I have a 9300ts furnace and the heat is not turning on. I tried pulling the fuse out and turned the switch on and off and the furnace is not igniting when I put the fuse back in, and the switch back on.

When I turned the power switch and fuse back on, I held the button for like 1 minute to see if it would ignite, and it didn't. The model number is a 58 MTA.

There are just too many things that could be the problem. If you can give a detailed description of exactly what is happening,(like is the draft inducer running, do you ever hear gas flow, are you getting a flashing led light on the control board?). If you aren't certain of the sequence of operation on your furnace, I suggest calling in a HVAC tech, and have them sort it out. Good luck and please let us know how things work out.

PS. If you are fairly knowledgeable on your system, give us some more info and we will do our best to help out. Take care.

I agree with mygirlsdad77, we definitely need some added information here. Post back so we can help, thank you.