✅ Oven-Safe Thermometer (Amazon paid link): br Disclosure: Some links above are affiliate links — which means I may earn a small commission if you click and buy, at no extra cost to you.br br Breville Support (BOV900 Product Hub): br Breville Smart Oven Air Fryer Pro turns on but won’t heat on your BOV900BSSUSC? This guide shows how to pick a true heating mode, understand PREHEATING and the early load-prompt beep, close and latch the door past the auto-eject notches, verify power on a dedicated circuit, run the light test during a cycle, and restore airflowclear vents plus when a sensor or control fault needs Breville service.