Threw two codes on my mt vernon stove today. Woke up stove was off and showed "conv over I" and "comb over I" reset stove started up fine. good flame, came up to temp room blower kicked in no problem. decided to shut down stove, as soon as i chose shut down, both blower motor and exhaust blower shut down and same code is displayed. aprox three tons burned in stove, stove is new this yr. Both motors spin freely with no effort to turn them. Any one??