The Hidden Cause Of Your Dishwasher Arms Not Spinning (and How To Fix It)

A dishwasher is an indispensable appliance in any modern kitchen, but when its arms refuse to spin, it can leave you baffled and with a sink full of dirty dishes. This blog post delves into the common causes behind this frustrating issue and provides practical solutions to get your dishwasher back in tip-top shape.

Clogged Spray Arm Holes

The spray arms are responsible for distributing water throughout the dishwasher. If the holes in the arms become clogged with food debris or mineral deposits, the water pressure will be reduced, causing the arms to stop spinning. To resolve this, remove the spray arms and soak them in a vinegar solution for several hours. Use a toothpick or pipe cleaner to gently dislodge any remaining debris.

Obstructed Impeller

The impeller is a small component located at the bottom of the dishwasher that drives the spray arms. If the impeller becomes jammed with food particles or other debris, it can prevent the arms from spinning. Check the impeller for any obstructions and remove them carefully.

Faulty Drive Motor

The drive motor is responsible for providing power to the impeller. If the motor fails, the impeller will not be able to rotate, resulting in stationary spray arms. To test the drive motor, use a multimeter to check for continuity. If the motor is faulty, it will need to be replaced.

Damaged Drive Belt

Some dishwashers use a drive belt to connect the drive motor to the impeller. If the belt becomes worn or damaged, it can slip or break, preventing the impeller from spinning. Inspect the drive belt for any signs of wear or damage and replace it if necessary.

Worn Out Pump

The pump is responsible for circulating water throughout the dishwasher. If the pump fails, there will be no water pressure to drive the spray arms. Check the pump for any leaks or unusual noises and replace it if necessary.

Control Board Malfunction

The control board is the brain of the dishwasher, controlling all of its functions. If the control board malfunctions, it can send incorrect signals to the spray arms, causing them to stop spinning. Reset the control board by unplugging the dishwasher for a few minutes and then plugging it back in. If the problem persists, the control board may need to be replaced.

How to Prevent Dishwasher Arms from Not Spinning

• Regularly clean the spray arms and impeller to prevent clogging.
• Avoid overloading the dishwasher with dishes.
• Use a rinse aid to reduce the formation of mineral deposits.
• Run the dishwasher on a hot cycle with a dishwasher cleaner once a month.
• Call a qualified appliance repair technician for any major repairs or troubleshooting.

Troubleshooting Tips

• If the dishwasher arms are only spinning slowly, check the water pressure to the appliance.
• If the spray arms are spinning but not spraying water, check the water inlet valve and make sure it is open.
• If the dishwasher is making a loud noise when the arms are spinning, it could indicate a problem with the bearings or gears.

Questions We Hear a Lot

Q: Can I fix a dishwasher arm that is not spinning myself?

A: Yes, you can try to fix some of the common causes, such as unclogging the spray arm holes or checking the impeller for obstructions. However, for more complex issues, it is recommended to call a qualified appliance repair technician.

Q: How often should I clean the dishwasher arms and impeller?

A: It is recommended to clean the dishwasher arms and impeller every few months, or more frequently if you notice any signs of clogging or reduced water flow.

Q: What type of cleaner should I use to clean the dishwasher arms and impeller?

A: Use a dishwasher cleaner specifically designed for this purpose. Avoid using harsh chemicals or abrasive cleaners.