In room temp mode the stove operates to keep the room sensing probe at the temperature selected on the stove control temperature dial. As the room sensing probe gets closer to the temperature selected the stove automatically cuts back the fire to keep from over shooting the temperature selected. If the room sensing probe temperature gets further away from the selected temperature the stove automatically increases the fire to meet the demand. In stove temp mode the stove operates to keep a constant temperature on the exhaust sensing probe based on the stove control temperature dial settings using the inner dial for reference. The stove will burn at a constant rate and the room temperature will increase or decrease with the outside air temperature.