This HVAC Furnace Video is on How to Test a Pressure Switch Accurately and How the Pressure Switch Works! I use an SDMN6 to show you how to individually test a pressure switch by isolating it from the furnace. This will leave no doubt if the pressure switch is good or bad. I go over the purpose of a pressure switch in a gas furnace and the troubleshooting of the 24-volt electrical connections on the micro-switch located on the pressure switch. I go over where the pressure tubes are connected to the furnace and why some furnaces have two ports. I go over the difference in the + and - ports. I take a pressure switch apart so that you can see the internal parts in order to understand its operation. I give you reasons why the pressure switch could fail as well as why the pressure switch could trip, signaling a problem. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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