What controls the how long the force air furnace runs to heat the house,
It seems to cycle much to fast and will not heat the house.
Furnace starts,burner starts the blower comes on, maby one minute, furnace goes out
Blower runs for a short wile and shuts off.
Warm air does come through the vents but does not run long enough to
Heat the room the rooms both close or are far away from the heater