Fan and System Troubleshooting—A Guide to Characteristic Field Problems

Troubleshooting is the effort to identify and resolve differences between design intent and actual performance. This article is a guide for identifying the most common problems encountered in fans and air handling systems. This is often an “art” and not a “science” because many problems are subtle and hard to diagnose. It often takes a lot of knowledge, inquisitiveness, common sense, mechanical aptitude, and years of experience to diagnose the cause of some very subtle problems. A professional consultant or troubleshooter may ultimately be required to identify and solve the worst problems. This article intends to point people in the right direction for solutions. 

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