Zanussi Dishwasher: not draining

Professional Repair Guide

What is this symptom?

Is your Zanussi dishwasher not draining properly? You may notice standing water at the bottom after a cycle, accompanied by gurgling sounds or beeping error codes like i20, C2, or F2. This issue can stem from common problems such as a clogged drain hose or a dirty filter, preventing efficient drainage. Don't let standing water ruin your clean dishes!

Urgency: Medium

Possible Causes

Clogged or blocked drain hose

How to Identify: Water remains in tub; check under the sink for kinks or debris in the hose; visible obstruction or bend in hose

Part: Drain hose

Clogged or dirty filter and sump area

How to Identify: Food debris and sludge visible in filter; foul smell; water does not drain quickly; gurgling noises

Part: Dishwasher filter / drain basket

Blocked air gap

How to Identify: Water backing up or appearing in sink; foul odor from air gap; drain cycle doesn’t clear water

Part: Air gap

Faulty drain pump or impeller obstruction

How to Identify: Pump hums but no water exits; debris stuck in impeller; multimeter shows abnormal resistance on pump motor

Part: Drain pump / impeller

Next step

Choose the next step for not draining

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

Check during diagnosis

Most relevant component to inspect

Drain Hose

Carries waste water from the drain pump to your home's standpipe or sink drain.

Typical part-only price: $15 - $30
DIY difficulty: Easy
Estimated time: 15-30 mins

Optional: enter your model number

Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

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

Possible related component

Dishwasher Filter

Screens food debris from recirculating wash water and protects the pump system.

$15 - $65 · Easy · 5-15 mins

Check fit & price

Possible related component

Drain Pump

Pumps waste water out of the appliance during the drain cycle.

$35 - $80 · Easy · 15-30 mins

Check fit & price

Model number required

Model-compatible Dishwasher 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

Dishwasher Cleaner and Descaler

Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.

View maintenance supply

Maintenance supply

Braided Dishwasher Inlet Hose

For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.

View maintenance supply

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

Preventive Maintenance

Clean dishwasher filter: Filter and drain blockages leading to standing water
Frequency: monthly
Inspect drain hose for kinks or wear: Hose blockages and poor drainage
Frequency: every 3–6 months
Run cleaning cycle with dishwasher cleaner: Grease and mineral buildup in internal components
Frequency: every few months

Frequently Asked Questions

Why is my Zanussi Dishwasher not draining?

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

How do I fix Zanussi Dishwasher not draining myself?

No DIY solutions are recommended for this issue; it may require professional service.

How much does it cost to fix not draining?

Cost varies based on the issue; consult a technician for an accurate estimate.

When should I call a technician for not draining?

Call a technician if the problem persists, as it may indicate a more complex issue.

References & Sources

Zanussi Dishwasher Not Draining? Here's How to Fix It Community

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 hose
Faulty drain pump
Blocked or kinked drain hose
Faulty float switch
Electrical issue with control board

User Suggested Solutions

Check and clean the drain filter and hose. Remove the filter from the bottom of the dishwasher, rinse it under warm water, and check the hose for blockages.
Inspect the drain pump for any obstructions. If the pump is blocked, remove debris. If the pump is faulty, consider replacing it.
Examine the drain hose for kinks or blockages. Ensure it is properly connected and not pinched behind the dishwasher.
Test the float switch for functionality. If it is stuck or defective, it may need to be cleaned or replaced.
Check the control board for any electrical issues. If there are signs of damage or malfunction, you may need to consult a professional.

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