KitchenAid Superba Dishwasher Making Noise

Quick answer

If your KitchenAid Superba dishwasher is making noise, first unplug it and check for loose items or a clogged filter. If the noise continues, inspect the pump or motor for issues.

Confirm the symptom

• Loud humming or grinding noise during operation
• Noise only occurs during the wash or drain cycle
• Noise is consistent and not related to water flow

Tools and prep

• Screwdriver set
• Flashlight
• Rubber gloves
• Plastic container for water collection
• Turn off power at the circuit breaker
• Turn off water supply to the dishwasher

Step-by-step troubleshooting

1. Unplug and Inspect
   Do: Unplug the dishwasher and remove the lower rack. Check for loose items or debris in the bottom of the dishwasher.
   Observe: Look for any loose parts or obstructions in the spray arms or filter area.
   Means: Loose items or debris can cause unusual noises during operation.
   Next: If you find debris, clean it out and test the dishwasher again.
2. Check the Filter
   Do: Locate the filter at the bottom of the dishwasher and remove it. Clean it thoroughly with warm water and a brush.
   Observe: A dirty or clogged filter can restrict water flow and cause noise.
   Means: A clogged filter may lead to increased strain on the pump, causing noise.
   Next: Reinstall the filter and run a test cycle.
3. Inspect the Pump
   Do: Look at the pump area for any visible damage or blockages. Use a flashlight to examine the pump motor and impeller.
   Observe: A damaged or clogged pump can create loud noises during operation.
   Means: A faulty pump may need to be replaced if it's the source of the noise.
   Next: If the pump is damaged, consider replacing it or contacting a professional.
4. Check the Motor
   Do: Listen closely to determine if the noise is coming from the motor. If the motor is making a loud humming sound, it may be failing.
   Observe: A failing motor will often produce a loud, continuous noise.
   Means: A faulty motor may need to be replaced by a professional.
   Next: If the motor is the issue, contact a professional technician.
5. Test with an Empty Dishwasher
   Do: Run an empty cycle to see if the noise still occurs without dishes or debris.
   Observe: If the noise persists, the issue is likely internal.
   Means: This helps isolate the source of the noise to internal components.
   Next: If the noise continues, consider calling a professional.
6. Check for Leveling Issues
   Do: Ensure the dishwasher is properly leveled. Uneven flooring can cause the dishwasher to vibrate and make noise.
   Observe: If the dishwasher is not level, it may rock or vibrate during operation.
   Means: An unlevel dishwasher can create noise due to instability.
   Next: Adjust the leveling legs as needed and test the dishwasher again.

Common causes

Parts matching

If you need to replace parts, here are common replacements for noise issues:

• Dishwasher Filter - for clogged or dirty filters
• Pump Assembly - for damaged or clogged pumps
• Motor Assembly - for failing motors
• Spray Arms - for damaged or worn spray arms

Always refer to your dishwasher's manual for part numbers and compatibility.

When to call a professional

• The noise persists after cleaning the filter and pump
• You hear loud, continuous humming or grinding noises
• You notice water leaking from the dishwasher
• The dishwasher does not start or completes cycles properly
• You suspect internal motor or pump damage

FAQ

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