If your dishwasher is not filling with water, it can usually be a water flow issue or an issue with one of the components that control water flow. The most typical causes include the water supply valve being closed, a faulty inlet valve, or a float switch that is stuck in the closed position, meaning water is not allowed to enter. In some instances, the problem is control board-related, so the electrical control system does not permit water to enter during the wash cycle.
You may notice that your dishwasher starts and operates normally, but the tub stays dry, and dishes come out dirty. This may mean that the water does not reach the dishwasher at the right time. You can resolve some issues with simple checks, but in most cases, ongoing issues often need expert attention. If a problem continues, it is best to contact a qualified dishwasher repair service to ensure the dishwasher functions properly and is not damaged further.