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LG WT-R107 Service Manual

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WASHING MACHINE

SERVICE MANUAL

CAUTION
Before servicing the washer, Read the safety precautions in the manual.
MODEL : WT-R107
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Summary of Contents for LG WT-R107

  • Page 1: Washing Machine

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

  • Page 2: Table Of Contents

    SAFETY PRECAUTION! DISASSEMBLE 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 or property damage.

  • Page 3: Specifications

    1. SPECIFICATIONS Model WT-R107 Power Refer to rating label on the back of Washer Input Refer to rating label on the back of Washer Capacity Refer to rating label on the back of Washer Inner Tub Stainless Inlet Water Pressure 0.5kgf/cm...

  • Page 4: Installation Instructions

    2. INSTALLATION INSTRUCTIONS 2-1. HOW TO ADJUST LEVEL Installation area Set rear legs Remove the level and tilt the washer Install the washer on flat and firm forward (pivot on front legs) about 4 to surface. 6 inches (10 to 15cm) and gently If the washer is installed on an lower the rear legs back onto the floor.
  • Page 5 Checking slope Confirming level If installation surface is tilted, the Place the washer to original position washer will be shaken. and confirm the level. Horizontal setting Distance between drain hose and the wall Lift up the front of the washer and adjust level by turnings the adjustable Distance between drain hose and the wall should be more than 10cm,...

  • Page 6: Connecting Water Supply Hose

    2-2. CONNECTING WATER SUPPLY HOSE Before connecting the Water Supply Hose to the water tap, check the hose type and then choose the correct instruction here under. Note that the Water Supply Hose supplied may vary from country to country, Make sure to connect the blue inlet hose to the COLD water tap, and the orange inlet hose to the HOT water tap.
  • Page 7 One Touch Type (Normal tab without thread & one touch type inlet hose.) Separate Middle connector from Water Supply Hose Separate Middle connector from the Water Supply Hose by Middle connector Fixed Sticker pulling the Pressing Rod and the Pressing Handlre that is Pressing Handle attached to the Water Supply Hose.
  • Page 8 Screw Type Attach the water supply hose to the tap. Push the water supply hose up so that the rubber packing Water within the hose can adhere completely to the tap. Rubber Packing Water Supply Hose Connect the water supply hose to the tap. Connect the water supply hose to the tap and then tighten it by screwing it to the right.

  • Page 9: Connect The Drain Hose

    2-3. CONNECT THE DRAIN HOSE Connect the drain hose to the Attach the clip to the drain hose. Check that the drain hose is hung outlet of the drain pump located at And then push it toward the body of up over the edge of the laundry tub.

  • Page 10: Operating Instructions

    3. OPERATING INSTRUCTION 3-1. IDENTIFICATION OF PARTS Body HOT WATER SUPPLY Powder detergent HOSE Box for delayed washing/softener additves box COLD WATER SUPPLY HOSE Make sure the water does not leak. POWER PLUG If the supply cord is damaged,it must be replaced by the INLET HOLE FOR manufacturer...

  • Page 11: Before Starting To Wash

    Use nylon nets for long, DELICATES items. For laundry with long strings or long length, a net will prevent tangling during washing. Fasten zippers, hook, and strings to make sure that these items don't snag on other clothes. Nylon net is not supplied by LG.
  • Page 12 Using Water Amount of WATER LEVEL This machine detects the quantity of laundry automatically, then sets the proper amount of water. Water Temperature 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.
  • Page 13 Using the Liquid Bleach Dispenser The bleach dispenser automatically dilutes and dispenses liquid chlorine bleach at the proper time in the wash cycle. 1. Check clothing care labels for special instructions. 2. Measure liquid bleach carefully, following instructions on the bottle.
  • Page 14 Adding Detergent Add measured detergent to the detergent compartment of the dispenser drawer. • Do not exceed the maximum fill line. Detergent is flushed through the dispenser at the beginning of the wash phase. Either powdered or liquid detergent can be used.

  • Page 15: Stain Removal

    Special Guide for Stain Removel WARNING Do not use or mix liquid chlorine bleach with other household chemicals such as toilet cleaners, rust removers, acid or products containing ammonia. These mixtures can produce dangerous fumes which can cause serious injury or death. To reduce the risk of fire or serious injury to persons or property, comply with the basic warnings listed below: Read and comply with all instructions on stain removal products.

  • Page 16: Function Of Each Button

    3-3. FUNCTION OF EACH BUTTON. POWER BUTTON DELAY WASH (Reservation) BUTTON Use to turn the power on or off. Use to set a delayed finishing time. Push again and power goes on or off The time increases when the button is pushed. The power goes off automatically after the wash is The following settings are indicated as the button is finished.

  • Page 17: Spin Speed

    START/ PAUSE BUTTON BEEPER BUTTON SPIN SPEED Beeper alerts you that the cycle is complete. Use to start or pause the wash cycle. Spin speed can be selected The clothes should be removed when the Changes can be made to the wash from No Spin to Extra beeper goes off so wrinkles won't set on.

  • Page 18: Washing Programs

    3-4. WASHING PROGRAMS. Function information Close the lid the laundry Detergent Bulky/Large This mode is for a big size garment. Heavy Duty Use this Program 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...
  • Page 19 Caution & Note Finish Select the program on the Control panel. 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. Usage of Water is already optimized to every level.

  • Page 20: Hand Wash

    Function information Close the lid the laundry Detergent Delicates Use this program to wash times requiring a gentle wash action.This would include blouses, nylons and dress shirts which are lightly soiled. Wool / Silk Use this program for washing delicate fabrics such as lingerie and woolens.(wash only "Water washable"...
  • Page 21 Caution & Note Finish Select the program on the Control panel. Before starting to wash,make 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.

  • Page 22: Other Functions

    3-5. OTHER FUNCTIONS 1) Spin Only When you only need the Spin cycles,this can be set manually. Add the laundry into the washing tub. Close the lid When the lid is open the machine will not operate, and an alarm Signal or “...
  • Page 23 2) Soak Wash Use this mode to wash normal clothes or thick and heavy clothes which are excessively dirty. Soak mode can be used all program except Rinse/Spin. Add the laundry into the washing tub. Add the Detergent. Add the detergent in the right-hand compartment for Soak Wash cycle and in the middle compartment for main wash cycle.
  • Page 24 3) Delay Wash (Reservation) Delay Wash (Reservation) is used to delay the finishing time of the operation. The hours to be delayed can be set by the user accordingly. The time on the display is the finishing time, not the start time. Add the laundry into the washing tub.
  • Page 25 4) Custom Program Custom Program allows you to store a customized wash cycle for future use. Add the laundry into the washing tub. Add the Detergent Close the lid When the lid is open the machine will not operate, and an alarm Signal or “...
  • Page 26 5) Child Lock If you want to lock all the keys to prevent settings from being changed during the wash operation by a child, you can use the child lock option. How to Lock Press the POWER button Turn Power on. Press the START/PAUSE button to start washing.

  • Page 27: Care And Maintenance

    3-6. CARE AND MAINTENANCE When there is a fear of freezing Close the water taps and remove the Water Supply Hose. Remove the water which remains in the water supply. Lower the drain hose and drain the water in the bowl and the drain hose by spinning. If Frozen Remove the water supply hose, and immerse it in HOT water at approx..40°C.

  • Page 28: Service Information

    4. SERVICE INFORMATION 4-1. SCHEMETIC DIAGRAM (Inverter Part)

  • Page 29: Schematic Diagram(Display Part)

    4-2. SCHEMETIC DIAGRAM (Display Part)

  • Page 30: Wiring Diagram

    4-3. WIRING DIAGRAM...

  • Page 31: Program Time Chart

    4-4. PROGRAM TIME CHART Wash Rinse Spin Soak Wash Rinse1 Rinse2 Load Level 7~10 kg 10" Fuzzy 5.7 ~7 kg 10" 4.3 ~ 5.7 kg 10" 3 ~ 4.3 kg 10" 2 ~ 3 kg 10" 1 ~ 2 kg 10"...
  • Page 32 Wash Rinse Spin Soak Wash Rinse1 Rinse2 Load Level 7~10 kg 2'30" 3'30" 10" 3'30" 2'30" Hand 5.7 ~7 kg 4'30" 2'30" 3'30" 10" 3'30" 4'30" 2'30" Wash 4.3 ~ 5.7 kg 4'30" 3'30" 10" 3'30" 4'30" 3 ~ 4.3 kg 3'30"...

  • Page 33: Disassembly Instrucion

    4-5. DISASSEMBLY INSTRUCION Be sure to unplug the power to repair and replace electric parts. CAUTION FOR ELECTROSTATICS Be sure to make earth connection for trouble diagnosis and parts replacement. If impossible, touch earth wire on the body to remove electric deviation between the body and product before work.

  • Page 34: Pressure Switch

    2) Disassembly of Power Cord, Inlet Inlet Valve Valve ASM, D.T Housing ASM and Pressure Switch. Disassemble back panel. Disconnect three connectors ans disassemble the power cord. Remove two pipe fixing screws and three inlet valve screws. Disconnect the leads from the inlet valve. Separate the pipe and the connector hose from the inlet valve.
  • Page 35 4) Disassembly of Back cover, Drain Pump. Remove back cover fixing screws then disassemble the back cover. Disconnect the leads and the drain hose-p 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.
  • Page 36 6) Replacement of Rotor & Stator 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. Fixing Bolt Disconnect fixing screw and disassemble the water guide.
  • Page 37 SNAP RING. Loosen the 6 fixing screws on the stator. Clutch Motor (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 Clutch Motor then loosen the last screw.

  • Page 38: Test Running Without Water

    4-6. TEST RUNNING WITHOUT WATER 1) METHOD TO USE QC TEST MODE To use the CHECK PROGRAM (QC TEST MODE), press WASH/RINSE, SPIN SPEED and POWER button ON without depositing any laundry. START(PAUSE) button to check over the following items. CHECK METHOD DISPLAY CHECK ITEM...

  • Page 39: Trouble Shooting Methods Against Common Washing Problems

    4-7. TROUBLE SHOOTING AGAINST COMMON WASHING PROBLEMS Many washing problems involve poor soil & stain removal, residues of lint and scum, and fabric damage. For satisfactory washing results, follow these instructions. WASHING PROBLEM Problems Possible Causes Solutions& Preventive Measures Poor soil Not enough Detergent Use correct amount of Detergent for load size, amount of soil and Wash Water Temperature too low.

  • Page 40: Trouble Shooting Methods According To Error Message

    4-8. TROUBLE SHOOTING METHODS ACCORIDNG TO ERROR MESSAGE For more detailed information for trouble shooting refer to page 42 to 51. ERROR DECISION CAUSE FOR ERROR ERROR REMEDY BASIS OCCURRENCE WATER 1. Drain hose is hung on to 1. Hang drain hose which is WATER LEVEL SUPPLY dose not rise to...
  • Page 41 ERROR DECISION CAUSE FOR ERROR ERROR REMEDY BASIS OCCURRENCE PRESSURE 1.Connector to the PRESSURE S/W 1. Correct the connector contact. Water Pressure ASM or RED 4 pin connector to SENSOR Switch is off. P.W.B ASM has bad connection. 2.PRESSURE S/W is bad. (In the 2.

  • Page 42: How To Diagnose And Repair By Symptom

    4-9. HOW TO DIAGNOSE AND REPAIR BY SYMPTOM 1) Washer is not energized. How to repair & settle Where, what & how to check? Possible Cause Result of Check Household Power supply Poor Defect of the electrical Change the electrical. 1.

  • Page 43: Reset During Operation

    2) Defects on displaying funcion How to repair & settle Where, what & how to check? Possible Cause Result of Check Main voltage Less than 85% of the Low voltage To explain that it is 1. Measure mains voltage at the wall outlet rating caused by low voltage in electric supply and...

  • Page 44: Water Doesn't Come Into The Wash Tub

    4) Water doesn’t come into the wash tub. How to repair & settle Where, what & how to check? Possible Cause Result of Check Inlet Valve 1. If water doesn’t come though the inlet valve works(electric sound occurs) 1) Check whether water mains is cut. Water mains cut.
  • Page 45 5) Water fills continuously of intermittently How to repair & settle Where, what & how to check? Possible Cause Result of Check Wrong Installation/Leakage Drain hose laying Wrong installation. The drain hose should be 1. Check whether the drain hose is laying down on the floor.
  • Page 46 6) Display "LE" message and doesn't work How to repair & settle Where, what & how to check? Possible Cause Result of Check 1. In initial state display “LE ” message. 1) Measure voltage of hall sensor asm. Yellow - Brown DC 15V No defect Hall sensor...

  • Page 47: Water Does Not Drain

    7) Water does not drain. How to repair & settle Where, what & how to check? Possible Cause Result of Check Drain Pump 1. Check whether there is drain pump There is pump Drain pump is blocked by Disassemble the drain pump cap and remove the working sound.
  • Page 48 8) Water drains thought it is not the time of drain. How to repair & settle Where, what & how to check? Possible Cause Result of Check Drain Hose 1. Check whether the drain hose is The discharge height Wrong installation of the Put the outlet of drain hose installed properly so that the discharge is lower than...
  • Page 49 11) Vibration, Noise or Unbalance Error happens during spin. How to repair & settle Where, what & how to check? Possible Cause Result of Check Using conditions such as installation etc. 1. Check whether the washer is leveled. Not leveled. Defect of installation Level the washer.
  • Page 50 12) Power is automatically turned off during operation or immediately turning on the power button. How to repair & settle Where, what & how to check? Possible Cause Result of Check Auto Power Relay or Controller 1. Check whether power is automatically Automatically tumed Mechanical defect of the Change the switch.

  • Page 51: Exploded View

    5. EXPLODED VIEW BODY-A BODY-B...
  • Page 52 5-1. THE EXPLODED VIEW OF TOP COVER ASSEMBLY A011 A016 F112 A062 A202 A050 A201 A200 A151 A180 A184 A160 A390 A152 A020 A150 A182 A186 A061 A400 A110 A241 A410 A063 A230 A100 A191 A240 A380 A276...
  • Page 53 5-2. THE EXPLODED VIEW OF OUT CASE ASSEMBLY F032 F004 F005 F070 F002 F003 F000 F100 F090 F026 F080 F020 F082 F027...
  • Page 54 1. SPECIFICATIONS 5-3. THE EXPLODED VIEW OF TUB ASSEMBLY K005 K000 K012 K021 K020 K030 K040 K050 K061 K068 K060 NATURAL K100 K383 K250 K350 K380 K064 K170 K140 K382 K381 K345 K340 K200 K290 K202 K230 K210 K201 K305 K300...
  • Page 55 FEB. 2007 PRINTED IN KOREA P/No.:MFL40322104...

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