Hello, I have a York (forced air) gas furnace that's 9 years old. Every winter it seems like I have to replace the pressure switch ( round switch with 2 connections & air hose). I hear the blower come on, burners ignite and then within a few seconds they go off with the red light flashing 6 times....

York 92 % eff. Furnace will only start & run when I fill the inducer to trap hose with water. Will run about two to three hour and then shut down on # 3 error ( pressure switch) .Please help!

My York gas furnace is not heating and the red light blinks intermittently 3 times. Fun is working. Anyone knows what to do? Thanks

Changed thermostat. Now York gas forced air furnace has a flashing green code on PC board. Thermostat says heat is on, but furnace will not run. Fan will also not run in "on" position, but did earlier before setting the thermostat setback values

I have a Trane forced air furnace which recently has had periods when it blows unheated air. When I looked at the furnace during these periods it shows 2 flashes, which according to the instruction manual is an error code which means: System lockout, retries or recycles exceeded. I don't...