This article contains the Troubleshooting Guide for the OP300 / OP400 Series Ninja® Foodi® Tendercrisp™ Pressure Cooker. This supports the following product SKUs OP300, OP300C, OP301, OP301C, OP302, OP302BRN, OP302C, OP302H, OP302HAQ, OP302HB, OP302HCN, OP302HW, OP305, OP305CO, HB302HCN, OP300WIHUT, OP302WBKT, OP305CCO, OP350, OP350CO, OP350CCO, and OP401.