Common Dishwasher Faults and Troubleshooting Tips
Sometimes dishwashers will have an issue where they still operate, yet they do not work properly, and other times, they don’t work at all. It’s important to know the common issues that can arise with a dishwasher so that you’re able to troubleshoot the problem and either perform the repair yourself or know what to expect when you call a repairman. Proper maintenance can extend the life of your unit and ensure your dishes are sanitized effectively.
Dishwasher Will Not Start
When a dishwasher won’t even turn on, it can be frustrating and may lead you to believe a costly replacement is necessary. Before jumping to conclusions, start with the basics. Check your home’s circuit breakers and fuses to ensure the unit is receiving power. Additionally, examine the door latch assembly; if the dishwasher doesn’t “think” the door is securely closed, it will not initiate a cycle for safety reasons.
Internal components like the electronic control board or the motor can also be the culprit. If you have the right tools, such as a multimeter, you can test these components for continuity. However, if the motor hums but the cycle doesn’t start, there might be a physical blockage in the pump or a worn-out drive belt. Inspecting these areas requires a bit more disassembly but can save you a significant service fee.
Investigating Water and Drainage Issues
If your unit is powered on but not performing, check the water supply. Ensure the shut-off valve under the sink is fully open. You should also inspect the float switch located at the bottom of the tub; if it’s stuck in the “up” position, the dishwasher will think it’s already full and won’t allow more water to enter. Conversely, if the unit won’t drain, the culprit is often a clogged drain hose or a malfunctioning drain valve arm.
Understanding Secondary Performance Issues
Many dishwasher repairs involve small mechanical adjustments rather than total part failures. Identifying these early can prevent the need for “big buck” service calls. Common secondary issues include:
- Loud or unusual noises: Often caused by a spray arm hitting a dish or a failing pump motor.
- Dispenser failures: If the detergent isn’t being released, the dispenser door might be blocked or the wax motor has failed.
- Poor Cleaning: This is frequently due to clogged spray arm holes or a failing heating element that prevents water from reaching the necessary temperature to dissolve grease.
Taking the necessary troubleshooting steps helps you guarantee that you’ve tried everything ahead of calling a professional. If you find your dishes aren’t coming out spotless, see our guide on investigating poor cleaning performance. For more appliance diagnostic insights, visit our homepage to browse our library.