Dishwasher Won't Wash Dishes

Quick answer

Ensure the dishwasher is receiving water, check for clogged filters and spray arms, and verify proper loading. If water is present but dishes remain dirty, inspect the detergent dispenser and heating element.

Confirm the symptom

• Dishes remain dirty after a full cycle
• Water does not fill the dishwasher during operation
• Spray arms do not rotate or spray water
• Detergent does not dissolve properly
• Dishes are wet but still have food particles

Tools and prep

• Screwdriver set
• Plumber's wrench
• Flashlight
• Replacement detergent
• Clean cloth or sponge
• Turn off power at circuit breaker
• Shut off water supply to dishwasher

Step-by-step troubleshooting

1. Check Water Supply
   Do: Verify the water valve under the sink is fully open.
   Observe: Water should flow freely from the inlet valve.
   Means: A closed valve prevents water from entering the dishwasher.
   Next: If no water flows, check for a clogged inlet filter or faulty valve.
2. Inspect Spray Arms
   Do: Remove and examine spray arms for clogs.
   Observe: Water should spray evenly when arms are manually turned.
   Means: Clogged spray arms prevent proper water distribution.
   Next: Clean or replace clogged spray arms.
3. Clean Filters
   Do: Locate and remove the dishwasher filter at the bottom of the tub.
   Observe: Filter should be free of food particles and debris.
   Means: A clogged filter restricts water flow and cleaning efficiency.
   Next: Rinse the filter thoroughly and reinstall.
4. Test Detergent Dispenser
   Do: Open the detergent compartment and ensure it is not clogged.
   Observe: Detergent should dissolve freely during the wash cycle.
   Means: A clogged dispenser prevents proper detergent use.
   Next: Clean the dispenser or try a different detergent type.
5. Check Heating Element
   Do: Visually inspect the heating element at the bottom of the tub for damage.
   Observe: The element should glow during the rinse cycle.
   Means: A faulty heating element can prevent proper water temperature.
   Next: Test the element with a multimeter or consult a professional.
6. Verify Dishwasher Leveling
   Do: Ensure the dishwasher is level on the floor.
   Observe: Uneven leveling can prevent proper door closure and water flow.
   Means: Improper leveling affects spray arm rotation and cleaning.
   Next: Adjust the leveling feet as needed.

Common causes

Parts matching

Replace parts that match your dishwasher's model and symptoms.

• Inlet Valve Filter – if water doesn't enter the dishwasher
• Spray Arm – if water isn't spraying evenly
• Dishwasher Filter – if dishes are still dirty after cleaning
• Detergent Dispenser – if detergent doesn't dissolve properly
• Heating Element – if dishes remain wet and cold after a cycle
• Leveling Feet – if the dishwasher is unbalanced

Check your dishwasher's manual for exact part numbers and compatibility.

When to call a professional

• If water doesn't enter the dishwasher after checking the inlet valve and filter
• If the heating element is visibly damaged or not functioning
• If the dishwasher still won't clean dishes after replacing all accessible parts
• If you're unsure about electrical testing or part installation

FAQ

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