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So, what did the guys say was the problem? Just asking since having furnace problem(stupid code says pressure switch stuck on close, but I went to local parts place and they tested the switch and it...

So furnace won't fire up. What the heck makes a pressure switch get stuck on close? Why doesn't blowing through the tube open it? Can hear a "click" so the diaphragm is doing something when I blow...

Oh thank you for replying, but I am a bit confused. I think you have the high efficiency unit so bit different setup than mine. Mine is a medium efficiency one, but many things the same from my...

I know your post is from a while ago, but maybe still around. When you said a clogged connector, which part do you mean? The pressure switch has a plastic "nipple" that the rubber hose connects to....

Help, someone. Yesterday turned the heat on and no heat. The diagnostic code says "pressure switch stuck on closed". So, I googled and did as instructed: removed the short "rubber hose" and blew...