Check the child lock function to make sure that function is not enabled as shown in the first image below. You did not indicate the error code that you are seeing on the dishwasher. The second and third images show the error codes for this type of dishwasher. If you see one of these error codes, you may be able to perform some of the troubleshooting shown in those images. Be sure that you
shut off the circuit breaker
for the dishwasher to completely disconnect electrical power before accessing internal components. If you need more help, reply with additional details (error code being displayed) and we will try to assist you further.