Zanussi Washing Machine: drain issue

Professional Repair Guide

What is this symptom?

Experiencing a drain issue with your Zanussi washing machine? If water remains in the drum or drains slowly, leaving your clothes wet, it could be due to a blocked drain pump filter or, less commonly, a door latch switch failure. Error codes like E20, E21, or C2 may also appear, indicating the need for troubleshooting.

Urgency: Medium

Important Tips for Zanussi Models

  • Error codes E20, E21, C2 indicate drainage problems, often related to blocked pump/filter or hose issues.
  • Correct drain hose height and placement per manual crucial for proper drainage to avoid siphoning.

Possible Causes

Blocked drain pump filter

How to Identify: Water left in drum, slow draining, debris visible in bottom front access filter area

Part: Drain pump filter

Door latch switch failure (less directly related but can affect cycles)

How to Identify: Machine won’t progress to drain or locks mid‑cycle

Part: Door latch switch

DIY Solutions

Clean drain pump filter

Moderate 15-30 minutes
Tools Needed: bucket, towels, screwdriver (if needed)
  1. Unplug machine and place bucket under front access panel.
  2. Open filter cover and slowly unscrew filter to drain water.
  3. Remove debris from filter and pump cavity; rinse filter.
  4. Reinstall filter and close panel, test drain cycle.
⚠️ Safety First: Always disconnect power before opening access panel.

Inspect and clear drain hose

Moderate 20-40 minutes
Tools Needed: bucket, hose removal tools
  1. Unplug machine and detach drain hose from standpipe/sink connection.
  2. Check hose for kinks or obstructions; flush with water to clear blockages.
  3. Ensure hose is installed at correct height (approx 60-100 cm) and not inserted too far into drain.
  4. Reconnect hose and test drain cycle.
⚠️ Safety First: Support hose to avoid water spill.

Run a hot wash with no detergent to clear foam/level sensor issues

Easy 60 minutes
  1. Ensure machine is empty and unplugged then plugged back in.
  2. Select a hot wash cycle with no detergent.
  3. Run cycle to clear foam and flush drain pathways.
  4. Check if draining improves on next normal cycle.

Next step

Choose the next step for drain issue

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Door Latch Assembly

Mechanically secures the appliance door and may operate a door-closed safety switch.

$15 - $80 · Medium · 20-60 mins

Check fit & price
Model number required

Model-compatible Washing Machine parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Washing Machine Cleaner Tablets

Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.

View maintenance supply
Maintenance supply

Braided Washer Inlet Hoses

A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.

View maintenance supply
Maintenance supply

Washer Drain Hose Holder

Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace drain pump

Estimated Cost: $50 - $150

Inspect and repair internal hose connections or pressure sensor

Estimated Cost: $80 - $200

When to Call a Professional

Drain pump making unusual noises or completely unresponsive
Internal wiring or pressure sensor issues suspected
Water leaks from pump area
Draining issues persist after filter and hose cleaning

Preventive Maintenance

  • Clean drain pump filter: Blockages that cause slow or failed drainage
    Frequency: monthly
  • Inspect drain hose for kinks or debris: Hose blockages and siphoning issues
    Frequency: quarterly
  • Use correct amount of low‑foam detergent: Foam blockages that affect drain sensor and water level detection
    Frequency: Every wash

Frequently Asked Questions

Why is my Zanussi Washing Machine drain issue?
Your washing machine may have a blocked drain pump filter or a failing door latch switch.
How do I fix Zanussi Washing Machine drain issue myself?
You can clean the drain pump filter, inspect the drain hose, or run a hot wash cycle without detergent.
How much does it cost to fix drain issue?
Professional repairs for a drain issue can cost between $50 and $200, depending on the problem.
When should I call a technician for drain issue?
If DIY fixes don't resolve the issue or if you're unsure about handling repairs, it's best to call a technician.

References & Sources

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

  • Clogged drain filter or pump
  • Blocked or kinked drain hose
  • Faulty drain pump

User Suggested Solutions

  1. 1. Unplug the washing machine. 2. Locate the drain filter (usually at the front bottom). 3. Place a towel or shallow container underneath. 4. Open the filter cap and let any water drain out. 5. Clean the filter of any debris. 6. Reinsert the filter and close the cap. 7. Plug the machine back in and test.

  2. 1. Unplug the washing machine. 2. Inspect the drain hose for any kinks or blockages. 3. Remove the hose from the back of the machine and check for clogs. 4. Reattach the hose securely and ensure it is not kinked. 5. Plug the machine back in and test.

  3. 1. Unplug the washing machine. 2. Access the drain pump (may require removing the back panel). 3. Inspect the pump for any blockages or damage. 4. If the pump is faulty, replace it with a new one. 5. Reassemble the machine and test.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

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

  1. Sudden E20 Error on ZANUSSI washing machine

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