I have an LG Model LDF6920ST dishwasher and the rinse button is not working. Usually you push it for Sanitary setting and push again for Extra Rinse cycle and the associated setting lights up. When I push the Rinse button now, regardless of how many times, I get nothing - no lights for any of the settings. I can’t tell if the button itself is broken or if the Sanitary and/or Extra Rinse cycles are working/occurring. I do have LG approved liquid rinse aid in the rinse aid dispenser.