Trying to replace Trane Thermostat BAYSTAT240 with Hunter 44860 Posted by toomeyville on Jan 10th, 2009 at 7:54pm Baystat 240 to Hunter 44860 Trying to switch out. Think I have wiring right: Baystat - Hunter R - R O - O (should this be jumped to B?) G - G Y - Y1 X2 - E B - C W - W2 I think I have wiring correct, but system does not start when I flip the braker. Please help. No heat!