I started a 24 hour cook on some lamb shanks yesterday. Between 3pm and 3am there was nominal water loss, maybe 1/2" out of a 5 litre crockpot, so hardly any. At 6:30 am I got up and the Joule was running in a 1/2" puddle of water in the bottom of the crock, flashing red and whistling madly. I had to unplug it to turn it off. There were no cracks in the crock. The counter was bone dry. I have no idea what happened!
I contacted Customer Support, had a swift email exchange, which included sending them the digital receipt from Sur la Table, and a new Joule is on the way to me. Big kudos to customer service!