Dishwasher Repair and Troubleshooting Tips

Dishwashers

You have come to the source for keeping your Dishwasher and other appliances running like new! Below is some very beneficial information about how dishwashers work, as well as what can go wrong with them. You will find answers to many common questions, and learn how to properly maintain your dishwasher. We provide many repair and service tips about dishwashers. A handy do-it-yourselfer can use this valuable information to determine what's wrong with their dishwasher. The DIY can also use this knowledge to repair their dishwasher using the appropriate appliance parts. We provide a model lookup feature and an easy to use appliance parts finder to make your repair jobs easier. We also have appliance cleaning products, and an easy to use shopping cart.

The follaowing information should help you repair your Dishwasher. The information applies to ppliance repair service on most makes and models including: Admiral, Amana, Bosch, Crosley, Electrolux, Estate, Frigidaire, Gaggenau, General Electric, Gibson, Haier, Hotpoint, JC Penney, Jenn Air, Kelvinator, Kenmore, Kitchen Aid, Magic Chef, Maytag, Montgomery Ward, RCA, Roper, Sears, Tappan, Westinghouse, Whirlpool, White-Westinghouse and more.

Warning! Reduce your risk of personal injury or death. Disconnect your appliance from its power source before you start any troubleshooting or repairs. Danger of electric shock when working on electric appliances. Appliances have many razor-like machined edges; use caution when working inside any appliance.

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How do Dishwashers work?

Most dishwashers are designed with very similar set ups. The information below will help you understand how most dishwashers work. Before looking at the problems with dishwashers, it is important that you have an understanding of how they work.

When you open the dishwasher, you will normally see some standing water in the bottom of it. This water helps to keep the seals from drying out. When you first start your machine, it will drain this water first, and then refill it with fresh water.

After you load your dishwasher, you set the controls to the settings you need for the dishes you want to wash. The selector switch lets you choose the length of the wash cycle, the water temperature, and the drying temperature. You’ll probably want to check your owner’s manual to determine the settings you need to use.
Once it is loaded and you have the settings where you want them, you want to make sure that the door is latched and locked properly. This will engage the door switch and keep the water from leaking out. If the door switch is not engaged, the dishwasher will not operate.

Turn on the dishwasher with the start switch. At the bottom of the dishwasher, behind a panel, is a water-inlet valve that controls the flow of water into the dishwasher. When the timer gets to the right spot, it sends power to the valve which causes it to open and let water into the dishwasher sump. Just above the floor, on the inside, is a small plastic cylinder that floats up as water fills the dishwasher. When the water reaches the proper height, the float switch tells the valve to close. Some models of dishwashers may also have a heating element in the sump. During these cycles, most dishwashers will pause as they wait for the water to reach the desired temperature. Sometimes, the water entering the dishwasher is too cool, and the heating element can take up to a half an hour to heat the water to the correct temperature. The heating element in the bottom of the dishwasher cabinet will heat the water to about 140-150 degrees Fahrenheit if it's not already hot enough.
When the timer calls for it, a bi-metal switch or a wax motor actuates the detergent cup, releasing the detergent into the wash water. The timer switch is usually mechanical, and is motor driven with cams to open and close switches. Some models may use an electronic control circuit board to accomplish the same thing. The timer tells the dishwasher what to do next by sending the instructions and power to the dishwasher’s parts at the right time.

Many dishwashers employ a two-way motor. When the motor turns one way, it pumps the water-soap mix through the sprayer arms which spin around from the water pressure similar to a water sprinkler and sprays the dishes. The water goes back into the sump where the larger food particles are filtered out. The water is pumped back up to be sprayed again, and this process is repeated until the cycle is ended. When the motor turns the other way, it pumps the water out through the drain. If the motor in your dishwasher only turns in one direction, then an actuator or solenoid unit moves a valve to divert the water to the spray arms or to the drain, whichever is needed at the time.

Some dishwashers, especially newer ones, make use of a soil sensor to determine how clear the water is during rinse and wash cycles. This can save you electricity and water, as well as give you cleaner dishes. The wash water then gets drained and clean water is sprayed over the dishes to rinse them. If your dishwasher is able to use rinse aids, now is the time that your controls would release the rinse aid into the rinse water. The rinse water is then drained, and then the heating element heats the air inside the dishwasher to help dry the dishes. Some dishwashers have a fan to help in this drying process.

Most dishwashers have a thermostat that monitors the wash and rinse water temperature, as well as the drying temperature. Thermostats help to protect the dishwasher, dishes, and you or your children by controlling the heating element that heats the water or the air in the dishwasher. The thermostat will turn off the heating element when it has reached the pre-set temperature.

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Common Questions about Dishwashers (FAQs)

Here are some common questions about Dishwashers

1. Why does an error code display?
2. Why doesn't my Dishwasher work at all?
3. Why are the dishes still dirty?
4. Should I pre-wash my dishes?
5. What's the best way to load the Dishwasher?
6. Why aren't my dishes dry when the Dishwasher finishes?
7. Why does the Dishwasher seem like it is not advancing?
8. Why is there no water entering the Dishwasher?
9. Is Dishwasher detergent safe for my family?
10. Why doesn't the detergent cup open?
11. Why won't the dish water drain?
12. Why is my Dishwasher leaking?
13. Why is there water dripping from a vent?
14. Why doesn't my Dishwasher door close and latch?
15. How do I get the best cleaning from my Dishwasher?
16. What should the water temperature be?
17. Why is my Dishwasher beeping and lights blinking?
18. Why is the inside of my Dishwasher discolored or stained?
19. Why does my Dishwasher have an odor?
20. Why is my Dishwasher filling with water when it is not being used?
21. Why is my Dishwasher making noise?
22. How much and what kind of detergent should I use?
23. What can I do to get rid of spots on my glassware?
24. Why is my glassware scratched and cloudy looking?
25. Why do my racks roll in or out when the door is open?
26. What can I do to fix my rusty racks?
27. What do all the indicator lights mean?
28. Why do I smell plastic burning in my Dishwasher?
29. What is the correct procedure for starting my Dishwasher?
30. How do rinse aids work?
31. What is Dishwasher salt?
32. Why aren't the sprayer arms turning?
33. Why is there still detergent in the dispenser when the Dishwasher is done?

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