor Eco Cotton Eco Cotton is the program for normally soiled cotton material and designed to minimize water consumption Perm Press Use this mode for sport wears or syntheti...

Page 19: ...h Caution Note 5 6 7 5 6 7 5 6 7 5 6 7 5 6 7 Usage of Water is already optimized to every level Use this mode for bed clothes and big laundries Thick and heavy clothes or those which are excessively dirty like jeans or working uniforms can be washed ...

Page 20: ... lightly soiled Wool Silk Use this program for washing delicate fabrics such as lingerie and woolens wash only Water washable clothes Before washing your woolens check the care label for the washing instructions Wash only water washable clothes Hand Wash Use this program to the light garment e g Inner wear socks Speed Wash Use this program for lightly soiled garments Rinse Spin When you only need ...

Page 21: ...sure that the laundry is washable Washing with HOT water may damage the laundry Delicates clothes lingerie wool etc which may be easily damaged can be washed The fibers of machine washable woolens have been specifically modified to prevent shrink when they are machine washed Most hand knitted garments are not made of machine washable wool and we recommend that you hand wash them ...

Page 22: ...g tub Press the SPIN SPEED button The following settings are indicated as the button is pushed Low Medium High Extra High Low Press the START PAUSE button When the lid is open the machine will not operate and an alarm Signal or will remind you to close the lid when it starts 2 Close the lid Note Fill laundry uniformly in the inner tub 3 5 OTHER FUNCTIONS ...

Page 23: ...on 7 Press the Soak button to change the soaking time The following settings are indicated as the button is pushed 15 30 45 60 120 180min SOAK OFF When the lid is open the machine will not operate and an alarm Signal or will remind you to close the lid when it starts Select the cycle for laundry on the Control Panel 3 Close the lid 1 Add the laundry into the washing tub 2 Add the Detergent Note Th...

Page 24: ... will Delay turn on and TIME LEFT will be marked Press the button repeatedly to set the desired finishing time For example To finish washing in 9 hours from now by make the number 9 00 pressing the Delay Start Reservation button repeatedly RES Delay Add the laundry and press the START PAUSE button Finish When you press the START PAUSE button the light will blink The washing will be finished accord...

Page 25: ...tom cycle 1 Press POWER on 2 Select the Custom cycle by pressing the Custom Program button 3 Press the START PAUSE button Then the wash cycle starts 4 Custom Program Custom Program allows you to store a customized wash cycle for future use When the lid is open the machine will not operate and an alarm Signal or will remind you to close the lid when it starts 1 2 3 Add the laundry into the washing ...

Page 26: ...ram all the buttons are locked until washing is completed or it is child lock function is deactivated manually If you want to unlock during wash press both the SOIL LEVEL and the WASH RINSE button simultaneously again the remaining time are alternatively shown on the display while they are locked Turn Power on How to Lock Press the POWER button Press the START PAUSE button to start washing Press b...

Page 27: ...washing machine Concentrated bleaches and diaper sanitizer will cause damage to the paintwork and components of your washer Hydrocarbon solvents i e petrol paint thinners and lacquer thinners etc can dissolve plastic and blister paint Be careful when washing garments stained with these solvents as they are flammable DO NOT put them in washer or dryer Some pretreatment sprays or liquids can damage ...

Page 28: ...28 4 SERVICE INFORMATION 4 1 SCHEMETIC DIAGRAM Inverter Part ...

Page 29: ...29 4 2 SCHEMETIC DIAGRAM Display Part ...

Page 30: ...30 4 3 WIRING DIAGRAM FUSE 100V 127V 125V 12A TIME DELAY TYPE 220V 240V 250V 8A TIME DELAY TYPE CX AX GX ...

Page 31: ...2 2 1 1 1 1 1 1 1 1 30 30 2 30 2 30 2 1 30 1 30 1 1 2 30 2 2 1 30 1 30 1 30 1 2 30 2 2 2 1 30 1 30 1 30 7 7 7 7 7 7 7 19 18 18 18 18 18 17 7 7 7 7 7 7 7 7 7 7 7 7 7 7 4 4 4 4 4 4 4 67 65 64 63 61 59 58 76 75 74 73 71 70 69 47 46 44 43 42 41 40 46 45 44 42 41 40 39 35 34 33 32 31 30 29 7 6 5 4 3 2 1 7 10 kg 5 7 7 kg 4 3 5 7 kg 3 4 3 kg 2 3 kg 1 2 kg 0 1 kg 7 6 5 4 3 2 1 7 10 kg 5 7 7 kg 4 3 5 7 kg ...

Page 32: ...7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 8 2 30 2 30 2 2 1 30 1 30 1 30 2 30 2 30 2 2 2 1 1 3 3 3 2 2 2 2 2 30 2 30 2 30 2 30 2 30 2 30 2 30 3 3 2 30 2 1 30 1 1 4 4 4 4 4 4 4 7 7 7 7 7 7 7 7 7 7 7 7 7 7 18 18 18 18 18 18 18 7 7 7 7 7 7 7 35 34 33 32 31 30 29 35 34 32 31 29 28 27 23 23 21 20 20 19 18 58 58 58 58 58 58 58 61 60 58 57 54 53 52 7 6 5 4 3 2 1 7 10 kg 5 7 7 kg 4 3 5 7 kg 3 4 3 kg 2 3 kg 1 2 kg 0 1...

Page 33: ...ible touch earth wire on the body to remove electric deviation between the body and product before work CAUTION FOR ELECTROSTATICS 1 Disassembly of Front Panel PCB Main Display Assembly Remove two Panel fixing screws on the back side Pull the control panel forward Remove two screws on Main PCB Disassemble the protect cover Disconnect the leads from the controller Disassemble the rear Frame Unscrew...

Page 34: ...inlet Valve Disconnect the leads pressure tube from the BP sensor Tub Cover Inner Tub Cap Hub Fixing Nut Inner Tub Cap Out Tub Inner Tub Rotor Stator Rotor Nut Shaft Bearing Housing ASM 3 Disassembly of Lid Assembly Top Cover Tub Cover Pulsator Inner Tub Remove three lid fixing screws Disassemble the Lid Assembly in arrow direction Remove two top cover fixig screws in the rear then disassemble the...

Page 35: ... from the drain pump Remove the pump fixing screws and the connector hose to disassemble the drain pump 5 Replacement of Damper asm Separate top cover from washing machine As in the fig lift snubber bar and take it out of out case with out tub Damper assembly shall not be disassembled Replace damper as assembly For assembly keep the following Location color Location P No PIVOT Color ...

Page 36: ...tor Disassemble rotor nut with boxer M18 or spaner In assembled the force is over than 200kgf cm Disassemble rotor pull out the rotor as shown the figure Disconnect fixing screw and disassemble the water guide Before disassemble stator disconnect the hall sensor and stator housing ...

Page 37: ...tor Lower upper position screws Check the direction of SNAP RING The handle of snap ring is toward to rotor and stator Preventing fallen the stator tighten with one hand and then loosen the last screw For assembly take care lead wire s state it produce a noise and cut attach the rotor Loosen 16 Fixing screws on the Bearing Housing ASM and pull it up Loosen 2 Fixing screws on the Clutch Motor and p...

Page 38: ... t2 t3 Water Level Frequency A Water Level Frequency b All LEDS ON ALL LEDS OFF ALL LEDS OFF Chech each of buttons except Power and Start COLD Water ON Boost Dispenser Bleach Dispenser COLD Water ON Softener Dispenser Water Level Frequency C t4 Water Level Frequency t4 t5 13 Press 12 times 15 Press 14 times t7 Spin t6 COLD water and HOT Water ON Detergent Dispenser DRAIN PUMP ON Ex 333 233 If ther...

Page 39: ...ording to soil type refer to page 12 Reduce load size Wash with Heavy or Soak Heavy wash cycle for heavy soiled laundry Separate heavily soiled items from lightly soiled ones Pretreat stain and heavy soil according to directions shown on page 11 Rub the stain with bar soap Wash Do not overfill fabric softener dispenser and do not pour liquid fabric softener directly onto fabric See page 14 for mor...

Page 40: ...ze or dirt 3 Bad Drain Pump part or BLUE WHITE 2 pin connector to the P W B ASM has bad connection 1 Laundry in the INNER TUB is filled unevenly 2 Washer is tilted 1 Lid is opened during intermittent spin or normal spin 2 Lid is opened while processing reservation 3 Bad lead wire ASM or Connector to the Lid S W or RED 4pin connector to the P W B ASM has bad connection 1 Hang drain hose which is mi...

Page 41: ... Replace or Repair the outer tub Replace the Pressure sensor switch 1 Correct the connector contact 2 Replace PRESSURE S W ASM 1 Correct the connect contact 2 Correct the connect contact 3 Replace the Stator ASM 4 Replace the Bearing Housing ASM Otherwise Replace P W B ASM ERROR DECISION BASIS CAUSE FOR ERROR OCCURRENCE REMEDY CLUTCHING ERROR 1 Connector to the Clutch Motor or BLUE 3 Pin connector...

Page 42: ...he transfomer 3 Check whether the fuse is open Controller If there are no defects in the above it should be defect of the controller Poor Around rating 0 V Less than 1 Male female connectors separated Less than 0 5 More than 1 0 10 14 V 0 V Open Over 120 voltage than rating check Change the controller if all the electrical parts have no defects Defect of the electrical No defect Defect of househol...

Page 43: ...low To use a transfomer having a enough capacity if using a transfomer 3 Reset During operation Where what how to check Result of Check Possible Cause How to repair settle Main voltage 1 Measure voltage of the outlet that the washer is plugged into during wash and spin 2 Reset symptom happens at specific time zone repeatedly 3 Check whether a transfomerlent power cut happens Fluorescent lamp is tr...

Page 44: ...connector is taken off Ω Mains cut Mistake of use Wrong installation Mistake of use Don t clean Defect of the inlet valve Defect of contact Coil is open Explain Turn on the tap Correct their locations and turn on the tap Explain how to use Clean them by brush and explain cleaning regulary them Change the inlet valve Reconnect it or remove the causes to make poor connection Change the inlet valve I...

Page 45: ...ater fills even though it is not energized power is off Controller 1 Does water fill immediately after the power switch turns on before pushing the START PAUSE button Drain hose laying down Water leaks from a part It doesn t rotate Blocked Water fills Wrong installation Defect of the part Water pressure is not sensed Air hole blocked Defect of the inlet valve Short circuit of the triac of the cont...

Page 46: ...easure voltage of hall sensor asm 2 Check resistance of the motor Yellow Brown DC 15V OV Yellow Blue Yellow Red DC 12V OV Normal Resistance No defect Poor No defect Poor Motor coil is open Contact defect of the leak Change the PCB Asm Change the PCB Asm Change the motor Remove the cause Brown DC 15V Hall sensor assembly In PCB assembly Blue Red Yellow ground ...

Page 47: ...ect of installation Blocked hose Disassemble the drain pump cap and remove the foreign objects in the pump casing Change the drain pump Repair defected connection Change the controller Reinstall so that it should not be kinked Remove the objects and reinstall so that it can t be kinked 8 Water drains thought it is not the time of drain Where what how to check Result of Check Possible Cause How to ...

Page 48: ...s open Result of Check Possible Cause How to repair settle Lid Switch 1 Check resistance between both terminals of the lid switch with the lid open 0 9 Ω Ω Contact points of the lid switch is welded Defect of the controller Change the lead wire assembly Change the controller 8 Water drains thought it is not the time of drain Result of Check Possible Cause How to repair settle Drain Hose 1 Check wh...

Page 49: ... Laundry is unbalanced The pulsator rotates initially then the inner tub rotates Hit It is very important to find out what kinds of noise where comes from to settle noise during spin and accumulately service experiance Defect of installation Defect of the clutch Defect of the Suspension Level the washer Explain that it is not out of order and it may happen when big long laundry is washed Change th...

Page 50: ...r 1 Check whether power is automatically turned off when turning on the power switch after unplugging the power cord from the outlet 2 It would be defect of the controller if power is automatically tumed off immediately when turning on the power switch even though there is no defects in the power switch Automatically tumed off Mechanical defect of the power switch Change the switch Change the cont...

Page 51: ...51 5 EXPLODED VIEW BODY A BODY B TUB ...

Page 52: ...52 5 1 THE EXPLODED VIEW OF TOP COVER ASSEMBLY A100 A191 A020 A160 A050 A062 A110 A200 A201 A202 A230 A410 A061 A241 A063 F112 A011 A016 A180 A186 A182 A184 A390 A240 A380 A400 A276 A150 A152 A151 ...

Page 53: ...53 5 2 THE EXPLODED VIEW OF OUT CASE ASSEMBLY F070 F026 F080 F000 F032 F002 F003 F004 F005 F027 F020 F100 F090 F082 ...

Page 54: ...IFICATIONS 5 3 THE EXPLODED VIEW OF TUB ASSEMBLY K064 K000 K005 K021 K020 K100 K250 K061 K060 NATURAL K340 K345 K200 K210 K201 K305 K300 K170 K290 K230 K050 K068 K040 K030 K012 K350 K140 K202 K383 K382 K381 K380 ...

Page 55: ...60 P No MFL40322104 FEB 2007 PRINTED IN KOREA ...

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LG WT-R107, Service Manual

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