Asko Dishwasher: grinding noise

Professional Repair Guide

What is this symptom?

Hearing a grinding noise from your Asko Dishwasher? This unsettling sound typically occurs during wash or drain cycles and often indicates mechanical friction or an obstruction within internal components like the pump or impeller. Identifying the root cause early can prevent further damage and ensure your dishwasher operates smoothly.

Urgency: Medium

Important Tips for Asko Models

Asko official support notes that if impeller or motor bearings fail, the entire circulation pump assembly may need replacement; some models allow impeller replacement separately. (Asko Appliance Support
Obstructions like utensils can cause noisy operation and grinding if wash arms hit items; ensure loads do not block spray arms. (Asko Appliance Support

Possible Causes

Foreign object (debris) jammed in pump/impeller or chopper area

How to Identify: Grinding occurs when debris such as glass shards, fruit pits, utensils falls into lower sump/filter area and noise often correlates with the pump trying to spin.

Part: Drain or circulation pump impeller, chopper blade

Damaged or worn wash/drain impeller

How to Identify: Grinding that persists after debris removal; impeller blades broken, warped, or rubbing against housing when inspected visually. (askoappliance.support

Part: Wash impeller / drain impeller

Worn motor bearings in circulation or drain pump

How to Identify: Continuous grinding or droning noise even with no debris present; noise appears during wash cycles and is mechanical in nature.

Part: Circulation/drain pump motor bearings

DIY Solutions

Check and Remove Foreign Objects

Moderate 15-30 minutes

Tools Needed: screwdriver, flashlight, gloves

Turn off power to dishwasher at circuit breaker.
Remove bottom rack and unscrew or lift off lower spray arm.
Remove filter/screen assembly and inspect sump area for debris.
Carefully remove any foreign objects lodged near impeller or pump area.
Reassemble components and test dishwasher.
Restore power and run a short cycle to verify noise gone.

⚠️ Safety First: Ensure power is fully disconnected before reaching into sump.

Inspect and Free Spray Arms

Easy 10-15 minutes

Tools Needed: none or screwdriver (model dependent)

Turn off dishwasher and pull out racks to access spray arms.
Manually spin spray arms to check for obstruction.
Clear any lodged food particles or reposition spray arms if misaligned.
Ensure dishes are loaded so arms can rotate freely.
Run a test cycle to confirm noise is resolved.

Professional Repairs

Replace Damaged Impeller or Pump Assembly

Estimated Cost: $80 - $350

Replace Circulation or Drain Pump Motor

Estimated Cost: $150 - $400

When to Call a Professional

Noise persists after debris removal and basic checks

Internal pump or motor component suspected to be failing

Uncertain diagnosis of internal mechanical component

Preventive Maintenance

Clean filter and sump area: Debris buildup that can cause grinding noises
Frequency: monthly
Inspect spray arms and ensure free rotation: Spray arm obstruction and scraping noises
Frequency: monthly

Frequently Asked Questions

Why is my Asko Dishwasher grinding noise?

Common causes include foreign objects jammed in the pump, damaged impellers, or worn motor bearings.

How do I fix Asko Dishwasher grinding noise myself?

Turn off power, remove the bottom rack, and check for debris in the pump area. Inspect spray arms for obstructions.

How much does it cost to fix grinding noise?

Repair costs can range from $80 to $400 depending on whether you need to replace impellers or pump motors.

When should I call a technician for grinding noise?

If DIY solutions donâ€™t resolve the issue or if the problem persists, it's time to consult a professional.

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

65%

DIY Success Rate Difficulty: Either

Common Issues Reported by Users

Debris in the impeller or spray arm
Faulty or worn-out motor
Damaged or misaligned drain pump

User Suggested Solutions

Inspect and clean the impeller and spray arm. Remove any debris or food particles that may be obstructing movement. Make sure the spray arm is properly aligned and can rotate freely.
Test the motor for proper operation. If it's making unusual noises or not functioning correctly, consider replacing it. Ensure the dishwasher is unplugged before attempting any repairs.
Check the drain pump for any signs of damage or misalignment. If necessary, realign or replace the pump to ensure it operates smoothly without grinding.