✅ Microfiber Cloth I Use (Amazon paid link): https://amzn.to/45SK3CV

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Ninja Support: https://support.ninjakitchen.com

Ninja Double Oven (DCT451) stuck on “PRE” or preheating forever? This guide shows how to start preheat correctly, confirm the panel works, reset safely, check setup, wipe the control panel, and skip preheat on purpose plus when to contact support.