In an air conditioning system operating with R410A as its refrigerant, the coil may start to freeze when the pressure in the evaporator reaches approximately 101 psig.

Question

Quizplus · Accepted Answer

This is true because 101 psig is the saturation pressure of R410A at around 32°F, which is the temperature at which moisture in the air begins to freeze on the evaporator coil. When the coil becomes too cold, ice may start to form, impacting the performance of the air conditioning system.

In an Air Conditioning System Operating with R410A as Its