An R-134a expansion valve system that is properly charged has the following gauge readings,high-side 320 psig and low-side 50 psig and the ambient air temperature is 80°F.Which of the following is the most likely cause? Technician A says an air flow restriction through the condenser coud be the cause.Technician B says the refrigerant system coud be overcharged.Who is correct?

Question

Quizplus · Accepted Answer

Both an airflow restriction through the condenser and an overcharged refrigerant system can cause high high-side pressure and relatively normal low-side pressure in an R-134a system.

An R-134a Expansion Valve System That Is Properly Charged Has