Whirlpool Dishwasher Not Filling With Water — 5 Causes & How to Fix

You hit the start button, hear the dishwasher hum to life, but five minutes later you open it up and the dishes are bone dry. No water came in. You run a quick test cycle and watch through the door — still nothing. Your Whirlpool dishwasher isn't filling, and now you're wondering if you're looking at a weekend repair or a service call that'll cost $300.

Here's the truth: most no-fill issues trace back to five specific failures, and the water inlet valve (part W10327249) is involved in about 60% of them. I'll walk you through each cause in order of likelihood, so you can diagnose this yourself before spending a dime on a technician.

Quick Symptom Check

Before we dig into causes, confirm you're seeing these symptoms:

• Dishwasher runs through cycle but no water enters tub
• You hear normal motor sounds but tub stays dry
• Water supply line is connected and valve under sink is open
• Control panel lights up normally — no error codes
• Previous cycles may have had weak or slow fill before stopping completely

If that matches what you're experiencing, keep reading. We'll start with the most common culprit.

Cause #1: Failed Water Inlet Valve (Most Likely — 60% of Cases)

The W10327249 water inlet valve sits at the bottom left of your dishwasher where the water supply line connects. It's an electrically controlled solenoid valve — when the dishwasher calls for water, it sends 120V to the valve coils, which open and let water flow in.

Why it fails: Hard water deposits build up inside the valve body over time, blocking the small screen filter or preventing the valve from opening fully. The solenoid coils can also burn out after 8-10 years of use. If you've got hard water in your area, expect this valve to last 6-8 years max.

How to diagnose:

1. Unplug the dishwasher and turn off water supply under the sink
2. Pull dishwasher forward and locate the inlet valve at bottom left
3. Disconnect the water line (have a towel ready — some water will spill)
4. Check the small screen filter inside the valve inlet for debris or mineral buildup
5. Use a multimeter to test the solenoid coils — you should get 500-1500 ohms resistance
6. If you get infinite resistance or the screen is clogged solid, the valve's done

The fix: Replace the W10327249 valve. It's a 15-minute job with basic tools. One installation note: you may need to remove the white plug connector that comes with the new valve — some Whirlpool dishwasher models from 2015-2020 use a different wiring connector style, and the existing wires will connect directly to the valve terminals without that plug. Don't force it if the connectors don't match — just remove the white plug and connect your wires.

Cost: $52.99 for the valve + 20 minutes of your time

Cause #2: Clogged or Kinked Water Supply Line (20% of Cases)

Sometimes the problem isn't the valve at all — it's what's feeding the valve. The braided stainless supply line under your sink can develop internal kinks, or the compression fitting at either end can get debris lodged inside.

How to diagnose:

1. Turn off the dishwasher mid-cycle when it should be filling
2. Go under the sink and disconnect the supply line from the shutoff valve
3. Point the line into a bucket and have someone turn the shutoff valve on
4. You should get strong water flow — if it's weak or dribbling, the line is blocked
5. Also check for any sharp bends or kinks in the line behind the dishwasher

The fix: Replace the supply line. They're $12-15 at any hardware store. Get a braided stainless line that's at least 6 feet long so you have room to pull the dishwasher out for future repairs.

Cause #3: Faulty Door Latch or Door Switch (10% of Cases)

Your Maytag or Whirlpool dishwasher won't fill if it thinks the door is open. There's a safety interlock that prevents operation when the door latch isn't fully engaged. If that switch fails, the control board never sends the fill signal.

How to diagnose:

• Close the door firmly and listen for a solid click
• Start a cycle and check if the control panel lights respond normally
• If the lights flicker or the cycle won't start at all, suspect the door switch
• Test the door latch switch with a multimeter — it should show continuity when engaged

The fix: Replace the door latch assembly. It's usually a $40-60 part and takes about 30 minutes to swap out.

Cause #4: Failed Water Level Float or Pressure Switch (7% of Cases)

At the bottom of the tub, there's a small float that rises with the water level. When water reaches the correct level, a pressure switch tells the control board to stop filling. If this switch fails in the "full" position, the board thinks the tub is already full and won't open the inlet valve.

How to diagnose:

1. Remove the lower dish rack and feel around the sump area for the float
2. Make sure it moves freely up and down — it shouldn't be stuck
3. Check the air tube connected to the pressure switch for cracks or blockages
4. Test the pressure switch for continuity in both empty and simulated-full positions

The fix: Clean the float and air tube first. If the pressure switch itself is faulty, replace it ($25-35 part).

Cause #5: Control Board Relay Failure (3% of Cases)

This is the least common cause, but I'm including it because when it happens, techs often misdiagnose it as a bad valve. The control board has a relay that switches power to the inlet valve. If that relay is stuck open or the trace is burnt, the valve never gets voltage.

How to diagnose:

1. Start a fill cycle and use a multimeter to check for 120V at the valve terminals
2. If the valve tests good but you're not getting voltage, the board's the problem
3. Look for visible burn marks or blown capacitors on the control board

The fix: Control board replacement. This is the expensive option ($200-300 for the part), which is why we test everything else first.

When to Call a Pro

You can handle the inlet valve, supply line, and door latch repairs yourself with basic tools and some patience. But if you've tested the valve and confirmed it's getting proper voltage but still not opening, or if you're seeing burnt components on the control board, that's when I'd call in a technician. Control board diagnosis gets tricky, and you don't want to replace a $300 part based on a guess.

Also, if you're dealing with a dishwasher that's 12+ years old and you're facing a control board replacement, run the numbers. A new dishwasher might make more financial sense than a $400 repair on an appliance that's already past its life expectancy.

Frequently Asked Questions

Will a dishwasher fill if the inlet valve is partially clogged?

Yes, but slowly. You'll notice cycles taking much longer than normal, and the dishes might not get fully clean because there's not enough water pressure for the spray arms. A fully clogged valve means zero water flow — the dishwasher will run through its cycle dry and leave you with dirty dishes and dried detergent stuck in the dispenser.

Can I clean the W10327249 inlet valve instead of replacing it?

You can try removing the small screen filter and cleaning it with vinegar and a soft brush, but if the internal solenoid coils are weak or the valve body is scaled up with minerals, cleaning won't help. I've seen people waste hours trying to resurrect old valves. For $52.99 and 15 minutes of work, replacement is the smarter move — you're buying peace of mind that the problem's actually fixed.

Do I need to remove the white connector plug on the new valve?

On some Whirlpool, KitchenAid, Maytag, and Kenmore models — particularly those manufactured between 2015-2020 — the dishwasher wiring uses a different connector style. The W10327249 valve comes with a white plug connector, but your dishwasher wires might connect directly to the valve terminals without needing that plug. If the connectors don't match when you're installing, just remove the white plug and attach your wires directly. Don't force incompatible connectors together.