How to drain and clean Bosch dishwasher

How to drain and clean Bosch dishwasher

How to Drain and Clean Your Bosch Dishwasher: Step-by-Step Guide

Keeping your Bosch dishwasher clean and ensuring it drains properly is essential for optimal performance and sparkling clean dishes. If your dishwasher isn’t draining or you notice odors, standing water, or residue, it’s time to give it a deep clean. Follow this step-by-step guide to safely clean the filter, pump, and drain hose.

Step 1: Remove and Clean the Filter Unit

The filter traps food particles and prevents clogs. Here's how to clean it:

  1. Remove the bottom dish rack to access the base of the dishwasher.
  2. Locate the cylindrical filter at the bottom centre.
  3. Twist and lift it out carefully.
  4. Separate the parts by gently unscrewing the cylindrical mesh filter.
  5. Rinse both parts under running water. Use a small brush (like an old toothbrush) to scrub off grease and debris.
  6. Reassemble the filter and reinstall it, making sure the arrows align for a proper fit.

Tip: Clean the filter once a month to prevent drainage issues and maintain peak performance.

Step 2: Check and Clean the Dishwasher Pump

If your dishwasher isn’t draining, the pump might be blocked.

  1. After removing the filter, soak up any standing water at the bottom using a sponge or turkey baster.
  2. Find the small plastic pump cover beneath the filter unit.
  3. Gently pry off the cover with a spoon or dull tool.
  4. Use tweezers or your fingers to remove debris like food scraps, glass, or hair from the impeller blades.
  5. Replace the pump cover securely.
  6. Reinstall the filter, ensuring it clicks into place properly.

Tip: Cleaning the pump can help resolve drainage errors and keep your machine running quietly and efficiently.

Step 3: Check and Clear the Drain Hose

A blocked or kinked hose can stop water from draining.

  1. Unplug the dishwasher or turn off the power.
  2. Locate the drain hose—usually found at the back of the machine.
  3. Check for visible kinks or sharp bends and straighten them.
  4. Detach the hose carefully and place one end into a bucket.
  5. Drain any trapped water and flush the hose with hot water to remove clogs.
  6. Reconnect the hose securely and check for leaks.

Optional: Run a short drain cycle after reconnecting to ensure everything is flowing smoothly.

Step 4: Run a Cleaning Cycle

Once you’ve cleaned the internal parts:

  1. Reassemble all components properly.
  2. Run a short or rinse cycle with the dishwasher empty.

This flushes out any remaining debris and refreshes the interior.

Maintenance Tips

  • Clean the filter every 3–4 weeks or as soon as you notice slower drainage.
  • Use a dishwasher cleaner monthly to break down grease and limescale.
  • Scrape off large food bits before loading dishes—no need to pre-rinse.
  • Inspect the drain hose a few times a year for blockages or damage.

Quick Summary

  • Remove and rinse the filter unit thoroughly.
  • Clean the pump and impeller of any debris.
  • Check and flush the drain hose.
  • Run an empty cleaning cycle.

Following these steps will help your Bosch dishwasher drain effectively and stay odour-free. If problems persist, contact Bosch customer support or a qualified technician for further help.

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