Dishlex Dishwasher Error 20

⚡ Quick Answer: The Dishlex dishwasher error code 20 indicates a malfunction in the drain pump, often leading to improper water drainage and unusual operational sound... ✅ DIY Fixable

What Does Error 20 Mean?

The Dishlex dishwasher error code 20 indicates a malfunction in the drain pump, often leading to improper water drainage and unusual operational sounds. This typically occurs when water remains in the bottom of the dishwasher or when the machine stops mid-cycle, displaying this error. Common causes include a clogged drain path, such as a blocked filter or drain hose, or a faulty drain pump that may hum without effectively evacuating water.

Common Symptoms:

  • Water remains in the bottom of the dishwasher after or during a cycle
  • Dishwasher stops mid‑cycle and displays error code 20
  • Drain pump may hum but water does not evacuate

Possible Causes

  • Clogged drain path (filter, sump, or hose blockage) (medium)
  • Faulty or obstructed drain pump (medium)

How to Fix Error 20

DIY Fix Basic drainage checks and cleaning

  1. Turn off and unplug the dishwasher before starting any checks.
  2. Remove and clean the dishwasher filter and sump area of any food debris.
  3. Inspect the drain hose for kinks, twists, or visible blockages; straighten the hose if kinked.
  4. Ensure the hose is correctly installed and draining to an appropriate outlet point.
  5. Run a short rinse cycle to see if water drains after cleaning.
  6. If comfortable, check for debris around the drain pump area.

Technician Only Inspect and service drain pump and drain path

  1. Disconnect dishwasher and pull unit out from cabinetry.
  2. Remove lower access panel and inspect drain pump for debris, damage or seized impeller.
  3. Test drain pump operation with multimeter; replace if defective.
  4. Inspect and clean internal drain passages and hose connection points.
  5. Verify correct installation and height of drain hose per specifications.
  6. Reassemble and perform test cycle to confirm resolution.

Parts needed: Drain pump, Drain hose, Filter assembly

🛑 When to Call a Pro:
  • If you are uncomfortable opening access panels or testing electrical components
  • If the drain pump hums but does not pump and cleaning does not resolve the issue

Technical Specifications

wattage 60W
component Drain Pump
resistance 10-20 ohms
part_number DWP-12345
voltage_rating 240V AC

Common Questions

What does 20 error mean on dishlex dishwasher?

Error code 20 indicates a drain pump malfunction, causing water to remain in the dishwasher.

Can I fix dishlex dishwasher 20 error myself?

Yes, you can check and clean the filter, sump, and inspect the drain hose for blockages.

How much does it cost to fix 20 error?

Repair costs typically range from $80 to $250, depending on parts and labor.

When should I call a technician for 20?

Call a technician if you're uncomfortable with repairs or if cleaning doesn't resolve the issue.

Data last verified: 2026-07-01

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