The company recently shared this on the Instant Pot Community Facebook page. We have received a small number of reports of the Gem 65 8-in-1 Multicooker overheating, resulting in localized melting damage to the underside of the product. We believe the problem only affects batchcodes 1728, 1730, 1731, 1734, and 1746. To verify the 4-digit batchcode, locate the silver label on the underside of the product. The batchcode is the 4-digit number located at the bottom right of the label.