This is the 2nd training class in our introduction to servicing HVAC equipment. We introduce you to the world of HVAC motors which includes the newest version of the ECM motor. The meter of the class is the Combustion Analyzer. We will show you how to use it and care for it. You will learn what the analyzer measures and what measurements you need to know. You will also learn how to use it to determine failed heat exchangers on condensing furnaces. You will dig deeper into wiring diagrams, controls, and control wiring.