I have a coleman 7900b furnace that will run on continuous but the blower will not kick on on automatic. It works fine on the air conditioner setting but will not on the heater setting. Any suggestions?

Does the furnace light off and heat the home when the blower is running continuous?

Yes it does.

Probably the heating fan control.

I will change that. Hopefully it solves the problem. Will let you know. Thanks