We were getting all ready for our trip to Cincinnati, and after dinner, we ran our dishwasher. After a few hours, we started smelling an unfamiliar odor, and we realized that it was coming from the dishwasher, where, when we opened it, we realized that the heating element was stuck on high heat, melting plastics that were in the dishwasher. We had to turn it off at the circuit breaker, let it cool, then take the melted plastic out. There was plastic even sitting on the heating element!
Normally, with an early flight the next morning, we would have run it in the morning and just left. We felt lucky to have swapped our normal schedule so we avoided what would have otherwise likely been a disaster.