Hi @viviane49832
It could be a faulty refrigerator temperature sensor or a faulty damper unit.
Here's the service data sheet for the model.
Enter the diagnostic mode and initially run tests #22 & #29 to check if the damper and the refrigerator¹ temperature sensor are both OK or not.
If you find the problem and it's a faulty part that needs replacing, here's the parts list that is useful.
Locate the wanted part in the list and note the part number listed for it. Search online for the part number only to find suppliers that suit you best.
Search on YouTube for (insert wanted part number) replacement and sometimes if you're lucky, there might be videos showing how to remove/replace the part.
¹ Note : FZ = freezer section, FF = refrigerator section
crwdns2934105:0crwdne2934105:0
crwdns2934113:0crwdne2934113:0
crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
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