Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpRCA Dishwasher RepairRCA Dishwasher not cleaning Repair
RCA Dishwasher not cleaning
If your RCA dishwasher is not cleaning dishes, start with the most common cause: a restricted or failing water inlet valve. When the water inlet valve cannot let in enough water, the dishwasher is not washing properly and dishes still dirty after dishwasher cycle are the usual result. Next, check for improper loading, since crowded racks can block spray from reaching every item. Water temperature matters too, and your dishwasher needs about 120°F water to clean well. After that, inspect the center wash arm support, center wash arm assembly, and lower wash arm assembly. If the support is damaged or the wash arm holes are clogged, your dishwasher may be leaving dishes dirty because water is not reaching the upper or lower rack correctly. Cleaning debris from the wash arm can help, but badly worn parts should be replaced. For the right fix, enter your model number on RepairClinic.com to find the exact RCA dishwasher replacement part that fits your machine, whether you need a water inlet valve, center wash arm support, center wash arm assembly, or lower wash arm assembly.
01 - RCA Dishwasher Water Inlet Valve
The water inlet valve opens to allow water to enter the dishwasher. If the valve is clogged or defective, the dishwasher won’t get enough water to clean dishes properly. If the water inlet valve is clogged, replace it. Do not attempt to clean the water inlet valve—cleaning the valve could make it more likely to fail.
Enter model number to search for the required part specific to your product
Top Solution
02 - Improper loading
Improper loading will keep the water from cleaning the dishes. Make sure you are leaving enough space between the dishes.
Top Solution
03 - Improper water supply temperature
The water may not be hot enough. The recommended water supply temperature for a dishwasher to clean properly is 120 degrees Fahrenheit (49 degrees Celsius). If your hot water temperature is lower for safety reasons, try using a longer cycle that heats the water.
Top Solution
04 - RCA Dishwasher Center Wash Arm Support
The center wash arm is attached to a support that is normally attached to the underside of the upper dishrack. Water flows through the support to the arm which circulates the water to the dishes in the upper rack. If the support is damaged or obstructed water may not flow properly. Inspect the support for any damage or obstruction and replace if necessary. In addition, make sure that the support is mating properly with the water supply nozzle.
Top Solution
05 - RCA Dishwasher Center Wash Arm Assembly
The center wash arm circulates water to the dishes in the upper rack. If water can’t flow properly through the center wash arm, the dishes in the upper rack won’t be cleaned properly. Over time, food particles can get trapped in the tiny holes in the wash arm. If your dishes are coming out dirty, the wash arm might be clogged. To unclog the center wash arm, remove the wash arm and dislodge any debris from the holes. If the wash arm is extremely clogged, replace it. In addition, make sure that the center wash arm assembly is mating properly with the water supply nozzle.
Top Solution
06 - RCA Dishwasher Lower Wash Arm Assembly
The lower wash arm circulates water to the dishes in the lower rack. If water can’t flow properly through the lower wash arm, the dishes in the lower rack won’t be cleaned properly. Over time, food particles can get trapped in the tiny holes in the wash arm. If your dishes are coming out dirty, the wash arm might be clogged. To unclog the lower wash arm, remove the wash arm and dislodge any debris from the holes. If the wash arm is extremely clogged, replace it.
Top Solution
Frequently Asked Questions
Why is my RCA dishwasher not cleaning dishes on the top rack?
Why is my RCA dishwasher leaving dishes dirty after the cycle?
How do I know if the water inlet valve is causing my RCA dishwasher to not wash properly?
Can water temperature make an RCA dishwasher not cleaning problem worse?
How do I find the right replacement part for my RCA dishwasher not cleaning problem?
Shop by RCA Dishwasher Parts
Shop by Popular RCA Dishwasher Models
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com