Hello, good morning, that the inner unit may freeze may be a lack of refrigerant, just as there is a measure of working pressure.
If the installation was recent, the technician must respond.
Good day triatlon99, thanks for your time, here is a very small town and we all know each other, and the supposed technician turned out to be a rogue, I called him we talked and he told me that what he did was change it and try to get it going but that does not save because the air does that, in short a bandit, but there is no one to call, so I am trying to orient myself a little so that they do not lie to me anymore, and I am looking forward to reaching out my hand, buying some manometer and that and get a hand.
The first thing is to measure pressures, in case of leakage correct, then pressurize again vacuum and refrigerant charge.
Ok ok, thank you very much for the guide, I'm going to instruct you a little on some channel and fill me with courage, thanks.