If your Dacor dishwasher spray arms are not spinning, the wash system usually is not moving water where it needs to go. On this symptom, the most likely causes listed are electrical control issues first, including a bad control board or main control board, followed by a timer problem. After that, check for restricted or damaged wash arm support parts, especially the center wash arm support, lower wash arm support, and upper wash arm support. When a support is clogged, cracked, or not lining up with the water supply nozzle, the dishwasher spray arm not turning can leave you with a dishwasher not cleaning dishes, dishes still dirty after dishwasher cycle, or a dishwasher not washing properly on one rack. Inspect each wash arm support for obstructions, damage, and proper fit, and make sure water can flow freely to the wash arm or spray arm. If you need a replacement part for your specific Dacor dishwasher, enter your model number on RepairClinic.com to find the exact control board, main control board, timer, center wash arm support, lower wash arm support, or upper wash arm support that fits your machine.
01 - Dacor Dishwasher Control Board
A dishwasher's control board provides power to nearly every electrical component in the dishwasher. A faulty board may be unable to supply power to the water inlet valve, preventing it from opening and allowing the necessary water to fill the tank.
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A dishwasher's main control board provides power to nearly every electrical component in the dishwasher. A faulty board may be unable to supply power to the water inlet valve, preventing it from opening and allowing the necessary water to fill the tank.
The timer allows power to flow to the proper parts at the proper times. If the timer isn’t working properly, it might not send voltage to the dishwasher, causing it not to start. Timers are often misdiagnosed—make sure you check more commonly defective parts before replacing the timer.
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.
The lower wash arm is attached to a support fastened to the sump assembly. Water flows through the support to the arm which circulates the water to the dishes in the lower dishrack. If the support is damaged or obstructed water may not flow properly. Inspect the support for any damage or obstruction and replace if necessary.
The upper wash arm is attached to a support that provides water to the arm to spray the dishes in the upper dishrack. If the support is damaged or obstructed water may not flow properly. Inspect the support for any damage or obstruction and replace if necessary.