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RCA Dishwasher won't start

If your RCA dishwasher won't start, start with the parts most likely to cut power or keep the machine from recognizing that it is safe to run. The most common cause is a blown thermal fuse, which shuts the dishwasher down if it overheats. Next, check the door switch, since a failed switch can stop the dishwasher from starting even when the door looks closed. If the start button responds but the dishwasher not starting problem continues, inspect the wire harness for broken or burnt wires that can interrupt power from the control board to key components. A damaged door latch is another common cause, because the door must latch fully before the cycle can begin. After that, consider the main control board, but only after ruling out the more common failures, since control boards are often misdiagnosed. In some RCA models, a failed drain pump can also prevent startup if the unit cannot clear water before the fill cycle. To find the exact thermal fuse, door switch, wire harness, door latch, drain pump, or main control board for your dishwasher, enter your model number on RepairClinic.com.

01 - RCA Dishwasher Thermal Fuse

The thermal fuse shuts off power to the dishwasher if it overheats. If the thermal fuse blows, it will prevent the dishwasher from starting. To determine if the thermal fuse is defective, use a multimeter to test the fuse for continuity. If the thermal fuse does not have continuity, replace it.
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02 - RCA Dishwasher Door Switch

The door switch prevents the dishwasher from running while the door is open. If the door switch is defective, the switch will prevent the dishwasher from running even when the door is closed. To determine if the door switch is at fault, use a multimeter to test the switch for continuity. If the switch does not have continuity, replace it.
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03 - RCA Dishwasher Wire Harness

If the dishwasher start button appears to work, but the dishwasher still won't start, a wire harness which sends power from the control board to the pump components could be damaged. Inspect the wire harness for any frayed or broken wires and replace if necessary.
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04 - RCA Dishwasher Door Latch

The door latch ensures that the dishwasher door latches shut. If the door does not latch properly, the door switch might prevent the dishwasher from running. If the door latch is broken, replace it.
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05 - RCA Dishwasher Main Control Board

The main control board provides power to nearly every component of the dishwasher. If there is a problem with the main control board, it might not send voltage to the dishwasher, causing the dishwasher not to start. Control boards are often misdiagnosed—make sure you check more commonly defective parts before replacing the main control board.
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06 - RCA Dishwasher Drain Pump

A dishwasher drain pump assists in removing the water from the tank at various times during operation. Since the unit will drain some water from the tank prior to the fill cycle beginning, a faulty drain pump unable to drain any water could prevent the dishwasher from starting.
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Frequently Asked Questions

Why won't my RCA dishwasher start even though it has power?
How do I tell if the thermal fuse is bad on my RCA dishwasher?
Can a bad door latch or door switch keep my RCA dishwasher from starting?
Can a dishwasher drain pump not working stop the cycle from starting?
How do I find the right RCA dishwasher part for my model?

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