Have a system on an 84 deg. day
I'm there for a yearly service.
Has a TXV.
Sub cooling tells me that @ 163 deg. I should have 78 deg. liq. temp w/10 deg subcooling.
These were the temps.
85.1 - 91.0
82.7 - 89.7
81.5 - 92
Stopped adding ref.
This was over about a 15 min. period of time. Suc. and Liq. did not change. what's happening?