LG WT-H800 Service Manual
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LG WT-H800 Service Manual

LG WT-H800 Service Manual

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See also: Owner's Manual
WASHING MACHINE
SERVICE MANUAL
CAUTION
Before servicing the washer, Read the safety precautions in the manual.
MODELS : WT-H800 / WT-H950

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Summary of Contents for LG WT-H800

  • Page 1 WASHING MACHINE SERVICE MANUAL CAUTION Before servicing the washer, Read the safety precautions in the manual. MODELS : WT-H800 / WT-H950...
  • Page 2 APRIL. 2005 PRINTED IN KOREA P/No.: MFL40322113...

  • Page 3: 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 4: Specifications

    1. SPECIFICATIONS POWER SOURSE 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 Plastic / Stainless INLET WATER 0.5kgf/cm ~ 6kgf/cm PRESSURE...

  • Page 5: 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 6 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 7: 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 8 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 9 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 10: 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 11: Operating Instructions

    3. OPERATING INSTRUCTION 3-1. IDENTIFICATION OF PARTS WATER POWDER DETERGENT BOX SUPPLY HOSE FOR DELAYED WASHING / Make sure the SOFTENER BOX water does not leak. POWER PLUG If the supply cord is damaged, it must be BLEACH replaced by the DISPENSER( manufacturer or its FUNCTION...

  • Page 12: 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 13 Using Water Amount of WATER LEVEL • This machine detects the quantity of laundry automatically, then sets the WATER LEVEL and displays the amount of detergent to be used. • When you select a wash program, the WATER LEVEL and amount of Detergent (to be used) will be shown on the control panel.
  • Page 14 Using Detergent Detergent Follow the Detergent package directions. Using too little Detergent is a common cause of laundry problems as is if too much detergent is used. Only more Detergent if you have hard water, large loads, greasy or oily soils or lower Water Temperature. Choosing the right Detergent We recommend the use of drum type, low sudsing high efficiency Detergent(powder,liquid or concentrated).
  • Page 15 Using Liquid Bleach • Check clothing care label for special instructions and separate the laundry to be bleached • Dilute liquid chlorine bleach. • Measure the recommended amount of liquid bleach carefully following instructions on the bottle. • Before starting the washer, pour measured amount of bleach directly into bleach dispenser.

  • Page 16: 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 17: Function Of Each Button

    3-3. FUNCTION OF EACH BUTTON TIME LEFT, DELAY START WATER TEMPERATURE WATER LEVEL BUTTON (RESERVATION), ALARM INDICATION BUTTON (OPTION) • Use to select Water • Use to select the proper amount of water in • Time left - During operation, the remaining relation to the weight and type of laundry.
  • Page 18 WASHING CONDITION INDICATOR (OPTION) • It only operates in FUZZY Program. • During sensor detection, the LED flashes green, orange 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 19: Washing Programs

    3-4. WASHING PROGRAMS Washing Programs the Detergent laundry • Add the appropriate This program is for mixed fabrics quantity of Detergent as as normal operation. It is indicated by the automatically selects the most WATER LEVEL next to appropriate wash conditions such WATER DETERGENT.
  • Page 20 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 • Water will be let in •...
  • Page 21 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 or ECO COTTON or SILENT or FAVORITE program. Press the POWER (AUTO OFF) button to turn power on. Press the PROGRAM button to select the washing program.
  • Page 22 2) FAVORITE Wash Pressing the FAVORITE button allows you to store your FAVORITE wash conditions in the normal cycle memory and then recall it for use at a later time. Press the POWER (AUTO OFF) button to turn power on. Select the FAVORITE program.
  • Page 23 3) SILENT Wash Use this program to wash quietly in SILENT especially during late night and dawn. Press the POWER (AUTO OFF) 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 24 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 25: Delay Start Wash

    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 POWER (AUTO OFF) button to turn power on.
  • Page 26 6) AIR DRY AIR DRY can be used to further remove moisture after the wash cycle by subjecting the load to air currents within the machine. This function will not dry clothes completely and should only be used for loads under 2 kg. Press the POWER (AUTO OFF) button to turn power on.
  • Page 27 7) Option Washing When you only need the Wash, Wash/Rinse or Rinse cycles, these can be set manually. Press the POWER (AUTO OFF) button to turn power on. Only Spin Only Wash Only Rinse Press the WASH button to Press the RINSE button to Press the SPIN button to select the desired timing.

  • Page 28: Other Functions

    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 (AUTO OFF) button. •...

  • Page 29: Cleaning And Maintenance

    3-6. CLEANING AND MAINTENANCE When there is a possibility of freezing ambient temperatures. • 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 30: Service Information

    4. SERVICE INFORMATION 4-1. DISPLAY DIAGRAM...
  • Page 31 4-2. MAIN DIAGRAM...

  • Page 32: Wiring Diagram

    4-3. WIRING DIAGRAM...

  • Page 33: 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 34: 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 35 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 the power cord. Remove a valve fixing screw & disconnect the leads form the inlet valve.
  • Page 36 3) 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 disassemble the drain pump. 4) Replacement of Damper asm Separate top cover from washing machine.
  • Page 37 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 38 SNAP RING. Loosen the 6 fixing screws on the stator. (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.

  • Page 39: Trouble Shooting Against Common Washing Problems

    4-6. 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 Possible Causes Solutions & Preventive Measures Poor soil •...

  • Page 40: Trouble Shooting Methods According To Error Message

    • Is the washing machine placed on a flat surface? • Is too much soap being used. Door(Lid) Open • Is the lid closed? Abnormal level • Please call your nearest LG Electronics service center for sensing help. Overflow failure Abnormal motor...
  • Page 41 4-7. 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 WATER LEVEL Water faucet is closed? Open water faucet. SUPPLY dose not rise to Water supply is interrupted.
  • Page 42 ERROR DECISION CAUSE FOR ERROR ERROR REMEDY BASIS OCCURRENCE PRESSURE Water Pressure Connector the PRESSURE Correct the connector SENSOR Switch is off. S/W ASM or BLUE 4 pin contact. connector to P.W.B ASM has bad connection. PRESSURE S/W is bad. (In Replace PRESSURE S/W the initial state of QC TEST ASM.

  • Page 43: How To Diagnose And Repair By Symptom

    4-8. 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 44: 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 45: 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 46 5) Water fills continuously of intermittently How to repair & settle Where, what & how to check? Possible Cause Result of Check Wrong Installation/Leakage 1. Check whether the drain hose is laying Drain hose laying Wrong installation. The drain hose should be down.
  • Page 47 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. Gray-White DC 15V No defect Hall sensor assembly...

  • Page 48: 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 working sound.
  • Page 49 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 50 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 51 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 52 (2) Inaccurate detecting How to repair & settle Problems Result of Check the accumulated foreign materials on • The difference between the sensing Change the sensor, clean the electrode of value measured from the supplied sensor Stop the sensor working* the sensor water by a jig and the sensor value of the product is 5 or more..
  • Page 53 (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 54: Exploded View

    5. EXPLODED VIEW TOP COVER ASSEMBLY TUB ASSEMBLY CABINET ASSEMBLY...
  • Page 55 5-1. THE EXPLODED VIEW OF TOP COVER ASSEMBLY A020 A010 A023 A030 A040 A050 A240 A202 A053 A201 A200 A062 A400 A061 A241 A190 A210 A152 A151 A160 A230 A100 A220 A160 A180 HOT/COLD A270 A183...
  • Page 56 5-2. THE EXPLODED VIEW OF OUT CASE ASSEMBLY F070 F001 F000 F080 F082 F084 F081 F090 F020 F023 F027 F023 F050...
  • Page 57 5-3. THE EXPLODED VIEW OF TUB ASSEMBLY K005 K000 K012 K021 K020 K030 K040 K050 K061 K068 K060 NATURAL K100 K383 K250 K380 K064 K370 K170 K140 K382 K381 K345 K340 K200 K290 K202 K230 K210 K201 K305 K300...

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Wt-h950

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