How to Deep Clean a Samsung Dishwasher

Samsung does not use a self-cleaning filter the way Bosch does, so this is manual maintenance, not optional housekeeping. Skip it and food builds up until drainage suffers and the machine throws 3E. This covers the DW80 and DW60 series.

A second reason to keep on top of it: the leak sensor in the base tray under the machine uses a styrofoam float to detect water. Grease and residue promote condensation that drips into the tray, lifts the float and shuts the machine down mid-cycle with nothing actually leaking.

The two-part filter#

Slide the lower rack out. In the centre of the tub floor is a cylindrical filter assembly with a handle carrying a small arrow for the unlock direction. Rotate counterclockwise about a quarter turn and lift it straight up — you will feel the rubber gasket at its base let go. The coarse outer cylinder then separates from the fine inner filter, so treat them as two pieces.

Hold the coarse mesh under warm running water and brush both surfaces top to bottom. Debris collects in the lower third where the mesh meets the plastic frame. Greasy build-up comes off after ten minutes in warm water with two tablespoons of white vinegar. Never take a wire brush or abrasive pad to a Samsung filter — the mesh is thinner than commercial-grade equivalents and tears.

The fine filter takes gentle circular strokes with the same brush, and chalky scale lifts after fifteen minutes in undiluted vinegar. Hold it up against a light: any tear means replace it, because a damaged fine filter passes food into the drain pump (part DD31-00005A) and burns out its motor.

Sump, arms and nozzles#

Look into the sump cavity with the filter out. Wipe around the opening and pick out food, glass fragments or debris with needle-nose pliers. Check the gasket that seals filter to sump for cracks and that it sits flat in its groove.

The lower spray arm twists off counterclockwise; the upper is held by a twist-lock nut. Clear each spray hole with a wooden toothpick or bamboo skewer — never a metal pin, which enlarges the hole and drops your water pressure permanently. Rinse both arms and shake the trapped debris out of the hollow interiors.

If your machine has Zone Booster, that concentrated spray section aimed at heavily soiled items uses nozzles smaller than ordinary spray holes, and they clog fast in hard water. Find the nozzle panel on the rear tub wall or in the lower spray arm assembly and clear each one. Heavy scale gets a vinegar soak.

Gasket, then the two cycles#

Wipe the perimeter gasket with a damp cloth and a little dish soap, easing it away from the frame to reach behind it — the bottom corners are where water pools and mould starts. Wipe the door edges too.

Rebuild the filter — fine mesh first, coarse on top, insert and rotate clockwise until it locks. Stand a cup holding two cups of white vinegar on the top rack and run the hottest cycle you have, usually Sanitize or Heavy, with no dishes or detergent.

When that finishes, sprinkle a cup of baking soda over the tub floor and run Express or Quick. Samsung uses a thinner-gauge stainless tub than premium brands, so keep abrasive cleaners away — scratches become the places residue collects.

The base tray check#

If it has been stopping mid-cycle or reporting leaks that are not there, take the two Phillips screws out of the lower kick plate, slide it forward and look at the base tray. Soak up any water or condensation, dry it completely and refit.

Wipe the exterior with a barely damp microfiber cloth, with the grain on stainless, and never spray anything at the touchpad control panel (part DD97-00474A) — it does not tolerate moisture.

Schedule: filter every two to four weeks, spray arms monthly, Zone Booster nozzles monthly in hard water, full vinegar clean monthly, gasket weekly, base tray every six months.

If 3E persists, if the circulation pump grinds, or if water pools on the floor in front of the machine, book a repair.