- Diagnosis By Symptom - Manual Heating and Air Conditioning

TROUBLESHOOTING REFERENCE CHARTS
Across each row in the charts, the potential sources of a symptom are ranked in the order they should be inspected, starting with (1). Find the symptom in the left column, read across to the most likely source, then refer to the component or flowchart listed at the top of that column. If inspection shows the component is OK, try component (2), etc.