Miele Dishwasher: drainage error

Professional Repair Guide

What is this symptom?

Experiencing a drainage error with your Miele Dishwasher? You might see error codes like F11 or F14, indicating a failure to remove water at the end of a cycle, leaving standing water in the tub. This issue is commonly caused by a clogged drain filter or improper installation, but can often be resolved with some DIY solutions.

Urgency: Medium

Important Tips for Miele Models

Error code F11/F14 specifically indicates drainage system faults; check filters and pump as described in Miele error code guides.

Possible Causes

Clogged drain filter or fine filter assembly

How to Identify: Water remains after wash; visible debris on filter; error code F11/F14

Part: Filter assembly (coarse and fine filters)

Improper installation (lack of high loop or air gap)

How to Identify: Hose routing under sink lacks high loop/air gap; water siphons back or fails to exit

Part: Drain hose routing

DIY Solutions

Clean drain filter assembly

Easy 10-20 minutes

Tools Needed: gloves, soft brush, warm water

Turn off and disconnect power.
Remove lower rack to access filter.
Twist and lift out filter assembly.
Rinse under running water and use brush to remove debris.
Reinstall filter and run a short drain cycle.

⚠️ Safety First: Ensure power is off before reaching into dishwasher

Inspect and clear drain hose

Moderate 20-40 minutes

Tools Needed: screwdriver, bucket, flashlight

Turn off dishwasher and water supply.
Locate drain hose under sink and detach carefully.
Look through hose for blockages with flashlight.
Use gentle water flow or long flexible brush to clear debris.
Reattach hose ensuring no kinks and proper routing with high loop/air gap.

⚠️ Safety First: Have a bucket ready; avoid sharp tools that can puncture hose

Remove foreign objects from drain pump/non-return valve

Advanced 30-60 minutes

Tools Needed: screwdriver, pliers, towels

Disconnect power.
Remove bottom access panel.
Locate and open non-return valve and drain pump area.
Remove visible debris blocking impeller or valve.
Reassemble and test drain cycle.

⚠️ Safety First: Risk of injury from sharp debris; disconnect power first

Professional Repairs

Drain pump replacement

Estimated Cost: $150 - $300

Internal control or sensor repair

Estimated Cost: $200 - $500

When to Call a Professional

If pump cleaning does not restore drainage

If you encounter electrical faults or error codes persist after cleaning

Preventive Maintenance

Clean filter assembly: Drain blockages and drainage errors
Frequency: monthly
Check drain hose routing and inspect for kinks: Improper drainage and siphoning issues
Frequency: quarterly

Frequently Asked Questions

Why is my Miele Dishwasher drainage error?

Common causes include a clogged drain filter or improper installation such as lack of a high loop or air gap.

How do I fix Miele Dishwasher drainage error myself?

You can clean the drain filter, inspect and clear the drain hose, or remove foreign objects from the drain pump.

How much does it cost to fix drainage error?

Professional repairs can range from $150 to $500 depending on the issue.

When should I call a technician for drainage error?

Call a technician if DIY solutions don't resolve the issue or if you're uncomfortable with advanced repairs.

References & Sources

Miele filter and drain troubleshooting Community

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

75%

DIY Success Rate Difficulty: Either

Common Issues Reported by Users

Clogged drain filter or hose
Faulty drain pump
Blocked air gap or kitchen sink drain

User Suggested Solutions

Check and clean the drain filter and hose. Open the dishwasher door, remove the bottom rack, and take out the filter. Rinse it under warm water to remove debris. Inspect the drain hose for any kinks or blockages and clear them if necessary.
Test the drain pump for functionality. Access the pump by removing the lower spray arm and cover. Check for any obstructions in the pump impeller and ensure it spins freely. If the pump is not functioning, it may need to be replaced.
Inspect the air gap and kitchen sink drain for blockages. Remove the air gap cover and clean it if necessary. If the sink drain is clogged, use a plunger or drain cleaner to clear it.