Hello there,
Thank you for reaching out regarding your fridge light and its settings. Allow us to help.
Here is a guide to help you troubleshoot if your fridge light is not working.
Samsung refrigerator lights do not turn on
https://www.samsung.com/us/support/troubleshooting/TSG01109322/
Please refer to this link to your user manual for more details on the recommended temperature settings. Turn to pages 42 to 43, "01. Fridge and 02. Freezer."
Manual
https://downloadcenter.samsung.com/content/UM/202405/20240531053524129/FDR_RF6500C_3Door_MANUAL_WEB_DA68-04752Q-00_EN-MES-CFR_240529.pdf
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 (1149330241) to help our team pull up your information.
Have a great day.
^Camille