Hello good night in advance I appreciate your attention. I have a mini split equipment brand mabe which install since again uses ga 410 to the case is that it only lasted a week and I stop cooling surely there is a leak then recharge a can of 410a which is the equivalent ah 650 g the same as it indicated to me in the data sheet that is added to the condensing unit but it still did not cool and the discharge tube was completely frozen, so I decided to turn off the equipment. The questions are why did the tube freeze? in the manometer I mark 50psi If the tube is new, the leak is probably in the conical nuts. Is there any type of sealant for these nuts? and finally I have read that the gas 410a is recharged in liquid face with the equipment off and after charging wait 15 to 30 min. to start up or what is the correct way to make the gas charge 410a I hope you can help me thank you all for your time and contributions.

Hello how are you, this is the correct way to load and manipulate the R410 greetings. https://yoreparo.com/refrigeracion/aire-acondicionado/manuales/5828501/procedimiento-de-carga-r-410a

Did you empty when you did the installation? if injected in liquid phase with the equipment on. try putting soap on the pipe joints, do not use Teflon on the nuts. and if it is refrigerant 410, the pressure is not 60 psi, it is 115 psi in the same low the first time it did not cool because it lacked refrigerant and in the second one because you passed gas.