LG WD(M)-8070F(H)(B) Service Manual
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LG WD(M)-8070F(H)(B) Service Manual

LG WD(M)-8070F(H)(B) Service Manual

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WASHING MACHINE

SERVICE MANUAL

CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : WD(M)-8070F(H)(B)
WD(M)-1070(5)F(H)(B)
WD(M)-1170(5)F(H)B
WD(M)-1270(5)F(H)B
WD(M)-1370(5)F(H)B
WD-8078FHB
WD(M)-8074F(H)B
WD(M)-1074(6)F(H)B
website : http://www.LGEservice.com
e-mail : http://LGEservice.com/techsup.html
WD(M)-1174(6)F(H)B
WD(M)-1274(6)F(H)B
WD(M)-1374(6)F(H)B
WD-1078FHB
WM-1171(6)FHB
WM-1371(6)FHB
WD-1271FB

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Summary of Contents for LG WD(M)-8070F(H)(B)

  • Page 1: Washing Machine

    website : http://www.LGEservice.com e-mail : http://LGEservice.com/techsup.html WASHING MACHINE SERVICE MANUAL CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE. MODEL : WD(M)-8070F(H)(B) WD(M)-1174(6)F(H)B WD(M)-1070(5)F(H)(B) WD(M)-1274(6)F(H)B WD(M)-1170(5)F(H)B WD(M)-1374(6)F(H)B WD(M)-1270(5)F(H)B WD-1078FHB WD(M)-1370(5)F(H)B WM-1171(6)FHB WD-8078FHB WM-1371(6)FHB WD(M)-8074F(H)B WD-1271FB WD(M)-1074(6)F(H)B...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATION..........................3 2. FEATURES & TECHNICAL EXPLANATION ................4 3. PARTS IDENTIFICATION ......................6 4. INSTALLATION ..........................7 5. OPERATION ..........................10 6. WIRING DIAGRAM........................12 7. PROGRAM CHART ........................13 8. TROUBLESHOOTING.........................14 8-1.BEFORE PERFORMING SERVICE ..................14 8-2.QC TEST MODE........................14 8-3.HOW TO KNOW THE WATER LEVEL FREQUENCY............14 8-4.ERROR DISPLAY ........................15 9.

  • Page 3: Specification

    1. SPECIFICATION WD(M)-8070F(4)(H)B/1070(5)F(H)B/1170(5)F(H)B WD(M)-1270(5)F(H)B/1370(5)F(H)B ITEM WD(M)-1074(6)F(H)B/1174(6)F(H)B WD(M)-8070F(H)/1070(5)F(H) WD(M)-1274(6)F(H)B/1374(6)F(H)B WD-8078FHB/1078FHB WM-1171(6)FHB WM-1371(6)FHB WD-1271FB POWER SUPPLY 220-240V~, 50Hz 63kg PRODUCT WEIGHT 67kg 150W 190W WASHING SPIN (800rpm) 300W ELECTRICITY DRAIN MOTOR CONSUMPTION WASH HEATER 2000W WASH 45rpm SPIN WD(M)-8070(4)F(H)(B)/WD-8078FHB 400/600/800 rpm REVOLUTION WD(M)-1070(5)F(H)(B)/1074(6))F(H)B/WD-1078FHB 400/600/800/1000 rpm SPEED...

  • Page 4: Features & Technical Explanation

    2. FEATURES & TECHNICAL EXPLANATION 2-1.FEATURES Jumbo drum LG’s jumbo drum can wash about 40% more per load than conventional washing machine. A bigger drum improves the wash performance. More economical by Fuzzy Logic System FUZZY Logic System detects the amount of load and water...

  • Page 5: Water Level Control

    2-2.DETERMINE WASHING TIME BY FUZZY LOGIC To get the best washing performance optimal time is determined by sensing of water temperature, selected washing temperature and laundry amount. water temperature washing time the best selected FUZZY washing washing rinse time temperature LOGIC performance spin rhythm, time...

  • Page 6: Parts Identification

    3. PARTS IDENTIFICATION Power plug If the supply cord is damaged, it must be replaced by the manufacturer or its service Drawer agents or a similarly qualified (For detergent and person in order to avoid a fabric softener) hazard. Control panel Drain hose Door Lower cover...

  • Page 7: Installation

    4. INSTALLATION Before servicing ask the customer what the trouble is. Check the adjustment (power supply is 220-240V, remove the transit bolts..) Check the troubles referring to the troubleshooting. Decide service steps referring to disassembly instructions. Then, service and repair. After servicing, operate the appliance to see whether it works O K or NOT.
  • Page 8 HOW TO CONNECT INLET HOSE Check that the rubber washer is inside of the valve connector. Connect the inlet hose firmly to prevent leak. CONNECT DRAIN HOSE Make sure that the hose is not twisted. Avoid submerging the end of the hose. The drain hose should be placed under 100cm from the floor.

  • Page 9: Test Operation

    TEST OPERATION Preparation for Press the power button. Press the Start/Pause washing. button. Connect the power plug to In case of Coloureds program. the outlet. Connect the inlet hose. Check the water heating. Check automatic reverse Check the water supply. turn.

  • Page 10: Operation

    5. OPERATION Option Rinse hold If you desire to leave fabrics in the machine without spinning after rinse to If you want to elimenate protein prevent them wrinkling, you may select rinse hold by pressing the spin stains(milk, blood, chocolate...), button.

  • Page 11: Led Display

    LED display Wash program selector It displays the remaining time (Hour : Minute ) to 9 programs can be set depending on the type of finish. the laundry. In case of abnormal operation, error indications are By rotating the dial, [ Coloureds Synthetic displayed.

  • Page 12: Wiring Diagram

    6. WIRING DIAGRAM WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB WD-8070F(H), WD-1070(5)F(H) (option) GN/YL...

  • Page 13: Program Chart

    7. PROGRAM CHART Pre Wash : If the laundry is heavily soiled, “Pre Wash” course is effective. Pre Wash is available in Coloureds, Whites and Synthetic Program. Eco : By selecting Eco function, the water temperature is reduced and washing time is lengthened. So you can economize in your consumption of energy.

  • Page 14: Troubleshooting

    8. TROUBLESHOOTING 8-1. BEFORE PERFORMING SERVICE ¡ÆBe careful of electric shock or disconnecting the parts while troubleshooting. ¡ÆVoltage of each terminal in 220-240V~ and DC while applying an electric current. 8-2. QC TEST MODE. ¤ Pressing Spin, and Temp button simultaneously. ¤ŁPower supply ON with pressing upper two button.

  • Page 15: 8-4.Error Display

    8-4. ERROR DISPLAY. If you press the Start/Pause button when an error in displayed, any error except will disappear and the machine will change into pause status. In case of if the error is not resolved within 20 sec. In the case of other errors, if the error is not resolved within 4 min.
  • Page 16 ERROR SYMPTOM CAUSE SENSOR • The electric contact between the connectors ERROR (5-pin, male in the wire harness and 5-pin female in the hall sensor) is bad or unstable. ƒ_ Reconnect or repair the contact in the connector. • The connector (6-pin, male, natural) in the wire harness is not connected to the connector (6-pin, female, natural) of PWB assembly (Main) or the electric contact of connectors is bad/unstable.

  • Page 17: Error Diagnosis And Check List

    9. ERROR DIAGNOSIS AND CHECK LIST 9-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION SYMPTOM GUIDE FOR SERVICE CALL NO POWER Is the power plug connected firmly to 220-240V~ outlet? Power failure? or Breaker opened? is the outlet controlled by a switch Visit to check.
  • Page 18 SYMPTOM GUIDE FOR SERVICE CALL DOOR OPEN ERROR Close the door Did you press the Start/Pause button when Refer to the door is open? 7-4 ERROR DISPLAY Visit to check. Check if the door switch is O.K Drain trouble Is O O E E displayed? Clean up Is the debris filter clogged with foreign the filter.
  • Page 19 SYMPTOM GUIDE FOR SERVICE CALL Suds overflow from the Is low-sudsing detergent for the drum appliance. washing machine used? (In this condition, wash and spin do not operate LOW SUDSING normally) Is the proper amount of detergent used DETERGENT as recommended? Recommend to reduce the amount of detergent.

  • Page 20: Fault Diagnosis And Troubleshooting

    9-2. FAULT DIAGNOSIS AND TROUBLESHOOTING WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB CAUTION 1. Be careful of electric shock or disconnecting the parts while troubleshooting. 2. First of all, check the connection of each part terminal with wiring diagram. 3.
  • Page 21 WD-8070F(H), WD-1070(5)F(H) 1. Be careful of electric shock or disconnecting the parts while troubleshooting. CAUTION 2. First of all, check the connection of each part terminal with wiring diagram. 3. Voltage between each terminal is AC 220-240V while applying an electric current (except secondary part of the transformer and sensors).

  • Page 22: No Water Supply

    NO WATER SUPPLY Is the water supply shut-off? Is the tap opened? Open the tap. Check the chamber (Air) When you press both Option button and Spin and the tube clogged buttons simultaneously, is the water level frequency below 240? with impurity.
  • Page 23 S O F T E N E R D O E S N O T F L O W I N option (HOT) Refer to Is water supplied? ¡ANO WATER SUPPLY¡B Are receptacles correctly connected to the terminals Check the wiring on the of inlet valve? dispenser.

  • Page 24: Heating Without Water

    HEATING WITHOUT WATER WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB,WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB When pressing [Option] and [Spin] at the same time after draining, is the water level frequency 252 or more? Replace the sensor When pressing [Option], [Spin] buttons at the (pressure).
  • Page 25 DRAIN MALFUNCTIONING WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB Repair drain hose. Is the drain hose twisted or frozen? Remove foreign material. Is the impeller of the drain pump clogged? Reconnect or repair the Is the connector disconnected, disassembled? connector.
  • Page 26 WASH HEATER TROUBLE WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB PWB ASSEMBLY (MAIN) When checking the voltage between Replace the PWB connector the PWB assembly (Main) assembly (Main). during whites washing ,Is the voltage 220 - 240V 220 - 240V~ After power off,is the resistance of wire...
  • Page 27 HEATING CONTINUOUSLY ABOVE THE SETTING WATER TEMPERATURE WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB When disconnect the connector (1) on the PWB assembly (Main) is the resistance of the Natural connectors ¡a ¤Ł ( Blue/White, Violet), Replace the thermistor ¤Ø...
  • Page 28 S P I N T R O U B L E WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB Check the sensor Check on the spinning, is the frequency of the (Pressure) or hose water level 248 or more.
  • Page 29 WD-8070F(H), WD-1070(5)F(H) Check the frequency of the Check the sensor water level 48 or more. The frequency can be (Pressure) or hose checked by pressing the Option and Spin (Sensor). buttons at the same time. If the problem is on the sensor or the hose, replace the sensor or the hose.

  • Page 30: Disassembly Instructions

    10. DISASSEMBLY INSTRUCTIONS Be sure to unplug the machine out of the outlet before disassembling and repairing the parts. CONTROL PANEL Unscrew 2 screws on the back of the top plate PLATE ASSEMBLY (TOP) assembly. Pull the top plate backward and upward as shown. Disconnect the PWB assembly (Display) connector.

  • Page 31: Dispenser Assembly

    PWB ASSEMBLY (POWER) WD-8070F(H), WD-1070(5)F(H) Disassemble the top plate assembly. Unscrew 2 screws. Disconnect connector from the wiring. DISPENSER ASSEMBLY Disassemble the top plate assembly. Pull out the drawer to arrow direction. Unscrew 3 screws. DRAWER The hose clamps and the hose are disassembled. The ventilation bellows and the water inlet bellows are disassembled on the tub.

  • Page 32: Inlet Valve

    INLET VALVE Disconnect the wiring receptacle. Unscrew 2 screws from the back. When reconnecting the connector. VALVE #1 (MAIN) Whited/Black-Black VALVE #2 (PRE) Gray/ White - Black VALVE #3 (HOT) Blue/Red - Black [WD(M)-8070F(H)(B)/WD(M)-1070(5)F(H)(B)/WD(M)-1170(5)F(H)B WD(M)-1270(5)F(H)B/WD(M)-1370(5)F(H)B/WD(M)-8074F(H)B WD(M)-1074(6)F(H)B/WD(M)-1174(6)F(H)B/WD(M)-1274(6)F(H)B WD(M)-1374(6)F(H)B/WD-8078FHB/WD-1078FHB/WM-1171(6)FHB PWB ASSEMBLY (MAIN) WM-1371(6)FHB/WD-1271FB] WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B...
  • Page 33 DOOR Open the door completely. Remove the two screws from the hinge. GASKET ASSEMBLY Take apart the cabinet gasket clamp. Unscrew 2 screws from the cabinet cover. Open the lower cover cap and unscrew 1 screw inside. Take apart the lower cover. Unscrew all the screws on the upper and lower sides of the cabinet cover.
  • Page 34 PULLEY, MOTOR, DAMPER (PULLEY) (PULLEY) Remove the back cover. Unscrew the bolt to pull out the pulley. Take off the belt turning the pulley. (MOTOR) (MOTOR) Unscrew 2 screws from the bracket. When reassembling the motor, make sure that motor mounting bushings are not taken off from the Push the motor in the arrow direction for bracket.
  • Page 35 PUMP Remove pump outlet hose. Pump Outlet Hose Remove tub pump bellows. Remove cap (remaining hose.) Disconnect the wiring. Screw Unscrew 3 screws. Remove the pump. (Remaining Hose) Tub Pump Bellows HEATER Unscrew 3 screws fixing the heater protecting cover. Loosen the M6 heater nut to pull out the heater.
  • Page 36 DOOR HINGE ASSEMBLY Disassemble the door from the door hinge. Unscrew 2 screws on the door hinge. Take apart the cabinet cover clamp and release the Push the door hinge arm to the inside of the cabinet gasket. cover for disassembling. SWITCH ASSEMBLY, DOOR LOCK Take apart the cabinet cover clamp and release the Take apart the cabinet cover clamp and release the...

  • Page 37: Exploded View And Part List

    11. EXPLODED VIEW 11-1.THE EXPLODED VIEW OF CABINET ASSEMBLY : Non-service part : Service part A110 A150 A102 A101 A460 A104 A141 A100 A131 A130 A140 A430 A440 A132 A450 A410 A133 A200 A303 A310 A300 A201 A277 A220 HOT(ORANGE) A273 COLD(BLUE) A274...
  • Page 38 WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB : Service Part A110 : Non-Service Part A150 A102 A101 A104 A141 A131 A100 A130 A430 A440 A151 A450 A133 A410 A200 A303 A310 A300 A201 A220 A277 HOT (ORANGE) A273 COLD (BLUE) A274...

  • Page 39: The Exploded View Of Control Panel & Dispenser Assembly

    11-2 THE EXPLODED VIEW OF CONTROL PANEL & DISPENSER ASSEMBLY F170 : Non-service part : Service part F160 F300 F310 F430 F220 F120 F110 F130 F210...

  • Page 40: The Exploded View Of Drum & Tub Assembly

    11-3 THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY : Non-service part : Service part K131 K101 K102 K121 K221 K136 K135 K411 K125 K103 K420 K110 K210 K142 K122 K141 K220 K105 K140 K104 K100 K530 K510 K410 K150 F140 K331 K320...
  • Page 41 WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB F140 K330...

  • Page 42: Ƒrappendix (Replacement Parts List)

    JUN. 2002 PRINTED IN KOREA P/No.:3828ER3008E...

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