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Roper Dishwasher won't start

If your Roper dishwasher won't start, the most common causes are usually straightforward to check. A blown thermal fuse is the first place to look, since it cuts power to the dishwasher if the unit overheats. Next, check the door switch, which keeps the dishwasher from running unless the door is fully closed, then inspect the wire harness for frayed or broken wires that can stop power from reaching key components. A broken door latch can also keep a Roper dishwasher not starting because the latch and door switch work together, and if those parts are good, the main control board may not be sending voltage where it should. In some cases, a bad drain pump can also prevent startup if the dishwasher cannot drain before the fill cycle begins. If your dishwasher won't start, has power but will not start, or the start button seems to work but nothing happens, testing these parts in order is the fastest way to narrow it down. Enter your model number on RepairClinic.com to find the exact Roper thermal fuse, door switch, wire harness, door latch, main control board, or drain pump for your specific dishwasher.

01 - Roper 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 - Roper 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 - Roper 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 - Roper 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 - Roper 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 - Roper 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 Roper dishwasher start even though it has power?
How do I tell if the thermal fuse is keeping my Roper dishwasher from starting?
Can a bad door latch or door switch cause a Roper dishwasher not to start?
Can a drain pump keep a Roper dishwasher from starting a cycle?
How do I find the right Roper dishwasher part for my model?

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