hello welcome to the site
I am master tech and will be able to assist you on this. the first step is to have this system's pressures checked this is a real common problem when the system is low and has moisture in it.
the systems when under a low pressures or high moisture content in the system will act different when the ambient temps are high.
their could be another issue but until the pressures are known this is the first step in knowing this.
Ok, I appreciate the information and that's what I'll do. Obviously, if the pressures are good I'll still be looking for an answer.
Thanks, XXXXX XXXXX that is the issue.
yes we will continue .
this would then get into some sensor testing and climate control testing.