[Wayne 962]

So, I shortened the duct - I still have the problem, although it seems "less" now. I think that there may be two problems - a poorly designed intake system, *and* a motor that may be getting old. When I shortened the intake, I rant the unit for a while with it disconnected - still gave the error code. Also did it when I removed the filter. Maybe there's a blockage on the pressure side, although it shouldn't work then when I open the blower compartment and bypass the intake.

I wish these machines had better error diagnosis codes...

-Wayne