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Maytag Dishwasher Won't Start

MDB7749AWM1

The part(s) or condition(s) listed below for the symptom Dishwasher won't start are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Dishwasher won't start

Cause 1Thermal 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.

Part Testing
Parts
Thermal Fuse for your MaytagDishwasher
Thermal Fuse - Part # 1549751 Mfg Part # W10258275

Dishwasher thermal fuse (or bi-metal fuse) assembly. The thermal fuse opens to cut off power to the dishwasher if the dishwasher overheats. If the thermal fuse fails, the dishwasher will not start. If the thermal fuse has failed, first investigate what caused the dishwasher to overheat.

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Cause 2Door 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.

Part Testing
Parts
Door Switch for your MaytagDishwasher
Door Switch - Part # 830947 Mfg Part # WP8269209
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Cause 3Door 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.

Parts
Door Latch for your MaytagDishwasher
Door Latch - Part # 2118546 Mfg Part # WPW10404412

Dishwasher door latch and switch assembly

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Cause 4Main 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.

Parts
Main Control Board for your MaytagDishwasher
Main Control Board - Part # 1875709 Mfg Part # WPW10298356

Dishwasher main control board. The control board regulates the various functions of the dishwasher. NOTE: This part is often misdiagnosed. Check more commonly defective parts before replacing the main control board.

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Cause 5Touchpad and Control Panel

To determine if the touchpad is at fault, try pressing various buttons on the touchpad. If some of the buttons don’t respond, the touchpad might be defective. (Some manufacturers sell the touchpad separately from the control panel. Other manufacturers require that you purchase the touchpad and control panel together. If you cannot replace the touchpad individually, replace the touchpad and control panel.)

Parts
Touchpad and Control Panel for your MaytagDishwasher
Touchpad and Control Panel - Part # 4258942 Mfg Part # W10811151

Universal Silver touchpad and Control Panel

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Cause 6Touchpad and Control Panel

To determine if the touchpad is at fault, try pressing various buttons on the touchpad. If some of the buttons don’t respond, the touchpad might be defective. (Some manufacturers sell the touchpad separately from the control panel. Other manufacturers require that you purchase the touchpad and control panel together. If you cannot replace the touchpad individually, replace the touchpad and control panel.)

Parts
Touchpad and Control Panel for your MaytagDishwasher
Touchpad and Control Panel - Part # 4283193 Mfg Part # W10811148

Black Touchpad and Control Panel

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Cause 7Touchpad and Control Panel

To determine if the touchpad is at fault, try pressing various buttons on the touchpad. If some of the buttons don’t respond, the touchpad might be defective. (Some manufacturers sell the touchpad separately from the control panel. Other manufacturers require that you purchase the touchpad and control panel together. If you cannot replace the touchpad individually, replace the touchpad and control panel.)

Parts
Touchpad and Control Panel for your MaytagDishwasher
Touchpad and Control Panel - Part # 4283194 Mfg Part # W10811149

White touchpad and Control Panel

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