LG LDFN4542S how to change the rinse aid setting

Raise it for spots, streaks, calcium build-up or poor drying; lower it if the dishwasher foams.

Steps

1. Make sure the dishwasher is off.
2. Press Dual Zone and Power together. The display shows the current level.
3. Press Delay Start to step through L0 to L4.
4. Press Start to save the level.

Source: Rinse Aid Dispenser Adjustment Source: Rinse Aid Dispenser Adjustment, p. 31

Used for

• Spots, streaks or poor drying
• Foam in the tub or poor washing

Other LDFN4542S procedures

• How to clean the filtersAfter each load for best results. With hard water, at least once a month with a soft brush. Also when OE appears or water drains poorly.
• How to clean the spray armsEvery two weeks, and when dishes come out dirty because spray holes are blocked.
• How to run Machine CleanOnce a month or every 30 cycles, when the Machine Clean icon flashes, or after a long period unused (then without any cleaning agent).
• How to clean the air gapWhen the dishwasher drains poorly or shows OE, if the sink has a drain air gap.

Sources

1. Owner's Manual, Dishwasher LDF554 and LDFN454 models (abridged edition). LG Electronics Inc. Document MFL69261755, revision Rev.00, 2023-09-04, 48 pages, en-US. gscs-b2c.lge.com. Listed on the manufacturer's support page. Retrieved 13 November 2026.

Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.

Applies to

LDFN4542S (variant LDFN4542S.ASSESNA), LDFN4542W (variant LDFN4542W.ABWESNA), LDFN4542B (variant LDFN4542B.ABPESNA), LDFN4542D (variant LDFN4542D.ABDESNA). United States and Canada.

Source

Owner's Manual, Dishwasher LDF554 and LDFN454 models (abridged edition), MFL69261755 revision Rev.00, 2023-09-04

Last verified

13 November 2026

Handbook

LG LDFN4542S dishwasher in Dishwashers; all LG handbooks