Posted 8/2/2024 07:57 (#10836330 - in reply to #10835662) Subject: RE: Charging AC system with R290
SW Ontario
R290 seems to run colder in the evaporator. So the evaporator needs to be really clean and the blower needs to be moving lots of air. If your system has a TX valve that is not working properly that can also cause evap freeze ups.