Which of the following symptoms may indicate a problem with the compressor in an HVAC system?

Increased head pressure is a strong indicator of a potential problem with the compressor in an HVAC system. When the compressor is functioning properly, it effectively compresses the refrigerant, leading to a specific head pressure that helps maintain the necessary flow and cooling capacity. If head pressure rises above normal levels, it can suggest that the compressor is struggling to discharge the refrigerant, possibly due to a malfunction or blockage in the system.

This symptom can be indicative of several underlying issues, such as inadequate airflow, a failing compressor, or problems with the refrigerant charge. High head pressure can result in overheating of the compressor, leading to further damage and reduced efficiency of the entire HVAC system. Therefore, monitoring head pressure is crucial for diagnosing and addressing compressor-related issues effectively.