A door that's ajar prevents the dishwasher from completing a wash cycle, as the dishwasher automatically detects the open door and pauses the cleaning cycle. The dishwasher's sprayer stops within a minute after the door is opened and pauses the cycle until the door is shut and the "Start" button is pressed.
The indicator lights on the dishwasher's control panel blink repeatedly if the dishwasher experiences an error during the cleaning cycle, which typically requires power cycling the appliance to fix the problem. Professional service is required if the "Clean/Complete" light blinks once while the cycle status indicator light blinks.
The main water supply must be on for the dishwasher to operate. Otherwise, the dishwasher flashes the "Normal" or "Heavy" lights but will not fill with water. The water supply line may be kinked, which prevents water from properly flowing to the dishwasher when a cycle is selected. Low water temperature affects the dishwasher's cleaning time, as cycles run two to three times longer than usual to wash and sanitize the dishes.
A blown fuse or tripped circuit breaker in your home during the dishwasher's cleaning cycle can cause the cycle to become stuck during a load wash. Alternatively, the dishwasher's power cord may be loose in the electrical outlet and interrupt the cleaning cycle.