Hi Claudio, from what I see, it cools very well, it's just not melting, that's why it crashes as well if it doesn't cut, it can have sensor problems as well as not being sensors and it's the board. Well check everything separately fan resistance bimetal thermal resistance fuses and sensors. Check the false contacts that may have any plug of the plate and the resistance and the whole refrigerator in general, pay attention to the thermal fuses that have continuity and to the resistance anything connects it directly to 220volt for a few seconds and check if it heats. Test continuity to the temperature sensor cables if they are not cut and all the wiring in general. Now let's go to the bimetals, look at the bimetal that you say at 20 ° C, it should say L72 ° -44 ° F (farenheit) means that it closes at 7 ° C it opens at 21 ° C and your refrigerator should be Patrick Mabe and take that measurement in bimetals. Take two for more protection, one to the other positive to the negative or neutral of the resistance you can put only one but use that of 20 ° C not the 14 ° is not lacking defrosting time to be cutting before the 14 ° C. ----__ SENSORS__: I have three tables for 2.7k 5k and 10k so I see yours is 10k since at 26 ° C it has 9.6k according to my table, therefore if it has another sensor below it would have to measure the same but to be sure that the sensors are at 25 ° C, the sensors give you their value to go and buy them, regardless of the redundancy at 25 ° C they will give you their capacity in Kohm. So if you buy it would have to be 10K, you would have to check how many sensors it has. Also check if the defrost drain is not blocked by dirt and that it is slightly tilted back. Check because I do not know if it brings ventilation duct resistance as well as if it brings the temperature damper at the bottom or is only handled with the sensors. Finally, if everything remains the same, you would be facing a plaque problem but start changing the most economical (sensors) I hope to be of help greetings luck .... you would have to measure the sensors well in a glass with ice water full of cubes with a digital thermometer the value they give you at a certain water temperature to be sure because here I have a 5K sensor model that at 26 ° C gives me 4,829Kohm I mean that it is within your measurement too if I did not understand wrong !! !!!