Just installed a honeywell rth221 and when placed in the heat position, it heats and when in the cool position, it heats. Why can I not get cold air? Old thermostat was a lenox with R, Y1, G, O, W1, C, New thermostat has only Y G on one side and Rh, Rc, and W on other with removable jumper connecting Rh and Rc.