1. Manuals
  2. Brands
  3. LG Manuals
  4. Washer
  5. WF-T857
  6. Service manual

LG WF-T857 Service Manual

Hide thumbs Also See for WF-T857:
Table of Contents

Advertisement

Quick Links

See also: Owner's Manual

WASHING MACHINE

SERVICE MANUAL

CAUTION
Before servicing the washer, Read the safety precautions in the manual.
MODELS: WF-T857

Advertisement

Table of Contents
loading

Related Manuals for LG WF-T857

Summary of Contents for LG WF-T857

  • Page 1: Washing Machine

    WASHING MACHINE SERVICE MANUAL CAUTION Before servicing the washer, Read the safety precautions in the manual. MODELS: WF-T857...

  • Page 2: Table Of Contents

    SAFETY PRECAUTION! DISASSEMBLE POWER CORD BEFORE SERVING 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 Refer to rating label on the back of Washer POWER SOURSE INPUT Refer to rating label on the back of Washer CAPACITY Refer to rating label on the back of Washer INNER TUB Plastic / Stainless INLET WATER 0.5kgf/cm ~ 6kgf/cm PRESSURE...

  • Page 4: Installation Instructions

    2. INSTALLATION INSTRUCTIONS 2-1. HOW TO ADJUST LEVEL Installation area • Install the washer on flat and firm surface. Checking level • Open the lid, and check if the washer is correctly leveled by looking down from the top. Adjustable leg Turn the adjustable legs to set the washer horizontal (2 EA).
  • 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 •...

  • Page 6: Connecting Water Supply Hose

    2-2. CONNECTING WATER SUPPLY HOSE Before connecting Water Supply Hose to water tap, check your hose type and choose correct instruction. Water Supply Hose may vary according to the country. Make sure connect blue inlet hose to COLD water tab, and orange inlet hose to HOT water tab. Connecting Water Supply Hose to water tap Normal Type {Normal tab without thread &...
  • Page 7 One Touch Type (NORMAL TAB WITHOUY THREAD & ONE TOUCH TYPE INLET HOSE.) Separate Middle connector from Water Supply Hose Separate Middle connector from the Water Conector Middle connector Etiqueta Fija Fixed Stiicker Supply Hose by pulling the Pressing Rod and Medio Manija de Presión Pressing Handle...
  • Page 8 Screw Type Attach the water supply hose to the tap. Push the water supply hose up so that the rubber packing within the hose can adhere completely Water to the tap. Water Supply Hose Rubber Packing 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 For pump model • Connect the drain hose to the • Attach the clip to the drain hose. • Check that the drain hose is outlet of the drain pump located And then push it toward the body hung up over the edge of the at the rear of the washing of the washing machine as...

  • Page 10: Operating Instructions

    3. OPERATING INSTRUCTION 3-1. IDENTIFICATION OF PARTS POWDER AND LIQUID DETERGENT BOX WATER SUPPLY HOSE Make sure the water does not * SOFTENER INLET leak. Softner will automatically flow into the tub. POWER PLUG If the supply cord is BLEACH damaged, it must be DISPENSER replaced by the...

  • Page 11: Before Starting To Wash

    Use nylon nets for long, DELICATE 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: Water Temperature

    Using Water Amount of WATER LEVEL • This machine detects the quantity of laundry automatically, then sets the WATER LEVEL and proper amount of Detergent. • When you select a wash program, the WATER LEVEL and amount of Detergent (to be used) will be shown on the control panel.

  • Page 13: How Much Detergent

    Using Detergent How much Detergent When you select a wash program the WATER LEVEL and the amount of Detergent (to be used) will be shown on the control panel. The amount of a cup in the diagram is about 40g for concentrated Detergent. The correct amount of Detergent will vary depending on the amount of soil in your clothes (Jeans and work cloches may need more Detergent, while bath towels usually need less.).
  • Page 14 Using Fabric Softener • Dilute fabric softener with water. Undiluted fabric softener may result in spots that look like oil stains. Softener dispenser ( • Measure and add the recommended amount of fabric softener into the compartment marked with this symbol( Follow manufacturer’s direction.

  • Page 15: Special Guide For Stain Removal

    SPECIAL GUIDE FOR STAIN REMOVAL 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: •...

  • Page 16: Function Of Each Button

    3-3. FUNCTION OF EACH BUTTON TIME LEFT, DELAY START WATER LEVEL BUTTON WATER TEMPERATURE (RESERVATION), ALARM INDICATION (INDICATION OF DETERGENT AMOUNT) BUTTON (OPTION) Use to adjust the WATER LEVEL as required. The - During operation, the remaining time appropriate amount of Detergent is shown next to the is indicated.
  • Page 17 WASHING CONDITION INDICATOR (OPTION) and red in turn. And, after detecting, the LED lights a specific color according to the detecting condition as follows: If the current washing condition (Detergent quantity, Water Temperature, water quality, etc.) is determined as better than the standard one, it optimizes the algorithm to save the energy by decreasing washing time/strength, and the LED automatically turns to red.

  • Page 18: Washing Programs

    3-4. WASHING PROGRAMS Washing Programs the Detergent laundry FUZZY Wash Used for normal loads, this mode automatically selects the most appropriate • Add the appropriate quantity conditions and completes the sequence in of Detergent as indicated by one operation. The built-in sensor detects the WATER LEVEL next to the size of the load and the ideal wash WATER DETERGENT.
  • Page 19 Close the lid Finish Caution & Note • If water is already in the tub, or putting wet laundry into the tub before starting will increase the WATER LEVEL. • The pulsator rotates for 8 • Water will be supplied •...

  • Page 20: Other Functions

    3-5. OTHERS FUNCTIONS 1) SOAK Wash Use this mode to wash normal clothes or thick and heavy clothes which are excessively dirty. SOAK mode can be used with FUZZY or JEAN, SILENT or FAVORITE program. Press the AUTO OFF (POWER) button to turn power on. Press the PROGRAM button to select the washing program.
  • Page 21 3-5. OTRAS FUNCIONES FAVORITE Wash Pressing the favourite button allows you to store your favourite wash conditions in the normal cycle memory and then recall it for use at a later time. Press the AUTO OFF (POWER) button to turn power on. Select the FAVOURITE program.
  • Page 22 3-5. OTRAS FUNCIONES 3) SILENT Wash Use this program to wash quietly in SILENT especially during late night and dawn. Press the AUTO OFF (POWER) button to turn power on. Press the PROGRAM button to select SILENT program. Add the laundry into the washing tub. Press the START/PAUSE button.
  • Page 23 3-5. OTRAS FUNCIONES 4) NORMAL WASH Normal is the economical program to minimize water consumption. Press the AUTO OF(POWER) button to turn power on. Press the PROGRAM button to select the NORMAL program. • Ex-Large WATER LEVEL is set automatically. Add the laundry into the washing tub.

  • Page 24: Add The Detergent

    3-5. OTRAS FUNCIONES 5) DELAY START (RESERVATION) Wash DELAY START (RESERVATION) Wash 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. Press the AUTO OFF (POWER) button to turn power on.
  • Page 25 3-5. OTRAS FUNCIONES 6) AIR DRY AIR DRY for your laundary. Press the AUTO OFF (POWER) button to turn power on. Press the AIR DRY button to select the desired timing. Press the START/PAUSE button. Closed the lid. NOTE Select "Air Dry" 30min Tub Dry -Use this mode to keep inner tub from getting moldy caused by remaining moisture.
  • Page 26 3-5. OTRAS FUNCIONES 7) Option Washing When you only need the Wash, Wash/Rinse or Rinse cycles, these can be set manually. Press the AUTO OFF (Power) button to turn power on. Only Wash Only Spin Only Rinse Press the WASH button to Press the RINSE button to select Press the SPIN button to select select the desired timing.
  • Page 27 3-5. OTRAS FUNCIONES 8) Other Useful Functions Child Lock Function If you want to lock all the keys to prevent settings from being changed by a child, you can use the child lock option. How to Lock Press the POWER button. •...

  • Page 28: 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 •...

  • Page 29: Service Information

    4. SERVICE INFORMATION 4-1. SCHEMETIC DIAGRAM 1' 1' 2' 2' 3' 3' 1' 1' 2' 2' 1' 1' 2' 2' 2' 2' 1' 1' 1/8W 10k 1/8W 1/8W 10k 1/8W 1/8W 10k 1/8W 1/8W 10k 1/8W 1/8W 10k 1/8W 1/8W 10k 1/8W 1/8W 10k 1/8W...

  • Page 30: Wiring Diagram

    4-2. WIRING DIAGRAM...

  • Page 31: Program Time Chart

    4-3. PROGRAM TIME CHART Spin Power Spin Speed High Spin Intermittent Drain Rinsing Supply Water Spin Power Spin Intermittent Drain Rinsing Supply Water Spin Intermittent Spin Speed High Spin Intermittent Drain Shower Spin Power Spin Intermittent Drain Washing Soak Supply Water...

  • Page 32: Adjustmen

    4-4. ADJUSTMENT 1) Brake lever adjustment • Shown as in the figure, untighten the adjustment screw to keep clearance less than 1.9°æ0.1mm between the tip and the brake lever. And turn on the lock nut then paint it red. CAUTION •...

  • Page 33: Disassembly Instruction

    4-5. DISASSEMBLY INSTRUCTION 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 2) Disassembly of Back Panel, Power Cord, Inlet Valve & BP Sensor Remove two back panel fixing screws in the back side. Disassemble the back panel. Disconnect two connectors and disassemble Back Panel the power cord. Remove a valve fixing screw & disconnect the leads form the inlet valve.
  • Page 35 3) Disassembly of Lid Assembly, Top Cover, Tub Cover, Pulsator & Inner Tub Remove Q-spring & two hinge pins then Tub cover disassemble the lid assembly Remove two top cover fixing screws in the rear then disassemble the top cover. Inner tub Remove tub cover fixing screws then disassemble the tub cover.

  • Page 36: Test Running Without Water

    4-6. TEST RUNNING WITHOUT WATER • To use the CHECK PROGRAM (QC TEST MODE), press WATER LEVEL and POWER button ON without depositing any laundry. • In QC TEST MODE all LEDs are on and press START(PAUSE) button to check over the following items. NO CHECK METHOD DISPLAY CHECK ITEM...

  • Page 37: Trouble Shooting 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. WASH PROBLEM Problems Solutions & Preventive Measures Possible Causes •...

  • Page 38: Trouble Shooting Methods According To Error Message

    4-8. TROUBLE SHOOTING METHODS ACCORDING TO ERROR MESSAGE For more detailed information for trouble shooting refer to page 46 to 57. ERROR DECISION CAUSE FOR ERROR ERROR REMEDY BASIS OCCURRENCE • Open water faucet. • Water faucet is closed? WATER •...
  • Page 39 ERROR DECISION CAUSE FOR ERROR ERROR REMEDY BASIS OCCURRENCE • LID is opened in the • Lid is opened during intermittent • Closed the lid. DOOR course of spin or normal spin? OPEN intermittent spin, • Lid is opened while processing •...

  • Page 40: How To Diagnose And Repair By Symptom

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

  • Page 41: Reset During Operation

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

  • Page 42: Water Doesn't Come Into The Wash Tub

    3) Reset during operation Where, what & how to check? Result of Check Possible Cause How to repair & settle Drain Motor 1. Operate washer setting spin only, Reset happens Change the drain motor Defect of the drain after the drain then press the START/PAUSE button motor (A noise motor works.
  • Page 43 4) Water doesn’t come into the wash bowl. Where, what & how to check? Result of Check Possible Cause How to repair & settle Ball Pressure Sensor Reconnect the connector (Pressure Switch) Connector is taken PE Error or change leads. Change off, or lead or coil is displayed.
  • Page 44 6) Pulsator doesn’t rotate normally. Where, what & how to check? Result of Check Possible Cause How to repair & settle Pulsator rotates at one direction. Turn the power off and on again then that Clockwise 1. The Pulsator rotates normally at the Unusual operation.

  • Page 45: Water Does Not Drain

    6) Pulsator doesn’t rotate normally. Where, what & how to check? Result of Check Possible Cause How to repair & settle 4. Pulsator weakly rotates. Less than 85% 1) Check voltage at the power outlet Explain the causes and a Lower voltage.
  • Page 46 7) Water does not drain. Where, what & how to check? Result of Check Possible Cause How to repair & settle 4. Check whether the drain hose is Blocked. Blocked hose. Remove the objects and blocked by foreign objects. It may reinstall so that it can’t happen in case of the hose is a little be kinked.
  • Page 47 8) Water drains though it is not the time of drain. Where, what & how to check? Result of Check Possible Cause How to repair & settle Drain Motor (for Non-Pump Model only) Change the drain motor. Blocked. Defect of the drain 1.
  • Page 48 10) Spin extraction is not proceeded. Where, what & how to check? Result of Check Possible Cause How to repair & settle Motor 1. In the case that the wash motor does not Change the capacitor There is motor Defect of the spin during spin extraction;...
  • Page 49 11) Spining is going on even though the lid is open. Where, what & how to check? Result of Check Possible Cause How to repair & settle Safety Switch Contact points of Change Safety 1. Check resistance between both the safety switch Switch terminals of the safety switch with are welded.
  • Page 50 13) Vibration, Noise or Unbalance Error happens during spin. Where, what & how to check? Result of Check Possible Cause How to repair & settle Using conditions such as installation etc. Level the washer. Not leveled. Defect of 1. Check whether the washer is installation leveled.
  • Page 51 14) Power is automatically turned off during operation or immediately turning on the power switch. Where, what & how to check? Result of Check Possible Cause How to repair & settle Main voltage Defect in main. Explain the cause. 1. It is mostly caused by noise from (It happens specially mains or transfomerient power cut.
  • Page 52 Sensor (1) Malfunction Problems Result of check How to repair and settle • If the value is not within 1~26 by Recalibrate or replace the Assembling the not- checking the controller group. controller. calibrated controller. • When checking the value of the Check the harness, Short electrode sensor by Test mode during...
  • Page 53 (3) Activate/Deactivate Sensor: Turn the power switch on by pressing WATER LEVEL+STAIN LEVEL+RESERVATION button together. Test mode : Only I-SENSOR LED is on and display shows current sensing mode Current display : temperature & conductivity sensing is disabled : temperature sensing is enabled, but conductivity is disabled. : temperature &...
  • Page 54 (5) How to use Jig How to Connect • Loosening the front panel of the washing machine Sensor and connect the sensor connecting terminal with the terminal of the jig. After supplying water to the washing bath, agitate for one minute before using the jig. Record the sensed value of the sensor attached to the current product at Test mode.

  • Page 55: Exploded View

    5. EXPLODED VIEW TOP COVER ASSEMBLY TUB ASSEMBLY CABINET ASSEMBLY...
  • Page 56 5-1. THE EXPLODED VIEW OF TOP COVER ASSEMBLY A020 A010 A023 A051 A030 A026 A040 A052 A240 A202 A053 A201 A200 A060 A190 A210 A152 A151 A160 A230 A100 A220 A160 A181 A184 HOT(ORANGE) A275 COLD(BLUE) A276 A185...
  • Page 57 5-2. THE EXPLODED VIEW OF OUT CASE ASSEMBLY F070 F001 F000 F080 F082 F084 F081 F090 For Pump F020 F023 F024 F023 F050...
  • Page 58 5-3. THE EXPLODED VIEW OF TUB ASSEMBLY K000 K090 K012 K010 K011 K021 K025 K027 K020 K028 K060 K063 K201 K030 K062 K040 K200 K160 K050 K061 For Pump K210 K140 K220 K250 K064 K370 K230 K100 K130 K263 K262 For Pump K170 K260...

  • Page 59: Replacement Part List

    June. 2007 PRINTED IN KOREA P/No.:MFL40322101...

Table of Contents