Troubleshooting microprocessors.(REFRIGERATION ZONE: the professor)

Air Conditioning, Heating & Refrigeration News | March 6, 2006| | Copyright

Service technicians in the HVACR field will sooner or later encounter the microprocessor in their daily service work. Equipment manufacturers are using microprocessors more and more to make their products more reliable, less complicated, easier to troubleshoot, and more self-diagnostic, as well as to cut down on the amount of hard wiring that goes into the control circuit.

In this article, we will discuss a micro processor (Figure 1) as part of the control circuit (Figure 2) of a medium-size commercial ice machine. Notice that the microprocessor has taken the place ...

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