Hello CPurser,
Thank you for reaching out. We appreciate you taking the time to raise your concern about your electric range. I understand you want to know if you need to heat up your oven while using your air fryer. We are here to help you.
As per checking, preheating is not necessary.
To help you with your concern, I am providing this link https://downloadcenter.samsung.com/content/UM/202112/20211214153429901/NE63A6751_AA-00_EN-MES-CFR_210901.pdf for your user manual to guide you.
Should you need more assistance, please feel free to get back to us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Your reference number is 1144169634.
- Noraina