What would cause an intermittent buzzer noise from a Samsung RF217ACRS refrigerator? It otherwise works fine.

Sounds like a GPS locator issue! JUST KIDDING!

This site may help. There are just too many electronic anomalies that can cause this issue. I got lucky once by asking if they just had their dog RFID tagged and spayed or neutered. Turns out they did that week. The ID tag was on the same frequency as their dryer buzzer. They put a gum wrapper on the front of buzzer and problem solved.
https://www.repairclinic.com/RepairHelp/Freezer-Repair-Help

I’m happy to assist further over the phone at https://www.6ya.com/expert/david_dc2f9e0a44104720

Is the compressor running? If not - the timer could be stuck in defrost mode. If it is ruinning, then the freezer coil should be cold. If it is choked with frost & ice - then the defrost heater isn't getting powered (bad timer or defrost terminator - or is getting powered but has burned out.

You should allow the ice and frost to melt completely before turning back on again. Typically ice and frost don't build up so bad in a few days time to cause the temperature rise you're describing If getting cold - the compressor and refrigerant is likely OK, if not the defrost circuit is suspect. If compressor running but not getting cold - a refrigerant leak / charge level may be causing the problem.

Hello Friend, this is Z. Thank you for allowing me to assist you!

Did your refrigerator previously experience a power loss? If the temperature of food rises to an unsafe level, the buzzer will sound and the red light, if equipped, will also glow. First, deactivate the alarm to your refrigerator by unplugging it or flipping the household circuit breaker. It is good to wait roughly ten minutes and then turn on your refrigerator. After deactivating the alarm and your refrigerator has run approximately four hours, the red light/alarm should go off on its own. If the red light/alarm continues to stay on, your refrigerator may possibly have a communication problem with the control board, temperature control or a wiring harness. If this is the case, I would recommend connecting with an experienced technician to determine the underlying cause. Best regards!

Hello Dan, I am happy to assist you!

Did your refrigerator previously experience a power loss? If the temperature of food rises to an unsafe level, the buzzer will sound and the red light, if equipped, will also glow. First, deactivate the alarm to your appliance by unplugging it or flipping the household circuit breaker. Wait approximately ten minutes and then turn on your appliance. After deactivating the alarm and your refrigerator has run approximately four hours, the red light/alarm should go off on its own. If the red light/alarm continues to stay on, your freezer may possibly have a communication problem with the control board, temperature control or a wiring harness. If this is the case, I would recommend connecting with an experienced technician to determine the underlying cause.

Hi Joseph, I am happy to assist you. If the temperature of food rises to an unsafe level, the buzzer will sound and the red light, if equipped, will also glow. First, deactivate the alarm to the unit by unplugging it or flipping the household circuit breaker. Wait approximately ten minutes and then turn on the unit. After deactivating the alarm and the unit has run approximately four hours, the red light/alarm should go off on its own. If the red light/alarm continues to stay on, the freezer may possibly have a communication problem with the control board, temperature control or a wiring harness. If this is the case, I would recommend connecting with an experienced technician to determine the underlying cause.

You need someone to check the fans and where the noise is coming from before the repair cost you a lot of money because of damage it can cause. The fan may be hitting ice in the freezer or out of balance because it is worn out. No one can hear what you hear and someone will need to be there to check these things out, Sea Breeze

Sounds like a restriction to me.
Recover the charge.
Pressurize the system with 350 pounds of nitrogen pressure through the high side.
Leave it pressurized for 15 minutes.
Release the pressure through the low side.
Replace the filter drier again.
Pull a 2 hour vacuum on high and low side.
Recharge liquid refrigerant on the high side.
Let the system sit idle for 30 minutes before starting.
Check the evaporator fan motor as well as the coils. Use a good coil cleaner on the e-coil.

putting unfrozen food in a freezer can raise the temp to cause it to go off allow 24 hours for it to stop if it dont replace the buzzer

one time i ran into this problem and found out the lady was putting hot things in the freezer creating alot of moisture. check your door seal also make sure its sealing if it had gaps you can heat it up with a hairdryer to streach it out.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/dude_653d05454b389bba

The compressor is overheating and not starting. Could be just the start relay. If this happens again try unplugging it for about an hour then it should work for a while. Heat between doors is normal this is an electric heater designed to keep the doors from sweating. You just noticed it because the refrigerator wasn't cold.