| This furnace turns the fan on whenever the limit switch is open or disconnected.
If you have a counterflow furnace with the fan on top of the furnace and the burner compartment on the bottom, there is a second limit switch inside the fan compartment that has a manual reset --- you have to push a small red button on the switch to get it to reset.
I'm supposing you checked the limit switch and the fusible link just above the burners.
If you have the counterflow type furnace, check for that second limit switch. |