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LG GCWM1069CS7 Service Manual

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WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL : GCWM1069CS7
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless
you have obtained the prior written consent of the LG Electronics entity from which you received this Service
Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this
Service Manual.
Copyright © 2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
GCWM1069CD7
GCWM1069QS7
GCWM1069QD7
CONFIDENTIAL

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Summary of Contents for LG GCWM1069CS7

  • Page 1 Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.

  • Page 2: Table Of Contents

    CONTENTS 1. IMPORTANT SAFETY INSTRUCTIONS .................. 3 2. SPECIFICATIONS ........................4 3. FEATURES AND TECHNICAL EXPLANATION ..............5~6 4. PARTS IDENTIFICATION ......................7 5. INSTALLATION INSTRUCTIONS ..................8~14 6. OPERATION ........................15~17 7. WIRING DIAGRAM/PROGRAM CHART/PCB LAYOUT ..........18~20 8. TROUBLESHOOTING ...................... 21~24 8-1.

  • Page 3: Important Safety Instructions

    1. IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USE WARNING For your safety, the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, injury to persons, or death. IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of fire, electric shock, or injury to persons when using the washer, follow...

  • Page 4: Specifications

    70 cm (W) X 77cm (D) X 98.3 cm (H), 139.6 cm (D with open) DOOR SWITCH TYPE PTC + Solenoid WATER LEVEL 10 steps (by sensor) LAUNDRY LOAD SENSING Incorporated ERROR DIAGNOSIS Incorporated LG Landry Lounge (Web site) Wi-Fi LG Laundry Lounge Installer (App) LG Laundry Lounge (End-User App)

  • Page 5: Features And Technical Explanation

    LG Laundry Lounge Apps - LG Laundry Lounge Installer : This is a registration app for installers used to register the product on the server. Only available for authorized users. *Search for LG Laundry Lounge Installer in Google Play Store or Apple App Store.

  • Page 7: Parts Identification

    4. PARTS IDENTIFICATION Shipping Bolts (4) Power Plug If the supply cord is damaged, · it must be replaced by the manufacturer or an authorized service technician in order t avoid a hazard. Control Panel Drain Hose Dispenser (for single model) Dispenser Drum (for stack model)

  • Page 8: Installation Instructions

    5. INSTALLATION INSTRUCTIONS WARNING • Washer is heavy. Two or more people may be needed to install and move the appliance. Failure to do so can result in back or other injury. • Store and install the washer where it will not be exposed to temperatures below freezing or exposed to outdoor weather conditions.
  • Page 9 Minimum installation spacing for   Installation clearances recessed area installation. The location must be large enough to open the washer door completely.  Washer dimensions 52" 139.6 cm 52" 139.6 cm 52" 139.6 cm 30 1/4" 77 cm 30 1/4" 77 cm 30 1/4"...
  • Page 10  Installation of Auto dosing system Detergent Input period Pre-wash Pre - wash phase Main wash Main wash phase Main wash (Remaining w Bleach ashing me: 5 Minutes) So ener Final rinse phase  Auto dosing interface Auto dosing interface Wire Color Black: Jump wire (- signal) Red: Main Wash (+ signal)
  • Page 11 INSTALL THE APPLIANCE ON A FLAT AND FIRM SURFACE NOTE: A firm, solid floor is even more critical to a Level floor front-loading washer than to a top-loader. • Allowable slope under entire washer is 1°. If your floor is wood and/or frame •...
  • Page 12  Level adjustment • Leveling the washing machine properly prevents excessive noise and vibration. Install the appliance on a solid and level floor surface, preferably in a corner of the room. • If the floor is uneven, adjust the adjustable feet as required.
  • Page 13 Electrical connection · Do not use an extension cord or double adapter. · If the supply cord is damaged, it must be replaced by a qualified person in order to avoid a hazard. · If the machine will not be used for an extended time, unplug it, shut off the water supply and open the door to provide ventilation.
  • Page 14 about 70"(1.8m)  Installation of drain hose about 78"(2.0m) about 55"(1.4m) about 55"(1.4m) about 55"(1.4m) about 45"(1.1m) about 45"(1.1m) about 45"(1.1m) about 45"(1.1m) about 70"(1.8m) about 70"(1.8m) • When installing the drain hose at a sink, secure it so it •...

  • Page 15: Operation

    6. OPERATION CONTROL PANEL FEATURES Coin type (GCWM1069QS7) Coin type (GCWM1069QD7) Card / OPL Type (GCWM1069CS7/GCWM1069CD7) 1. Display LED 4. Start/Pause button 2. Cycle button 5. Status LED 3. Optional function button...
  • Page 16 Status LED Display LED Cycle button Start/Pause button Optional function button Display LED Optional function button Add Super Wash: Wash time or rinse cycle can The display shows the vend price and remaining time and programming options. Error be added when additional coin is inserted or a valid cash card is entered.
  • Page 17 Select cycles designed for different types of fabric and soil levels Wash / Rinse CYCLE Fabric Type Temp. Cotton, Linon, Towels, Shirts, Sheets Hot/Cold Warm Mixed Loads, Work Clothes, Jeans, Shirts Warm/Cold Dress Shirts/Pants, Wrinkle Free Clothing, Cold Cold/Cold Poly/Cotton Blend Clothing, Tablecloths. Dress Shirts/Blouses, Nylons, Sheer or Lacy Delicates Cold/Cold...

  • Page 18: Wiring Diagram/Program Chart/Pcb Layout

    7. WIRING DIAGRAM/PROGRAM CHART/PCB LAYOUT Wiring Diagram Single type : GCWM1069CS7 GCWM1069QS7 MAIN PWB SUB PCB EXTERNAL FUSE ATOMI MAIN BLEACH SLOT -ZING CENTRAL CON1 LOCK SLOT AUTO DOSING INLET VALVE SENSOR COIN DROP VCC PAYMENT SYSTEM NOISE VIBRATION FILTER...
  • Page 19 Program Chart PREWASH (A+B+C) WASH (D+E) RINSE ((G+H+I+J+K+L)*n) SPIN (M+N+O+P) (O) Disenta Water Tumble Intermitten Wave F Tumble Drai Intermittent Tumble Drain Water Supply Drain Spin Water Supply Spin ngle Supply (CCCC - D + Super Wash) t Spin orce (rt-G-H-J) Spin Default W...
  • Page 20 PCB Layout (Main) P/N : EBR86778404...

  • Page 21: Troubleshooting

    8. TROUBLESHOOTING 8-1. BEFORE PERFORMING SERVICE Be careful of electric shock when disconnecting parts while troubleshooting. The voltage of each terminal is 120V- when the unit is plugged in. 8-2. QC TEST MODE. The washer must be empty. <Control Panel Button> How to enter Programming mode: Coin type –...

  • Page 22: Error Display

    8-5. ERROR DISPLAY · If you press the START button when an error is displayed, any error except will disappear and the machine will go into the pause status. ERROR SYMPTOM CAUSE • Correct water level (246) is not reached within 10 minutes WATER INLET after water is supplied or it does not reach the preset water ERROR...
  • Page 23 The connector (3-pin, male, blue) in the MOTOR HARNESS is not connected to the connector (3-pin, female, white) of STATOR ASSEMBLY. LOCKED The electric contact between the MOTOR HARNESS MOTOR and the MAIN PWB ASSEMBLY is bad or unstable. The MOTOR HARNESS between the STATOR ERROR ASSEMBLY and MAIN PWB ASSEMBLY is cut (open circuit).

  • Page 24: Dispenser

    8-6. DISPENSER The dispenser drawer is a multi-chambered reservoir that allows the user to add all the appropriate laundry additives before starting the cycle. It has a place for pre-wash and Main wash detergent, fabric softener, and bleach. Powdered or liquid detergents may be used, but softener and bleach must be liquids.

  • Page 25: Diagnosis And Troubleshooting

    . DIAGNOSIS AND TROUBLESHOOTING WARNING 1. Be careful of electric shock if disconnecting parts while troubleshooting. 2. First, check the connection of each electrical terminal with the wiring diagram. 3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly. NO POWER Check the fuse or reset Is the supplied voltage 120V~, 60Hz?
  • Page 26 1. NO POWER 1.Check Electric Wiring. 2.Check the customer's outlet. 3.Check Noise Filter. 4.Che ck LED on in Main PWB 5.Check External Fuse (Single Harness).
  • Page 27 DC 13V...
  • Page 28 Symptom Check Point 1. INLET VALVE ERROR 1.Check Electric Wiring. 2.Check Inlet valveís Resistance. 3.Check Inlet valve clogged. 4. Voltage of the inlet valveís connector. -. Valve running : 13~15Vdc Resistance Inlet Valve Main PWB [k ] RD6 2 0.8 ~ 1.2 RD6 6 (1) ~ (2) Main...
  • Page 29 OE ERROR (DRAIN TROUBLE) Repair the DRAIN HOSE Is the drain hose twisted or frozen? ASSEMBLY. Reconnect or repair the Is the connector disconnected or disassembled? connector Replace the DRAIN Is the coil of the drain pump too high or low? PUMP ASSEMBLY.
  • Page 30 Symptom Check Point 1. Drain Error (OE) 1.Check Electric Wiring. 2.Check drain pump Resistance. 3.Check drain line clogged.
  • Page 32 1. PRESSURE 1.Check Electric Wiring. SENSOR ERROR (PE) 2.Check Pressure sensor's Resistance. 3.Check Air chamber and Tube clogged. Pressure Sensor Resistance Pressure Main Sensor 21 ~ 23 NA2 5 (1) ~ (3) NA2 7 10%)
  • Page 33 dE1/dE2 dE1/dE2 (Black 2 pin ①, Yellow 4 pin ②)
  • Page 34 Symptom Check Point 1. DOOR OPEN 1.Check Electric Wiring. ERROR (dE) 2.Check latch hook spring. (Cracked) 3.Check Door switch's Resistance. 4.Check Voltage of Door switch's connector. Door switch Door switch Result Remarks Result Remarks (Type1) (Type2) (2) ~ (4) 700~1500 At 77 (25 ) (2) ~ (4)
  • Page 35 VIBRATION & NOISE IN SPIN...
  • Page 36 DETERGENT/SOFTENER/BLEACH DOES NOT FLOW IN Refer to previous page Is water supplied? IE ERROR Are the plugs correctly connected to the terminals Check the wiring. of the INLET VALVE ASSEMBLY? -Single model- Put it in the correct compartment Is detergent/softener/bleach put in the correc t -Single model- compartment of the DRAWER? Bleach...
  • Page 37 SUDS OVERFLOW FROM THE APPLIANCE Is HE(High Efficiency) detergent used ? Is the proper amount of detergent used as recommended? Recommend to reduce the amount of detergent. This appliance has an automatic suds sensing function which prevents overflow. When excessive suds are sensed, the suds removing implementations such as drain, water input, and pause will operate, without rotating the drum WATER OVERFLOW FROM THE DRAWER OR DISPENSER...
  • Page 38 Packing Material Removal Checkpoint. Has the packing material been removed? Make sure the tub support and all four shipping bolts have been removed. This packing material helps to support the outer tub during transit, so that it does not shift. If not removed, the inner drum will turn, but the outer tub will not be able to shift as needed.
  • Page 39 One is ‘rubber + plastic’ and the other is ‘metal’. All parts must be removed from the washer!! rubber + plas c metal You can separate power cord from the washer a er removing shipping bolts. Leveling If the unit is not leveled properly, it will vibrate. Is the unit leveled? Many vibra on issues are the result of the unit not being leveled properly.
  • Page 40 Adjusting legs Perform the diagonal test Adjust Legs for leveling Perform the load test in Rinse+Spin 1. A empt to rock the unit from corner to corner. If the unit is not level, use the wrench 1. Put about 2~3kg (4~6lb) clothes in the drum a er 2.
  • Page 41 Adjusting legs Do not place items under the feet to fill a gap between the foot of the unit and the floor. This will not resolve the issue and may make it worse. Foreign objects beneath Drip pans can cause the unit to slip in the pan and the pan to slip on the floor. the feet? Use rubber cup for reducing the gap and adjust legs for leveling.
  • Page 42 Unblance(load) If the vibra ons do not happen on every load, the load type or size is likely causing an unbalanced load. This happens if the weight is not evenly distributed across the drum How o en does this occur? surface, causing vibra ons.

  • Page 43: Smart Functions

    Android : Product will automatically pair with the App. Skip to the next step. 1) LG Laundry Lounge Installer(App) : This is a b) iOS : Turn on Wi-Fi settings, then connect registration app for installers used to register to the product’s network (shown below),...
  • Page 44 LG Electronics will also provide open source code Any changes or modifications in construction of to you on CD-ROM for a charge covering the cost this device which are not expressly approved by...

  • Page 45: Disassembly Instructions

    11. DISASSEMBLY INSTRUCTIONS 1. Unscrew 2 screws 2. Disassemble the CONTROL PANEL ASSEMBLY - Pull out the CONTROL PANEL . Do not pull out the CONTROL PANEL too forcefully as it can be broken. 3. Disconnect the DISPLAY PWB ASSEMBLY connector from CABLE (HARNESS).
  • Page 46 WARNING TOP PLATE ASSEMBLY • When you disassemble the top plate, be sure to take gloves and careful plate’s edge. Failure to do so can cause serious injury. -Stack model- -Single model- 1. Disassemble the LID OUT 1. Pull out the DRAWER ASSEMBLY 2.
  • Page 47 1. Disassemble the CONTROL PANEL ASSEMB LY (Refer to page 38) 2. Disassemble the TOP PLATE ASSEMBLY (Refer to previous page) 3. Unscrew a screw on PRESSURE SWITCH ASSEMBLY 4. Remove all wire from hooks. 5. Detach fuse from Protective Cover. (fit fuse into holder on Cover when reassembling) 6.
  • Page 48 -Single model- 1. Disassemble the CONTROL PANEL ASSE MBLY DISPENSER ASSEMB LY Clamp (Refer to page 38) 2. Disassemble the TOP PLATE ASSEMB LY (Refer to page 39) 3. Disassemble he clamps and hoses. 4. Disassemble the bellows at the lower side of DISPENSER -Stack model- DISPENSER ASSEMBLY Clamp...
  • Page 49 1. Disassemble the CONTROL PANEL ASSE MBLY (Refer to page 38) 2. Open the DOOR. 3. Disassemble the CLAMPASSEMB LY. 4. Unscrew the 4 screws from the CABINET COVER. 5. Unscrew the screw from CAP COVER. 6. Unscrew the screw from inside CAP COVER. CAP COVER 7.
  • Page 50 8. Unscrew the screw from the lower side of the CABINET COVER . 9. Tilt the CABINET COVER. 10. Disconnect the DOOR S/W connector. NOTE: When assembling the CABINET COVER, connect the connector. 11. Lift and separate the CABINET COVER. 1.
  • Page 51 1. Open the DOOR. 2. Unscrew the 7 screws from the HINGE COVER. 3. Put a flat ( - ) screwdriver into the openng of the hinge, and HINGE COVER pull out the HINGE COVER. 4. Unscrew a screw from the lower side of DOOR. 5.
  • Page 52 HEATER CAUTION...
  • Page 53 MOTOR ASSEMBLY 1. Disassemble the BACK COVER. 2. Remove the bolt. 3. Pull out the ROTOR. ROTOR 4. Unscrew a screw from the bracket. 5. Remove the 6 bolts on the stator. 6. Unplug the connector from the STATOR. DAMPER 1.

  • Page 54: Exploded View

    12. EXPLODED VIEW 12-1. CABINET& CONTROL PANEL ASSEMBLY A480 M410 F214 A485 GCWM1069QD7 F210 F110 A450 A390 A455 GCWM1069QS7 A117 A110 GCWM1069CS7 A410 GCWM1069CD7 A150 A154 A152 A107 A156 A141 A101 A153 A151 A131 A100 A130 A430 A140 A133 A440...

  • Page 55: Cabinet & Control Panel Assembly - Card Type

    12-1-2. CABINET& CONTROL PANEL ASSEMBLY...

  • Page 56: Drum & Tub Assembly

    12-2. DRUM & TUB ASSEMBLY K150 K143 K361 K350 K123 K360 F140 K610 K411 K410 K611 K115 K141 K110 K117 K111 F315 K140 F310 F465 K571 K142 K190 F463 K572 F464 K122 K516 K125 K570 K130 K320 K530 K121 K510 K512 F360 K135...

  • Page 57: Dispenser Assembly (For Single Model)

    12-3. DISPENSER ASSEMBLY (FOR SINGLE MODEL) F327 F324 F300 F326 F462 M506 M500 F170 F160 F323 M505 A160 F329 A161 F430 A162 F441 F301 F120 F121 HOT(RED) & COLD(BLUE) A275 F122 F130 F432...
  • Page 58 MFL68921865...

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