How to Identify a Noisy Dishwasher Problem

Listed below are some of the most common reasons why a dishwasher may make excessive noise. This may be used to help advise you how to fix it.

For information on how to tackle and resolve faults and problems on a wide range of appliances see our other articles ».

Noisy During Washing:

If the dishwasher makes a loud humming noise or squeals as the water is sprayed the fault is likely to be the wash pump. This can go noisy as the bearings fail or will make a loud hum if jammed. If jammed, check if any foreign object has got into the pump, and if it has, remove it. Failing to remove debris from the pump can lead to other faults occurring with the appliance.

Noisy (buzzing noise) a Short While into the Wash Cycle:

This may be the solenoid that opens the dispenser to release the detergent. Check if the noise occurs when the dispenser is opening, and if there is excessive noise, it may be necessary to replace the detergent dispenser.

See our video: Removing a Dispenser in a Dishwasher »

Noisy When Emptying:

This is usually something in the drain pump chamber and the most likely cause is a shard of glass from a glass breaking during a wash. To prevent this occurring always collect the pieces if a glass breaks and confirm all pieces are removed by "rebuilding" the glass.

To check this remove the pump and rotate the impeller, this is likely to rotate smoothly but will only stop in a number of positions due to the "poles" of the permanent magnet in the motor. This is normal.

What you'll need: dishwasher spares »

If on inspection the cause of the fault is not immediately apparent, most people will require the assistance of a trained professional.

We recommend: Repaircare ».

To get the best results from your dishwasher rinse and brush off all food particles before loading the machine.

* All information provided is a guide only. BuySpares accepts no liability for any problems occurred while attempting any advice shown. If in any doubt contact a qualified repair service.