Thanks for this. How would I wire my thermostat if I want 2 stage heat but only 1 stage AC? I do not have a 2 stage AC unit but I have a 2 stage furnace.






Update amazon now offers a free smart home consultation

Thanks,
Steve

Quote Originally Posted by Thermostat View Post
4 wire Filtrete 3m50 wiring diagram for a 1 cool 1 heat unit
Click image for larger version. 

Name:	3M-50 AC.jpg 
Views:	14216 
Size:	32.2 KB 
ID:	72