What should I do if the dishwasher won't start?

Several factors could prevent starting: ensure the door is closed securely until the latch clicks, check that power is on (replace blown fuses or reset circuit breakers if needed), reset the dishwasher by holding the Start button for at least 3 seconds, verify that Delay start or Child lock aren't activated, select a wash cycle before closing the door, and confirm the water supply is turned on and connected.