I have a Samsung bottom freezer refrigerator. It has two sets of coils inside the unit, one in the freezer and one in refrigerator so there is no air flow between the two areas. I have replaced the front PCB panel which i believe controls both temperatures and all the sensors in the refrigerator but it has not stopped the refrigerator from freezing my food. The problem comes and goes. It primarily starts freezing food after it rains (I have noticed this on several occasions). What could it be? Should I start replacing sensors in the freezer? Should I look into replacing the board that controls the compressor (I believe that's what it controls).

SOURCE: Samsung RS2533SW freezer not cooling problem

mine did the same thing. It was the mother board.

and guess what? they don't sell that motherboard anymore.

I will never buy Samsung again!

SOURCE: My Samsung refrigerator will not cool

Call Samsung. I had the same problem when Best Buy delivered mine. The delivery people left the fridge in demo mode. The people at Samsung will talk you through it, it is very simple. The fridge should work fine then.

SOURCE: Samsung RS2534WW freezer not working properly

contact me and i can help you out on this particular unit. I have one and I bought the servicce Manual from Samsung for it.

SOURCE: samsung refrigerator freezer not freezing

-2 although below freezing temperature, is not really enough to keep food really frozen. I am presuming we are talking in Celcuis. You need to set the freezer to a lower setpoint.

SOURCE: fridge condensation - freezer thawing

OK now I'm wondering are theses numbers your getting 4 -9 the actual temps of the refrigerator and the freezer? and do they feel this cold and correct to you? I know the refrigerator side shouldn't be below 34 or so and definitely not below 32. If this is correct and the numbers are not settings but temps. (Now if you have a touch pad its electronic. If it has knobs it has a separate defrost and thermostat and are electro-mechanical)
If electronic Your control board and possibly defrost control are out.
It would more likely be the sensors going to the board(s) It will both sensors have the possibility of causing your problem. 1 will control the run of the compressor (and this one could and probably is connected to the inside coil) and 1 will control the air damper tween the refdg and freezer compartments, and may turn on the inside fan operation too.

(this would be my first suspect if these are degrees numbers). Look at the thermostat control see if it is attached to the indoor coil (usually the tube leavign the indoor section. If its not attached its not sensing the coil temp and when goes into defrost wala its not senmsing temps like its designed to do. Look for a broken clip or possible a plastic wire tie that holds this sensor in place.

Please get back to me with what you see - find on this look up.