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, OP305CCO, OP350, OP350CO, OP350CCO and OP401.