Carrier Infinity System Thermostat...The actual temp remains a constant 79 degrees. This seems to have occured after a recent power loss. AC and heat are functioning properly, but must be turned on and off by system on/off button

Make sure the Thermostat is set correctly! The problem with mine was the temp in the house was colder than my A/C lowest thermostat setting.I had my AC temp setting on 66 degrees.The temp in the house was a little lower so the AC didnt kick on just the fan blowing cool air and no compressor working. The next day it was warmer out and the house temp was 79. So when I powered up the AC set at 66 i heard the compressor kick in and the AC worked fine.

These are both power open and closed. Yellow and green should be constant on the leds. C&D is your 24 volts for the controls. If you got power going in but nothing coming out of the board it is bad. If you got 24 going to the damper but damper not responding obviously it's bad. Usually communication is DC voltage, likely 12 or 13 DC at A&B. Good Luck!!

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Unit might be under size

carrier infinity 96 furnace went to turn down the thermostat and their was no power to it and the furnace doesnt run

The outdoor thermostat senses the the temp of the outside air, and adjust the boiler water temp according to what it knows is best. The reason that the boiler is running longer is the old boiler used to be constantly sending 180ish degree water to the baseboard, now that water may only be 140ish degrees. The idea behind this is to reduce off cycle heat loss, as the greater the temp difference between the air temp and water temp, the quicker you loss heat. The theory in boiler run time is this, the less times it starts and stops, and the long run times will give you the best efficiency. Hope this answers you questions.

lower temp setting lower then outside temp should work

Ok what you need to do is call your local service company and have a technician come out and check your Thermostat, its currently not able to read humidity probably due to a power surge

Your GE combo is way overdue for replacement.

well with 62 outside temp and then maybe a little solar gain and body heat you very well could be 5 degrees warmer then outside

Open the flap, and press and hold the advanced button for 10 sec. you will be in the Installer setup screen. scroll down to the setup subfolder and select thermostat and it will be in there.