Hi All,

Hoping to get some quick help and keep the repairman at bay.

Our Trane XE90 furnace keeps powering on, but it will not send any air out, warm or otherwise. We have changed the air filter... it is blinking three red LED lights, but I can't find out what that code means.

Many thanks in advance!
Jennifer

The code should be on the back of the bottom door or the control board its self. 3 usually means pressure switch. Does the furnace vent with metal or plastic pipe?

XE90 is a 90 plus efficiency, check for blockage in flue pipe.

Thanks all. I think I'm out of my comfort zone on this one. Probably better just to pay the damn weekend rate and get this fixed.

I appreciate your help!
Jennifer

FYI... I think it vents with plastic pipe.