Dishwashers are an essential convenience in modern kitchens. However, issues can still arise—even with high-end models from premier manufacturers like Asko or Cove.
Before calling for service, C&W Appliance Service recommends trying some basic dishwasher maintenance and troubleshooting. What sometimes seem to be major problems might require simple fixes.
#1 Dishwasher cycle runs too long
Unless the water entering the dishwasher is already hot, your machine needs to warm it up. This can extend the wash cycle, even in top-brand machines. Run the kitchen faucet briefly to allow the water to reach the desired temperature. This helps the dishwasher operate more efficiently and complete the cycle faster.
Running a hot water cycle before starting the dishwasher can improve cleaning efficiency and reduce overall run time. If your machine continues to run excessively long, it may be time to consult a dishwasher repair service near you.
#2 Dishes come out dirty
Detergents
Ecological concerns have forced dishwasher detergent manufacturers to cease using phosphates, which used to be the main cleaning agents. Now, both liquid and powder detergents use more environmentally friendly chemicals. However, some of these new liquid detergents can cause rust with long-term use. And the chemicals in powder detergents can lose effectiveness when exposed to air.
C&W Appliance Service recommends special cleaning tablets like those made by Finish. These not only help clean dishes effectively but also work on calcium deposits that cause white streaks on glassware. If you own a Cove dishwasher, using the manufacturer-recommended cleaner ensures your appliance continues working properly.
Dishwasher Parts
If detergent is not the cause, inspect the spray arm and filters for potential blockages. Clean the filters located at the bottom of the machine to maintain optimal performance. While manufacturers recommend doing this at least once a year, we suggest more frequent cleaning. Food particles can accumulate and block water flow, causing dirty dishes.
Also consider removing and thoroughly cleaning the spray arm. Food particles often lodge in the small holes, reducing spray coverage. The arms are removable—just rinse, clean out visible bits of food, and reinstall. Check your owner’s manual for specific instructions.
Dish Crowding
Avoid overloading the dishwasher to ensure effective cleaning performance. Overloading the bottom rack can block water flow and the detergent dispenser. Space dishes properly to ensure thorough washing and drying. This step alone can eliminate your issue of dishwasher not cleaning.
#3 Dishes and/or glassware have scratches
Pre-washing dishes too thoroughly before loading often causes this issue. Without food residue, dishwasher detergent can etch dishes and delicate glassware.
Simply scrape off excess food but avoid fully pre-washing. Rinsing off food particles is enough to prevent buildup while preserving your dishes.
#4 Dish and glassware have spots
Manufacturers design modern dishwashers, including high-end Asko models, for energy efficiency. They use less electricity and typically do not have high-wattage heaters for drying. To enhance drying performance, consider using a rinse aid such as Lemishine. This helps reduce spotting and also removes calcium deposits inside the tank.
A glass of vinegar can also help clean out buildup in home appliance water tanks. Adjust your rinse aid dispenser using the dial inside the door—start low and increase if needed to avoid foaming. For persistent spotting, consider running a regularly clean cycle using a dishwasher cleaner.
#5 Water pools at the bottom of dishwasher
Faucet Issues
If you see standing water, check both the filters and the air gap between the dishwasher and the sink. Even a small bit of food or seed can block the air gap, preventing water from draining and causing pooling at the bottom.
To inspect, pull off the silver cap near the faucet and remove the plastic insert. Clean out any debris and reassemble. If you’re still dealing with dishwasher not draining issues, it’s best to consult a provider of dishwasher repair near you.
Water Valve Problems
If the machine continues to run after completing a cycle, there may be a water valve issue. Asko dishwasher repair often involves checking the leak sensor at the base. When triggered, the unit activates the drain pump to offset excessive foaming or valve malfunction.
In this case:
- Do not turn off the power.
- Call a repair service professional for diagnosis and repair.
#6 The dishwasher has odors
Odors usually result from improper draining or low water temperatures. Food debris can build up at the bottom or in the gasket around the door.
Clean this area thoroughly, and ensure the drain is not clogged. Check the garbage disposal to confirm water is flowing freely. If the smell persists and water isn’t draining, it’s time to call for appliance repair service.
For persistent odors, using a dishwasher cleaner on a hot water cycle can freshen the unit.
The C&W Appliance Service team offers appliance repair for both premier and major dishwasher brands. Our services include Asko dishwasher repair in Dallas and surrounding areas. Whether you’re searching for dishwasher repair service near you or washer repair service near you, we have you covered. Our skilled technicians are always ready to help.
We specialize in maintaining different types of appliances like washing machines, refrigerators, dishwashers, and more. Trust our team to keep your appliances working properly with expert service and lasting solutions.
When you want your dishwasher repair done right the first time, contact C&W Appliance Service today!
