KitchenAid Dishwasher Won’t Fill — Causes & Fix

When a KitchenAid [dishwasher](/blog/repair-or-replace-dishwasher) runs its cycle but no water enters, the fault sits somewhere along one short path: household hot supply, shutoff valve, supply line, inlet valve (W10872255), and finally the tub. The inlet valve itself is the most common failure, but a float stuck up or a kinked line will do the same thing, so a quick listen tells you where to look.

The 30-Second Listen Test#

Start a cycle, put your ear to the lower front of the dishwasher, and listen for two things — a click as the board's relay energizes the inlet-valve solenoid, then water flowing within a few seconds:

• No click at all: the board is not sending the fill command, or the board has no power.
• Click but no water: the valve is energizing but is clogged, or the supply is off or too low on pressure.
• Click and water: the valve works — look for a leak before the tub, at the connections behind the toe plate.

Causes Ranked by Frequency#

1. Inlet valve failure — W10872255 (40%)#

The solenoid inlet valve opens on the board's command, and it fails two ways: a burned-out coil that cannot open electrically, or a mineral-clogged screen or diaphragm that stays shut even when powered. Disconnect power, drop the toe plate, and measure across the solenoid terminals — 500-1500 ohms is normal, while an infinite (OL) reading means the coil is open and the valve is replaced. Check the fine inlet screen where the supply line connects, too; scale there chokes flow without any electrical fault.

2. Float switch stuck up (25%)#

The float on the tub floor tells the board the water level, and if it sticks in the raised position — from a detergent cake, debris, or a fallen utensil trapping it — the board reads "full" and never commands a fill. Open the door, find the float dome at the front-left, and press it: it should drop and spring back freely. Clean around its base if it binds.

3. Supply line restriction (18%)#

The braided line between the shutoff and the inlet valve can kink where the machine was pushed back into place, or its rubber lining can collapse internally while looking fine outside. Disconnect the line at the valve, hold it over a bucket, and briefly open the shutoff — a healthy line pours freely, while a trickle means it is kinked or collapsed and should be replaced.

4. Control-board fill relay — W11413276 (12%)#

The relay that powers the inlet valve can fail open, so no current reaches a valve that otherwise tests good. Confirm it in diagnostic mode: advance to the fill test and measure at the inlet-valve connector — it should read 120V AC, and 0V means the board relay has failed.

5. Supply valve partly closed or corroded (5%)#

An old under-sink gate valve can seize partly closed and pass only a trickle, or a quarter-turn ball valve can corrode so it never opens fully. Cycle it fully closed and open a few times to break any corrosion; if it still restricts flow, it is a plumbing replacement, not a [dishwasher repair](/blog/complete-guide-dishwasher-repair).

KitchenAid Notes#

The W10872255 valve is shared with equivalent Whirlpool models, so it is easy to source. KitchenAid specifies at least 20 PSI at the valve — homes on a well or a low-set pressure-reducing valve can fall below that. On ProWash models a no-fill throws no special code; the board simply times out, so check diagnostic memory for a generic fill-timeout rather than an error.

KitchenAid dishwasher still dry after the click test? Our technicians carry the valve and board on the truck and fix it same-day across [Sacramento](/sacramento/sacramento) and the Bay Area. Schedule your repair.