LG WM4000HWA · User maintenance
Review inlet hose condition and age
Record visible wear and installation age, then decide whether to retain, investigate or replace the inlet hoses.
01 / Match your appliance
Confirm your model and manual
Rinse+Spin button with Control Lock marking; Tub Clean cycle. Compare your supplied manual with MFL71728908 Rev.02_051022.
Covered manual: MFL71728908 Rev.02_051022. Excludes WM3400CW; WM4000HBA; WM4080HWA; WM4000HWA with a different control panel or manual instructions.
02 / Get ready
Preparation
Confirm each item before you follow the guided checks.
Tools
- Flashlight, optional
Materials
- Installation or replacement record, if available
03 / Follow what you observe
Your next check
Confirm your model, panel, manual and preparation to begin.
The full checklist
Read the sequence before starting. Follow each step only when its preparation and branch conditions are met.
Record when the hot and cold inlet hoses were installed or last replaced. Use an installation receipt or service record; mark the age unknown if none is available.
Source: LG WM4000H*A / WM4080H*A Owner’s Manual · pp. 4–6, 12–13With the washer off, visually inspect the reachable hose lengths and couplings for cracks, leakage and wear. Do not bend or loosen a hose to inspect it.
Source: LG WM4000H*A / WM4080H*A Owner’s Manual · pp. 4–6, 12–13Look for pinching, crushing or tight bends where the visible hoses approach the washer. Arrange an installer for inaccessible routing rather than moving the machine.
Source: LG WM4000H*A / WM4080H*A Owner’s Manual · pp. 4–6, 12–13The manual specifies replacement every five years, with earlier replacement when wear or leakage is present. Record a replacement action for hoses at that age or older; unknown age requires checking records or asking an installer.
Source: LG WM4000H*A / WM4080H*A Owner’s Manual · pp. 4–6, 12–13Give the installer the observed condition and age evidence. Have suitable new hoses and the connections checked according to the installation manual; do not reuse old hoses for a new installation.
Source: LG WM4000H*A / WM4080H*A Owner’s Manual · pp. 4–6, 12–13
When to stop
- 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.
Every check and possible next step
Start at “Is there reliable evidence of the inlet hose age?”. Choose only what you observed. An unobserved condition is its own answer.
Is there reliable evidence of the inlet hose age?
Is there reliable evidence of the inlet hose age?
Use an installation or replacement record, not the washer purchase date unless it also establishes when these hoses were fitted.
Steps for this check: 1.
- Installation or replacement date is documented
Continue to Do accessible hose surfaces and couplings look intact and dry?. - No reliable age evidence is available
Establish hose age — Check installation records or ask the installer. Unknown age does not prove a failed hose, but it cannot establish that the five-year replacement point is still in the future. - I have not looked for the record
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.
LG WM4000H*A / WM4080H*A Owner’s Manual · p. 12
Do accessible hose surfaces and couplings look intact and dry?
Do accessible hose surfaces and couplings look intact and dry?
Observe the reachable portions with the washer off. Do not undo a fitting, bend a hose or move the appliance.
Steps for this check: 2.
- Visible surfaces are dry with no wear or cracks
Continue to Are the visible hoses free of crushing, pinching and tight kinks?. - Cracks, wear or leakage are visible
Continue to Is the replacement or routing assessment ready for an installer?. - The surfaces cannot be seen 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.
LG WM4000H*A / WM4080H*A Owner’s Manual · p. 12
Are the visible hoses free of crushing, pinching and tight kinks?
Are the visible hoses free of crushing, pinching and tight kinks?
Leave inaccessible routing to an installer. A visible problem is grounds for assessment, not a reason to pull the machine out.
Steps for this check: 3.
- Visible route is clear
Continue to Are the documented hoses younger than five years?. - A kink, pinch or crushed area is visible
Continue to Is the replacement or routing assessment ready for an installer?. - The route has not been 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.
LG WM4000H*A / WM4080H*A Owner’s Manual · pp. 12–13
Are the documented hoses younger than five years?
Are the documented hoses younger than five years?
The manual says to replace inlet hoses every five years and check periodically for wear and leaks. Visual appearance does not extend that replacement interval.
Steps for this check: 4.
- Under five years and no visible concern was found
Visible hose review recorded — The documented hose age is under five years and the reachable portions showed no concern. Keep periodic checks and plan replacement from the actual installation date; hidden sections were not inspected. - Five years old or older
Continue to Is the replacement or routing assessment ready for an installer?. - I have not compared the documented dates
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.
LG WM4000H*A / WM4080H*A Owner’s Manual · p. 12
Is the replacement or routing assessment ready for an installer?
Is the replacement or routing assessment ready for an installer?
Record age and visible condition. Keep the washer out of use for leakage or damaged hoses; isolate water and power only from a dry safe position.
Steps for this check: 5.
- Observed concern is recorded for qualified help
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. - Water is active or isolation is 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. - The handoff note is not prepared
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.
LG WM4000H*A / WM4080H*A Owner’s Manual · pp. 4–6, 12–13
Possible results
Visible hose review recorded
The documented hose age is under five years and the reachable portions showed no concern. Keep periodic checks and plan replacement from the actual installation date; hidden sections were not inspected.
Establish hose age
Check installation records or ask the installer. Unknown age does not prove a failed hose, but it cannot establish that the five-year replacement point is still in the future.
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.
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.
Check the result
- The accessible condition and age evidence are recorded with a clear retain, investigate or replacement action.
A record you can return to
Your observations
Record what you saw before and after. Leave a field blank when you have not checked it. These entries stay in this browser.
Current result
No result recorded.
Summary to share with support
Review this summary before sharing it. A saved observation does not confirm a physical repair.
No observations recorded yet. Complete the checks or add the information you can safely observe.
Previous records on this browser
- No previous records saved.
Plan the next reminder
Inspect periodically; replace inlet hoses every five years. Use the documented installation date, not this inspection date, to plan replacement.
LG WM4000H*A / WM4080H*A Owner’s Manual · p. 12
No fixed manufacturer interval is supplied for this task. Choose a personal review interval if useful. A calendar reminder is a personal plan; it does not mark any work as completed.
Sources and fit
- LG WM4000H*A / WM4080H*A Owner’s Manual — MFL71728908 Rev.02_051022, pp. 4–6, 12–13
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.
Checked 2026-10-13. Link only
This independent checklist summarizes the listed references. Use your appliance’s supplied manual if it differs.