Sorry, no model # due to it being worn off the furnace. During the summer the air conditioner evaporator leaks condensate water on the fan control board and damages it. Customer waited until the heating season to call me to tell me the blower fan runs 24/7 with no heat. I replaced the fan control yet again telling the customer this is the last time I will do this, since she doesn't have money to replace the evaporator coil.
Now after replacing the fan control board, wiring the new one exactly like the old one, I get the ignitor lighting the pilot trying to constantly light the furnace burner with no attempts of the draft inducer or the blower motor coming on. I checked the fan limit, it checks out good with continuity, I checked the draft inducer motor and it ohmed out good, and I checked the pressure switch on the draft inducer housing for continuity. It all checked out good. I also checked the resettable limit thermostat on the top of the furnace housing and that too checks out good with continuity. The furnace blower motor now only works if you set the wall thermostat to run the fan on the "on" setting but it will not run if you set the wall thermostat on the "auto" setting. What could be wrong???