My wife and I recently moved into our new house that has a Bryant Evolution two-stage furnace.
Everything was working fine for the first month or so until we recently saw the System Malfunction error pop up on our control pad.
We made a call to our HVAC installer who came out, checked the furnace and looked up the diagnostic code for the system malfunction. He relayed to me that the code indicated that the furnace's low-stage would not fire-up which he believed was due to wind blowing across/against the furnace flue and causing back pressure thereby preventing the low-stage from igniting. He suggested I put something around the exhaust pipe to block any strong winds from it. He also said that I could turn the system off and then reset power to the furnace to clear the warning.
I've taken up his suggestion and I got a couple signs to block the wind from directly blowing against flue exhaust while giving it enough clearance so as not to block the intake or the exhaust (it's a concentric pipe). Everything was going good for about 2 weeks until it got very windy and I would keep getting the system malfunctions.
Are there any kind of devices/contraptions to place the flue's exhaust to prevent this problem? Or could there be some other problem?
Also, things have calmed down for the past couple of days and I still have the warning pop up on the control.
I'm ready to call my HVAC installer but would like to have more knowledge about the matter.