No company has made a dishwasher that can keep dishes from drying. Its heating element is supposed to equip it with that capability. Yet you would not find dry dishes in your Kitchenaid dishwasher, if there were no components that could somehow enhance the dish-heating abilities of that one element.
Of course if any of those components were to fail to do their job, you would not be able to depend on ready access to clean and dry dishes. You might reach for a drinking glass, hoping that you could put it on the table. If it was wet, you would have to dry it with a dishtowel. That list of possible events highlights the reason that you should learn how to handle an appliance with a faulty drying cycle.
How to test the heating element
Remove the appliance’s source of power. Next find the terminals of the component that you want to test (the heating element). If you have trouble finding the heating element, look beneath the tub. At that point, you are ready to check the continuity in the element that ensures production of heat in a Kitchenaid dishwasher.
How to check the high limit thermostat
You will want your appliance to get hot enough to dry your dishes. Still, you do not want it to get too hot. Manufacturers appreciate that concern, and that explains the presence in all Kitchenaid dishwashers of a high limit thermostat. That thermostat is a safety device. Yet, if it fails to work properly, the thermostat could shut off heat production much too early. That would cut into the drying time, and could give the same results as a faulty heating element. If you want to check the thermostat, you will have to look for it at the bottom of the tub. It is behind the lower access panel. Once you have found it, check it for continuity, using a multi-meter.
Examine the condition of the rinse aid dispenser
You may not think that rinsing could have anything to do with drying. Once you become more familiar with Kitchenaid dishwashers, you will see that it does. You already know that no Kitchenaid dishwasher has been fitted with a dishtowel.
The amount of water on the dishes will determine the amount of heat that must be used in the drying process. The rinse aid increases the rate at which the dishes shed water. In other words, the rinse aid makes it easier for the heat produced within the Kitchenaid dishwasher to carry out its job. Look at the rinse aid chamber when the cycle is complete. Is it empty? It should be. Look at the cap on that same chamber. See if it has been adjusted properly. Be sure the cap fits snugly over the chamber that is designed to hold the rinse aid. If you cannot do it, call in the appliance repair service in San Diego County.