Whirlpool Dishwasher: not spraying

Possible Causes

Clogged spray arms

How to Identify: Spray arm holes blocked by food particles, mineral deposits; spray arms do not spin freely by hand

Part: Spray arms (upper and lower)

Blocked or dirty filter / sump area

How to Identify: Filter assembly visibly packed with debris; reduced water flow to pump even though water present; water may remain not circulating

Part: Dishwasher filter and sump

Circulation pump or impeller failure

How to Identify: No sound of water movement during cycle despite water present; pump impeller blocked or not turning

Part: Circulation pump (and impeller)

Hose blockage between pump and spray arms

How to Identify: Water present at bottom but no delivery to spray arms; requires inspection of internal connections

Part: Internal water delivery hose

DIY Solutions

Clean spray arms

Easy 10-20 minutes

Tools Needed: toothpick or small brush, warm water

1. Remove lower and upper spray arms per your model’s method (twist or unclasp).
2. Hold arms under warm water and use a toothpick to clear each hole.
3. Rinse thoroughly and ensure arms spin freely before reattaching.

⚠️ Safety First: Ensure dishwasher power is off before removing arms

Clean dishwasher filter and sump area

Moderate 15-30 minutes

Tools Needed: soft brush, warm water

1. Turn off and pull out the bottom rack.
2. Remove the filter assembly and rinse under running water.
3. Brush away debris from mesh and reassemble securely.

⚠️ Safety First: Do not use sharp tools that might damage filter mesh

Check and ensure water supply and inlet valve screen cleaning

Moderate 20-40 minutes

Tools Needed: wrench, bucket/towel

1. Turn off water supply to dishwasher.
2. Inspect water supply hose for kinks; straighten or replace as needed.
3. If accessible, inspect and clean inlet valve screen of sediment.

⚠️ Safety First: Turn off water and power before accessing inlet valve

Professional Repairs

Replace circulation pump or motor assembly

Estimated Cost: $150 - $350

Replace water inlet valve

Estimated Cost: $50 - $150

When to Call a Professional

Dishwasher fills with water but still no spray after cleaning spray arms and filter

Persistent unusual noises from pump area

Electrical control board or motor issues (no hum, no circulation)

Preventive Maintenance

• Clean spray arms and filter: Clogs that stop spray water distribution
  Frequency: monthly
• Check water inlet hose for kinks: Water supply restriction
  Frequency: annually

Frequently Asked Questions

Why is my Whirlpool Dishwasher not spraying?

Common causes include clogged spray arms, blocked filters, or pump failures.

How do I fix Whirlpool Dishwasher not spraying myself?

Clean spray arms, filter, and check water supply for easy DIY fixes.

How much does it cost to fix not spraying?

Professional repairs can range from $50 to $350 depending on the issue.

When should I call a technician for not spraying?

Call a technician if DIY fixes don't work or if pump or valve replacement is needed.

Can I Fix This Myself?

67%

DIY Success Rate Difficulty: Either

Common Issues Reported by Users

• Defective circulation motor or pump (2 mentions)

User Suggested Solutions

1. Replaced the pump, which resolved the issue.

   Success rate: 25.0%

2. Consider replacing the sump with a new wash pump.

   Success rate: 25.0%

Community Discussions

won't spray, dishes stay dirty

Replaced the pump, which resolved the issue.

DIY View on Reddit →

Fills and drains, but no spraying

The circulation motor is likely defective; consider replacing the sump with a new wash pump.

DIY View on Reddit →

Source: Reddit r/appliancerepair