Hello - I'm new to this forum and think that I might be able to get help to determine the issue I've been experiencing.
I have a four year old 95.1% efficiency Westinghouse furnace (2-stage) model #FG6TE-100C-VB
(FDG061005877). I have experienced intermittent (about once a week) issues where there is a fault which gives a code of 2 flashes which means "Pressure Switch is open with inducer on". I have removed the rubber tubes which connect the inducer motor to the pressure switches (it actually goes to 2 of pressure switches of this furnace) and ensured that I could blow through these tubes (after disconnecting them from the actual pressure switch as I know you can damage the component). I have removed all of the tubes which are not even connected to the motor to ensure no blocked passages. I then lightly sucked on the tube connected to ensure that I hear the light "click" in the switch.
I have never been left "dead in the water" with the issue but I'm just trying to quit having to worry about if the furnace will start clicking and show this fault. I called a service tech and he came out and just did the exact same things I did, restarted the furance and recorded it as no issue. This has been happening since last heating season. Does anyone know what else I can check to identify what the true issue is? I know it could definately be the actual sensor but I know that I don't want to just start throwing parts at the issue. I thought that the service tech might have some diagnostic tool but he said there was no such thing ???
sorry it's lengthy but just wanted to provide enough info.