Bertazzoni
Foreign Object in Pump or Spray System
Dishwasher makes loud grinding or rattling noises during wash or drain.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Broken glass or bones in circulation pump, Debris in drain pump impeller, Loose items hitting spray arms, Worn pump bearings
How to Fix / Troubleshooting
Safety first: Turn off the power and allow moving parts to stop before inspection.
- 1. Check interior: Remove the racks and inspect the sump area for foreign objects such as glass shards, toothpicks, or bones.
- 2. Inspect spray arms: Ensure the spray arms are not hitting tall items. Remove them and check for debris inside the arms.
- 3. Access pumps: From the bottom, remove the drain pump and circulation pump covers (if serviceable) and clear any obstructions from their impellers.
- 4. Listen after cleaning: Run a short cycle. If the grinding persists, the pump bearings may be worn, and the pump assembly should be replaced.
Avoid running the dishwasher with loud grinding noises to prevent further damage.
Advertisements
Repair Difficulty
Medium
3/5
Advertisements