Is the water supply valve turned off?
Verify that water flows at the sink, if not, check water supply to the sink and home. The hot water supply valve must be turned on for the dishwasher to fill. The hot water supply to the dishwasher should have a manual shutoff valve located under the sink.
Is Delay Start being used? Is the cycle paused?
Select the Delay start option to run your dishwasher at a later time or during off-peak hours. You can add items to the load anytime during the delay countdown. After adding items, close the door firmly until it latches. The delay countdown will not continue if the door is not latched. Press Start/Resume. If the door is unlatched, the Start/Resume indicator flashes. The delay countdown stops until you latch the door and press Start/Resume. As part of normal operation, the dishwasher pauses two to three times during the cycle for thermal holds and advances once the temperature is met. Refer to your Owner's Manual.
Is the door open or unlatched? Is the START/RESUME indicator flashing?
If the door is opened during a cycle or the power is interrupted, the Start/Resume indicator flashes. Resume the cycle by pressing START/RESUME and closing the door within 3 seconds.