Furnace burners will not turn on, but the pilot is lit.
I turned on the heat for the first time this season and no heat came out. I checked the furnace and the pilot was out. I lit the pilot and it stays lit (been on for over a day now.) I tried the heat again and still nothing. So, the furnace is getting power, the fan works when "ON." The pilot is still lit, but the burners will not turn on. What could be the problem? Maybe the thermocouple needs to be replaced? Or is that OK, because the pilot stays lit?