Asko Dishwasher: not draining

Possible Causes

Clogged or dirty filter assembly blocking water exit

How to Identify: Food debris visible in filter area at bottom of tub; water remains after cycle

Part: Filter and drain basket

Blocked or kinked drain hose preventing water flow out

How to Identify: Hose bent, kinked, or debris seen when disconnected; blowing air through hose is difficult

Part: Drain hose

Faulty or obstructed drain pump

How to Identify: No humming or unusual noises during drain cycle; visible debris in pump impeller when accessed

Part: Drain pump assembly

Clogged air gap or garbage disposal connection

How to Identify: Visible debris in air gap cover, or backyard clogging backing up water; disposal clog observed

Part: Air gap / disposal linkage

Improperly installed high loop configuration of drain hose

How to Identify: Drain hose runs straight without an elevated loop under sink, leading to potential backflow

Part: Drain hose high loop

DIY Solutions

Clean filter and drain basket

Easy 10–20 minutes

Tools Needed: screwdriver (if required), soft brush, bucket or towels

1. Turn off dishwasher and open door
2. Remove bottom rack and locate filter assembly
3. Twist and remove filter and drain basket
4. Rinse filter under running water and brush away debris
5. Replace filter securely and run a short cycle to test draining

⚠️ Safety First: Ensure power is off to avoid electrical hazard

Inspect and clear drain hose

Moderate 20–40 minutes

Tools Needed: screwdriver, bucket, flashlight, flexible brush or thin tool

1. Turn off power and water to dishwasher
2. Pull dishwasher out as needed and locate drain hose under sink
3. Check hose path for kinks; straighten if present
4. Disconnect hose and inspect inside with flashlight
5. Use flexible brush or water to clear any debris; reconnect hose securely
6. Run a short cycle to check draining

⚠️ Safety First: Be prepared for water to spill when disconnecting hose

Clean air gap and disposal connection

Moderate 15–30 minutes

Tools Needed: screwdriver, brush or toothpick

1. Locate air gap cap on sink and remove
2. Clear debris from air gap chamber with brush or toothpick
3. Check disposal inlet for debris and run disposal briefly
4. Reassemble air gap and test dishwasher drain cycle

⚠️ Safety First: Turn off disposal power before inspecting

Professional Repairs

Replace drain pump assembly

Estimated Cost: $80 - $250

Reconfigure or replace faulty drain hose

Estimated Cost: $30 - $100

When to Call a Professional

Water remains after basic filter and hose cleaning

You hear no sound from the drain pump during drain cycle

Error codes related to drain pump shown on display

Leaks from drain pump area when operating

Preventive Maintenance

• Clean dishwasher filter: Clogs causing drainage problems
  Frequency: monthly
• Inspect drain hose path: Kinks and blockages in hose
  Frequency: quarterly
• Run garbage disposal regularly: Backups in shared drain lines
  Frequency: weekly

Frequently Asked Questions

Why is my Asko Dishwasher not draining?

Common causes include a clogged filter, blocked drain hose, or a faulty drain pump.

How do I fix Asko Dishwasher not draining myself?

Start by cleaning the filter and drain basket, then inspect the drain hose for kinks.

How much does it cost to fix not draining?

Professional repair costs range from $80 to $250 for pump replacement and $30 to $100 for drain hose issues.

When should I call a technician for not draining?

If DIY solutions don’t resolve the issue or if the problem seems complex, it's time to call a pro.

Common Issues Reported by Users

• Pressure sensor malfunction (1 mentions)

User Suggested Solutions