We recently had the same issue with an LG dishwasher. Luckily, my husband had stayed home from work or who knows what the outcome would have been. I had set the delay, as I have done many times before (usually at night, when we are home) and when it started it ran like normal. When my husband stepped out of the shower he smelled a foul smell. He got dressed started looking for the cause of the odor, and heard hissing and popping coming from the dishwasher. When he looked at it, there was smoke billowing out from the top of the dishwasher. He quickly turned off the breaker and went to investigate. When he opened up the dishwasher, smoke poured out. When I got home that evening the odor reminding me of a chemistry lab. It was very noxious and unnerving.
Upon calling customer service about the issue, we were told that it was not under warranty and they gave us the number to service center 60 miles away. Unsatisfied with this answer, my husband explained to the RUDE CS agent that this is not the first incident. That he had done some research and found out that LG dishwashers had been reported as catching on fire. This did not phase the CS agent, in fact he said
since the warranty was out he couldn't do anything and gave us the number to his manager/supervisor. We are gathering what information we have as well as other cases and going to see what can be done about this problem. Someone is going to lose more than a house one of these days, and LG will be to blame!