Derek ColeGM, Simmons One Hour Heating & Air · AI HVAC Answers

Troubleshooting Pressure Switches: What You Need to Know

6 Feb 2025 · 1 min

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0:33

A technician (speaker) demonstrates diagnosing HVAC package unit pressure switches, describing checking whether pressure switches between the unit and the contactor are open or closed. The speaker notes a pressure switch that should be closed is open and suggests this is a common failure mode for these package units.

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