We have a new 262 with the round bedroom thermostat and it was finicky when running the furnace. I had to toggle through, heat, AC, back to heat before it would turn on the furnace. It works fine but took a few tries. And the smell was almost toxic from the fabric/plastic ductwork. The smell dissipated after a few furnace runs. Also, I checked the ductwork and several places were torn where the installers yanked it through a too small opening. I fixed it with...duct tape.