Dishwasher Won't Fill With Water

Quick answer

Check the water supply valve and ensure it's fully open. Inspect the inlet filter for clogs and clean it if necessary. Test the float switch to ensure it's not stuck in the raised position.

Confirm the symptom

• Dishes remain dirty after a cycle
• No water entering the dishwasher during the fill cycle
• Dishwasher runs but doesn't spray water
• You hear the motor running but no water sounds
• Dishwasher completes cycle quickly without filling

Tools and prep

• Screwdriver set
• Adjustable wrench
• Flashlight
• Bucket (for water catchment)
• Replacement inlet filter (if needed)
• Turn off power at the circuit breaker
• Shut off water supply to the dishwasher

Step-by-step troubleshooting

1. Check Water Supply Valve
   Do: Locate the water supply valve under the sink or near the dishwasher and ensure it's fully open.
   Observe: Valve is open and water flows freely.
   Means: Water supply is active.
   Next: Proceed to Step 2.
2. Inspect Inlet Filter
   Do: Remove the inlet filter from the water supply line and check for debris or mineral buildup.
   Observe: Filter is clogged with sediment or scale.
   Means: Clogged filter is restricting water flow.
   Next: Clean or replace the filter.
3. Test Float Switch
   Do: Open the dishwasher and locate the float switch near the bottom of the tub. Gently lift and lower it to check for smooth movement.
   Observe: Float switch is stuck in the raised position.
   Means: Stuck float switch is preventing water intake.
   Next: Clean around the float switch or replace it if damaged.
4. Check Inlet Valve
   Do: Use a multimeter to test the inlet valve for continuity. If no continuity, the valve is faulty.
   Observe: Inlet valve shows no continuity.
   Means: Inlet valve is defective and needs replacement.
   Next: Replace the inlet valve.
5. Inspect Water Supply Line
   Do: Check the flexible water supply line for kinks, cracks, or blockages.
   Observe: Supply line is kinked or damaged.
   Means: Physical obstruction in the line is restricting water flow.
   Next: Straighten or replace the supply line.
6. Verify Dishwasher Door Seal
   Do: Ensure the dishwasher door is fully closed and the door seal is intact and not damaged.
   Observe: Door is not latching properly or the seal is damaged.
   Means: Improper door closure can prevent the fill cycle from starting.
   Next: Adjust or replace the door seal.

Common causes

Parts matching

Common parts needed for a dishwasher that won't fill with water:

• Inlet Filter
• Float Switch
• Inlet Valve
• Supply Line
• Door Seal
• Pressure Regulator

Purchase OEM parts for compatibility and reliability.

When to call a professional

• You're unable to locate or access the inlet valve or float switch.
• Testing shows the inlet valve has no continuity but you're unsure how to replace it.
• The water supply line is damaged beyond simple repair.
• Low water pressure persists after checking the main supply.
• You're not comfortable working with electrical components or water lines.

FAQ

Related guides

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