Did you go through a phase where the AC would work for 5 or 10 minutes and then stopped working ? When the AC gets low on refrigerant it will usually get too good at getting cold and the evaporator will freeze into a solid block of ice. When there's a slow leak this is typical symptom that happens. There is a chart that says what the low side should be depending on ambient temperature I have a feeling that you just did not add quite enough freon. The high low numbers ratio looks healthy. We used to have to drive to Illinois to get R134a but now we can get it in Wisconsin.

Is the difference of how high versus how low that determines how cold the evaporator gets. When there is not quite enough refrigerant it's easier for the compressor to make a larger difference and it will freeze up the evaporator AC irony


Sent from my iPhone using Tapatalk Pro

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)