Question

An air conditioning system with a variable displacement compressor has poor performance in high demand situations. All of these could be the cause EXCEPT:

A. A low refrigerant charge.
B. A faulty control valve.
C. A faulty low pressure switch.
D. A weak compressor.

Answer 1

A low refrigerant charge is NOT the cause of poor performance in an air conditioning system with a variable displacement compressor in high demand situations.

Step-by-step explanation:

The poor performance of an air conditioning system with a variable displacement compressor in high demand situations can be caused by various factors. However, one of these factors would NOT be a low refrigerant charge. A low refrigerant charge can result in reduced cooling capacity and inefficient operation, especially in high demand situations.

On the other hand, a faulty control valve, a faulty low pressure switch, or a weak compressor can all contribute to the poor performance of the system in high demand situations. These components play important roles in regulating the flow and pressure of the refrigerant, and any malfunction in them can hinder the system's ability to maintain the desired cooling effect.

Therefore, the answer is A. A low refrigerant charge.