Had an issue with my 25-PDV stove which involved doing a factory default on my control board. The stove is working fine now, but the reset of my control board has it in the mode that will not allow me to set my blower speed lower than the heat range and cannot set the blower to 0 or shut it off. How do I get back into the mode where the heat range and blower speed setting are separate! I've searched everywhere and cannot find the steps to change this!