Hi Timothy,
No, there is no reset button for this microwave.
To help improve the heating microwave performance for heating, please see the link below and follow the steps and hyperlinks within.
Samsung microwave is not heating or has stopped working
https://www.samsung.com/us/support/troubleshooting/TSG01001963/
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
When you message us, please provide us with this reference number (1148712495) to help our team gather your information.
Have a great day.
^Charles