Page 1 PRODUCT T RAINING WM2688H*M Discovery Steam Washer WM2688H*M Steam Washer Training...
Page 2: Contact Information
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 WM2688H*M Steam Washer Training T- 2...
Page 3: Preliminary Matters (The Fine Print)
When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Electronics. Unauthorized modifications will not only void the warranty, but may lead to property damage or user injury.
Page 4 Also be aware that many household appliances present a weight hazard. At least two people should be involved in the installation or servicing of such devices. Failure to consider the weight of an appliance could result in physical injury. WM2688H*M Steam Washer Training T- 3...
Page 5 Handle the electronic control assembly by its edges only. When repackaging a failed electronic control assembly in an anti-static bag, observe these same precautions. WM2688H*M Steam Washer Training T- 3...
Page 6 Connect the equipment to an outlet on a different circuit than that to which the receiver is connected; or consult the dealer or an experienced radio/TV technician for help. WM2688H*M Steam Washer Training T- 3...
Page 7 Preliminary Matters (The Fine Print) COMPLIANCE The responsible party for this device’s compliance is: LG Electronics Alabama, Inc. 201 James Record Road, Huntsville, AL, 35824. WM2688H*M Steam Washer Training T- 3...
Page 8 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. WM2688H*M Steam Washer Training T- 6...
Page 9: Specifications
Specifications WM2688H*M Steam Washer Training T- 6...
Page 10 The maximum spin speed of 1,320 RPM extracts more water from the laundry, reducing drying times. TILTED DRUM/LARGE DOOR The tilted drum (10°) and large door opening allow easier loading and unloading. WM2688H*M Steam Washer Training T- 7...
Page 11 AUTOMATIC LOAD DETECTION The microprocessor reads the current required to turn the drum and determines the weight of the load. This input is used to make numerous decisions during the wash cycle. WM2688H*M Steam Washer Training T- 7...
Page 12 REMOTE LAUNDRY MONITOR Available separately, the remote monitor displays the cycle and remaining time of the washer and dryer. It can be plugged in to any outlet in the house. WM2688H*M Steam Washer Training T- 8...
Page 13 Features (continued) LCD Display The bright display replaces numerous LEDs and shows instructions when the controls are set. WM2688H*M Steam Washer Training...
Page 14: Serial Number Identification
Some models may have four (4) letters instead of two (2) for the product code number. The third and fourth letters are significant only to the manufacturing facility. WM2688H*M Steam Washer Training T- 9...
Page 15: 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. WM2688H*M Steam Washer Training T- 10...
Page 16: Door Lock
•When the COMBO is operating •When the power failed or the washer is unplugged (until the capacitor discharges and releases the lock) •When the DOOR LOCK light is on •When the drum is still turning WM2688H*M Steam Washer Training T- 10...
Page 17: Door Locked Lamp
The DOOR LOCK lamp lights: • When the COMBO is operating • When the water level sensor frequency is lower than 22.9 kHz • When the temperature inside the tub is over 45° C (113°F) WM2688H*M Steam Washer Training T- 10...
Page 18: Water Circulation
This spray not only keeps the window and gasket clean, it allows the clothes to be soaked with detergent or rinse water more quickly and can be used to control an oversudsing event. WM2688H*M Steam Washer Training T- 11...
Page 19: Water Recirculation
The pumps and filter are located at the bottom left front corner. The filter can be unscrewed, cleaned, and replaced. WM2688H*M Steam Washer Training T- 11...
Page 20 The recirculating pump is on the right and recirculates water from the tub to the shower spray at the top of the door gasket via the smaller black hose. WM2688H*M Steam Washer Training T- 11...
Page 21: Parts Identification
Parts Identification WM2688H*M Steam Washer Training T- 12...
Page 22: Air Vent
The washer requires a space of at least 1 inch (2.5 cm) between the wall and the machine on each side and at least 4 inches (10 cm) between the back of the washer and the wall. Additional space may be needed for servicing. WM2688H*M Steam Washer Training T- 13...
Page 23 The shipping bolts MUST BE REMOVED before operating the washer. WM2688H*M Steam Washer Training T- 13...
Page 24: Remote Laundry Monitor And Modem
Remote Laundry 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. WM2688H*M Steam Washer Training T- 14...
Page 25: Install The Washer Modem
Save the small socket cover and screws in the event you need to remove the modem for some reason. The socket should be covered at all times. WM2688H*M Steam Washer Training T- 14...
Page 26: Install The Dryer Modem
After installation is complete, plug in the washer, dryer, and monitor, in that order. Turn on the washer and dryer. Press and hold the SET button on the monitor. WM2688H*M Steam Washer Training T- 14...
Page 27: Remove The Shipping Bolts
Remove The Shipping Bolts Remove the shipping bolts. WM2688H*M Steam Washer Training T- 15...
Page 28: Install On A Firm, Flat Surface
Install On A Firm, Flat Surface WM2688H*M Steam Washer Training T- 15...
Page 29: Level The Washer
Rock the corners to determine which leg is off. Adjust the front legs to get the washer level both front-to-back and side-to-side. Push it into position and fine-tune the leveling. Lock the adjusters when you are finished. WM2688H*M Steam Washer Training T- 15...
Page 30: Water Connections
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. WM2688H*M Steam Washer Training T- 16...
Page 31: Drain Connections
The vacuum breaker in the drain line will prevent drainage by gravity or siphoning. The hose can lay flat into a floor drain as long as the end of it is not submerged. WM2688H*M Steam Washer Training T- 16...
Page 32: Electrical Connections
Electrical Connections The steam washer requires a 120 VAC, 60 Hz., dedicated, 20-amp circuit. WM2688H*M Steam Washer Training T- x...
Page 33: Control Panel
Control Panel WM2688H*M Steam Washer Training T- 17...
Page 34: Option Buttons
Press to add extra water to the wash and rinse cycles. (Press and hold this button with the washer OFF and then press POWER to access the language menu.) To select the optional feature, follow the instructions in parentheses. WM2688H*M Steam Washer Training T- 18...
Page 35: Program Chart
Program Chart WM2688H*M Steam Washer Training T- 19...
Page 36: Safety Revisited
•The steam generator operates at a high temperature. Be careful when servicing it. It can be drained in place by removing the drain cap, but have a hose or a big towel ready to soak up the spillage. WM2688H*M Steam Washer Training T- 19...
Page 37 Detergents should carry the HE designation. Liquid Softener Do not use regular detergents in the Pre Wash washer or oversudsing will occur. (Liquid or Powder) WM2688H*M Steam Washer Training T- 20~21...
Page 38 As the appropriate chamber is flooded, the box fills and the water flushes the laundry product into the tub. It is mixed with water before contacting the laundry to prevent spotting or damaging the fabric. WM2688H*M Steam Washer Training T- 20~21...
Page 39 Some water may run through the main and pre- wash compartments, but since the detergent has already been dispensed in an earlier part of the cycle, this is of no consequence. WM2688H*M Steam Washer Training T- 20~21...
Page 40 Otherwise, the main wash liquid detergent will run into the tub along with the pre-wash detergent, causing oversudsing in the pre-wash and no cleaning in the main wash. WM2688H*M Steam Washer Training T- 20~21...
Page 41 Use only regular viscosity bleaches and softeners; the ultra versions are usually much thicker and do not dispense well, if at all. WM2688H*M Steam Washer Training T- 20~21...
Page 42: Direct Drive Motor
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. WM2688H*M Steam Washer Training T- 22...
Page 43 A Hall Effect sensor determines the speed and direction of the motor. It also can read that the load is off balance when the drum speed fluctuates. WM2688H*M Steam Washer Training T- 22...
Page 44 Motor WM2688H*M Steam Washer Training T- 23...
Page 45: Motor/Hall Effect Sensor
Otherwise, the drum may move forward enough to make replacing the bolt difficult. The helper can also hold the drum from turning while you tighten the bolt. WM2688H*M Steam Washer Training T- 23...
Page 46 Before going to this trouble, check the connector on the main board. It is the red connector closest to the heat sink. Pull the connector off and verify the board is receiving a signal from the sensor. WM2688H*M Steam Washer Training T- 23...
Page 47: Test Mode
Test Mode The steam washer must be empty and off to enter the test mode. Press and hold SPIN SPEED and SOIL LEVEL. Press POWER. Press START/PAUSE to cycle through the test modes. WM2688H*M Steam Washer Training T- 24...
Page 48: Check Water Level Frequency
Check Water Level Frequency WM2688H*M Steam Washer Training T- 24...
Page 49: Error Display
Error Display WM2688H*M Steam Washer Training T- 25...
Page 50 Error Display WM2688H*M Steam Washer Training T- 25...
Page 51 Error Display WM2688H*M Steam Washer Training T- 26...
Page 52 Diagnosis No Power Water Inlet Issue WM2688H*M Steam Washer Training T- 27...
Page 53 Diagnosis Door Error WM2688H*M Steam Washer Training T- 28...
Page 54 Diagnosis Drain Issue WM2688H*M Steam Washer Training T- 28...
Page 55 Diagnosis Oversudsing WM2688H*M Steam Washer Training T- 29...
Page 56 Diagnosis Dispenser Issue Error Code – Service WM2688H*M Steam Washer Training T- 29...
Page 57: Troubleshooting
Troubleshooting No Power WM2688H*M Steam Washer Training T- 30...
Page 58 Troubleshooting Vibration/Spin Noise WM2688H*M Steam Washer Training T- 31...
Page 59 Troubleshooting No Water Supply WM2688H*M Steam Washer Training T- 32...
Page 60 Troubleshooting Dispenser WM2688H*M Steam Washer Training T- 33...
Page 61 Troubleshooting Unusual Noise WM2688H*M Steam Washer Training T- 33...
Page 62 Troubleshooting Heater Error WM2688H*M Steam Washer Training T- 34...
Page 63 Troubleshooting Drain Issue WM2688H*M Steam Washer Training T- 34...
Page 64 Troubleshooting Wash Heater Issue WM2688H*M Steam Washer Training T- 35...
Page 65 Troubleshooting Over-Temp Issue WM2688H*M Steam Washer Training T- 35...
Page 66 Troubleshooting No Circulation WM2688H*M Steam Washer Training T- 36...
Page 67 Troubleshooting Spin Issue WM2688H*M Steam Washer Training T- 37...
Page 68 Troubleshooting dE Error WM2688H*M Steam Washer Training T- 37...
Page 69: Disassembly And Repair
PC Board. (Refer to the block wiring diagram, next slide.) Proper diagnosis will eliminate unnecessary labor and expedite repairs. WM2688H*M Steam Washer Training T- 38...
Page 70: Block Wiring Diagram
Block Wiring Diagram WM2688H*M Steam Washer Training T- 38...
Page 71 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. WM2688H*M Steam Washer Training T- 39...
Page 72 Lift the top away from the support rail and pull the control panel up and away to remove. Remove eight screws to separate the control panel and PWB. Reassembly is the reverse of these steps. WM2688H*M Steam Washer Training T- 39...
Page 73 Water Level Sensor Switch. Remove the protective cover. Press the plastic tabs out of the way to remove the cover. The main board is potted, so no repairs to it are possible. WM2688H*M Steam Washer Training T- 40...
Page 74 Remove the main board by sliding it to the right and lifting it up. Replacement is accomplished by pressing it toward the back of the washer and sliding it toward the left. WM2688H*M Steam Washer Training T- 40...
Page 75 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. WM2688H*M Steam Washer Training T- 41...
Page 76 Blue; yellow and black wires Red; violet and black wires White; white and black wires Blue; gray and black wires Red; blue and black wires (hot) Remove two screws from the back of the cabinet WM2688H*M Steam Washer Training T- 41...
Page 77 Disassembly and Repair Noise Filter Remove the connectors from the noise filter. Remove the screw from the top bracket. WM2688H*M Steam Washer Training T- 41...
Page 78 Disassembly and Repair Front Cover Remove the top plate. Remove the control panel. Remove four screws that secure the front panel. Remove the screw that secures the filter cover. WM2688H*M Steam Washer Training T- 42...
Page 79 Let the water (maybe as much as a quart) drain into a shallow pan. Don’t pull the hose out so far you kink it or the water will not flow. WM2688H*M Steam Washer Training T- 42...
Page 80 Disconnect the door switch connector. (Remember to replace it upon reassembly.) Lift the door and front cover off the cabinet base as an assembly. Lay it face down on a blanket or some other protective surface. WM2688H*M Steam Washer Training T- 43...
Page 81 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. Lift the door off the hinge. CAUTION! The door is HEAVY! WM2688H*M Steam Washer Training T- 44...
Page 82 Remove the two screws holding the switch. Push the gasket aside to remove the switch. Unplug the switch to change it. Make sure the wires don’t fall back in before you can replace the switch. WM2688H*M Steam Washer Training T- 44...
Page 83 Drain the water from the sump. 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. WM2688H*M Steam Washer Training T- 45...
Page 84 Disassembly and Repair Pump You can tilt the pump in either direction to remove/replace the individual pumps without having to remove the tub. Have a towel handy to catch the spillage. WM2688H*M Steam Washer Training T- 44...
Page 85 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. You may have to wiggle it to release the gasket. WM2688H*M Steam Washer Training T- 46...
Page 86 Disassembly and Repair Thermistor Remove the front cabinet. Drain the water from the sump. Unplug the white connector. Hold the bracket and pull the thermistor out. WM2688H*M Steam Washer Training T- 46...
Page 87 Disassembly and Repair Removal of Foreign Objects Remove the top cover. Remove the front cabinet cover. Remove the heater. Fish out the foreign object(s) using a wire or bar. WM2688H*M Steam Washer Training T- 47...
Page 88 Disassembly and Repair Interior Light Remove the top cover. Separate the connector near the lamp. Remove the lamp assembly and lead wire from the gasket. Replacement is the reverse of this procedure. WM2688H*M Steam Washer Training T- 47...
Page 89 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. WM2688H*M Steam Washer Training T- 48...
Page 90 Disassembly and Repair Motor Remove two screws from the tub bracket. Remove six bolts on the stator. Unplug two connectors on the stator. Pull the stator off the shaft. WM2688H*M Steam Washer Training T- 48...
Page 91 Disassembly and Repair Motor When re-installing, the clamps and the ground screw must be installed and the connectors pressed into place before the rotor is bolted onto the shaft. WM2688H*M Steam Washer Training T- 48...
Page 92 Generally speaking, you’ll have to remove all that anyway. Remove the motor. Drain the water from the sump. Remove the control panel. Remove the front cabinet. Disconnect all hoses and electrical connections. WM2688H*M Steam Washer Training T- 49...
Page 93 You can remove just one end now and the other one after the drum is out. Pry apart the retainer clip. Carefully lift the tub up off the springs and remove it from the machine. WM2688H*M Steam Washer Training T- 49...
Page 94 Tub and Drum Unbolt the bolts around the [photo goes here] circumference of the seam. Separate the halves. Be careful to avoid damaging the gasket. Do not pry on the surfaces between the halves. WM2688H*M Steam Washer Training T- 49...
Page 95 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. WM2688H*M Steam Washer Training T- 50...
Page 96 The flat end goes on the pointed end and the split end allows the head end to pass through while the pin is pushed out. The color and/or appearance of the damper may vary by model. WM2688H*M Steam Washer Training T- 50...
Page 97 When putting the tub back into the machine, connect the dampers to the tub first. It is much easier that way. Be careful not to pull the dampers apart while they are disconnected. WM2688H*M Steam Washer Training T- 50...
Page 98 If you remove the steam generator before draining it, be sure to avoid tipping it and spilling the water. WM2688H*M Steam Washer Training T- 51...
Page 99 The steam generator can be removed as an assembly for diagnosis and replacement. Unplug the washer. Disconnect all electrical connections, including ground. Drain the water. (You can drain the water later and it is easier.) WM2688H*M Steam Washer Training T- 51...
Page 100 They can be reused. Remove the four screws holding the support rail in place and two screws attaching the steam generator. Disconnect the hoses (water input and steam output.) WM2688H*M Steam Washer Training T- 51...
Page 101 Push the steam generator toward the back of the washer to release it from the side rail. You can then remove it for draining, inspection, and replacement. It is sold as an assembly and is not repairable. WM2688H*M Steam Washer Training T- 51...
Page 102 Disassembly and Repair Turbo Steam Generator (TSG) When the TSG is installed in the washer, the hoses to the dispenser should fit into the tubing guides. WM2688H*M Steam Washer Training T- 52...
Page 103 Pull the check valve out of the hose gently and replace it into the water input port. Then slide the hose onto the port and install the clamp. WM2688H*M Steam Washer Training T- 52...
Page 104: Tips And Tricks
The large hoses have notches on the ends to index them on the connectors. Be sure the notch is pushed down all the way on the index boss. WM2688H*M Steam Washer Training T- 53...
Page 105 Unscrew the retaining screw at the back of the baffle. Slide it toward the front of the washer to remove it. You can unscrew the retainer inside the baffle to replace the roller balls. WM2688H*M Steam Washer Training T- 53...
Page 106 Tips and Tricks Mushroom Valve Be sure the mushroom is in place before attaching the hose. If the stem is too long, it will contact the drum and make significant noise when the drum turns WM2688H*M Steam Washer Training T- 53...
Page 107 Tips and Tricks Ball Sensor (Off Balance) There isn’t one. This function is handled by the microprocessor and the hall sensor. WM2688H*M Steam Washer Training T- 53...
Page 108: Main Board
Remember, sometimes there may be a running production change. Refer to the wiring diagram. NA = natural/cream SB = sky blue BL = blue BK = black WM2688H*M Steam Washer Training T- 54...
Page 109 15. YL, noise filter 7. NA, Hall effect sensor 16. WH, noise filter, ground 8. BL, pressure sensor 17. NA, modem, control to socket 9. NA, door lock 18. BL, LEDs (not on all models) WM2688H*M Steam Washer Training T- 54...
Page 110 Main Board WM2688H*M Steam Washer Training T- 55...
Page 111: Exploded View
Exploded View Cabinet and Control Panel WM2688H*M Steam Washer Training T- 56...
Page 112 Exploded View Drum and Tub Assembly WM2688H*M Steam Washer Training T- 57...
Page 113 Exploded View Dispenser WM2688H*M Steam Washer Training T- 58...
Page 114: Parts List
3W20018B Wrench 3828ER3048Q Service Manual A100 3091ER0004P Cabinet Assembly A101 3550ER1028A Rear Cover A102 4830ER3001A Bushing A102 4830ER3001A Bushing A103 4930ER3014A Holder A104 4011FR3159E Shipping Bolt, Upper (Short) A105 4011FR3159D Shipping Bolt, Lower (Long) WM2688H*M Steam Washer Training T- 59...
Page 115: Discovery Steam Washer
Discovery Steam Washer THE END WM2688H*M Steam Washer Training...

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