I have an Carrier Infinity 58CVA110 Furnace and I just installed a Carrier Infinity thermostat SYSTXCCUID01-B. All instalation was as per exact carrier instructions. Now it seems my variable speed fan only runs at the same RPM regardless of being on low/hi burner. The burner still starts on low then ramps up to hi fire as required but my blower motor stays at same speed. I had a Honeywell Vision Pro on it prior and you could hear the blower speed up when furnace switched to hi fire. I ran check system on thermostat it runs low/hi fire properly, no fault codes and no signs of problems. I can manually set the fan speed with the low/med/hi on thermostat with no issiues but I leave it on auto. Can anybody help me out! Also my static pressure is around .75 is that to high?