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, OP302C, OP302H, OP302HAQ, OP302HB, OP302HCN, OP302HW, OP305, OP305CO, OP305CCO, OP350, OP350CO, OP350CCO, OP400, OP400C, OP400W, OP401, OP401BRN, OP401C, OP402C, OP402H, OP402HB, OP402HCN, OP402HN, OP402HW, OP402Q, OP402QAQ, OP402QB, OP402QCN, OP402QN, OP402QW, OP405, OP405A and OP405CO.