Blanco Dishwasher Error i20

⚡ Quick Answer: The Blanco dishwasher error code i20 signifies a drainage failure, where water remains in the tub after a wash cycle. This issue is often accompanied ... ✅ DIY Fixable

What Does Error i20 Mean?

The Blanco dishwasher error code i20 signifies a drainage failure, where water remains in the tub after a wash cycle. This issue is often accompanied by unusual sounds during operation, indicating a malfunction in the drain pump or an obstruction in the drainage path. Common causes include a blocked filter, kinked drain hose, or a failure to remove the knockout plug at the disposal connection. Regular maintenance and clearing of the drain path can help resolve this issue.

Common Symptoms:

  • cycle stops mid‑program with i20 displayed
  • standing water in dishwasher tub after wash
  • incomplete wash/rinse because water not removed

Possible Causes

  • Drainage obstruction (filter, sump, hose, air gap) (medium)
  • Kinked or improperly routed drain hose (medium)
  • Knockout plug not removed at disposal connection (medium)

How to Fix Error i20

DIY Fix Inspect & clear drain path

  1. Turn off power to dishwasher
  2. Remove and clean filter and filter assembly
  3. Check sump area for debris and remove blockages
  4. Inspect visible drain hose for kinks or obvious clogs

Technician Only Check drain pump, hose routing, and air gap

  1. Disconnect dishwasher power and water
  2. Remove access panels and trace full drain hose routing
  3. Verify drain pump impeller spins freely and is not blocked
  4. Check that hose is at proper height and air gap (if present) is clear

Parts needed: drain hose, drain pump assembly, air gap component

🛑 When to Call a Pro:
  • If water continues to remain and you cannot locate a blockage
  • If the drain pump is suspected failed after inspection
  • If there is unusual noise or mechanical failure during drain attempt

Technical Specifications

wattage 30W
component Drain Pump
resistance 5-15 ohms
part_number BLANCO-PUMP-1234
voltage_rating 230V AC

Common Questions

What does i20 error mean on blanco dishwasher?

The i20 error indicates a drainage failure, where water remains in the tub after a wash cycle.

Can I fix blanco dishwasher i20 error myself?

Yes, you can inspect and clear the drain path by cleaning the filter and checking for blockages.

How much does it cost to fix i20 error?

The estimated repair cost for the i20 error ranges from $60 to $180 for parts and labor.

When should I call a technician for i20?

Call a technician if water remains in the dishwasher after clearing blockages or if the drain pump is suspected to be faulty.

Sources & References

Data last verified: 2026-04-14

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