Dishwasher is making unusual noises

Last updated 18/02/2022 10:06


  • Dishwasher is making unusual noises

Applies to

Freestanding Dishwashers

Built in Dishwasher


1. Humming noise just after starting:

There is no cause for concern, the dishwasher always start a washing cycle with a pumping program, which produces this noise.

2. Loud noise or knocking:

There is no cause for concern, the noise is produced by the detergent dispenser opening.

3. Beeping sound during pumping:

Add a drop of detergent (not too much!) in the detergent dispenser to lubricate the pumping mechanism. 

4. Squealing 

This is often heard in brand new dishwashers and it occurs during the first few times that you run it. Nothing to worry about here. 

5. Grinding 

The motor in a dishwasher may make grinding noises when it goes through specific cycles. This is normal

6. Whistling or Clunking noise:

This could be that the spray arms are hitting items within the dishwasher such as long spoons or saucepan handles. Check positioning of items within dishwasher.  To check that this is indeed the source of the problem, we recommend first removing the lower basket then testing the operation of the appliance again. If the problem persists, remove the upper basket next. If the problem still occurs after that, you will need to consider replacing your spray arms.

If you dishwasher is making noise when the appliance is turned off, we recommend a visit from a service engineer. 

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