What is one of the indicators that the temperature and pressure readings in a system might be incorrect?

Excessive ice formation on heat exchangers is a significant indicator that the temperature and pressure readings in a system might be incorrect. When ice forms, it typically indicates that there is insufficient airflow or that the refrigerant is not cycling properly through the system. This abnormal ice build-up can result from low refrigerant levels or a malfunctioning component, leading to inaccurate readings.

In a properly operating refrigeration system, heat exchangers should not accumulate ice but should efficiently transfer heat without obstructing airflow. Ice formation can hinder the efficiency of the heat exchange process, resulting in increased energy consumption and operational issues. Therefore, noticing excessive ice on heat exchangers is a practical sign for technicians to investigate the system further, verify the temperature and pressure readings, and ensure that the refrigerant cycle is functioning as intended. Such attention to detail is crucial in maintaining the effectiveness and longevity of refrigeration and air conditioning systems.