Why is My Dishwasher Making Loud Sounds?

Your Dishwasher is designed to make life easier. Not to mention the fact that they are more hygienic than washing up by hand and when you open the machine in the morning all the dishes is dry and ready to put away.

If you own a dishwasher the probability is it’s hard to contemplate life without it. Furthermore most people would prefer not to the amount of washing up that you would be required to do if it develops a fault. If that happens, you’ll need to call a dishwasher repair company to repair the appliance.

Do You Use a Noisy Dishwasher?

It is absolutely normal to notice an array of separate sounds while your machine is running. The water filling the machine, the motor running, the dishwasher tablet drawer clicking open and the noise of the grinder are all normal sounds.

If you replace your dishwasher these noises may be different from your old machine, furthermore if you have installed a machine for the first time they may not be the sounds you were expecting.

Dishwasher Sounds Include:

A Water Sloshing or Swishing Noise

Water sloshing noises are absolutely routine, these noises can appear rather loud at first but you will soon get used to them.

Water will regularly produce a hissing sound as it comes through the water inlet valve as well as a sloshing or swishing sound as the spray arms spray it around the drum. The machine will also drain and refill each time it runs.

A Pounding Noise

A thumping sound may be the result of the spray arm bashing into an object that is dangling or an oversized dish. It could also be the drain line thumping into the wall or cabinets.This is more likely if your dishwasher has just been installed.

Despite the fact that these aren’t noises a dishwasher should be making it is easy to sort out with a little rearrangement.

Normal Humming and Buzzing Sounds

Humming noises are routine for plenty of machines. This is the sound of water pumping out of the machine. The humming is due to the drain pump vibrating as it operates and is perfectly regular, it could also pause as the pump helps push food debris as well as water out of the machine.

Buzzing may also be heard as a result of the fan that cools the pump motor while it is working.

Plenty of dishwashers also make use of a soft food grinder that could produce a humming sound intermittently while the dishwasher is on.

Beeping When the Cycle Finishes

Beeping noises when the cycles has finished are perfectly routine although they can be irritating, particularly if your machine finishes its cycle in the middle of the night. You should be able to turn the beeping off using the dishwasher controls. .

Squealing from a New Dishwasher

A new machine could make a squealing noise the first few times it is run due to there not being any water in the machine. This can also result in a rattling noise and may also occur if your machine hasn’t been used for a while.

You could avoid this by adding about a quart of water to the machine before turning it on for the first time or after you’ve not used it for a while.

Abnormal Dishwasher Noises

It’s not uncommon to get a little nervous if your machine starts making unusual sounds, however there is usually no cause for concern.

That being said, if your dishwasher starts making louder than normal or unusual sounds this can require additional investigation, especially when you’ve had the machine for a while and thus know what is normally sounds like.

Just remember, if you are going to start taking your machine apart you should always turn off the power first.

Loud or Unusual Grinding Sounds

Despite the fact that plenty of dishwashers could make a soft grinding noise as part of their regular operation if your dishwasher unexpectedly starts making a loud or unusual grinding noise this is not considered a good sign and needs checking out.

Most of the time the issue will be that something has become lodged in either the waste disposal or the drain impeller, and is knocking against the blades. in this case you need to stop the machine and have a look. If you find anything, remove it carefully before re-starting the machine.

An alternative possible reason is a lack of water in the drum, if this is the case you can check the water inlet valve to try to find out the reason the machine doesn’t have enough water.

Irregular Humming, Rattling or Buzzing Noises

While humming and buzzing noises can be perfectly routine they could also signal an issue. A broken pump may produce a high pitched humming or even squealing noise, if this happens it will invariably need to be replaced.

A broken motor may also make a rattling sound.

Rattling sounds emanating from a dishwasher are usually a result of plates or cutlery bashing against each other. Nevertheless, unusually loud banging can also be indicative of a water issue.

To check, run an empty cycle and if the rattling sound is still there this could be evidence of a damaged pump.

Beeping Mid-Cycle

Despite the fact that it is completely regular for a machine to beep when it is finished, beeping mid cycle is often your machine telling you there is a fault. Many dishwashers will alert you if they are opened mid-cycle and the cycle is paused. Or you could have to consult your owners manual.

Knocking, Clunking and Banging Sounds

A rhythmic clunking is more often than not the result of the arm bashing an obstruction inside the machine and therefore may be quickly rectified by rearranging your dishes. Items hanging down from the shelves is the most likely cause of this.

It can be worthwhile checking the arm is able to turn freely routinely to stop this from being an issue as it also means your dishes aren’t being cleaned effectively.

Banging, however, is more often a sign of a plumbing problem known as water hammer. The banging noise is due to the water pressure in the pipes and therefore usually occurs when the valves are opening and closing.

Water hammer may also cause rattling in the plumbing.

Regrettably there isn’t much you can do to resolve this without professional help and so it’s easiest to call an engineer if you suspect this is an issue.

Fixing your Dishwasher

Damaged pumps or motors are often responsible for strange loud noises emanating from your machine. Luckily these parts are replaceable so you shouldn’t need to replace your machine. You may even be able to replace the part on your own or you might need to phone a local repair person.

More Dishwasher Problems:

  • Dishwasher Leaking
  • Dishwasher Not Turning On
  • Dishwasher Not Draining
  • Dishwasher Not Drying