Published at Tuesday, March 26th, 2019 - 21:26:39 PM. wiring. By Valere Mahe.
Bob checked on each side of each heater and found three of the five heaters were drawing current; therefore they were heating. He said, “I can see why the system was not heating the building. It is very cold outside and will probably require all of the heaters to keep the building warm. Now, I need to find out why two of the elements are not working, and there are so many wires that I don’t really know where to start.” Bob looked at the diagram and said, “I can see that the thermostat starts the timed fan control and sequencer #1. Now what happens?”
Wiring diagrams can aid a technician in many ways. They allow a technician to systematically troubleshoot a problem. By analyzing the system’s wiring diagram, a technician can see where the common junction is located that could affect the components that aren’t working. The technician can then start at that point without having to check the entire system. For example, a technician arrives on the job and finds that the compressor is the only component of the system that is not running. By studying the wiring diagram, it can be quickly determined from where power is applied to the compressor and which components are wired in series with it. When possible, it is a good practice for a technician to keep on hand wiring diagrams of the equipment most frequently serviced
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