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 WM4200H*A / WM4100H*A MFL71728905 Rev.01_021522 www.lg.com Copyright © 2020-2022 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 a Hot and Cold Water Hoses Included Accessories Optional Accessories (sold separately) a Non-skid Pads a Pedestal† b Hole Caps c Wrench b Pedestal Washer† d Tie Strap c Stacking Kit e Elbow Bracket (for securing drain hose) Required Accessories (sold separately) † 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 Model WM4200H*A WM4100H*A 4'' (10 cm) E 1'' (2.5 cm) F 27'' (70 cm) G 1/4'' (0.5 cm) Remove all shipping materials from the washer for proper operation and inspect it for shipping damage. CAUTION • Failure to remove shipping materials can cause excessive noise and vibration. Stacking or Pedestal Installation The washer can be stacked under a dryer or on top of a pedestal or pedestal washer.
INSTALLATION 2 Install the hole caps. • Locate the hole caps d included in the accessory pack or attached to the back of the washer. Install the caps in the holes left by the bolt assemblies. • Do not stretch the water hoses intentionally, and make sure that they are not pinched, crushed or kinked by other objects. • 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.
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 • 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. Check with a qualified electrician or service technician if you are in doubt as to whether the appliance is properly grounded. If the plug does not fit the outlet, have a proper outlet installed by a qualified electrician.
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 • Remove the stuffing from pillows and cushions before washing the covers. Failure to do so can cause excessive vibration, resulting in damage to the washer, clothes, nearby objects, walls, and floor. 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 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.) Failure to do so may result in personal injury or damage to the washer, clothes, walls, floor, and surrounding objects due to abnormal vibration.
OPERATION 21 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. • The detergent is added to the load at the beginning of the cycle. Always use HE (HighEfficiency) detergent with your washer.
OPERATION NOTE • 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. • Never pour undiluted liquid chlorine bleach directly onto the load or into the drum. Fabric damage can occur. • Do not use color-safe bleach or oxygen bleach in the same cycle with liquid chlorine bleach.
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 Bright WhitesTM Cycle Description This cycle is for washing white items only. (less than 15 lb (6.8 kg)) 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 Cycle Downloaded (Small Load) Wash Temp. Default: Warm Available: Hot, Warm, Cold, Tap Cold Spin Speed Default: High Available: All Soil Level Default: Normal Available: All Available Options † This option is automatically included in the cycle and cannot be deselected. NOTE • Delay Wash, Extra Rinse, and Add Item can be selected for every cycle in this table. • Steam and Cold Wash cannot be selected at the same time.
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. Fresh Care • Once the desired delay time is set, press the Start/Pause button to start the delay time. NOTE • If the Start/Pause button is not pressed to begin the delay time, the washer automatically turns off after a certain time and all cycle settings are lost.
OPERATION 31 • To preserve wash performance, wash time may be extended depending on when garments are added to a cycle. 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. TM Turbo Wash Adding this option reduces the cycle time while still providing similar wash performance to the same cycle without Turbo WashTM.
SMART FUNCTIONS SMART FUNCTIONS Using LG ThinQ Application Before Using LG ThinQ Application The LG ThinQ application allows you to communicate with the appliance using a smartphone. 1 • If the appliance is too far from the router, the signal strength becomes weak. It may take a long time to connect or installation may fail. LG ThinQ Application Features The app is compatible with products that contain the wireless LAN module.
SMART FUNCTIONS 33 unplug the appliance and wait about a minute before trying again. turned off remotely from the application or this function is disabled. • If the door has been opened, you cannot start a cycle remotely. • The wireless network name (SSID) should be a combination of English letters and numbers. (Do not use special characters.) Disabling Remote Start Manually • Smartphone user interface (UI) may vary depending on the mobile operating system (OS) and the manufacturer.
SMART FUNCTIONS • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and the receiver. • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. This device complies with part 15 of the FCC Rules.
SMART FUNCTIONS 35 troubleshooting data to a smartphone using the LG ThinQ application. Using Audible Diagnosis to Diagnose Issues Follow the instructions below to use the audible diagnosis method. • Launch the LG ThinQ application and select the Smart DiagnosisTM feature in the menu. Follow the instructions for audible diagnosis provided in the LG ThinQ application. 1 Press the Power button to turn on the appliance. • Do not press any other buttons.
MAINTENANCE MAINTENANCE WARNING • 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 37 • Do not exceed the maximum fill line when adding bleach or powdered cleaners. Powdered cleaners may remain in the drum after cleaning. 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. After you finish using the washer, leave the door open overnight to allow air to circulate and dry the drum. This helps prevent odors.
MAINTENANCE 8 Replace the drawer. CAUTION • Do not use the washer without the inlet filters. Doing so will cause leaks and malfunction. • If you use the washer in an area with hard water, the inlet filter may clog due to lime buildup and require more frequent cleaning. Cleaning the Door Seal Clean the door seal once a month to prevent build-up of dirt. 1 Turn off the washer, and unplug the power cord. 2 Turn off hot and cold water faucets.
MAINTENANCE 39 Cleaning the Drain Pump Filter ENGLISH The washer fails to drain if the drain pump filter is clogged. Periodically clean the drain filter to prevent clogging with foreign objects. WARNING • Opening the drain filter will result in water overflowing if there is water in the drum. Use a bucket if the drum is not completely drained before you open the drain filter.
MAINTENANCE Care in Cold Climates Storing the Washer If the washer will not be used for an extended period of time and is in an area that could be exposed to freezing temperatures, follow these steps to protect the washer from damage. 9 Dry the drum interior with a soft cloth, and close the door. 10 Store the washer in an upright position. 11 Remove the inserts from the dispenser. Drain any water in the compartments and let them dry.
MAINTENANCE 41 When the Drain Hose is Frozen Pour hot water in the washer drum and close the door. 2 Wait for 1 - 2 hours. 3 Press the Power button. 4 Press the Spin button to operate spin only cycle for draining and spinning. 5 Press the Start/Pause button to make sure the water drains.
TROUBLESHOOTING TROUBLESHOOTING Before Calling for Service 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 43 Problem Possible Cause & Solution 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 Problem Possible Cause & Solution vs Vibration sensor malfunctions. VIBRATION SENSOR ERROR • Call for service. Noises Problem Clicking Possible Cause & Solution Door lock sounds when the door locks or unlocks. • Normal operation Spraying or hissing Water spraying or circulating during the cycle • Normal operation Humming or Gurgling Drain pump is pumping water from the washer at times during a cycle.
TROUBLESHOOTING 45 Problem Plumbing in the home moves or flexes when the water valves in the washer shut off. • Water hammer is not caused by a defect in the washer. Install water hammer arrestors (purchased separately at hardware or home improvement store) between the fill hose and the washer for best results. Household water supply pressure is very high. • Adjust household water supply regulator to a lower pressure or contact a plumber.
TROUBLESHOOTING Problem Incomplete or no dispensing of detergent Possible Cause & Solution Detergent compartments clogged from incorrect filling. • Make sure that detergent and additives are put into the correct dispenser compartments. • For all detergent types, always make sure that the dispenser drawer is fully closed before the start of the cycle. Too much detergent used. • Make sure that the suggested amount of detergent is used according to the manufacturer’s recommendations.
TROUBLESHOOTING 47 Problem Possible Cause & Solution A motor protection device has been activated to prevent overheating of the motor. Washer is not filling properly. Filter is clogged. • This is normal. If the motor protection device activates, the washer will stop for a few minutes and then start again. • Make sure that inlet filters on the fill valves are not clogged. Refer to Cleaning the Water Inlet Filters in MAINTENANCE. Inlet hoses may be kinked.
TROUBLESHOOTING Problem Wrinkling Possible Cause & Solution 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. • Dispenser compartment was overfilled or closed too quickly, causing the bleach or softener to dispense immediately.
TROUBLESHOOTING 49 Problem Odor Possible Cause & Solution Using the dry function, odors can occur from lint and other laundry matter sticking to the heater. (Dryer model only) A particular odor can occur from drying wet clothes with hot air. (Dryer model only) • The odor will disappear after a short while. Wi-Fi Problem Trouble connecting appliance and smartphone to Wi-Fi network Possible Cause & Solution The password for the Wi-Fi network was entered incorrectly.
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 51 • Damage or failure of the Product 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 of the Product caused by accidents, pests and vermin, lightning, wind, fire, floods, pandemics, acts of nature, or any other causes beyond the control of LG.
LIMITED WARRANTY Notice of Dispute. In the event you intend to commence an arbitration proceeding, you must first notify LG in writing at least 30 days in advance of initiating the arbitration by sending a letter to LG at LG Electronics, USA, Inc. Attn: Legal Department-Arbitration 111 Sylvan Avenue, Englewood Cliffs, NJ 07632. You and LG agree to engage in good faith discussions in an attempt to amicably resolve your claim.
LIMITED WARRANTY 53 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. Opting out of this dispute resolution procedure will not affect the coverage of the Limited Warranty in any way, and you will continue to enjoy the full benefits of the Limited Warranty.
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 55 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 57 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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