Scan to see the online manual. OWNER'S MANUAL WASHING MACHINE Read this owner's manual thoroughly before operating the appliance and keep it handy for reference at all times. ENGLISH WM4000H*A / WM4080H*A MFL71728908 Rev.03_032223 www.lg.com Copyright © 2020-2023 LG Electronics Inc. All Rights Reserved.
TABLE OF CONTENTS 3 IMPORTANT SAFETY INSTRUCTIONS 3 3 6 READ ALL INSTRUCTIONS BEFORE USE WARNING STATEMENTS CAUTION STATEMENTS 7 PRODUCT OVERVIEW 7 Product Features 9 INSTALLATION 9 10 11 12 13 14 15 Before Installing Choosing the Proper Location Unpacking and Removing Shipping Material Connecting the Water Inlet Hoses Connecting the Drain Hose Leveling the Washer Final Installation Check 17 OPERATION 17 18 19 20 23 25 29 29 Before Use Sorting Laundry Loading the Washer Adding Cleaning Produ
IMPORTANT SAFETY INSTRUCTIONS 3 IMPORTANT SAFETY INSTRUCTIONS Safety Messages Your safety and the safety of others are very important. We have provided many important safety messages in this manual and on your appliance. Always read and follow all safety messages. This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or injure you and others. All safety messages will follow the safety alert symbol and either the word WARNING or CAUTION.
IMPORTANT SAFETY INSTRUCTIONS • Destroy the carton, plastic bag, and other packing materials after the appliance is unpacked. Children might use them for play. Cartons covered with rugs, bedspreads, or plastic sheets can become airtight chambers. • The appliance must be installed and electrically grounded by qualified service personnel in accordance with local codes. • When installing or moving the appliance, be careful not to pinch, crush, or damage the power cord.
IMPORTANT SAFETY INSTRUCTIONS 5 • Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. • Never use harsh chemicals, abrasive cleaners, or solvents to clean the washer. They will damage the finish.
IMPORTANT SAFETY INSTRUCTIONS CAUTION STATEMENTS CAUTION • To reduce the risk of minor or moderate injury to persons, malfunction, or damage to the product or property when using this product, follow basic precautions, including the following: Installation • Install the product on a firm and level floor. Operation • Do not place objects on top of the appliance. • Turn off the water faucets and unplug the appliance if the appliance is to be left for an extended period of time, such as during vacations.
PRODUCT OVERVIEW 7 PRODUCT OVERVIEW The images in this guide may be different from the actual components and accessories, which are subject to change by the manufacturer without prior notice for product improvement purposes. WARNING • For your safety and for extended product life, use only authorized components. The manufacturer is not responsible for product malfunction, property damage or bodily injury caused by the use of separately purchased unauthorized components, parts, or non-LG products.
PRODUCT OVERVIEW Accessories Included Accessories a Non-skid Pads b Hole Caps c Wrench d Tie Strap e Elbow Bracket (for securing drain hose) Required Accessories (sold separately) a Hot and Cold Water Hoses Optional Accessories (sold separately) a Pedestal† b Pedestal Washer† c Stacking Kit † Check the width of the pedestal before purchasing to make sure that it matches the width of your appliance (27" (70 cm) or 29" (74 cm)).
INSTALLATION 9 INSTALLATION Installation Overview Please read the following installation instructions first after purchasing this washer or transporting it to another location. a b c e f a Choosing the Proper Location b Unpacking and Removing Shipping Material c Connecting the Inlet Hoses d Connecting the Drain Hose e Leveling the Washer f Final Installation Check WARNING • Moving or installation of the appliance requires two or more people. Failure to follow these instructions may result in injury.
INSTALLATION WARNING • Certain internal parts are intentionally not grounded and may present a risk of electric shock only during servicing. Service personnel- Do not contact the following parts while the appliance is energized: pump, valve, motor, control board. Tools Needed a Pliers b Flat-Blade Screwdriver c Level Choosing the Proper Location Check the following requirements for the install location before installing the washer.
INSTALLATION 11 Dimensions and Clearances F 1/4'' (0.5 cm) The washer can be stacked under a dryer or on top of a pedestal or pedestal washer. *Some models do not ship with drum support. Lift the washer off the foam base. • After removing the carton and shipping material, lift the washer off the foam base. • Make sure the plastic drum support a* comes off with the base and is not stuck to the bottom of the washer.
INSTALLATION the washer. Install the caps in the holes left by the bolt assemblies. • Water supply pressure must be between 20 psi and 120 psi (138 - 827 kPa). If the water supply pressure is more than 120 psi, a pressure reducing valve must be installed. • Your hot water heater should be set to deliver water at 120–135 °F (48–57 °C) to allow the washer to properly control wash temperatures. CAUTION • Once removed, save the bolt assemblies for future use.
INSTALLATION 13 3 Flush out the inlet hoses. • Let the water drain into a bucket, and check the water temperature to make sure you’ve connected the hoses to the correct faucets. • For best results, locate the end of the drain hose no higher than 66" (168 cm) above the bottom of the washer. As the drain outlet is raised beyond 66" (168 cm), the drain function will be increasingly affected. • Never create an airtight seal between the hose and the drain with tape or other means.
INSTALLATION 3 4 If the water valves and drain are built into the wall, fasten the drain hose to one of the water hoses with the provided tie strap c (ribbed side on inside). 24 - 96 " (61 - 244 cm) 24 - 96 " (61 - 244 cm) Using the Laundry Tub to Drain 1 Clip the end of the hose into the elbow bracket. • Connect the elbow bracket a within 4 inches (10 cm) of the end of the drain hose.
INSTALLATION 15 inch, and all 4 leveling feet must rest firmly on the floor. Clean the floor to attach the non-skid pads. • Use a dry rag to remove and clean foreign objects or moisture. If moisture remains, the non-skid pads may slip. 2 Adjust the level after placing the washer in the installation area. 3 Place the adhesive side c of the non-skid pad on the floor. • It is most effective to install the non-skid pads under the front leveling feet.
INSTALLATION WARNING • Connect this appliance to a grounded outlet conforming to the rating prior to use. Failure to do so may result in fire, electric shock, or malfunction. • Do not damage or cut off the ground prong of the power cord. Doing so may cause death, fire, electric shock, or product malfunction. • Improper connection of the equipment grounding conductor can result in risk of electric shock.
OPERATION 17 OPERATION WARNING • To reduce the risk of fire, electric shock, or injury to persons, read the SAFETY INSTRUCTIONS before operating this appliance. Operation Overview 1 Sort laundry and load the washer. • Sort laundry by fabric type, soil level, color and load size as needed. Open the door and load items into the washer. • If using single-use detergent packs, or gel or tablet detergents, place them in the drum before loading the laundry. 2 Add cleaning products.
OPERATION 7 End of cycle. • When the cycle is finished, a melody sounds. Immediately remove the clothing from the washer to reduce wrinkling. • Check around the door seal when removing the load for small items that may be caught in the seal. NOTE • The washer rotates the laundry in a way that allows it to use less water while still fully saturating the clothing. It is normal to be unable to see water during the wash cycle.
OPERATION 19 outdoor clothes, and plastic mats.) Failure to do so may result in personal injury or damage to the washer, clothes, walls, floor, and surrounding objects due to abnormal vibration. Fabric Care Labels Many articles of clothing include a fabric care label. Using the chart below, adjust the cycle and option selections to care for your clothing according to the manufacturer’s recommendations.
OPERATION • The washer can be fully loaded, but the drum should not be tightly packed with items. The door of the washer must close easily. • The washer will not fill or operate with the door open. CAUTION • Clothing or articles that are waterproof or waterresistant must be washed in the Waterproof, Bedding, Bulky/Large, or Jumbo Wash cycle only. (Examples include water resistant clothing, mattress covers, outdoor clothes, and plastic mats.
OPERATION 21 2 Load the laundry products into the appropriate compartments. • The amount of detergent added for the Prewash option is 1/2 the amount recommended for the main wash cycle. For example, if the main wash cycle requires one measure of detergent, add 1/2 measure for the Pre-wash option. Main Wash Detergent Compartment This compartment holds laundry detergent for the main wash cycle. Either powdered or liquid detergent may be used in this compartment.
OPERATION NOTE • Do not add powdered bleach to this compartment. The bleach compartment is designed to dispense liquid chlorine bleach only. Powdered or liquid color-safe bleach will not dispense properly. • Follow the manufacturer’s recommendations when adding bleach. Never add more than one cup, and do not exceed the maximum fill line or the bleach may be dispensed immediately and damage fabrics. Using too much bleach can also damage fabrics.
OPERATION 23 Control Panel Control Panel Features ENGLISH a Power On/Off Button • Press this button to turn the washer on or off. • Pressing this button during a cycle will cancel that cycle and any load settings will be lost. • The door will unlock after a brief pause. NOTE • If there is any water remaining in the drum after the washer shuts off, it will drain after a delay. The washer can be restarted at any time before the drain begins.
OPERATION Time and Status Display a Cycle Status Indicators • These LEDs will blink when a cycle is selected to indicate which stages will run. • When a cycle is running, the LED for the active stage will blink, and the LEDs for the remaining stages will remain steady. Once a stage is complete, the LED will turn off. If a cycle is paused, the active stage LED will stop blinking. b Estimated Time Remaining • When a cycle is selected, the default time for that cycle is displayed.
OPERATION 25 Wash Cycles Cycle Guide Turn the knob or press the button to select the desired cycle. When you select a wash cycle, the light for the corresponding wash cycle will turn on. NOTE • Whenever load weights are mentioned, assume 1 lb (0.45 kg) = 1 thick bath towel (dry). • Temperature indicator lights up when one of Tap Cold, Cold, Warm, Hot or Extra Hot is selected. • Spin indicator lights up when one of No Spin, Low, Medium, High or Extra High is selected.
OPERATION Cycle Bedding Wash Temp. Default: Warm Available: Hot, Warm, Cold, Tap Cold Spin Speed Default: Medium Available: Medium, Low, No Spin Soil Level Default: Normal Available: All Cycle Sanitary Description Washes clothes at a high temperature. Wash Temp.
OPERATION 27 Cycle Perm. Press Default: Warm Available: Hot, Warm, Cold, Tap Cold Spin Speed Default: Medium Available: High, Medium, Low, No Spin Soil Level Default: Normal Available: All Cycle Towels Description Use this cycle for washing towels, shirts, jeans and mixed loads. Wash Temp.
OPERATION Steam Fresh Care Turbo WashTM Cold Wash Pre-wash Normal # # #† # # Heavy Duty # # #† # # Bedding # # # # # Sanitary # # # AllergieneTM #† # # Bright WhitesTM # # # Cycle Delicates # Perm.
OPERATION 29 Cycle Modifiers About Modifier Buttons • Repeatedly press the button for the desired modifier until the indicator light for the desired setting is lit. • The washer automatically adjusts the water level for the type and size of wash load for best results and maximum efficiency. • This is a high-efficiency washer, and the water levels may be much lower than you expect. This is normal, and cleaning/rinsing performance will not be compromised.
OPERATION WARNING • Do not attempt to override the door lock mechanism or reach into the washer during a steam cycle. Steam can cause severe burns. • Each press of this button increases the delay time by 1 hour, for up to 19 hours. • Once the desired delay time is set, press the Start/Pause button to start the delay time. NOTE Fresh Care Use this function when you will not be able to unload your clothes immediately after the wash cycle ends.
OPERATION 31 • This function is disabled during the Tub Clean cycle. • Be careful when opening the door as wet laundry may drip or fall out. Use this function to disable the controls. This function can prevent children from changing cycles or operating this washer. NOTE • The function does not lock the door. • Once this function is set, all buttons are locked except the Power button.
OPERATION 2 Press and hold the Spin button for 3 seconds. • You can change the spin speed by pressing the Spin button. 3 Press the Start/Pause button to begin.
SMART FUNCTIONS 33 SMART FUNCTIONS The LG ThinQ application allows you to communicate with the appliance using a smartphone. LG ThinQ Application Features The app is compatible with products that contain the wireless LAN module. Installing LG ThinQ Application and Connecting an LG Appliance Models with QR Code Scan the QR code attached to the product using the camera or a QR code reader application on your smartphone. • Remote Start - Control the appliance remotely from the LG ThinQ application.
SMART FUNCTIONS NOTE • The appliance supports 2.4 GHz Wi-Fi networks only. To check your network frequency, contact your Internet service provider or refer to your wireless router manual. • LG ThinQ is not responsible for any network connection problems or any faults, malfunctions, or errors caused by network connection. • The surrounding wireless environment can make the wireless network service run slowly.
SMART FUNCTIONS 35 the party responsible for compliance could void the user’s authority to operate the equipment. NOTE Wireless LAN Module Specifications Frequency Range 2412 - 2462 MHz Output Power (Max) < 30 dBm FCC Notice The following notice covers the transmitter module contained in this product. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
SMART FUNCTIONS terms, copyright notices and other relevant documents, please visit https:// opensource.lge.com. 2 Place the mouthpiece of your smartphone close to the Power button. LG Electronics will also provide open source code to you on CD-ROM for a charge covering the cost of performing such distribution (such as the cost of media, shipping, and handling) upon email request to opensource@lge.com.
MAINTENANCE 37 MAINTENANCE • To reduce the risk of fire, electric shock, or injury to persons, read this entire owner’s manual, including the SAFETY INSTRUCTIONS, before operating this appliance. • Unplug the appliance before cleaning to avoid the risk of electric shock. Failure to follow this warning can cause serious injury, fire, electric shock, or death. • Do not use volatile substances (benzene, paint thinner, alcohol, acetone, etc.
MAINTENANCE • Do not exceed the maximum fill line when adding bleach or powdered cleaners. Powdered cleaners may remain in the drum after cleaning. 3 Close the door and press the Power button. 4 Select the Tub Clean cycle and press the Start/Pause button to begin the cycle. 5 After the cycle ends, open the door and allow the drum interior to dry completely. WARNING • Make sure children and pets do not climb into the drum.
MAINTENANCE 39 7 Replace the drawer. WARNING • The inlet screens protect the delicate parts of the inlet valve from being damaged by particles that could enter the valves with the water supply. Operating the washer with these filters removed could cause a valve to open continuously, resulting in flooding and/or property damage. CAUTION • Do not use the washer without the inlet filters. Doing so will cause leaks and malfunction.
MAINTENANCE 7 Flush then reattach the water hoses. • Before reattaching the water inlet hoses, flush them by running several gallons of water through them into a bucket or drain, preferably with the faucets wide open for maximum flow. NOTE • An IE error message may blink on the display when the water pressure is low or an inlet filter is clogged with dirt. Clean the inlet filter. 4 Cleaning the Drain Pump Filter Remove the pump filter. • Twist the pump filter counterclockwise to remove.
MAINTENANCE 41 5 Add 1 gallon of nontoxic recreational vehicle (RV) antifreeze to the empty drum and close the door. 8 Close the drain pump filter cover. 6 Turn on the washer and press the Spin button. 7 Press the Start/Pause button to start the drain pump for 1 minute. • This will expel some of the antifreeze, leaving enough to protect the washer from damage. NOTE • An OE message blinks on the display when the drain pump filter is clogged with dirt. Clean the drain pump filter.
MAINTENANCE 4 Immerse the water inlet hoses in hot water to thaw them. 5 Reconnect the water inlet hoses to the water inlets of the washer and to the faucets. • See Connecting the Water Inlet Hoses for details. 6 Turn on the faucets. 7 Press the Power button to turn on the washer. 8 Press the Spin button to operate spin only cycle for draining and spinning. 9 Press the Start/Pause button. When the Drain Hose Is Frozen 1 Pour hot water in the washer drum and close the door.
TROUBLESHOOTING 43 TROUBLESHOOTING The washer is equipped with an automatic error-monitoring system to detect and diagnose problems at an early stage. If the washer does not function properly or does not function at all, check the following before you call for service. FAQs Q: Why does my washer make loud banging noises while it is filling with water? A: This is actually a problem with the plumbing in your home.
TROUBLESHOOTING Problem Possible Cause & Solution UE The load is too small. UNBALANCE ERROR • Add additional items to allow the washer to balance the load. Heavy articles are mixed with lighter items. • Always try to wash articles of somewhat similar weight to allow the washer to evenly distribute the weight of the load for spinning. The load is out of balance. • Manually redistribute the load if articles have become tangled, preventing the automatic rebalancing from working properly.
TROUBLESHOOTING 45 Problem Possible Cause & Solution Vibration sensor malfunctions. VIBRATION SENSOR ERROR • Call for service. ENGLISH vs Common Problems Problem Strange vibration or noise Possible Cause & Solution Strange vibration or noise caused by not removing the plastic drum support or shipping bolts. • Remove the plastic drum supporta or shipping boltsb. If all screws are not installed properly, it may cause excessive vibration (Pedestal model only).
TROUBLESHOOTING Problem Water Leaking Possible Cause & Solution The gasket is damaged because the clothes are jammed between the door glass and the gasket. • Replace gasket or call for service. Drain hose has come out of the drain connector or is not inserted far enough. • Tie drain hose to inlet hose or standpipe to prevent it from coming out during drain. 24 - 96 " (61 - 244 cm) 24 - 96 " (61 - 244 cm) Water supply hose is improper installed or using other brand supply hose.
TROUBLESHOOTING 47 Problem Washer is not filling properly. Possible Cause & Solution • Clean the inserts and drawer with warm water. The water tap is not turned on. • Turn on the water tap. Washer is hot or warm after finished washing. Supply hoses are installed in reverse. Washer will not turn on. Power cord is plugged loosely, or electrical outlet has a problem. • Attach the hot water inlet hose to the hot water inlet, and the cold water inlet hose to the cold water inlet.
TROUBLESHOOTING Problem Possible Cause & Solution Service resulting from improper installation is not covered. The warranty covers manufacturing defects only. Banging noise when the washer is filling with water. (Water hammer) Household water supply pressure is very high. • Costs are incurred for: Service trips to deliver, pick up, install the product or for instruction on product use. The removal and reinstallation of the product.
TROUBLESHOOTING 49 Problem Vibrating noise Possible Cause & Solution Wash load may be unevenly distributed in the drum. • Pause the cycle and redistribute the load after the door unlocks. • See Leveling the Washer in INSTALLATION. Floor is not rigid enough. • Make sure that the floor is solid and does not flex. See Flooring in INSTALLATION. Squeaking noise Packaging materials were not removed. • See Unpacking and Removing Shipping Material in INSTALLATION.
TROUBLESHOOTING Problem Possible Cause & Solution Washer will not turn on. House fuse is blown, circuit breaker has tripped, or power outage has occurred. Wash cycle time is longer than usual. The washer automatically adjusts the wash time for the amount of laundry, water pressure and other operating conditions. • Reset circuit breaker or replace fuse. Do not increase fuse capacity. If the problem is a circuit overload, have it corrected by a qualified electrician. • This is normal.
TROUBLESHOOTING 51 Problem Washer will not operate. Possible Cause & Solution Extremely low water pressure. Washer is too cold. • If the washer has been exposed to temperatures below freezing for an extended period of time, allow it to warm up before pressing the Power button. Otherwise, the display will not come on. Washer stops for a few minutes and then restarts. A motor protection device has been activated to prevent overheating of the motor. Washer is not filling properly. Filter is clogged.
TROUBLESHOOTING Performance Problem Wrinkling Possible Cause & Solution Washer is not unloaded promptly. • Always remove items from the washer as soon as the cycle is complete. Washer is overloaded. • The washer can be fully loaded, but the drum should not be tightly packed with items. The door of the washer should close easily. Hot and cold water inlet hoses are reversed. • Hot water rinse can set wrinkles in garments. Check the Inlet hose connectors. Staining Bleach or softener dispensed too soon.
TROUBLESHOOTING 53 Problem Odor Possible Cause & Solution Odors can occur if the drainage hose is not properly installed, causing siphoning (water flowing back inside the washing machine). Using the dry function, odors can occur from lint and other laundry matter sticking to the heater. (Dryer model only) • This is not a malfunction. A particular odor can occur from drying wet clothes with hot air. (Dryer model only) • The odor will disappear after a short while.
LIMITED WARRANTY LIMITED WARRANTY USA TERMS AND CONDITIONS ARBITRATION NOTICE: THIS LIMITED WARRANTY CONTAINS AN ARBITRATION PROVISION THAT REQUIRES YOU AND LG ELECTRONICS (“LG”) TO RESOLVE DISPUTES BY BINDING ARBITRATION INSTEAD OF IN COURT, UNLESS YOU CHOOSE TO OPT OUT. IN ARBITRATION, CLASS ACTIONS AND JURY TRIALS ARE NOT PERMITTED. PLEASE SEE THE SECTION TITLED “PROCEDURE FOR RESOLVING DISPUTES” BELOW.
LIMITED WARRANTY 55 • Damage or failure of the Product resulting from operating the Product in a corrosive atmosphere or contrary to the Product owner’s manual. • Damage or failure of the Product caused by unauthorized modification or alteration, or if the Product is used for other than the intended purpose, or any water leakage where the Product was not properly installed. • Damage or failure of the Product caused by incorrect electrical current, voltage, or plumbing codes.
LIMITED WARRANTY notice must provide your name, address, and telephone number; identify the product that is the subject of the claim; and describe the nature of the claim and the relief being sought. If you and LG are unable to resolve the dispute within 30 days, either party may proceed to file a claim for arbitration. Agreement to Binding Arbitration and Class Action Waiver.
LIMITED WARRANTY 57 www.lg.com/us/support/repair-service/schedule-repair-continued and clicking on “Find My Model & Serial Number”). ENGLISH You may only opt out of the dispute resolution procedure in the manner described above (that is, by e-mail or telephone); no other form of notice will be effective to opt out of this dispute resolution procedure.
LIMITED WARRANTY CANADA TERMS AND CONDITIONS ARBITRATION NOTICE: THIS LIMITED WARRANTY CONTAINS AN ARBITRATION PROVISION THAT REQUIRES YOU AND LG TO RESOLVE DISPUTES BY BINDING ARBITRATION INSTEAD OF IN COURT, UNLESS THE LAWS OF YOUR PROVINCE OR TERRITORY DO NOT PERMIT THAT, OR, IN OTHER JURISDICTIONS, IF YOU CHOOSE TO OPT OUT. IN ARBITRATION, CLASS ACTIONS AND JURY TRIALS ARE NOT PERMITTED. PLEASE SEE THE SECTION TITLED “PROCEDURE FOR RESOLVING DISPUTES” BELOW.
LIMITED WARRANTY 59 THIS LIMITED WARRANTY DOES NOT COVER: • Service trips to i) deliver, pick up, or install or; educate on how to operate the Product; ii) correct wiring or plumbing; or iii) correct unauthorized repairs or installations of the Product; • Damage or failure caused by leaky or broken water pipes, frozen water pipes, restricted drain lines, inadequate or interrupted water supply or inadequate supply of air; • Damage or failure resulting from operating the Product in a corrosive atmosphere or
LIMITED WARRANTY PROCEDURE FOR RESOLVING DISPUTES: EXCEPT WHERE PROHIBITED AT LAW, ALL DISPUTES BETWEEN YOU AND LG ARISING OUT OF OR RELATING IN ANY WAY TO THIS LIMITED WARRANTY OR THE PRODUCT SHALL BE RESOLVED EXCLUSIVELY THROUGH BINDING ARBITRATION, AND NOT IN A COURT OF GENERAL JURISDICTION. EXCEPT WHERE PROHIBITED AT LAW, YOU AND LG BOTH IRREVOCABLY AGREE TO WAIVE THE RIGHT TO A JURY TRIAL AND TO BRING OR PARTICIPATE IN A CLASS ACTION. Definitions.
LIMITED WARRANTY 61 Hearings and Location. If your claim is for $25,000 or less, you may choose to have the arbitration conducted solely (1) on the basis of documents submitted to the arbitrator, (2) through a telephonic hearing, or (3) by an in-person hearing as established by the applicable arbitration rules. If your claim exceeds $25,000, the right to a hearing will be determined by the applicable arbitration rules.
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