New member here. I have an old Ruud Silhouette 2 75,000 BTU 80% upflow gas furnace from 1995, and ever since yesterday the blower motor and inducer stay on after every heat cycle unless I turn the power off to the furnace and wait about 15 mins to turn it back on. If I turn the power back on any sooner than that, the blower and inducer instantly come on but the heat cycle will not start. But if I wait about 15 mins or so to turn the power back on then I can get the heat to run. I disconnected the 2 wires at the high limit switch and jumped them with no change. I haven't tried that with the roll out switch yet, but I did check it and it hasn't tripped. I also removed the thermostat faceplate and they both still run. But when I let it sit long enough and turn it back on it's fine. I can jump the thermostat wires and run the fan and inducer and they stop when I disconnect them. Also if I suck on the hose to the pressure switch it opens and closes. I did install a Honeywell touchscreen thermostat a few months ago along with new 18/8 wire, a new ignitor and gas valve. Everything has been working fine until yesterday. I just wonder if the thermostat is junk or if it's something in the control board. Filter is 1 week old, and I took the whole thing apart and cleaned it all about 2 weeks ago. I have a brand new Goodman 96% 2 stage furnace in my basement still in the box, just trying to save up some $$$ to have it installed. Please help!