Are you tired of opening your dishwasher only to find that your dishes are still dirty? The frustration of discovering spots, leftover food, or streaks on your dinnerware is not only annoying but also a waste of time and resources. The good news is you don’t have to live with a Frigidaire dishwasher leaving dishes dirty! We’ll show you what causes poor cleaning performance, and how to get cleaner dishes in no time.
Reasons For a Frigidaire Dishwasher Leaving Dishes Dirty
We’ll explore the common causes of a Frigidaire dishwasher leaving dishes dirty and provide practical solutions to restore its performance.
Check the Basics
Before diving into more complex solutions, let’s cover some simple checks for a Frigidaire dishwasher not cleaning dishes:
- Ensure that the dishwasher is loaded correctly. Overcrowding or improper loading can restrict water flow and prevent proper cleaning.
- Use the appropriate dishwasher detergent and rinse aid for your model. Consult your owner’s manual for specific recommendations.
- Confirm that the spray arms can rotate freely and are not obstructed by large items.
- Check that the water supply is connected, and the water pressure is adequate.
Clean the Dishwasher Filter
A dirty or clogged filter can reduce the dishwasher’s cleaning ability and can explain your Frigidaire dishwasher leaving dishes dirty. Regularly remove and clean the filter to ensure optimal performance. Here’s how:
- Consult your owner’s manual for the location and removal process of your dishwasher’s filter. Usually you can find it at the bottom of your dishwasher and you can remove it by twisting.
- Rinse the filter under running water, using a soft brush to remove any debris.
- Reinstall the filter according to the manufacturer’s instructions.

Inspect and clean the spray arms
The spray arms play a crucial role in distributing water and detergent throughout the dishwasher. If they’re clogged or not spinning correctly, your dishes may remain dirty.
- Remove the spray arms according to the instructions in your owner’s manual.
- Check for any debris or blockages in the spray arm holes and gently clear them out using a straightened-out paper clip or pipe cleaner.
- Make sure the spray arm isn’t banging into dishes and that it has room to spin each cycle. If your dishwasher makes noise, this can also be the cause.
- Ensure that the spray arms spin freely before reinstalling them.
Check the water temperature
Your dishwasher’s water temperature should be between 120°F and 150°F for effective cleaning. A water heater that’s set too low, or a broken dishwasher heating element may cause the water temperature to be insufficient.
To check your dishwasher’s water temperature, you can use a kitchen thermometer to measure the temperature of the hot water at the sink closest to the dishwasher. Alternatively, you can run the dishwasher on the hottest cycle and use a thermometer to measure the temperature of the water in the dishwasher during the wash cycle.
Adjust your water heater’s settings if necessary, or consult a professional if you suspect a malfunction.
Investigate detergent issues
The quality and amount of detergent can affect your dishwasher’s cleaning performance and cause issues like when a Frigidaire dishwasher leaves residue on dishes. Keep these points in mind:
- Use fresh, high-quality dishwasher detergent and avoid using expired products.
- Follow the manufacturer’s instructions for the correct amount of detergent.
- Consider using detergent pods for consistent dosing and better cleaning results.

Address hard water problems
Hard water can leave mineral deposits on dishes and interfere with detergent effectiveness. If you live in an area with hard water:
- Use a water softener to reduce mineral content.
- Regularly clean your dishwasher with a descaling product to remove mineral buildup.
- Use a dish detergent formulated for hard water.
- Make sure you’re using a rinse aid.
The frustration of a Frigidaire dishwasher leaving dishes dirty is solvable with some attention to detail and routine maintenance. By following these tips and troubleshooting suggestions, you can restore your dishwasher’s performance and enjoy sparkling clean dishes once again. If the problem persists, it may be time to consult the professional dishwasher service technicians at Dave Smith Appliance.