The temp reads 65f. when I change it to 0-33 it goes back to 65f

That would be a warranty issue, but wonder if you are reading set temperature, ambient temperature or 'set back' temperature? Contact the maker.

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Check to see if the condenser fan is working. Samsung has a notoriously bad condenser fan motor. This is the compartment in back. Check that forst before replacing the control board.

check your coolant. the temp is the water temp. Your radiator is out of water? you`ll burn out your water pump. Also check to see if your radiator fans are running constantly.

It sounds like the fan control AFC not cutting in on temp rise . But working in summer mode .

is unit iced up, do you hear inside fan running

when it's on 'auto', the fan adjusts according to the temp in the car and the temp setting you have it set at. try setting the auto temp control down to 65, then hit the "-" one more time to send it to "LO" - the fan should automatically jump up to max.

HI. The door switch will be the culprit here.

The interior light in most refrigerators, and the fan in some, are controlled by a door switch. When the door is closed, the switch is depressed and the interior light goes off and the fan resumes normal operation. If the door is misaligned or the switch malfunctions, the refrigerator may become warm as a result of the non-operation of the evaporator fan and the heat generated by the interior light. Test the switch for continuity using a multimeter. Set the multimeter to the ohms setting X1. Place a probe on each terminal. The multimeter should change from a reading of infinity to zero when the probes touch the terminals. With the probes still touching the terminals depress the switch, the reading should change back to infinity. If it does not pass both of these tests, the switch should be replaced.

when you had the thermastat replaced the might have put a higher temp one in and that will make it seem like it's running hot you might have to put a lower temp one in

Switch ig. on, ground the sender unit wire for about 3 seconds see if the temp. gauge moves, if so change sender unit, if not then it is a faulty gauge reader.

Check the auxiliary cooling fan for operation. As the engine temp rises, it should kick on to bring the temp down. U may have a bad motor on the fan, or more likely a bad fan switch.