A currently running cycle keeps the dishwasher's latch locked, but an interruption releases the latch's lock. The "Cancel/Drain" button stops the current cycle and completely drains the dishwasher. Once drained, the latch is automatically disabled and the door unlocks.
The dishwasher’s control lock feature locks the control panel and prevents changes from being made while the dishwasher is active. An active control lock prevents the door from being opened, as the currently running cycle controls the latch.
A low dishwasher temperature results in a longer wash time, which keeps the latch locked until the cycle finishes. Your home's water heater should be set between 120 and 140 degrees Fahrenheit for maintaining normal wash times.
A power issue with the electric outlet can interrupt the dishwasher's cleaning cycle. It requires resetting your home circuit breaker and the dishwasher to unlock the door's latch. A force drain unlocks the latch once both the dishwasher and circuit breaker are reset, and the dishwasher is powered back on resuming or restart a cycle.