If your RCA dishwasher soap dispenser is not opening, the most likely problem is a broken dispenser lever, which can keep the detergent dispenser from opening or closing the way it should. Next, check the detergent dispenser cover, since a cracked or damaged cover can stop the soap door from releasing during the cycle. After that, inspect the detergent container and dispenser lid for any visible damage or binding. If one of those parts is broken, replacing it usually fixes an RCA dishwasher not dispensing soap or an RCA dishwasher detergent door not opening. In some cases, it makes more sense to replace the entire detergent dispenser assembly instead of taking it apart to change one piece. The control board can also cause a dishwasher detergent dispenser not working if it fails to send voltage to the dispenser, but that is much less common and should be checked last. If your dishwasher is not dispensing soap and you want the exact replacement part that fits your machine, enter your model number on RepairClinic.com to find the correct RCA dispenser lever, dispenser lid, detergent dispenser cover, detergent container, control board, or complete detergent dispenser assembly.
01 - RCA Dishwasher Dispenser Lever
If the dishwasher dispenser lever is broken, it can cause the dispenser not to open or close properly. Inspect the dispenser lever for damage. If the lever is broken, replace it.
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The control board provides power to nearly every component of the dishwasher. If there is a problem with the control board, it might not send voltage to the detergent dispenser, preventing the dispenser from opening. However, this is not likely the case. Control boards are often misdiagnosed—make sure you check more commonly defective parts before replacing the control board