I would be interested in the price for the upper control panel, but I've neglected to tell you that my AC is not shutting off automatically. I also thought I'd better replace the lower thermostat (secondary has no continuity), and replace the thermostat, to eliminate those possibilities, then see if...

Thanks for the prompt reply.

If I added more wires to the thermostat, could the Heat & Cool functions then be controlled at the thermostat? My digital stat does have Heat/Cool and Fan On/Auto, and two only buttons for setting temp, no other controls on the thermostat.

Coleman Presidential III LP Gas Furnace Intertherm A/C unit (split system) Furnace Model No: 7956-856 Serial No: 058774442 Is this furnace supposed to work with only two wires connected to the thermostat? Only 18/2 connected to stat, and I have to turn the main On/Off switch (at furnace) to ON to ge...