Hey all,

I've been working on a system that tripped on hp on a warm day. The head pressure looked high for the conditions but liquid line was cool and sight glass full.
fitted gauges and found hp to be 52c /r404a. The liquid line measured 30c. Ambient 28c. Therefore perceived sub cooling 22c.
I thought the system might be overcharged and started reclaiming, but soon noticed flash gas in sight glass. The liquid line had only dropped 1c to 29c. Considering the hp was still at 50c would this confirm non condensables?
If I have brought the sight glass to the point of flashing I would assume the refrigerant to be saturated. If the refrigerant is saturated I should be abled to obtain the relevant pressure . If the pressure reads to be higher, then there are non condensables.?

The refrigerant can still condense and the system might still seem ok , but the hp will be higher than expected and a standing pressure temp test should be done, but does the test that I did confirm non condensables in system.?

thanks