Hi, I have a comfort maker prj ii gas furnace. The blower turns on, the ignitor glows and it only ignites one side of the blower. I have a Filtrete 3M-30 Thermostat and I set it for 1 Stage. This morning I decided to switch it to the 2 Stage Heat and AC, but it still will only ignite one side. The room temperature keeps dropping, which then keeps my system running to try and catch up. How do I get the other side to ignite that blower? I am not at home right now, so I cannot look anything up. I also noticed people mentioning red flashing lights, where on the system, is that located?