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

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

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

User Suggested Solutions

  1. 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.

  2. Inspect the drain pump for any obstructions. If the pump is blocked, remove debris. If the pump is faulty, consider replacing it.

  3. Examine the drain hose for kinks or blockages. Ensure it is properly connected and not pinched behind the dishwasher.

  4. Test the float switch for functionality. If it is stuck or defective, it may need to be cleaned or replaced.

  5. Check the control board for any electrical issues. If there are signs of damage or malfunction, you may need to consult a professional.

Analysis based on 1 community discussions
View Sources

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

  1. Zanussi dishwasher single beep error

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