American Standard Freedom 90 Operation Question
I have an American Standard Freedom 90 gas furnace. On heating days it seems to run almost continuously. After the initial morning warmup, the unit will come on and run for 5-10 minutes, be off for 5-10 minutes, etc. etc. I notice on the thermostat (American Standard ACONT800) that the temperature never varies from the setpoint (70 degrees). That is, there does not seem to be any bandwidth...the furnace holds the house temperature at 70 and does not let it fall a degree or two and then warm it up again to the setpoint temperature. Also, I know that this furnace has a 4-speed blower, but the furnace always seems to operate in the two high speeds and never in the lower speeds.
Does anyone here know if this sounds like proper operation for this system? Thanks!