How to Deep Clean a KitchenAid Dishwasher

Do this every 30 days. The KDTE, KDFE and KDTM series share the Whirlpool platform, so the layout below matches whichever you own.

Before you touch the outside of the door: the PrintShield finish resists fingerprints but is destroyed by ordinary stainless cleaners, abrasive pads, and anything with bleach or ammonia. Use a damp microfiber cloth or a cleaner labelled safe for PrintShield.

Both filters, not just the one you can see#

Open the door fully. The cylindrical upper filter sits in the middle of the tub floor — grasp it, rotate a quarter turn counterclockwise, lift it out. Underneath is a flat mesh screen most people never remove. The cylinder catches big debris; the mesh traps the fine particles that matter for Clean Water Wash.

Rinse both under warm water and work the mesh with a soft brush — an old toothbrush is right. Grease collects on the fine screen. For hardened deposits, soak both in warm water with a tablespoon of white vinegar for 15 minutes, then scrub again. Never use a wire brush or scouring pad: it opens the mesh and lets particles recirculate for the rest of the machine's life.

With the filters out, wipe the circular housing and sump well. Look for glass shards, fruit pits and soaked-off jar labels — that debris is the usual reason a drain pump starts grinding.

Spray arms, hole by hole#

The lower arm is held by a centre nut or clip; on most KDTE and KDTM models push down on the hub, rotate counterclockwise and lift straight up. Clear every jet with a toothpick or skewer, one hole at a time, then rinse and shake the arm to flush internal passages. Hard-water households should soak it in undiluted white vinegar for 20 minutes.

Pull the middle rack out. The mid-level arm clips to the back wall or rack support — press the release tabs and slide it off. The upper arm twists off a bayonet mount in the tub ceiling. On models with Dynamic Wash Arms, check the articulating nozzles at the arm tips pivot freely.

Tub, gasket and door edge#

Wipe the walls, inner door and rubber gasket with a damp microfiber cloth, paying attention to the bottom edge of the door where water splashes but never drains. Open the gasket folds and look for trapped food or mould. On FreeFlex third-rack models, run the cloth down the rail channels on both side walls where grease collects.

The top edge of the door and the recesses around the latch and controls collect splashes too. Mild soap on a cloth handles it; a cotton swab reaches between buttons on top-control models. Never spray cleaner directly at the control panel.

The two cycles, in order#

Refit the arms and filters, stand a dishwasher-safe cup of white vinegar on the top rack, and run ProWash or Normal with heated dry on. That drives hot vinegar through passages your hands cannot reach.

When it finishes, sprinkle a cup of baking soda across the empty tub floor and run a short hot rinse. Never combine the two in one cycle — they neutralise each other.

Still not clean?#

Run the kitchen hot tap for 30 seconds before starting so the first fill is genuinely hot, not the cooled water standing in the supply line.

Between deep cleans: rinse the lower filter weekly, run this routine monthly, check spray holes and the gasket every three months, and inspect the water valve inlet screen for sediment every six.

If water never reaches the upper arm after all this, an F8E4 code appears, or water still pools at cycle end, that is a check valve, inlet solenoid or drain pump — not dirt. Book a repair and we will bring the part.