This article contains the Troubleshooting Guide for the DZ400 Series Ninja® Foodi® XL 2-Basket Air Fryer. This supports the following product SKUs: AD150, DZ300, DZ300C, DZ350, DZ401, DZ401C, DZ401QBK, DZ401QCM, DZ401QGY, DZ401QNV, DZ401QWH, DZ402QAQ, DZ402QBK, DZ402QCN, DZ402QGY, DZ402QNV, DZ402QRD and DZ402QWH.