Trouble With the Blower Motor on an Electric Furnace

Make sure all switches on your furnace and thermostat that should be on are switched to the "On" position, and that everything that needs to be plugged in is plugged in.

Find and reset the thermal overload switch. This switch may have been tripped if your furnace overheated. It is usually a red button located on the blower motor itself.

Check the fan belt and replace it if necessary. If it is broken or damaged, the motor will still run but the blower fan will not turn.

Shut off all power to your furnace if you have not done so already, and try to spin the blower fan by hand. If it does not spin readily, look for oil ports on the blower and add a few drops of oil. If it does not spin at all, it is probably broken or jammed and may need to be replaced.

Check all wire connections and look for loose, broken or improperly connected wires. Fix the wiring if you feel confident enough to do so; otherwise contact a professional.

Check for blown fuses or tripped breakers that may be preventing your blower motor from starting. Replace fuses or reset breakers if necessary, then plug the furnace back in and try to start it again. If the fuse blows again immediately, it means that the motor is broken, jammed, defective or shorted out. It will have to be replaced or repaired by a specialist.