Hi Amadojose88, so he says, if you press the button or micro switch that makes the temperature changes in the panel where it has the 5 LEDs and does not allow you to make variations on them, because that only led has been fixed, everything would be indicating a Possible error code in your fridge, which depending on the LED that has been fixed on, we can know to which error it belongs and where to go to find the fault. The 5 LEDs are numbered from minimum to maximum such as (R0, R1, R2, R3 and R4) 1- (Yes, the LED (R2) that would actually be the third LED counting from minimum to maximum is fixed, if you stand in front of the refrigerator and counting from left to right, this would also be in the center of the 5 LEDs, this LED would indicate a fault in the temperature sensor of the conservation or cooling zone 2- (Yes the led number (R3) is fixed which would be the fourth LED from minimum to maximum, it would indicate a fault in the defrost sensor, located in the area of the freezer attached to the evaporator coil.This sensor if measured at a constant temperature of 25 degrees Celsius must report a value of Approximately 11 kilo ohm, if we also place the multimeter, on the 20 kilo ohm scale, to make its measurement more precise, this error could also indicate a fault in the rest of the control system on the electronic board, but first it must be measured the sensor, which is always the first failure in these cases most common of these equipment. Luck. S @ lu2 friovega63.