I have a old carrier furnace Model 58SE100-2 series 214.
I like to leave the "house fan" on, all the time so it can filter the air of the house all day/night. How do I set up the furnace blower speed so I can keep the lowest speed when it is on all the time and then the speed change when the thermostat calls for heat/cold
The motor has three speed low-medium-high. I do have a picture of the circuit board if that can help but i don't know how to post it on here.
Can anyone help me with this issue please