A:Answer Hi Charlieclk430,
Thank you for reaching out and we hope you are in good health. I see your point of needing a user manual to have a guide when something happens to your refrigerator.
After about 6 months (and typically, about 300 gallons (1200L) of water), the filter indicator blinks red for several seconds when you open the door, reminding you that the filter needs to be replaced.
The compatible water filter for your Samsung refrigerator with model number RF24R7201SR/AA is HAF-QIN Refrigerator Water Filter.
I have included a link below to assist you with purchasing and knowing how to replace the water filter.
Found below is the user manual link. Please click on the link and turn to pages 44, 70 and 71 for issues regarding water filter.
https://downloadcenter.samsung.com/content/UM/202106/20210623134419044/FDR_AW4-CD_FL_DA68-03832A-05_EN_MES_CFR.pdf
Please feel free to communicate with us through the channels below if you have additional questions.
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: 1144289064
Leo