Hi Matias, does the air have an electronic or analog control system? In both cases, start by checking if the temperature for very high values is graduated, check in case of electronic control, if it is correctly programmed in cold mode, sometimes without wanting to touch any key or button on the remote control and deprogram the operation of the equipment. For example, with the (MODE) key, you can change the functions, until you reach the (COOL) mode, set the temperature to the lowest level for example 16 degrees Celsius and with the (FAN SPEED) key increase the fan speed to the highest level high. If nothing results in any of the two types of control, whether electronic or similar I repeat, in that case it must go deeper and verify if it is cut, by sulphation or false contact, any of the cables that feed the compressor directly at its terminals or terminals already in the upper part of the compressor itself, in case of damage in that area you must clean the affected terminals and the terminals of the compressor very well and place new terminals on the tip of the cables, you must be careful not to confuse in that case the Common terminals, running and starting, so as not to damage the compressor itself with a bad installation. If the problem is not there, a possible damage to the thermostat itself or its operational control or function selector should be checked, in case of being analogous and if it is electronic or digital, a revision on the main electronic board would be pending, looking for of any failure in its electronic and electromechanical components such as the relay, for example, from which the compressor itself is powered. Luck. S @ lu2 friovega63.