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Jenn Air Dishwasher won't start

If your Jenn Air dishwasher won't start, start with the parts most likely to cut power or stop the cycle before it begins. 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 make the dishwasher think the door is still open. A damaged wire harness is another common reason a Jenn Air dishwasher has power but will not start, especially if the start button seems to respond but nothing happens. After that, inspect the door latch because a dishwasher door that is not latching properly can keep the machine from running, then consider the main control board only after the simpler parts have been ruled out. On some models, a failed drain pump can also prevent a dishwasher not starting condition because the unit may need to drain before it can move into the fill cycle. If your Jenn Air dishwasher won't start or the start button is not working, enter your model number on RepairClinic.com to find the exact thermal fuse, door switch, wire harness, door latch, main control board, or drain pump for your specific dishwasher.

01 - Jenn Air 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 - Jenn Air 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 - Jenn Air 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 - Jenn Air 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 - Jenn Air 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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Highly Likely

06 - Jenn Air 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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Highly Likely

Frequently Asked Questions

Why won't my Jenn Air dishwasher start even though it has power?
How do I tell if the door latch or door switch is keeping my Jenn Air dishwasher from starting?
Can a bad drain pump cause a Jenn Air dishwasher not to start?
Should I replace the main control board if my Jenn Air dishwasher is not starting?
How do I find the right thermal fuse, door switch, or latch for my Jenn Air dishwasher?

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