Dear good night, I have a non-frost refrigerator that does not cool, the compressor starts and the high pressure pipe heats what is normal the evaporator does not cool, the fan does work ... that will be due to lack of gas ,, I hope your comments

Hello, you have to heat the condenser, in full, if it only heats the principle of the high pipe, and does not cool the evaporator, everything indicates that it has a lack of refrigerant or has a capillary obstruction. It is necessary to check with a pinch valve and a manometer at least., To see pressure in stopped and in march. regards

There is a leak in the system to look for a reliable technician