How to tell if dishwasher arms are spinning: a step-by-step diagnostic

Dishwashers are an essential part of our modern kitchens, providing convenience and efficiency in cleaning our dishes. However, when the dishwasher arms stop spinning, it can lead to dishes not being cleaned properly. This can be a frustrating and time-consuming issue to resolve. In this blog post, we will provide a comprehensive guide on how to tell if dishwasher arms are spinning and offer troubleshooting tips to resolve the problem.

How to Manually Check Dishwasher Arm Rotation

1. Power Down the Dishwasher: Unplug the dishwasher or turn off the power at the circuit breaker to ensure safety.

2. Open the Dishwasher Door: Carefully open the dishwasher door and remove any dishes or racks that may obstruct your view.

3. Locate the Dishwasher Arms: There are typically two arms in a dishwasher: the upper arm and the lower arm. They are located at the bottom and top of the dishwasher tub.

4. Spin the Arms Manually: Reach into the dishwasher and gently spin the upper and lower arms by hand. If they spin freely without any resistance, they are likely functioning properly.

How to Check Dishwasher Arm Rotation During a Cycle

1. Start a Dishwasher Cycle: Place a few dishes in the dishwasher and start a short wash cycle.

2. Listen for Spraying Noises: As the dishwasher runs, listen for the sound of water spraying from the dishwasher arms. If you hear spraying noises, it indicates that the arms are rotating.

3. Check for Water Coverage: Open the dishwasher door slightly and observe the dishes during the wash cycle. If the dishes are getting wet and clean, the dishwasher arms are likely spinning and functioning properly.

Troubleshooting Dishwasher Arm Rotation Issues

1. Clogged Spray Holes: Over time, food particles and mineral deposits can clog the spray holes in the dishwasher arms. This can restrict water flow and prevent the arms from spinning properly. To clean the spray holes, use a toothpick or a small brush to gently remove any debris.

2. Faulty Water Pump: The water pump is responsible for circulating water through the dishwasher arms. If the water pump is faulty, it can lead to insufficient water pressure and prevent the arms from spinning. To check the water pump, listen for a humming noise during the wash cycle. If you don’t hear any noise, the water pump may need to be replaced.

3. Blocked Drain: A blocked drain can cause water to back up into the dishwasher and prevent the arms from spinning. To clear a blocked drain, check the dishwasher filter and remove any debris or food particles. You can also run a drain cleaning solution through the dishwasher.

4. Worn or Broken Gears: The dishwasher arms are connected to gears that drive their rotation. Over time, these gears can wear out or break, preventing the arms from spinning. To inspect the gears, you may need to remove the dishwasher arms and check for any damage or wear.

5. Faulty Motor: The motor is the main component that powers the dishwasher arms. If the motor is faulty, it can prevent the arms from spinning. To check the motor, use a multimeter to test for continuity. If the motor is not receiving power or is not functioning properly, it may need to be replaced.

When to Call a Professional

If you have tried the troubleshooting tips above but the dishwasher arms are still not spinning, it is recommended to call a qualified appliance repair technician. They have the expertise and tools to diagnose and repair the issue effectively.

Final Thoughts

By following the steps outlined in this guide, you can effectively determine if your dishwasher arms are spinning and troubleshoot any issues that may be preventing them from rotating properly. Remember, regular maintenance and cleaning of your dishwasher can help prevent these problems from occurring in the first place. If you encounter any persistent issues, do not hesitate to contact a professional for assistance.

Quick Answers to Your FAQs

1. Why is my dishwasher not spraying water from the arms?

There could be several reasons: clogged spray holes, faulty water pump, blocked drain, or worn/broken gears.

2. How often should I clean my dishwasher arms?

It is recommended to clean the dishwasher arms every few months or as needed to prevent clogging and ensure optimal performance.

3. Can I replace the dishwasher arms myself?

Yes, replacing dishwasher arms is typically a straightforward task that can be done with basic tools. However, refer to your dishwasher’s user manual for specific instructions.

4. How do I reset my dishwasher?

Resetting a dishwasher varies depending on the model. Consult your user manual for specific instructions.

5. What are the signs of a faulty dishwasher motor?

The dishwasher may not start, make unusual noises, or fail to drain properly.