LG WM3998 maintenance schedule and special situations.
| Item | Interval | Owner action |
|---|---|---|
| Care after wash | After the cycle is finished | Wipe moisture from the door and seal, dry the cabinet, and leave the door open so the drum can dry. |
| Replace water inlet hoses | every five years | Inspect both hoses for cracks, leaks, and wear and replace them at LG's printed interval. |
| Clean drain pump filter | Periodically | Drain residual water, remove debris from the pump filter and opening, and reinstall the filter securely. |
| Tub Clean | monthly | Run the empty Tub Clean cycle to remove residue and prevent odor. |
| Clean detergent dispenser drawer | once or twice a month | Remove the drawer and inserts, rinse away residue, dry, and reinstall. |
| Clean door seal | once a month | Clean all around the gasket with the diluted solution in the manual, wipe dry, and leave the door open. |
| Item | Interval | Owner action |
|---|---|---|
| Tub Clean odor remedy | once a week for three consecutive weeks | If mildew or a musty odor is already present, run the empty Tub Clean remedy sequence printed by LG. |
| Clean water inlet filters | When fill performance drops, an inlet error appears, or scale blocks the screens, remove, clean, and reinstall both inlet filters. |
ApplianceEdge assessments — lifespans, repair values, and reliability notes — are our editorial opinions, built from documented third-party sources: owner reports, industry pricing data, manufacturer literature, and official records. They describe patterns across a product family, not any individual machine; your experience may differ. Recall information links directly to official CPSC notices. We accept no payment from manufacturers, and no brand influences what we publish.
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