Dishwashers Problems - How to Fix Noise

My Siemens dishwasher makes a strange noise

3 different noises are shown below to resolve the problem.

Most of the time noises coming from your dishwasher during the wash cycle are completely normal. Below are 3 of the most common noises and how to determine whether they’re commonplace or a sign of an issue.

Beeping noise
Grinding or buzzing noise
Knocking or rattling noise

Beeping noise

When a programme ends, an audible beep will sound. You can choose to disable or adjust the volume of this beep . For more information, please check your instruction manual.

Grinding or buzzing noise

A grinding or buzzing noise is usually nothing to worry about. You can hear your dishwasher grind or buzz when it forces water down the drain. If the sound is very loud, check your pump impeller.
To do this, you will need to remove the lower basket, spray arm and filter unit.

To find out more about how to unblock your dishwasher pump, follow these steps:

Check the pump of your dishwasher

Follow the instructions in the video to clean the filter system of your dishwasher.

Step-by-step guide: How do I unblock my dishwasher pump?

Siemens dishwasher switch on dishwasher and disconnect it from power supply.

Step 1

Switch off the dishwasher and disconnect the dishwashing machine from the power supply.

Step 2

Remove the bottom dish rack to provide better access to the filter.

Step 3

Take out the lower spray arm.

Step 4

Unlock the filter unit found at the base of the dishwasher.

Siemens Dishwasher carefully pull the filter out.

Step 5

And carefully pull it out.

Siemens remove as much of the water trapped in the dishwasher as possible

Step 6

Remove as much of the water trapped in the dishwasher as possible. A good sponge can help.

Siemens dishwasher's pump: to wear gloves as pieces of glass can block the pump

Step 7

Pieces of glass may block the pump, that’s why we recommend wearing some gloves.

Step 8

Separate the unit by carefully unscrewing the cylindrical filter first.

Info: The pump covers on some models can be removed by using a manual screwdriver (never use an electric one). Any obstructions should then be removed in the same way.

Siemens Dishwasher: clean and rinse both filter units under running water until it is free of residues.

Step 9

Clean and rinse both filter units under running water until it is free of residues. You can use a small brush to gently clean the inside of the filter and remove smaller pieces of debris. Do not use anything abrasive as this can damage the filter.

Step 10

Using a tea spoon, prise off the pump cover.

Step 11

Grip the cover by the lug and pull it upwards until it resists and then pull forwards.

Step 12

Check the pump for any foreign objects and remove any deposits.

Siemens Dishwasher: make sure you reinstall the filter system correctly.

Step 13

Place the sieves and filter unit back into position, make sure you reinstall the filter system correctly.

Step 14

Ensuring the arrows align.

Siemens Dishwasher: Replace spray arm and the basket and your dishwasher is ready for use and test it.

Step 15

Replace spray arm and the basket and your dishwasher is ready for use. Reconnect the power supply. Set the dishwasher on its quickest cycle to test whether it drains and the problem is solved.

Knocking or rattling noise

The cause can be a number of things:

1. Spray arm is hitting the utensils as the dishwasher has been loaded incorrectly

To resolve this, position the utensils so that the spray arms can rotate fully without being obstructed.

Follow these 8 tips on how to load your dishwasher correctly:

Top rack.

1. Safe space for cups, glasses and small bowls. Ensure that you leave enough space between the items. This is essential as obstruction can cause breakage and grease stains. Tall champagne and wine glasses should go in the bottom rack, where they can be placed in a secure glass holder.

2. Place dishwasher-safe plastics in the top rack to keep them away from exposure to high temperature.

Bottom rack.

3. Larger items such as dishes, salad bowls and pans belong in the bottom rack , where there’s more space. You can even add baking trays, grill racks or fridge shelves.

4. There’s no need to pre-rinse dishes when loading the appliance, as the rinse programme has this covered. However, you should always scrape off any big chunks of food that can block the dishwasher filter.

5. Serving plates and chopping boards go to the side . This is because large items can easily obstruct the spray arms and block the water flow. While you can clean wooden chopping boards inside the dishwasher, we recommend hand-washing to avoid any splintering.

6. Clip to clean. You can clip baby bottles and other small plastic items such as lids and cups for a more stabilised wash.

Cutlery.

7. Place knives sharp-edge down. This will help to avoid any injury when unloading the dishwasher, as well as stop bacteria from coming into direct contact with the blade.

8. Mix up the cutlery, if your appliance is not fitted with a cutlery draw. Forks and spoons in the cutlery basket should be mixed to prevent nesting and blocking off the water. If your dishwasher is fitted with a cutlery draw, you should place same items alongside each other to conserve space.

2. If there is a low load, the water jets can strike the washing tank directly

Load the dishwasher with more utensils or distribute the utensils evenly.

3. Light utensils or baby bottles can move around during the wash cycle

These would need to be rearranged tightly if possible, or clipped to the dishwasher basket.

Have you checked the tips and the issue isn’t solved?

If you have followed the information above but you're still having problems with your Siemens dishwasher, then you might want to have it checked out by a Siemens professional.