Here's a comprehensive guide to diagnosing and fixing a dishwasher that won't drain:

Common Causes

• Clogged drain hose or pump filter:
  • Check for kinks or blockages in the drain hose
  • Remove and clean the pump filter (usually located at bottom front)
  • Ensure drain hose isn't pushed too far into standpipe
• Improper drain hose installation:
  • Verify proper drain hose height (24-36 inches from floor)
  • Check that hose isn't submerged in water
  • Look for sharp bends in the hose
• Clogged pump:
  • Listen for humming sounds without water movement
  • Check for small items blocking the pump (coins, buttons)
  • Clear any debris from pump area

DIY Solutions

• Basic troubleshooting:
  • Run an empty cycle to test drainage
  • Clean the drain pump filter
  • Check and clear the drain hose

Maintenance Tips

• Clean the pump filter every 3-6 months
• Check pockets for debris before washing
• Run a hot water cycle monthly to prevent buildup

When to Call a Professional

• If you experience electrical issues
• When drainage problems persist after DIY attempts
• If you hear unusual sounds from the pump area

⚠️ Always unplug the dishwasher before attempting any internal inspection or maintenance.