Musty washer: find the cleaning need LG WM4000HWA Separate moisture left after a wash from visible residue. Select only the maintenance that the inspection supports and keep each cleaning product and procedure separate. 1. Trace a musty washer smell Status: Planned Reason: Locate moisture or visible residue and identify which follow-up checklist is relevant. Continue / skip: Begin after a completed cycle, safe unlocking and removal of damp laundry. Skip follow-up cleaning where no need is observed. Stop: Stop if odor accompanies an active leak, drainage trouble, damage or an unsafe inspection area. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-odor/ 2. Wash residue from the dispenser drawer Status: Planned Reason: Address dispenser residue when the inspection identifies it. Continue / skip: Continue only for visible drawer residue or a due drawer clean. Skip a clean dispenser. Stop: Stop if the release does not match the manual, the drawer resists or the recess cannot be kept dry. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-drawer-clean/ 3. Clean buildup around the door seal Status: Planned Reason: Use the separate seal procedure when buildup is present, with its own protective equipment and dilution instructions. Continue / skip: Continue only if seal cleaning is indicated and all chemical-handling preparation is met. Skip an intact, clean seal. Stop: Stop for a split or displaced seal, unavailable protective equipment or any risk of mixing cleaners. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-door-seal/ 4. Run an empty Tub Clean cycle Status: Planned Reason: Choose the empty cleaning cycle when the inspection or maintenance record indicates it is due. Continue / skip: Continue only after prior hands-on work is complete, all parts are refitted and the empty-cycle preparation is met. Skip if no drum-cleaning need remains. Stop: Stop if the appliance is not safely assembled, laundry remains inside, a cleaner is unsuitable or the symptom requires support. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-tub-clean/ YOUR PLANNING RECORD A moisture-and-residue map with the drawer, seal and drum marked observed, skipped or paused; cleaning dates and the odor observation at the next normal use. Notes: ____________________ A plan status records an observation or decision. It does not complete the linked task or certify a repair. FULL TASK GUIDES Trace a musty washer smell LG WM4000HWA Region: US | Content version: 2.0.0 Separate damp laundry, drawer residue and drum cleaning needs before choosing maintenance. MODEL AND MANUAL Exact model: WM4000HWA Rinse+Spin button with Control Lock marking; Tub Clean cycle. Compare your supplied manual with MFL71728908 Rev.02_051022. Manual: MFL71728908 Rev.02_051022 Excludes: WM3400CW; WM4000HBA; WM4080HWA; WM4000HWA with a different control panel or manual instructions PREPARATION [ ] Finish the cycle, wait for unlocking and remove laundry. [ ] Switch off and unplug for hands-on inspection; keep children and pets away. TOOLS - Soft dry cloth MATERIALS - No cleaner until a separate maintenance task is selected FULL CHECKLIST 1. Remove any damp items left in the washer. Wipe moisture from the door glass and inside of the seal. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 37–40, 49 2. Inspect the dispenser for buildup and use the linked drawer-cleaning task if residue is present. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 37–40, 49 3. Inspect the empty drum for deposits and check when Tub Clean was last run. Use the linked empty-cycle task if cleaning is due. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 37–40, 49 4. Allow the drum to dry with the door open only where children and pets cannot enter. Persistent odor or drainage trouble needs further support. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 37–40, 49 STOP CONDITIONS - Smoke, a burning smell, damaged wiring, standing water near power, or an active leak: stop using the appliance. Disconnect power only from a safe, dry location and arrange qualified service. - Stop if a part is damaged, jammed, sharp, inaccessible, or does not match your manual. Do not force parts or remove a cabinet panel. BRANCH CHECKS Begin with: Is the smell musty after laundry is removed? Is the smell musty after laundry is removed? Is the smell musty after laundry is removed? A burning, chemical or gas smell requires stopping use and qualified help. This task is for musty moisture-related odor only. - No musty odor is present -> Next action recorded. The observed condition does not call for further action in this task, or a different task is more appropriate. Keep the observation in your record; do not infer a failed component. - A musty smell remains after unloading -> Continue to: Have damp items and visible door moisture been removed?. - The smell is burning, chemical or otherwise unsafe -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - I have not checked after unloading -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Have damp items and visible door moisture been removed? Have damp items and visible door moisture been removed? Wait for unlocking and motion to stop. Unplug before hands-on inspection, remove damp items and wipe door glass and the inside of the seal. Follow checklist steps: 1 - Laundry removed and accessible moisture wiped -> Continue to: Is residue visible in the dispenser?. - The door is unsafe to open or the seal is damaged -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - Unloading or wiping is pending -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Is residue visible in the dispenser? Is residue visible in the dispenser? Look after power isolation. Note a drawer-cleaning action when buildup is present; do not add cleaners yet. Follow checklist steps: 2 - No dispenser buildup is visible -> Continue to: What do the drum and cleaning history show?. - Buildup is visible; drawer cleaning is noted -> Continue to: What do the drum and cleaning history show?. - I have not inspected the drawer -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. What do the drum and cleaning history show? What do the drum and cleaning history show? Record visible deposits and the last Tub Clean date. Select the relevant separate maintenance task; never mix products. Follow checklist steps: 3 - Drum looks clear and cleaning is current -> Continue to: Is a safe drying and maintenance action recorded?. - Deposits are visible or cleaning is due -> Continue to: Is a safe drying and maintenance action recorded?. - Drum condition or cleaning history is unknown -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Is a safe drying and maintenance action recorded? Is a safe drying and maintenance action recorded? Ventilate only with children and pets kept out. Note the selected Tub Clean, seal or drawer task. Persistent odor or drainage trouble needs support. Follow checklist steps: 4 - Moisture, cleaning need and next action are recorded -> Odor care plan recorded. The moisture and residue observations and next care task are saved. Complete the selected maintenance separately, then observe whether the odor returns. - Odor persists after appropriate completed care or drainage is poor -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - No drying or maintenance action is selected yet -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. RESULT OBSERVATIONS - A moisture or residue source was found and the appropriate maintenance task chosen YOUR RECORD Observation date: ____________________ BEFORE Odor and time damp laundry remained: ____________________ AFTER Moisture, residue and selected next task: ____________________ Additional observations: ____________________ Result / reason for stopping: ____________________ Next action: ____________________ REMINDER Observe after washes and when odor develops; use the separate manufacturer schedules for selected cleaning tasks. Interval: Choose a personal interval; basis: user-selected Source: lg-manual; pp. 37–40, 49 A calendar reminder is a personal plan, not a record of work completed. DIAGRAMS Empty drum, visible deposits and drying observations used to choose appropriate odor maintenance https://csl-13-appliance-repair.pages.dev/diagrams/lg-drum-care.svg Original Homekeep artwork. Conceptual component relationships, not a scale drawing or an installation template. SOURCES LG WM4000H*A / WM4080H*A Owner’s Manual | MFL71728908 Rev.02_051022 | pp. 37–40, 49 https://media.us.lg.com/m/12df7154cf356724/original/WM4080_2023_Owners-Manual_Washer_Eng.pdf#page=49 Checked: 2026-10-13. Copyright LG. Linked reference; original summaries only. No manual illustrations reproduced. LG WM4000HWA product support | Live US model support page | US WM4000HWA identity. Current support listings may contain a newer manual; these steps require MFL71728908 Rev.02_051022. https://www.lg.com/us/support/product/lg-WM4000HWA.ABWEUUS Checked: 2026-10-13. Link only RELATED TASKS Run an empty Tub Clean cycle: https://csl-13-appliance-repair.pages.dev/tasks/lg-tub-clean/ Wash residue from the dispenser drawer: https://csl-13-appliance-repair.pages.dev/tasks/lg-drawer-clean/ Clean buildup around the door seal: https://csl-13-appliance-repair.pages.dev/tasks/lg-door-seal/ Observations do not certify a physical repair. Follow your matching supplied manual and the stop conditions. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-odor/ ======================================================== Wash residue from the dispenser drawer LG WM4000HWA Region: US | Content version: 2.0.0 Remove the drawer and inserts for a warm-water clean without soap. MODEL AND MANUAL Exact model: WM4000HWA Rinse+Spin button with Control Lock marking; Tub Clean cycle. Compare your supplied manual with MFL71728908 Rev.02_051022. Manual: MFL71728908 Rev.02_051022 Excludes: WM3400CW; WM4000HBA; WM4080HWA; WM4000HWA with a different control panel or manual instructions PREPARATION [ ] Turn off and unplug the washer before cleaning. [ ] Empty the detergent drawer and keep the recess dry; do not spray water into the washer. TOOLS - Soft cloth - Small non-metal brush MATERIALS - Warm water FULL CHECKLIST 1. Pull the drawer to its stop. Press its release button and draw it fully out. Stop if the release does not match your manual. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 38–39 2. Lift out the removable inserts. Clean the inserts and drawer with warm water and a soft cloth or brush. Use no soap. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 38–39 3. Use the small non-metal brush to remove residue from the upper and lower recess without spraying water inside. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 38–39 4. Dry the cleaned parts with a towel. Refit the inserts in their original positions and slide the drawer back fully. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 38–39 5. At the next normal wash, check that products dispense and the drawer stays closed. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 38–39 STOP CONDITIONS - Smoke, a burning smell, damaged wiring, standing water near power, or an active leak: stop using the appliance. Disconnect power only from a safe, dry location and arrange qualified service. - Stop if a part is damaged, jammed, sharp, inaccessible, or does not match your manual. Do not force parts or remove a cabinet panel. BRANCH CHECKS Begin with: Is there buildup or is drawer cleaning due? Is there buildup or is drawer cleaning due? Is there buildup or is drawer cleaning due? The manual calls for cleaning once or twice a month. A small amount of clean water left in a compartment can be normal. - No buildup and cleaning is not due -> Next action recorded. The observed condition does not call for further action in this task, or a different task is more appropriate. Keep the observation in your record; do not infer a failed component. - Residue is present or scheduled cleaning is due -> Continue to: Did the unplugged washer drawer release normally?. - I have not checked this yet -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Did the unplugged washer drawer release normally? Did the unplugged washer drawer release normally? Turn off and unplug. Pull to the stop, press the release and remove the drawer. Do not force an unfamiliar or jammed release. Follow checklist steps: 1 - Drawer released and inserts can be removed -> Continue to: Are the inserts, drawer and recess free of accessible residue?. - Release is jammed, damaged or does not match -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - Power isolation or removal is pending -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Are the inserts, drawer and recess free of accessible residue? Are the inserts, drawer and recess free of accessible residue? Wash removable parts in warm water without soap. Use a small non-metal brush in the recess and never spray inside the washer. Follow checklist steps: 2, 3 - Accessible residue is removed and parts are intact -> Continue to: Do the dry inserts and drawer sit in their original positions?. - Parts are damaged or residue is inaccessible -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - Cleaning is incomplete -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Do the dry inserts and drawer sit in their original positions? Do the dry inserts and drawer sit in their original positions? Dry each part and refit it before restoring power. The drawer should slide fully closed. Follow checklist steps: 4 - Inserts seated and drawer closes -> Continue to: How did the drawer dispense on the next normal wash?. - An insert or drawer will not seat -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - I have not refitted the parts -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. How did the drawer dispense on the next normal wash? How did the drawer dispense on the next normal wash? Distinguish a little clean water from product residue or overflow. Stop use for leakage. Follow checklist steps: 5 - Products dispensed without overflow -> Result recorded. You recorded the task result from your own observation. Keep the before and after notes and recheck during normal use. This record does not certify the appliance condition. - Product stays behind or water escapes -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - The next wash is not yet observed -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. RESULT OBSERVATIONS - The drawer slides fully closed and the next wash dispenses normally YOUR RECORD Observation date: ____________________ BEFORE Residue and last drawer-cleaning date: ____________________ AFTER Refitting and next-wash dispensing result: ____________________ Additional observations: ____________________ Result / reason for stopping: ____________________ Next action: ____________________ REMINDER Clean once or twice a month. A 30-day reminder represents the monthly end of that range. Interval: 30 days; basis: manufacturer Source: lg-manual; pp. 38–39 A calendar reminder is a personal plan, not a record of work completed. DIAGRAMS Conceptual removable dispenser inserts and separate main detergent, bleach and softener compartments https://csl-13-appliance-repair.pages.dev/diagrams/lg-drawer-products.svg Original Homekeep artwork. Conceptual component relationships, not a scale drawing or an installation template. SOURCES LG WM4000H*A / WM4080H*A Owner’s Manual | MFL71728908 Rev.02_051022 | pp. 5, 38–39 https://media.us.lg.com/m/12df7154cf356724/original/WM4080_2023_Owners-Manual_Washer_Eng.pdf#page=38 Checked: 2026-10-13. Copyright LG. Linked reference; original summaries only. No manual illustrations reproduced. LG WM4000HWA product support | Live US model support page | US WM4000HWA identity. Current support listings may contain a newer manual; these steps require MFL71728908 Rev.02_051022. https://www.lg.com/us/support/product/lg-WM4000HWA.ABWEUUS Checked: 2026-10-13. Link only RELATED TASKS Run an empty Tub Clean cycle: https://csl-13-appliance-repair.pages.dev/tasks/lg-tub-clean/ Trace a musty washer smell: https://csl-13-appliance-repair.pages.dev/tasks/lg-odor/ Observations do not certify a physical repair. Follow your matching supplied manual and the stop conditions. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-drawer-clean/ ======================================================== Clean buildup around the door seal LG WM4000HWA Region: US | Content version: 2.0.0 Use the manual’s diluted solution with gloves and eye protection; dry the seal afterward. MODEL AND MANUAL Exact model: WM4000HWA Rinse+Spin button with Control Lock marking; Tub Clean cycle. Compare your supplied manual with MFL71728908 Rev.02_051022. Manual: MFL71728908 Rev.02_051022 Excludes: WM3400CW; WM4000HBA; WM4080HWA; WM4000HWA with a different control panel or manual instructions PREPARATION [ ] Switch off and unplug; stop drum motion and allow the washer to cool. [ ] Wear rubber gloves and protective goggles; ventilate the area. [ ] Keep children and pets away. Never mix bleach with ammonia, vinegar, acids or another cleaner. TOOLS - Rubber gloves - Protective goggles - Soft cloth - Measuring vessel MATERIALS - Liquid chlorine bleach - Water - Dry towel FULL CHECKLIST 1. Prepare the manual’s solution: 3/4 cup (177 mL) liquid chlorine bleach in 1 gallon (3.8 L) water. Do not use undiluted bleach. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 37, 39 2. Wet the cloth with the diluted solution and wipe around the door seal. Do not pull the seal out of place. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 37, 39 3. Dry remaining moisture using a separate towel. Stop and request service if the rubber is split or damaged. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 37, 39 4. Leave the door open to let the seal dry completely only if children and pets cannot enter the drum. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 37, 39 STOP CONDITIONS - Smoke, a burning smell, damaged wiring, standing water near power, or an active leak: stop using the appliance. Disconnect power only from a safe, dry location and arrange qualified service. - Stop if a part is damaged, jammed, sharp, inaccessible, or does not match your manual. Do not force parts or remove a cabinet panel. BRANCH CHECKS Begin with: What is visible around the stopped washer door seal? What is visible around the stopped washer door seal? What is visible around the stopped washer door seal? Unplug before hands-on cleaning. Inspect without stretching or lifting the seal out of its fitted position. - Seal is clean and monthly cleaning is not due -> Next action recorded. The observed condition does not call for further action in this task, or a different task is more appropriate. Keep the observation in your record; do not infer a failed component. - Dirt is visible or monthly cleaning is due -> Continue to: Are gloves, eye protection and the correct dilution ready?. - Rubber is torn or displaced -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - I have not checked this yet -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Are gloves, eye protection and the correct dilution ready? Are gloves, eye protection and the correct dilution ready? Use 3/4 cup (177 mL) liquid chlorine bleach in 1 gallon (3.8 L) water. Ventilate. Keep acids, vinegar and ammonia away. Follow checklist steps: 1 - Protection and dilution are confirmed -> Continue to: Could the visible seal be wiped without disturbing it?. - Chemicals were mixed or exposure occurred -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - I have not prepared the solution safely -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Could the visible seal be wiped without disturbing it? Could the visible seal be wiped without disturbing it? Use a soft cloth wet with the diluted solution. Do not pull the rubber out of place. Follow checklist steps: 2 - Accessible seal surfaces were wiped -> Continue to: Has remaining moisture been wiped away?. - Rubber splits, loosens or cannot be reached safely -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - Wiping is still pending -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Has remaining moisture been wiped away? Has remaining moisture been wiped away? Use a separate dry towel, then allow safe drying with children and pets excluded from the drum. Follow checklist steps: 3, 4 - Towel drying is done and safe ventilation is arranged -> Continue to: How does the seal look after drying?. - A visible split or loose area remains -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - The seal has not been dried -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. How does the seal look after drying? How does the seal look after drying? Record surface condition. Persistent staining alone does not prove a failed seal. - Seal is intact and clean to observation -> Result recorded. You recorded the task result from your own observation. Keep the before and after notes and recheck during normal use. This record does not certify the appliance condition. - Staining remains but rubber is intact -> Next action recorded. The observed condition does not call for further action in this task, or a different task is more appropriate. Keep the observation in your record; do not infer a failed component. - Seal appears damaged -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - I have not checked the dry surface -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. RESULT OBSERVATIONS - The seal is clean and dry without visible damage YOUR RECORD Observation date: ____________________ BEFORE Seal buildup or damage before cleaning: ____________________ AFTER Seal surface after drying: ____________________ Additional observations: ____________________ Result / reason for stopping: ____________________ Next action: ____________________ REMINDER Clean monthly; the 30-day reminder approximates a calendar month. Interval: 30 days; basis: manufacturer Source: lg-manual; p. 39 A calendar reminder is a personal plan, not a record of work completed. DIAGRAMS Door glass, fixed rubber seal and garment clearance shown without removing the seal https://csl-13-appliance-repair.pages.dev/diagrams/lg-door-seal.svg Original Homekeep artwork. Conceptual component relationships, not a scale drawing or an installation template. SOURCES LG WM4000H*A / WM4080H*A Owner’s Manual | MFL71728908 Rev.02_051022 | pp. 5, 37, 39 https://media.us.lg.com/m/12df7154cf356724/original/WM4080_2023_Owners-Manual_Washer_Eng.pdf#page=39 Checked: 2026-10-13. Copyright LG. Linked reference; original summaries only. No manual illustrations reproduced. LG WM4000HWA product support | Live US model support page | US WM4000HWA identity. Current support listings may contain a newer manual; these steps require MFL71728908 Rev.02_051022. https://www.lg.com/us/support/product/lg-WM4000HWA.ABWEUUS Checked: 2026-10-13. Link only RELATED TASKS Trace a musty washer smell: https://csl-13-appliance-repair.pages.dev/tasks/lg-odor/ Record external clues after a water leak: https://csl-13-appliance-repair.pages.dev/tasks/lg-leak-check/ Observations do not certify a physical repair. Follow your matching supplied manual and the stop conditions. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-door-seal/ ======================================================== Run an empty Tub Clean cycle LG WM4000HWA Region: US | Content version: 2.0.0 Remove residue with the dedicated cycle and the correct placement for your selected cleaner. MODEL AND MANUAL Exact model: WM4000HWA Rinse+Spin button with Control Lock marking; Tub Clean cycle. Compare your supplied manual with MFL71728908 Rev.02_051022. Manual: MFL71728908 Rev.02_051022 Excludes: WM3400CW; WM4000HBA; WM4080HWA; WM4000HWA with a different control panel or manual instructions PREPARATION [ ] Empty the drum completely. [ ] Read the cleaner label and use only a product intended for washing machines. [ ] Keep children and pets away from the open drum. Never mix bleach with acids or ammonia. TOOLS - Soft dry cloth MATERIALS - One compatible washer cleaner; follow its label dose FULL CHECKLIST 1. With power off, place a cleaning tablet in the empty drum; place a liquid drum cleaner in the main dispenser. Remove the liquid cup before a powdered main-compartment cleaner. Follow the product label. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 31, 37–38 2. Close the drawer and door. Restore power if it was unplugged, select Tub Clean and press Start/Pause. Keep the drum empty throughout. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 31, 37–38 3. Wait for the cycle to finish and motion to stop. Let the drum dry with the door open only where children and pets cannot enter. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 31, 37–38 4. If a descaler or drum cleaner was used, rinse before the next clothes wash: turn on without selecting a cycle, press Rinse+Spin, then Start/Pause. Source: LG WM4000H*A / WM4080H*A Owner’s Manual; pp. 5, 31, 37–38 STOP CONDITIONS - Smoke, a burning smell, damaged wiring, standing water near power, or an active leak: stop using the appliance. Disconnect power only from a safe, dry location and arrange qualified service. - Stop if a part is damaged, jammed, sharp, inaccessible, or does not match your manual. Do not force parts or remove a cabinet panel. BRANCH CHECKS Begin with: Is drum cleaning due or a musty smell present? Is drum cleaning due or a musty smell present? Is drum cleaning due or a musty smell present? tcL is a cleaning reminder. The manual recommends monthly Tub Clean and more often under heavy use. - No current smell and cleaning is not due -> Check the remaining cleaning need. If cleaning is not due, keep your usual reminder. If odor remains after a completed clean, inspect the seal and drawer. The manual describes weekly Tub Clean for three consecutive weeks when mildew or musty odor already exists; seek help if the smell or drainage problem persists. - Cleaning is due, tcL appears or the drum smells musty -> Continue to: Is every garment out of the drum?. - I have not checked this yet -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Is every garment out of the drum? Is every garment out of the drum? Remove all laundry before adding a cleaner. Keep children and pets away from the empty drum; stop for unsafe damage or leakage. - Drum is empty and safe to use -> Continue to: Does the cleaner match its intended compartment?. - Laundry remains in the drum -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. - I have not checked this yet -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Does the cleaner match its intended compartment? Does the cleaner match its intended compartment? Use one compatible product and its label dose. Put tablets in the drum; use the main compartment for a drum cleaner and remove the liquid cup for powder. Never combine products. Follow checklist steps: 1 - Product, dose and placement are confirmed -> Continue to: Did the empty Tub Clean cycle finish?. - Product or compartment does not match -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. - I have not checked the cleaner label -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Did the empty Tub Clean cycle finish? Did the empty Tub Clean cycle finish? Close the drawer and door, select Tub Clean and press Start/Pause. Stop for a leak, unusual burning smell or an error. Follow checklist steps: 2 - The empty cycle finished -> Continue to: Has the required rinse after drum cleaner or descaler finished?. - Cycle failed or an unsafe symptom appeared -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - I have not run it or it is still running -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. Has the required rinse after drum cleaner or descaler finished? Has the required rinse after drum cleaner or descaler finished? Before the next clothes wash, use Power, Rinse+Spin with no wash cycle selected, then Start/Pause. Keep the drum empty. Follow checklist steps: 4 - Rinse+Spin finished -> Continue to: What remains after the drum is rinsed?. - Rinse failed or cleaner residue remains -> Pause and arrange qualified help. Keep the appliance out of use if a safety concern remains. Give the technician the exact model, the visible symptom and any displayed code. Do not open the cabinet or make electrical measurements. - The rinse is still pending -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. What remains after the drum is rinsed? What remains after the drum is rinsed? Wait for motion to stop and let the drum dry only where children and pets cannot enter. Record persistent odor separately from cycle completion. Follow checklist steps: 3 - No visible residue; the drum was checked and left to dry safely -> Result recorded. You recorded the task result from your own observation. Keep the before and after notes and recheck during normal use. This record does not certify the appliance condition. - Musty odor remains after the completed cleaning -> Check the remaining cleaning need. If cleaning is not due, keep your usual reminder. If odor remains after a completed clean, inspect the seal and drawer. The manual describes weekly Tub Clean for three consecutive weeks when mildew or musty odor already exists; seek help if the smell or drainage problem persists. - I have not inspected after rinsing -> Observation still needed. Your notes are saved. The missing observation is not evidence of a fault or a completed action. Complete only the steps you can perform safely, or ask for help. RESULT OBSERVATIONS - The empty cleaning cycle and required rinse finished; residue was checked YOUR RECORD Observation date: ____________________ BEFORE Cleaning trigger and last Tub Clean date: ____________________ AFTER Cleaner, rinse and remaining odor: ____________________ Additional observations: ____________________ Result / reason for stopping: ____________________ Next action: ____________________ REMINDER Monthly Tub Clean; 30 days is a calendar reminder approximation. Heavy use may need more frequent cleaning. Interval: 30 days; basis: manufacturer Source: lg-manual; p. 37 A calendar reminder is a personal plan, not a record of work completed. DIAGRAMS Empty drum for Tub Clean and a separate post-cleaning rinse and drying observation https://csl-13-appliance-repair.pages.dev/diagrams/lg-drum-care.svg Original Homekeep artwork. Conceptual component relationships, not a scale drawing or an installation template. SOURCES LG WM4000H*A / WM4080H*A Owner’s Manual | MFL71728908 Rev.02_051022 | pp. 5, 31, 37–38 https://media.us.lg.com/m/12df7154cf356724/original/WM4080_2023_Owners-Manual_Washer_Eng.pdf#page=37 Checked: 2026-10-13. Copyright LG. Linked reference; original summaries only. No manual illustrations reproduced. LG WM4000HWA product support | Live US model support page | US WM4000HWA identity. Current support listings may contain a newer manual; these steps require MFL71728908 Rev.02_051022. https://www.lg.com/us/support/product/lg-WM4000HWA.ABWEUUS Checked: 2026-10-13. Link only RELATED TASKS Trace a musty washer smell: https://csl-13-appliance-repair.pages.dev/tasks/lg-odor/ Wash residue from the dispenser drawer: https://csl-13-appliance-repair.pages.dev/tasks/lg-drawer-clean/ Observations do not certify a physical repair. Follow your matching supplied manual and the stop conditions. Guide: https://csl-13-appliance-repair.pages.dev/tasks/lg-tub-clean/