||10-17-2009 03:17 PM
Trane XE90 - pressure switch error (with pic)
My Trane XE90, model TUC100C948B7 just threw me a code - Pressure Switch Error (3 flashes) last nite. I opened the panel and took this picture (attached)
1, What is B (a silver round thing), is this a pressure switch?
2, What is A (look like a motor) connects to the PCV pipe lead to outside the house, this part is hot to the touch eventhough the furnace was not running. Since I have 2 Trane XE90, I also open the working one, and the motor in the working unit is cool not as hot.