Possible failures and corrective measures for HVAC systems

Table 4-1 lists general problems that may arise during the testing of equipment and systems along with possible troubleshooting techniques. For all problems, consult equipment and component courses for troubleshooting directions. Check fuses/lights/breakers/etc. for continuity; check equipment calibration and settings; check for clogged filters and strainers; check for closed course shut-off valves and dampers; check for improperly adjusted valves, dampers and equipment and look for faulty equipment and connections.