Why Is My Dishwasher Just Humming? Here’s The Answer!
What To Know
- A lack of water supply to the dishwasher can prevent it from initiating the wash cycle.
- A humming noise when the dishwasher is empty can indicate a faulty pump or motor.
- The cost of repairing a humming dishwasher varies depending on the cause of the problem and the labor rates in your area.
If your dishwasher has suddenly become a monotonous hummer, leaving your dishes unwashed and you frustrated, you’re not alone. This common issue can be a source of great annoyance, but fear not! In this comprehensive guide, we’ll delve into the possible reasons behind this perplexing problem and provide practical solutions to get your dishwasher back in tip-top shape.
1. Lack of Water Supply
Symptoms: Dishwasher hums but no water enters the tub.
Cause: A lack of water supply to the dishwasher can prevent it from initiating the wash cycle. This can be caused by:
- Clogged water supply line
- Closed water supply valve
- Faulty water inlet valve
Solution:
- Check the water supply line for kinks or clogs.
- Ensure the water supply valve is fully open.
- If the problem persists, replace the water inlet valve.
2. Drain Issues
Symptoms: Dishwasher hums but water doesn‘t drain out.
Cause: Clogs in the drain hose or pump can prevent water from draining properly, causing the dishwasher to hum indefinitely. This can be caused by:
- Food debris or grease buildup
- Foreign objects stuck in the drain hose
Solution:
- Clean the drain hose by removing any debris or objects.
- Check the drain pump for any blockages.
3. Electrical Problems
Symptoms: Dishwasher hums but no lights or buttons respond.
Cause: Electrical issues can render the dishwasher unresponsive, causing it to hum but not function. This can be caused by:
- Faulty power cord
- Blown fuse or tripped circuit breaker
- Damaged electrical components
Solution:
- Check the power cord for damage and ensure it’s properly plugged in.
- Reset the fuse or circuit breaker.
- If the problem persists, contact a qualified electrician.
4. Control Board Failure
Symptoms: Dishwasher hums but the display shows an error code or no lights.
Cause: A faulty control board can disrupt the dishwasher’s communication system, causing it to hum but not initiate the wash cycle. This can be caused by:
- Power surge
- Water damage
- Component failure
Solution:
- Reset the dishwasher by unplugging it for 10 minutes.
- If the problem persists, replace the control board.
5. Faulty Motor
Symptoms: Dishwasher hums but the impeller doesn‘t spin.
Cause: A faulty motor can prevent the dishwasher from circulating water and washing dishes. This can be caused by:
- Worn or damaged motor bearings
- Electrical burnout
Solution:
- Replace the faulty motor.
6. Overloaded Dishwasher
Symptoms: Dishwasher hums but water doesn‘t circulate properly.
Cause: Overloading the dishwasher can prevent the water from circulating effectively, causing the dishwasher to hum but not wash dishes properly. This can also lead to other issues such as leaks.
Solution:
- Avoid overloading the dishwasher.
- Arrange dishes in a way that allows water to flow freely.
7. Clogged Filter
Symptoms: Dishwasher hums but water doesn‘t drain properly.
Cause: A clogged filter can prevent water from draining out of the dishwasher, causing it to hum indefinitely. This can be caused by:
- Food debris or grease buildup
- Objects stuck in the filter
Solution:
- Clean the filter regularly by removing any debris or objects.
Wrapping Up: A Dishwasher That Sings Again
By following the troubleshooting tips outlined above, you can effectively diagnose and resolve the issue of your dishwasher humming but not washing. Remember, it’s always advisable to consult a qualified appliance repair technician if you encounter any complex electrical or mechanical problems.
Frequently Asked Questions
Q: Why does my dishwasher hum when it’s empty?
A: A humming noise when the dishwasher is empty can indicate a faulty pump or motor.
Q: Can I fix a humming dishwasher myself?
A: Some basic troubleshooting steps, such as cleaning the filter or checking the water supply, can be attempted by homeowners. However, for more complex issues, it’s best to contact a professional.
Q: How much does it cost to fix a humming dishwasher?
A: The cost of repairing a humming dishwasher varies depending on the cause of the problem and the labor rates in your area. It can range from $100 to $500 or more.
Q: Can a humming dishwasher be dangerous?
A: In most cases, a humming dishwasher is not dangerous. However, if the humming is accompanied by other symptoms such as sparks or smoke, it’s important to unplug the appliance and call a technician immediately.
Q: How can I prevent my dishwasher from humming in the future?
A: Regular maintenance, such as cleaning the filter and checking the water supply, can help prevent humming issues. Additionally, avoid overloading the dishwasher and use the recommended amount of detergent.
