Why is My Dishwasher Making Loud Sounds?

Appliances such as a dishwasher are there to be seen and not heard. Plus they are more hygienic than hand washing and when you open the machine at the end of the cycle everything is already dry and ready to put away.

If you are fortunate enough to use a dishwasher the chances are it’s unpleasant to contemplate the idea of not having one. And you would prefer not to the amount of dishes that you would need to do if it develops a fault. In this case, you’ll need to call a dishwasher repair company to fix the appliance.

Is Your Dishwasher Noisy?

It is absolutely normal to pick up a number of separate sounds while your machine is running. The water entering the machine, the motor working, the dishwasher tablet drawer opening and closing as well as the hum of the soft food grinder are all regular noises.

If you get a new dishwasher these sounds could be unlike your old machine, moreover if you have recently installed a machine they could not be the noises you were expecting.

Dishwasher Sounds Include:

The Sound of Water Sloshing or Swishing

Water sloshing sounds are perfectly regular, they might seem quite intrusive if you are not used to having a dishwasher although they are nothing to worry about.

Water will regularly produce a hissing noise as it enters the machine as well as a sloshing or swishing noise as the spray arms spray it around the machine. The machine will also drain and refill several times during the cycle.

A Pounding Sound

A pounding sound could happen because of the spray arm hitting against something that is hanging down or a large plate. It could also be the drain pipe banging against the wall or cabinets.This is more likely if your machine has just been installed.

Despite the fact that this isn’t a noise your dishwasher is designed to make it is simple to rectify with a little adjustment.

Routine Humming as well as Buzzing Sounds

Humming sounds are regular for lots of models. This is the sound of water pumping out of the dishwasher. The humming is due to the drain pump vibrating as it operates and thus is perfectly normal, it may also stop and start as the pump may not run continuously.

Humming may additionally be a result of the fan that cools the dishwasher motor while it is running.

A lot of machines also make use of a food disposal grinder that may produce a buzzing noise while the dishwasher is on.

Beeping at the End of the Cycle

Beeping noises when the cycles finishes are perfectly regular despite the fact they may be irritating, especially if your machine ends running at night. You should be able to switch this sound off using the control panel. .

Squealing Sound from a New Dishwasher

A new dishwasher can produce a squealing noise on first use because there is no water in the drum. This may also cause a rattling sound and can also occur if your dishwasher hasn’t been operated for a while.

You may stop this from happening by putting water in the drum before running it for the first time or when you’ve not used it for a while.

Worrying Dishwasher Noises

It’s not unusual to get a little on edge if your machine starts making strange noises, however there is usually no cause for concern.

However, if there are loud or unusual sounds coming from your machine this may require further investigation, especially when you’ve had the dishwasher for some time and thus know how it usually sounds.

Just remember, always cut the power to your machine before taking it apart.

A Loud or Unusual Grinding Sound

Although plenty of dishwashers may make a soft grinding noise as part of their routine cycle if your machine suddenly starts making a louder than normal or unusual grinding noise this is generally not a good sign and needs checking out.

The most likely cause will be an item such as an olive stone or corn kernel is caught in either the the waste disposal or the drain impeller, and therefore is grinding against the blades. If you suspect this might be the issue you should stop the machine and check. If you find anything, carefully remove it before re-starting the machine.

The other possible reason is a lack of water in the machine, if this is the case you should have a look at the water inlet to try to find out why the dishwasher is empty.

Abnormal Humming, Rattling or Buzzing Noises

While humming and buzzing noises could be perfectly regular they could also be a sign of an issue. A faulty motor may make a irregular humming or even squealing noise, if this happens it will usually need to be replaced.

A damaged motor could also produce a rattling sound.

Rattling sounds coming from a dishwasher are most likely caused by dishes or cutlery bashing into one another. Nevertheless, particularly noisy banging could also be indicative of a plumbing issue.

If you run an empty cycle and the rattling sound is still there this may be evidence of a damaged pump.

Beeping During the Cycle

Although it is absolutely regular for a machine to beep at the end of the cycle, beeping half way through the cycle is often your dishwasher telling you there is an error. Many dishwashers will beep if they are interrupted mid-cycle and the cycle is paused. Or you may have to have a look at your owners manual.

Knocking, Clunking and Banging Sounds

A regular knocking is more often than not due to the sprayer hitting an obstruction inside the machine and could be easily sorted by rearranging your dishes. Items hanging down from the shelves is the most likely cause of this.

It may be worthwhile checking the arm can rotate freely regularly before starting your machine to stop this from being an issue as it has a side effect of meaning your dishes aren’t being cleaned effectively.

Banging, however, is usually a result of a plumbing problem known as water hammer. The banging sound is due to the water pressure in the pipes and usually happens when the valves are opening and closing.

Water hammer could also be the reason behind banging in the pipes.

Unluckily there isn’t much you are able to do to solve this yourself therefore it’s recommended to call an engineer if you imagine this is an issue.

Fixing your Dishwasher

Damaged pumps as well as motors are often responsible for sudden loud sounds coming from your dishwasher. The good news is these parts can be replaced so you shouldn’t need a whole new dishwasher. You might even manage replace the part yourself or you might wish to phone a local repair person.

More Dishwasher Problems:

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