My programmable Carrier Touch n go thermostat is off by 3-4 degrees. How do I calibrate it?

Going to need to read through the instruction manual very thougharly. May be as simple as setting the correct heat cycle rating to your current heater. If you don't have the instruction manual. Contact carrier or a carrier dealer and see if they can locate one for you. Good luck.

Its in the set up mode. You will need the install manual and not the home owners manual to get into the configuration. You can change the set point plus or minus 5 degrees. Its not hard to do, but at the time I don't remember the set number after you hold the fan button down for 10 seconds. You can do more damage than good with out the instructions, I will see what I can find.