Blomberg Dishwasher: not draining

Professional Repair Guide

What is this symptom?

If your Blomberg dishwasher is not draining, you may notice water pooling at the bottom after the wash cycle. This common issue can stem from a clogged filter, a blocked drain hose, or even a faulty drain pump. Understanding the cause can help you effectively troubleshoot and restore your dishwasher's functionality.

Urgency: Medium

Important Tips for Blomberg Models

  • Blomberg recommends checking drain hose position and cleaning filters as initial steps

Possible Causes

Clogged filter or drain area

How to Identify: Standing water after cycle with food debris visible at bottom, slow drainage

Part: Dishwasher filter / drain screen

Blocked or kinked drain hose

How to Identify: Water remains after cycle and drain hose behind unit appears bent, twisted, or blocked

Part: Drain hose

Faulty drain pump

How to Identify: Unusual noises during drain phase, no water movement despite cleared filters/hoses

Part: Drain pump assembly

Air gap or garbage disposal connection blockage

How to Identify: Dishwasher connected to garbage disposal; disposal clogged or air gap blocked and water cannot exit

Part: Air gap / garbage disposal connection

DIY Solutions

Clean the dishwasher filter and drain area

Easy 10-20 minutes
Tools Needed: screwdriver (if applicable), warm water, soft brush
  1. Turn off power and open dishwasher
  2. Remove bottom rack and locate filter at base
  3. Twist and lift out the filter assembly
  4. Rinse under warm water and scrub debris with brush
  5. Reinstall filter securely and run a short cycle
⚠️ Safety First: Ensure power is off before reaching inside

Inspect and clear drain hose

Moderate 20-40 minutes
Tools Needed: bucket, work gloves, flashlight, hose cleaning brush or flexible rod
  1. Turn off power and water supply
  2. Pull out dishwasher to access rear drain hose
  3. Inspect hose for kinks or twists and straighten
  4. Disconnect hose and flush water through it or use brush to clear blockages
  5. Reconnect hose ensuring a proper high loop
⚠️ Safety First: Be prepared for water spill when disconnecting hose

Clean the air gap or garbage disposal connection

Easy 10-15 minutes
Tools Needed: screwdriver to remove air gap cover, small brush
  1. Locate air gap on sink or under counter
  2. Remove cover and clean any debris
  3. If connected to garbage disposal, run disposal to clear blockages
  4. Reassemble and test dishwasher
⚠️ Safety First: Turn off disposal power before working

Professional Repairs

Replace drain pump

Estimated Cost: $50 - $200 for part

Diagnose complex plumbing or internal faults

Estimated Cost: $150 - $350

When to Call a Professional

If drain pump hums but does not pump water
If water still doesn’t drain after filters and hoses are clear
If unusual noises or error codes indicating internal faults appear

Preventive Maintenance

  • Clean filters: Debris buildup that can block drainage
    Frequency: monthly
  • Inspect drain hose: Kinks or blockages in hose that restrict flow
    Frequency: annually

Frequently Asked Questions

Why is my Blomberg Dishwasher not draining?
Common causes include a clogged filter, blocked drain hose, or a faulty drain pump.
How do I fix Blomberg Dishwasher not draining myself?
Start by cleaning the filter and drain area, then inspect the drain hose for kinks.
How much does it cost to fix not draining?
Professional repairs can range from $50 to $200 for parts, or $150 to $350 for complex issues.
When should I call a technician for not draining?
Call a technician if DIY solutions don't work or if issues seem complex.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

75%
DIY Success Rate Difficulty: DIY

Common Issues Reported by Users

  • Clogged drain filter or drain hose
  • Faulty drain pump
  • Blocked air gap or garbage disposal

User Suggested Solutions

  1. Check and clean the drain filter and drain hose. Remove the bottom rack, take out the filter, and rinse it under warm water. Inspect the drain hose for kinks or clogs.

  2. Inspect and test the drain pump. If the pump is clogged or malfunctioning, it may need to be removed and cleaned or replaced. To access, remove the lower spray arm and the cover.

  3. Check the air gap or garbage disposal for blockages. If your dishwasher is connected to a garbage disposal, ensure it is clear and the air gap is not clogged.

Analysis based on 1 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. how to remove drain pump from blomberg dw55100fbi dishwasher...

Community Discussions

dishwasher is not draining

Push in a small tab before rotating the pump to remove it.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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