Can you list the most frequent problems associated with furnace pressure switches?

I most often encountered the problem when the furnace pressure switch stuck closed. This issue can be particularly frustrating because it prevents the furnace from operating correctly, often leading to a lack of heat. Fortunately, I found a solution thanks to the article furnace pressure switch stuck closed https://alphamechanicals.com/blog/furnace-pressure-switch-troubleshooting-9-problems-and-its-fix/ . The article provided detailed troubleshooting steps and practical advice on how to fix the problem, which allowed me to get my furnace back up and running smoothly.