How to Replace a Whirlpool Dishwasher Water Inlet Valve (W10872255)

The water inlet valve controls the flow of hot water into your Whirlpool dishwasher. When it fails, the dishwasher either will not fill at all (triggering F6E1 error — water inlet failure) or fills continuously and overflows (triggering the flood sensor). The valve is an electrically-operated solenoid that opens when the control board sends 120V during the fill phase. A failed solenoid coil, stuck plunger, or clogged inlet screen are all common failure modes.

This is one of the more accessible repairs on a Whirlpool dishwasher — the valve is located behind the lower kick plate and can be replaced without pulling the unit out from under the counter.

Before You Start

• Tools needed: 1/4" hex nut driver, adjustable wrench or channel-lock pliers, Torx T20 driver (if removing countertop screws), needle-nose pliers, multimeter, towels
• Parts needed: Water inlet valve W10872255 (~$30-$55)
• Time required: 25-35 minutes
• Difficulty: Intermediate
• Safety warning: Disconnect power at the circuit breaker AND turn off the water supply valve under the sink. There will be residual water in the supply line — have towels ready.

Step-by-Step Instructions

Step 1: Confirm the Inlet Valve Is the Problem

Before ordering a new valve, confirm the failure:

• F6E1 error code: Specifically indicates the fill function failed. But first verify the supply valve under the sink is actually open and the supply line is not kinked.
• No water entering at all: Listen for a click at the start of a fill — the click is the valve solenoid activating. No click = no signal from board or dead solenoid. Click but no water = stuck plunger or clogged screen.
• Water fills slowly then times out: Likely a clogged inlet screen (debris from supply line). This can be cleaned rather than replacing the valve.

Step 2: Disconnect Power and Water Supply

Turn off the circuit breaker for the dishwasher. Under the sink, close the hot water supply valve clockwise until fully shut. If the valve handle is difficult to turn, use pliers but do not force — a broken shut-off valve creates a much bigger problem. Once closed, open a hot water faucet nearby to release line pressure.

Step 3: Remove the Lower Access Panel

Remove the two 1/4" hex head screws at each end of the kick plate. The panel drops forward and out. The inlet valve is visible at the bottom-left of the dishwasher — it has the braided steel supply line connected to one end and a rubber fill hose going up to the tub on the other end.

Step 4: Disconnect the Water Supply Line from the Valve

Using an adjustable wrench, loosen the compression nut where the braided supply line connects to the valve inlet. Have a towel underneath — residual water will drain out when you fully disconnect the line. Set the disconnected line in a pan or wrap it with a towel.

Step 5: Disconnect the Electrical Connector

The inlet valve solenoid has a 2-pin electrical connector (some models have a single spade terminal pair). Press the locking tab and pull the connector straight off. Do not pull by the wires.

Optional diagnostic step: With the connector removed, test the solenoid coil resistance. Set multimeter to ohms and touch the probes to the two valve terminals. A good solenoid reads between 500-1500 ohms. Open circuit (OL) = burned coil, confirmed failure.

Step 6: Disconnect the Fill Hose from the Valve Outlet

The rubber fill hose connects to the valve outlet (top) with a spring clamp. Use pliers to squeeze the spring clamp and slide it back along the hose. Pull the hose off the valve outlet nipple. Some water may drain from this hose — it connects to the tub above.

Step 7: Remove the Valve Mounting Hardware

The inlet valve is secured to the dishwasher frame by a single mounting screw (Torx T20 or Phillips, depending on model year) or a bracket clip. Remove the screw and the valve slides out. Note the orientation — the inlet port faces outward toward the supply line, the outlet port faces upward toward the tub.

Step 8: Check and Clean the Inlet Screen (Before Discarding Old Valve)

Before installing the new valve, inspect the old valve's inlet screen — a small mesh filter inside the inlet port where the supply line connects. If it is clogged with sediment, rust, or mineral debris, this may have caused the failure (restricted flow trips the fill timeout). The NEW valve will also have a fresh screen, but if your supply water is very dirty, the new screen will clog quickly too — consider installing an inline water filter on the supply line.

Step 9: Install the New Inlet Valve (W10872255)

Position the new valve with the inlet port facing outward and the outlet port facing up (same as the original):

1. Secure with the mounting screw — snug only
2. Connect the rubber fill hose to the outlet nipple and slide the spring clamp over the connection
3. Connect the electrical connector until it clicks
4. Thread the braided supply line onto the inlet port fitting — hand-tight plus 1/4 turn with a wrench. Do not use thread tape on compression fittings — it is not needed and can cause leaks on these fittings.

Step 10: Turn On Water and Check for Leaks (Before Restoring Power)

Open the supply valve under the sink slowly. Watch the new valve connections for 60 seconds:

• Check the supply line connection for drips
• Check the fill hose clamp for drips
• If any connection leaks, tighten slightly (1/8 turn at a time)

Do not restore power yet — you want to confirm no leaks under water pressure before energizing the valve.

Step 11: Restore Power and Test Operation

Replace the kick plate. Turn the breaker back on. Run a short cycle (rinse only works well for testing). Listen for:

1. Valve click at cycle start (solenoid activating)
2. Hissing/rushing sound of water flowing into the tub (audible from the kick plate area)
3. Water stops flowing after 2-3 minutes (tub reaches fill level)
4. No F6E1 error code appears

If the F6E1 was stored in memory, clear it via diagnostic mode (Heated Dry, Normal, Heated Dry within 4 seconds, then hold Start for 3 seconds to clear codes).

Troubleshooting After Replacement

• New valve clicks but no water flows: The supply valve under the sink is not fully open, or the supply line has a kink. Also check that the new valve's shipping plug (some come with a plastic cap on the inlet) has been removed.
• F6E4 appears instead of F6E1: F6E4 means the flow meter detects no water despite the valve opening. Check the fill hose for kinks between the valve and the tub. Also verify the supply pressure — extremely low household water pressure can trigger this.
• Valve leaks from the body (not connections): The new valve may be defective. A crack in the plastic body = DOA part, return for exchange.
• Dishwasher fills and keeps filling: The valve is stuck open. This is rare with a new valve — check that the electrical connector is correct and the control board is not sending continuous voltage.

When to Call a Professional

• The supply shut-off valve under the sink is seized and you cannot stop water flow
• The F6E1 error returns with a new valve — the control board may not be sending the fill signal (board relay issue)
• You notice the supply line fitting on the dishwasher side is corroded or stripped — the old valve may have been forced on incorrectly by a previous installer
• There is a flood situation (continuous filling) that you cannot stop by closing the supply valve

Cost Comparison: DIY vs Professional

Need Professional Help?

• Dishwasher repair service
• Whirlpool appliance repair
• Dishwasher repair cost guide

FAQ

Q: Can I clean the inlet valve screen instead of replacing the whole valve? A: If the ONLY problem is slow filling (not a complete no-fill), yes. Turn off water and power, disconnect the supply line from the valve inlet, and remove the small mesh screen with needle-nose pliers. Soak in vinegar for 15 minutes and rinse. However, if the solenoid coil has failed (no click when cycle starts), cleaning the screen will not help — the valve needs replacement.

Q: Why does Whirlpool use part number W10872255 when my old valve has a different number? A: Whirlpool frequently supersedes part numbers when they update a component. W10872255 replaces several older valve part numbers. When ordering, search by your model number to get the current correct part — the supplier will automatically show the current superseding number.

Q: The dishwasher fills fine but takes longer than it used to. Is the valve failing? A: Probably not failing yet, but the inlet screen is partially clogged. This is the early warning sign that precedes complete failure. Clean the screen now (see FAQ above) to prevent a full failure later. Also check your home's water pressure — below 20 PSI, dishwashers struggle to fill within the normal timeout window.

Q: Can a leaking inlet valve cause water damage under the dishwasher? A: Yes. A valve that does not fully close (partially stuck open) can allow water to slowly seep into the tub when the dishwasher is off. The tub eventually overflows into the sump, which overflows onto the floor. If you notice water under your dishwasher when it has not been running, the inlet valve is the first suspect.

---

Need a certified technician? Book same-day repair →