Hi, I can answer your question, lets handle them one at a time. Click 'accept' when you are satisfied.. or we can get another expert.
IF you can find where the thermostat wires land in the furnace you can jumper red to green.. that should start the fan and tell us if the problem is in the thermostat or some other controls ... we then go from there.
Get back to me if you feel like doing that test.
I did the test jumping the thermostat wires in the furnace and the blower came on.
Jumping the red to green wires caused the blower to start. Where do I go from there?