There could be several reasons why your Samsung fridge not cold. Here are a few potential causes and troubleshooting steps you can try:

1. Check the power supply: Ensure that the fridge is properly plugged in and receiving power. Check the circuit breaker or fuse box to make sure there isn’t a tripped breaker or blown fuse.

2. Temperature settings: Verify that the temperature settings on the fridge are set correctly. Usually, there is a dial or digital display that allows you to adjust the desired temperature. Make sure it is set to a cooler temperature.

3. Door seal: Inspect the door seal/gasket for any signs of wear or damage. A damaged seal can cause cool air to escape and prevent the fridge from cooling properly.

If your freezer is working and your fridge is not cold, in most cases could be that the damper control that lets cold air into the fridge is broken or your element is not working. The same goes for the fridge’s evaporator fan motor or evaporator coils, upon which frost can build up. A defective thermistor, which monitors the fridge’s temperature, might be the issue