1. Manuals
  2. Brands
  3. LG Manuals
  4. Washer
  5. WM2688H*M
  6. Training manual

LG WM2688H*M Training Manual

Discovery washer
Hide thumbs Also See for WM2688H*M:
Table of Contents

Advertisement

Quick Links

See also: Service Manual , Owner's Manual
DISCOVERY WASHER
TRAINING MANUAL
CAUTION!
READ THIS MANUAL CAREFULLY
BEFORE DIAGNOSING OR SERVICING THIS PRODUCT.
www.LGEservice.com

Advertisement

Table of Contents
loading

Related Manuals for LG WM2688H*M

Summary of Contents for LG WM2688H*M

  • Page 1: Safety Notices And Warnings

    www.LGEservice.com DISCOVERY WASHER TRAINING MANUAL CAUTION! READ THIS MANUAL CAREFULLY BEFORE DIAGNOSING OR SERVICING THIS PRODUCT.

  • Page 2: Contents

    Customer Service (and Part Sales) (800) 243-0000 Technical Support (and Part Sales) (800) 847-7597 USA Website us.lgservice.com Customer Service Website us.lgservice.com B2B Service Website biz.lgservice.com LG CS Academy lgcsacademy.com Published March 2006 by LG Technical Support and Training...
  • Page 3 LG Electronics. Unauthorized modifications will not only void the warranty, but may lead to property damage or user injury. If wires, screws, clips, straps, nuts, or washers used to complete a ground path are removed for service, they must be returned to their original positions and properly fastened.

  • Page 4: Table Of Contents

    WM2688H*M Steam Washer WM2688H*M (Discovery Steam Washer) Contact Information Safety Notices and Warnings Contents Introduction Specifications Features Serial Number Identification Fuzzy Logic Door Lock Door Locked Lamp Water Circulation Parts Identification (Callout) Accessories Remote Monitor and Modem Installation Connections Control Panel...
  • Page 5 WM2688H*M Steam Washer Fault Diagnosis and Troubleshooting (Continued) Drain Malfunction Wash Heater Trouble Heating Continuously Above The Set Temperature Will not Circulate Water Spin Trouble dE Error Code Disassembly and Repair Block Wiring Diagram Control Panel Main Board Dispenser Noise Filter...

  • Page 6: Introduction

    WM2688H*M Steam Washer INTRODUCTION The DISCOVERY series of washers and dryers is the top of the line and includes every option and feature. Most notable are the steam generator and the LCD display. SPECIFICATIONS WM2688H*M Page 6 of 64 TRAINING MANUAL...

  • Page 7: Features

    WM2688H*M Steam Washer FEATURES LARGE CAPACITY The larger drum (4.0 cu. ft.) allows washing of larger (heavier) loads and oversized items (comforters, curtains, blankets, etc.) There is less wrinkling and tangling of the laundry. DIRECT DRIVE The brushless DC motor drives the drum directly without belts, pulleys, or transmissions.
  • Page 8 WM2688H*M Steam Washer FEATURES, continued BUILT-IN HEATER The internal heater helps maintain the water at its optimal temperature for selected cycles. The SANITARY cycle kills most common germs and bacteria. CHILD LOCK This allows the user to lock the controls. Children then cannot play with the buttons and disturb the wash cycle.

  • Page 9: Serial Number Identification

    WM2688H*M Steam Washer SERIAL NUMBER IDENTIFICATION The serial number is unique to each product. It gives information concerning the time and place of manufacture. The serial number is required to be paid for warranty service and to get the correct part in the event a running production change was made.

  • Page 10: Fuzzy Logic

    WM2688H*M Steam Washer FUZZY LOGIC To get the best washing performance, the user selects one of the standard cycles. Sensors in the COMBO make an infinitely variable number of adjustments as the cycle progresses. Adjustments are automatically made for load size, incoming water temperature, soil level, rinses required, and other variables.

  • Page 11: Water Circulation

    WM2688H*M Steam Washer WATER CIRCULATION The recirculation pump circulates the water during most of the cycle. During the WASH cycle, it runs continuously for the first 3 minutes and then intermittently throughout the cycle. During the RINSE cycle, it runs continuously as soon as the appropriate amount of rinse water has been added.

  • Page 12: Parts Identification (Callout)

    WM2688H*M Steam Washer PARTS IDENTIFICATION (Front of Washer) WM2688H*M Page 12 of 64 TRAINING MANUAL...

  • Page 13: Accessories

    WM2688H*M Steam Washer The air vent on the back of the machine must be left open and clear at all times. If the washer is installed in a closet or closed laundry alcove, there must be sufficient clearance and ventilation. The closet should have a full louvered door with at least 800 square inches (0.5 m...

  • Page 14: Remote Monitor And Modem

    WM2688H*M Steam Washer REMOTE MONITOR and MODEM The remote laundry monitor (RLM) allows the user to monitor the progress of both washer and dryer, provided they are quipped with a modem. Remove the cover and install the modem on the back of the washer.

  • Page 15: Installation

    WM2688H*M Steam Washer INSTALLATION REMOVE THE SHIPPING BOLTS. INSTALL THE WASHER ON A FIRM, FLAT SURFACE. ADJUST THE FEET TO BE LEVEL. WM2688H*M Page 15 of 64 TRAINING MANUAL...

  • Page 16: Connections

    WM2688H*M Steam Washer CONNECTIONS WATER Be sure the rubber washer is inside the hose end. Attach the hoses to the washer (red is HOT, blue is COLD). Tighten them firmly but don’t strip the plastic threads on the washer connections.

  • Page 17: Control Panel

    WM2688H*M Steam Washer CONTROL PANEL The control panel is locates on the front of the Steam Washer. All options are available from the control panel. WM2688H*M Page 17 of 64 TRAINING MANUAL...

  • Page 18: Option Buttons

    WM2688H*M Steam Washer OPTION BUTTONS PRE-WASH Press to add a pre-wash cycle. * Child Lock (Press and hold to select or deselect the Child Lock function) RINSE+SPIN Press after power-up without selecting *Drum Light a cycle to rinse and spin ONLY,...

  • Page 19: Program Chart

    WM2688H*M Steam Washer PROGRAM CHART This chart shows the components and their times of operation in the various wash cycles. The time estimates shown here are for the basic cycles before the fuzzy logic adjustments are made. BEFORE PERFORMING SERVICE •...

  • Page 20: Detergent Dispenser

    WM2688H*M Steam Washer 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 detergent, main wash detergent, fabric softener, and bleach. Powdered or liquid detergents may be used, but softener and bleach must be liquids.
  • Page 21 WM2688H*M Steam Washer The dispenser works by using various solenoids to apply water to different compartments. The liquid products are dispensed from a siphon box. As the appropriate chamber is flooded, the box fills and the water flushes the laundry product into the tub.

  • Page 22: Direct Drive Dc Motor

    WM2688H*M Steam Washer DIRECT DRIVE MOTOR The motor is a direct-drive, brushless, DC motor. It is attached to the drum via a splined shaft, eliminating belts, pulleys, transmissions, and the inherent problems associated with them. The rotor is attached to the shaft by one large bolt.

  • Page 23: Hall Effect Sensor

    WM2688H*M Steam Washer HALL EFFECT SENSOR The Hall Effect sensor is easily removed and replaced. You’ll have to remove the rotor and stator to access the sensor. When replacing the rotor, you’ll probably need a helper to hold the drum in place when you push the rotor onto the shaft.

  • Page 24: Test Mode And Chart

    WM2688H*M Steam Washer TEST MODE The steam washer must be empty and off to enter the test mode. 1. Press and hold SPIN SPEED and SOIL LEVEL. 2. Press POWER. 3. Press START/PAUSE to cycle through the test modes. (See chart.)

  • Page 25: Error Display

    WM2688H*M Steam Washer ERROR DISPLAY continued on next page WM2688H*M Page 25 of 64 TRAINING MANUAL...
  • Page 26 WM2688H*M Steam Washer WM2688H*M Page 26 of 64 TRAINING MANUAL...

  • Page 27: Diagnosis And Check List (Abnormal Operation)

    WM2688H*M Steam Washer DIAGNOSIS and CHECK LIST (Abnormal Operation) WM2688H*M Page 27 of 64 TRAINING MANUAL...

  • Page 28: Diagnosis And Check List

    WM2688H*M Steam Washer DIAGNOSIS and CHECK LIST (Abnormal Operation, continued) WM2688H*M Page 28 of 64 TRAINING MANUAL...
  • Page 29 WM2688H*M Steam Washer DIAGNOSIS and CHECK LIST (Abnormal Operation, continued) WM2688H*M Page 29 of 64 TRAINING MANUAL...

  • Page 30: Fault Diagnosis And Troubleshooting

    WM2688H*M Steam Washer FAULT DIAGNOSIS and TROUBLESHOOTING WM2688H*M Page 30 of 64 TRAINING MANUAL...

  • Page 31: Vibration And Spin Noise

    WM2688H*M Steam Washer DIAGNOSIS/TROUBLESHOOOTING (continued) WM2688H*M Page 31 of 64 TRAINING MANUAL...

  • Page 32: No Water Supply

    WM2688H*M Steam Washer DIAGNOSIS/TROUBLESHOOOTING (continued) WM2688H*M Page 32 of 64 TRAINING MANUAL...

  • Page 33: Liquid Detergent Does Not Flow In

    WM2688H*M Steam Washer DIAGNOSIS/TROUBLESHOOOTING (continued) WM2688H*M Page 33 of 64 TRAINING MANUAL...

  • Page 34: Heating Without Water

    WM2688H*M Steam Washer DIAGNOSIS/TROUBLESHOOOTING (continued) WM2688H*M Page 34 of 64 TRAINING MANUAL...

  • Page 35: Wash Heater Trouble

    WM2688H*M Steam Washer DIAGNOSIS/TROUBLESHOOOTING (continued) WM2688H*M Page 35 of 64 TRAINING MANUAL...

  • Page 36: Will Not Circulate Water

    WM2688H*M Steam Washer DIAGNOSIS/TROUBLESHOOOTING (continued) WM2688H*M Page 36 of 64 TRAINING MANUAL...

  • Page 37: Spin Trouble

    WM2688H*M Steam Washer DIAGNOSIS/TROUBLESHOOOTING (continued) WM2688H*M Page 37 of 64 TRAINING MANUAL...

  • Page 38: Disassembly And Repair

    WM2688H*M Steam Washer DISASSEMBLY and REPAIR The following pages will show the instructions for disassembly, repair, replacement of parts, and re-assembly. Many times, electrical components may be tested by connecting the appropriate meter to the leads or connectors on the main PC Board.

  • Page 39: Control Panel

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Control Panel) Remove two screws on the back of the top plate. Pull the top plate backward and lift, as shown. Remove the detergent drawer. Remove two screws behind the detergent drawer. Disconnect the connector for the Display PWB.

  • Page 40: Main Board

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Main Board) Often, you can diagnose a failed part by removing its connector on the main board and connecting the tester to the leads in the connector. (See page 54.) Disconnect the POWER connector and the Water Level Sensor Switch.

  • Page 41: Dispenser

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Dispenser) Remove the top plate. (See page 39.) Remove the dispenser drawer. Remove two screws to release the dispenser. Loosen the clamp on the large hose that runs from the dispenser to the drum. Have an old towel handy to stuff under the dispenser to soak up any spillage.

  • Page 42: Front Cabinet Cover

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Front Cabinet Cover) Remove the top plate. (See page 39.) Remove the control panel. (See page 39.) Remove four screws that secure the front panel. Remove the screw that secures the filter cover. Use a flat screwdriver or a putty knife to loosen the filter cover and pull it out.
  • Page 43 PRODUCT PARTS LIST DISASSEMBLY/REPAIR (Front Cabinet Cover, continued) Open the door. Remove the clamp using special tool 383EER4001A. Lean the cabinet front forward, being careful to avoid breaking the glass. The door is HEAVY. Disconnect the door switch connector. (Remember to replace it upon reassembly.) Lift the door and front cover off the cabinet base as an...

  • Page 44: Door

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Door) Removing the door with the front cover still on the machine. Open the door. Remove seven screws from the hinge cover. Pry off the hinge cover with a flat screwdriver. Remove the screw at the bottom of the hinge.

  • Page 45: Pump

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Pump) Remove the front cabinet. (See page 39.) Drain the water from the sump. (See page 42.) Remove the clamps and hoses. Remove two screws and push the pump backward and up. Press down the plastic tab on the base to slide the pump assembly backward.

  • Page 46: Heater

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Heater) Remove the front cabinet. (See page 39.) Drain the water from the sump. (See page 42.) Remove the push-on connectors from the heater. Remove the nut that holds the ground wire. Then loosen but do not remove the nut that secures the heater clamp and pull the heater out.

  • Page 47: Foreign Object Between Drum And Tub

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Object between tub and drum) Remove the top cover. (See page 39.) Remove the front cabinet cover. (See page 39.) Remove the heater. (See page 46.) Fish out the foreign object(s) using a wire or bar.

  • Page 48: Motor

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Motor) For technical information concerning the direct drive DC motor, refer to page 22.) Remove the back cover. Remove the large bolt in the center shaft. (Your helper can hold the inside of the drum.) Pull the rotor off the shaft.

  • Page 49: Tub And Drum

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Tub and Drum) Removing the tub/drum assembly is major surgery. It is much lighter if you remove the weights and the motor. Generally speaking, you’ll have to remove all that anyway. Remove the motor. (See page 48.) Drain the water from the sump.

  • Page 50: Damper

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Damper) Disconnect the dampers from the tub and the base. (See photos, left.) Be sure to press in the safety tab before pushing the pin out of the damper. You can use a socket to hold the tab in while you squeeze the pin with the special tool 383EER4003A.

  • Page 51: Turbo Steam Generator (Tsg)

    WM2688H*M Steam Washer DISASSEMBLY/REPAIR (Turbo Steam Generator) The TSG (Turbo Steam Generator) is supplied as an assembly only; parts like the sensor, thermistor, or heater cannot be replaced individually. Diagnosis is limited to determining malfunction and replacing as an assembly. The steam generator does not have to be removed from the machine to be drained.
  • Page 52 WM2688H*M Steam Washer When the TSG is installed in the washer, the hoses to the dispenser should fit into the tubing guides. Be particularly careful when removing and replacing the water input hose to the steam generator. There is a check valve that fits into the input port.

  • Page 53: Tips And Tricks

    WM2688H*M Steam Washer TIPS and TRICKS HOSES When replacing the large hoses, be sure to avoid getting the lip turned under the hose clamp. This will damage the hose and cause a leak. The large hoses have notches on the ends to index them on the connectors.

  • Page 54: Exploded Views

    WM2688H*M Steam Washer MAIN BOARD The connector colors and functions are listed below as a guide. Remember, sometimes there may be a running production change. Refer to the wiring diagram. (NA = natural or cream, SB = sky blue, BL = blue, BK = black)

  • Page 55: Wiring Diagram

    WM2688H*M Steam Washer WIRING DIAGRAM WM2688H*M Page 55 of 64 TRAINING MANUAL...

  • Page 56: Exploded View (Cabinet And Control Panel)

    WM2688H*M Steam Washer EXPLODED VIEW – Cabinet and Control Panel WM2688H*M Page 56 of 64 TRAINING MANUAL...

  • Page 57: Exploded View (Drum And Tub)

    WM2688H*M Steam Washer EXPLODED VIEW – Drum and Tub Assembly WM2688H*M Page 57 of 64 TRAINING MANUAL...
  • Page 58 WM2688H*M Steam Washer EXPLODED VIEW – Dispenser Assembly WM2688H*M Page 58 of 64 TRAINING MANUAL...

  • Page 59: Parts List

    WM2688H*M Steam Washer PARTS LIST Loc # Part No Description 3829ER3041A Owner’s Manual 3890EZ3612A Outer Box 3W20018B Wrench 3828ER3048Q Service Manual A100 3091ER0004P Cabinet Assembly A101 3550ER1028A Rear Cover A102 4830ER3001A Bushing A102 4830ER3001A Bushing A103 4930ER3014A Holder A104 4011FR3159E...

  • Page 60: Training Manual

    WM2688H*M Steam Washer Loc # Part No Description A455 3550ER1032A Main PCB Cover A485 6201EC1006B Line Noise Filter F110 6871ER2020B Display PCB F120 6877ER1044C Display Wiring Harness F130 6850ER2002B Flat Cable F140 6877ER1016F Wiring Harness F145 6877ER3003B Wiring Harness F160...
  • Page 61 WM2688H*M Steam Washer Loc # Part No Description F560 Hose K105 3045ER0048B Outer Tub Assembly (Rear Half) K110 3045ER1017A Drum Assembly K111 4433ER1005A Baffle/Roller Assembly K115 4434ER0001A Spider (Drive Assembly) K121 4280FR4048N Ball Bearing K122 4280FR4048J Ball Bearing K123 4040FR4051C...

  • Page 62: Wm2688H*M

    WM2688H*M Steam Washer K540 3504ER3002A Air Chamber K550 5214FR4125N Inlet Hose K610 383EER3001J Damper Assembly K611 4433ER0001A Damper Pin M400 Turbo Steam Generator M410 3210ER1318A Support Rail 383EER4001A GASKET PLIER (SPECIAL TOOL) 383EER4003A DAMPER PLIER (SPECIAL TOOL) 383EER4004A GASKET PLIER (SPECIAL TOOL)
  • Page 63 (this page intentionally blank)
  • Page 64 © 2006 LG Electronics, Inc. Printed in the USA...

Table of Contents