CORRECT DIAGNOSIS: By understanding the causes behind air-side and refrigerant problems, technicians will be better equippied to quickly diagnose issues in an air conditioning system. September 9, ...

Troubleshooting an air conditioning system often concerns refrigerant, airflow, and mechanical problems, either individually or in combination. The next series of articles will deal with many of these ...

Like any appliance, air conditioners need a little TLC to deliver optimal performance. ACs that haven’t been kept in top-notch condition tend to struggle most. We asked air conditioner pros and ...

A newly developed pneumatic-control system provides basic valve operation, as well as detailed monitoring of electrical solenoids, sensors, wiring, and connections. Called Drive Diagnostic Link (DDL), ...

Choosing and maintain pneumatic components wisely will help avoid the expense of unplanned downtime and costly rebuilds. As modern pneumatic components and systems get ever more complex, it becomes ...

The advent of electromechanical controls in the 1970s, analog controls in the 1980s, direct digital control (DDC) in the 1990s, and complete building control integration in the 2000s has progressively ...