An R-134a expansion valve system that is properly charged has the following gauge readings,high-side 150 psig and low-side 42 psig and the ambient air temperature is 85°F.Which of the following is the most likely cause?

Question

Quizplus · Accepted Answer

The low-side pressure is lower than it should be, indicating a potential issue with the expansion valve. If it is stuck open, it can cause the low-side pressure to drop too low. Other potential issues would cause both high and low-side pressures to be affected.

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