Dishwasher Making a Crackling Noise

Quick answer

If your dishwasher is making a crackling noise, first ensure it's safe to work on by turning off the power. The noise could be due to food debris, loose objects, or a faulty component. Check for simple fixes like cleaning the filter or securing items inside. If the problem persists, inspect the heating element or other parts.

Confirm the symptom

• You hear a crackling or popping sound during the wash cycle.
• The noise occurs consistently during specific cycles.
• There is no visible water leakage.
• The dishwasher seems to be working otherwise.
• The noise is not accompanied by error codes on the display.

Tools and prep

• Turn off the power to the dishwasher at the circuit breaker.
• Gather a screwdriver, flashlight, and gloves.
• Prepare a towel or cloth to soak up any water.
• Clear the area around the dishwasher for easy access.
• Have a bucket ready in case of water spillage.

Step-by-step troubleshooting

1. Check for Loose Items
   Do: Open the dishwasher and inspect the racks and utensil holders.
   Observe: Look for any loose or misplaced items that could be causing the noise.
   Means: Secure or remove any loose items.
   Next: Run a test cycle to see if the noise persists.
2. Clean the Filter
   Do: Locate and remove the filter at the back of the bottom rack.
   Observe: Check for food debris or blockages.
   Means: Clean the filter thoroughly with warm soapy water.
   Next: Reinstall the filter and run a test cycle.
3. Inspect the Spray Arms
   Do: Remove the lower rack and check the spray arms.
   Observe: Look for any blockages or damage.
   Means: Clear any blockages with a toothpick or small brush.
   Next: Reassemble the dishwasher and run a test cycle.
4. Check the Heating Element
   Do: Access the heating element, usually located at the bottom of the dishwasher.
   Observe: Look for any visible damage or corrosion.
   Means: If damaged, replace the heating element.
   Next: Reassemble the dishwasher and run a test cycle.
5. Inspect the Control Board
   Do: Locate the control board, often behind the control panel.
   Observe: Check for any signs of burnout or damage.
   Means: If damaged, replace the control board.
   Next: Reassemble the dishwasher and run a test cycle.
6. Check the Motor and Pump
   Do: Access the motor and pump assembly, usually at the bottom front of the dishwasher.
   Observe: Listen for unusual noises and check for any damage.
   Means: If damaged, replace the motor or pump.
   Next: Reassemble the dishwasher and run a test cycle.
7. Examine the Drain Hose
   Do: Locate the drain hose, typically at the back of the dishwasher.
   Observe: Check for any kinks, blockages, or damage.
   Means: Straighten or replace the hose as needed.
   Next: Reassemble the dishwasher and run a test cycle.
8. Inspect the Float Switch
   Do: Find the float switch, usually at the bottom of the dishwasher.
   Observe: Ensure it moves freely and is not stuck.
   Means: Clean or replace the float switch if necessary.
   Next: Reassemble the dishwasher and run a test cycle.

Common causes

Parts matching

If you need to replace any parts, ensure they are compatible with your dishwasher model.

• Heating Element
• Control Board
• Motor or Pump Assembly
• Drain Hose
• Float Switch

Always double-check the part number before purchasing replacements.

When to call a professional

• The dishwasher is leaking water.
• You smell burning or see smoke.
• The dishwasher is not draining properly.
• You are not comfortable performing the repairs yourself.
• The noise is accompanied by error codes on the display.
• The dishwasher is under warranty.

FAQ

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