I was called out to Chiquita‘a house because the thermostat was dislodged from the wall and the wires were pulled out. I installed the wires back into the wall and reinstalled the thermostat and the system began working normally. During the visual check we discovered the flue pipe for the furnace is single wall when it should have been replaced with the system to be b-vent/double wall. I also confirmed the system was registered so it has the full 10 year manufacturer warranty.