Samsung fridge RS2545SH every 7 days freezes fridge coil.

Your fridge is no longer working and you need to buy a new fridge.

well yes and no , defrosting it will temporally make it work , but main problem is there isn't proper air flow over evaporator coils id clean them with soap and water while defrosting out unit , if low airflow is allowed to continue then refrigerant gas will build to high press and escape and render unit a total replacement

I have the same problem....anyone have a fix

try defrosting, it might be touching ice build up. you can check by pressing the knob switch in front after defrosting one day

Hi I have the same problem,
did you get an answer to your question..?

no thermostat in this model but there are thermister it is also on the evaporator (yellow wire)

Diagnostic mode will say what any electronic issues are. Check to see if there is, if any, frost build up on the rear panel or ports. If the unit had made any noise in the refrigerator. This unit may have a switching valve for the twin cool, so it could be an issue there.

I've had my Samsung RS267 LASH side by side for almost 2 years now and the coils froze recently. The temperatures displayed - relating to the refirgerator side - bounce around when the coils freeze. My freezer thank goodness is still working properly. The repairman indicated that the heating element for the refrigerator coils was bad. Unfortunately he had to order the whole unit (coils, heating element, etc.) since he couldn't replace just the one part. Samsung takes their time sending the parts - we've been waiting for 10 days now. The Samsung warranty covers the compressor, evaporator, condensor, drier and connecting tube for 5 years parts and labor so we should becovered. You might be covered as well - depending on when you purchased your refrigerator. I did purchase a separate extended warranty from Lowes when I bought the refrigerator and I'm glad I did. My extended warranty included $250 in food spoilage covering our food loss due to the breakdown. Hope this helps......

Control board has gone bad....

What happens is the defrost is controlled electronically from a circuit board, when this goes bad, the freezer quits defrosting, and freezes the fans that circulate air through the fridge side of things.

To check this, unplug the entire fridge, leave the freezer open, wait for it to defrost a bit, if this causes the fridge to start cooling again when you plug it back in, then its the defrost. You should also see ice crystals on the back of the freezer just under the icemaker.

http://forums.partselect.com/refrigerator-freezer-repair/rerifgerator-side-not-below-54-degrees-6699.html

Sounds like a thermostat problem. There will be a thermostat sensor inside the fridge usually inside the interior light housing.