(832) 856-3222

Blog Detail

Home / Blog / Why Does the Dishwasher Break Down?

Why Does the Dishwasher Break Down?

The dishwasher is one of the most appreciated modern appliances in any home. It saves time, conserves water, and helps keep the kitchen tidy. But like any appliance, dishwashers can and do break down often at the most inconvenient times.

If you’ve ever opened the door to find dirty dishes after a full wash cycle, water pooled at the bottom, or strange noises coming from inside, you’re not alone. Many homeowners face dishwasher problems at some point.

In this blog, we’ll explore why dishwashers break down, the most common causes, and what you can do to prevent these issues from happening.

1. Clogged Filters and Drains

One of the most common reasons dishwashers break down is a clogged filter or drain. Over time, food particles, grease, and debris collect in the filter and can block the water from draining properly. This leads to standing water, bad smells, and inefficient washing.

Signs of a clogged filter or drain:

  • Water pooling at the bottom after a cycle
  • Foul odors
  • Dishes coming out dirty or greasy

What to do: Clean the filter regularly—at least once a month. Make sure to scrape large food scraps off dishes before loading them.

2. Faulty Door Latch or Door Seal

Your dishwasher won’t run if the door isn’t sealed properly. A broken latch or worn-out gasket can prevent the cycle from starting or cause water to leak during the wash.

Signs of door problems:

  • Dishwasher won’t start
  • Water leaking onto the floor
  • The door feels loose or doesn’t click shut

What to do: Inspect the door latch and gasket for wear or damage. If the seal looks cracked or dirty, it might need cleaning or replacement.

3. Worn-Out Spray Arms

Dishwashers clean dishes by spraying water from rotating arms inside the unit. Over time, these spray arms can get clogged with mineral deposits or food debris. If the water can’t flow freely, your dishes won’t get properly cleaned.

Signs of spray arm issues:

  • Dirty dishes after a full cycle
  • Uneven cleaning (e.g., top rack dishes still dirty)
  • Low water pressure sounds inside the dishwasher

What to do: Remove the spray arms and clean them out every few months. If they’re cracked or damaged, it’s time for a replacement.

4. Malfunctioning Water Inlet Valve

The water inlet valve controls how much water flows into the dishwasher. If it’s broken or clogged, your dishwasher might not fill properly—or at all.

Signs of water inlet valve failure:

  • Dishwasher not filling with water
  • Very long or incomplete wash cycles
  • Unusual humming or buzzing noises

What to do: This is a job for a professional technician. Replacing a faulty water inlet valve is best handled by someone with appliance repair experience.

5. Heating Element Issues

The heating element is what helps the dishwasher dry the dishes and sometimes helps heat the water during the wash. If it breaks down, your dishes might come out wet or greasy.

Signs of a faulty heating element:

  • Dishes come out cold and wet
  • Cloudy or greasy residue on dishes
  • Incomplete wash cycles

What to do: If you suspect the heating element is damaged, contact a technician. It may need testing and replacement.

6. Faulty Pump or Motor

The pump and motor are responsible for circulating water through the dishwasher. If the motor burns out or the pump fails, your dishwasher may stop mid-cycle or not clean at all.

Signs of pump or motor problems:

  • Dishwasher makes loud grinding or humming noises
  • Water doesn't spray properly
  • Cycle stops abruptly or doesn’t finish

What to do: These are serious issues that typically require professional diagnosis and repair.

7. Electrical Problems

Sometimes, the issue is as simple as a blown fuse, tripped breaker, or faulty control board. Your dishwasher may appear completely dead or show flashing error lights.

Signs of electrical issues:

  • Dishwasher won’t power on
  • Control panel doesn’t respond
  • Flashing lights or error codes

What to do: Check your home’s electrical panel first. If power isn’t the issue, consult a professional to inspect the control board and wiring.

8. Overloading the Dishwasher

We’re all guilty of trying to fit “just one more plate,” but overloading can cause poor water circulation and reduce cleaning efficiency. It can also damage spray arms or racks over time.

Signs of overloading:

  • Dishes consistently come out dirty
  • Broken or bent racks
  • Spray arms don’t spin freely

What to do: Load the dishwasher according to the manufacturer’s instructions. Make sure spray arms have room to rotate.

9. Hard Water Build-up

If you live in an area with hard water, your dishwasher may suffer from limescale build-up over time. This can clog parts, reduce efficiency, and even cause long-term damage.

Signs of hard water issues:

  • White residue on glasses and silverware
  • Filmy dishes after washing
  • Mineral build-up on spray arms or heating element

What to do: Use dishwasher cleaners or descalers regularly. Consider installing a water softener if hard water is a recurring issue.

10. Poor Maintenance and Irregular Cleaning

Dishwashers are not truly “maintenance-free.” Without regular care, small issues can turn into major breakdowns.

Maintenance tips:

  • Clean the filter and spray arms monthly
  • Wipe down the door gasket
  • Run a cleaning cycle with vinegar or a dishwasher cleaner
  • Avoid using too much detergent

Pro tip: Schedule professional maintenance once a year to extend your dishwasher’s lifespan.

Your dishwasher works hard every day and when it stops working, it can cause real disruption in your home. Fortunately, most dishwasher problems are preventable with regular maintenance and good habits.

By understanding the common reasons why dishwashers break down, you’ll know what to look for and when to call in help. Whether it’s a clogged filter, a worn-out heating element, or a simple loading mistake, staying informed helps you keep your appliance running smoothly.