mine was free just because I had the warrenty transferred over for 100

Tripped breaker means NO THERMOSTAT
 

If the breaker is (somehow) tripped, then your thermostat won't get 24v power and a remote (eg Nest) will be blank (no wireless).

In this case, the OP is seeing a setpoint much lower than the actual house. As others pointed out, likely a blown blower motor or clogged condensate line.

My thermostat has a red light that comes on when their is a problem. Yours might too.

If your thermostat is set at this high a number your ac should have no problem reaching that temp. Definitely a problem. I had a 4 degree difference two summers ago and ended up with no ac at all. First SunKool changed the coil, then the capacitor, then the compressor before it finally worked. This all took 3 weeks in stifling heat in August 2022. It was brutal. Despite me telling the service man over and over again with every service visit that my thermostat wasn’t reaching the set temp, he would tell me that it was normal in the heat of the summer. It is NOT NORMAL! Your ac should bring the temp to what you set the thermostat. Call your service company and if it’s SunKool get another company!

I know my system will cool my house at least 25 degrees below the outside temperature, but there is a limit. I wouldn't expect to be able to cool my house to 50 degrees on a 100 degree day but cooling to 75 degrees works just fine. Since replacing the compressor made yours work properly, you obviously were not asking for anything excessive.

My thermostat was set to 74. In the morning the temp would be 74-75 when I woke up. By noon the actual temp in my home was between 78-80. This was an ongoing situation that the serviceman claimed was normal and that I would never get my temp to any less than 10 degrees lower than what was outside. (BTW the thermostat was no where near a window in case you were wondering). So he was trying to convince me that if it was 95 outside I would never get the inside temp to lower than 85. I call bull-oney since that was ludicrous. So again, when it finally completely went it took 3 weeks in brutal heat with the only cool air coming from the portable unit I bought. I learned a lot about air conditioning that summer and was very grateful that my house was under 5 years old so still under parts and labor warranty. I also learned that by calling Carrier directly I finally got the needed parts installed.

Baloney is correct. The achievable temperature difference between outside and inside temperatures should be at least 20 to 25 degrees. I would suggest that you write down the model number and serial number for your Carrier system from the sticker on the inside air handling unit. Then, go to the Carrier warranty website where you will see the exact status of your warranty. You can also find the authorized Carrier dealers in the area. The most prominent dealer is Munn's.

Some HVAC repair companies claim that they can do Carrier warranty work, but I suspect that some of them will partner with another contractor. For example, if a non-authorized company diagnoses a defective compressor, I doubt that Carrier will send them a new compressor under a warranty claim because the compressor could have been damaged by a faulty installation.

The best way, and probably the most accurate way to check if you A/C is running correctly temperature wise is to take a temperature probe and stick it through the foam return duct at your air handler and take a reading then do the same at the output at the top of the air handler. The most you should see is a 20 degree temperature differential. 15-20 degree differential is considered "normal" but it should be close to 20 degrees once running for about 15 minutes. This will remove all the other variables trying to measure against the outside temperature. You can then take blue tape and cover the holes for next time. These HVAC temperature probes are available on amazon. Amazon.com

83?! 🥵🔥

Would be interesting to have an OP update to this post as to what the real problem was. People care enough to offer their time to respond, and others read and appreciate advice that may help them in the future. Which if any of the responses came close and what has been done to solve the dilemma?

I had the HVAC system freeze up due to a failed temperature control valve. Some cooling came from the system but not enough to maintain temperature control.

Had a similar problem years ago. Indoor coil froze preventing cooled air to get to the house. Turned off the A/C, coil thawed, water dripped past the drain pan and into the return duct below the unit. The weight of the water collapsed the duct separating it from the unit. Took two days to dry out the fiberglass duct. Had to cut a hole in the side of the plenum to repair the ductwork.
Hopefully you won’t have the same issues.

I don't disagree with your technical method. But, my thermostat is always set on 78 degrees and, on some days, the outside temperature has exceeded 100 degrees, with no increase in the inside temperature. So, my system is able to maintain at least a 22 degree difference between the outside and inside temperatures. I have several outside and inside thermometers, so I know this is correct. I have not tested it to see if I can lower the thermostat setting and achieve a lower inside temperature. I don't know what other variables I would need to consider.

That's fine. As I mentioned, the A/C can only reduce the temperature of the RETURN AIR, not the outside air, 20 degrees. And you measure this by taking a temperature reading at the return duct at the air handler and another reading at the output of the air handler at the duct right above it. You should see a maximun of about 20 degrees. Regardless of the outside air temperature, whatever the air temperature inside your home shoud be the reading you get at the return duct at the air handler. This is why you should never turn off or significantly lower your A/C on very hot days. If you do this it will take a very long time for your A/C to bring down the temperature in the house.

NOT OKAY AT ALL ! Only time we had anything like that was when we (foolishly!) did not keep track of putting the monthly white vinegar down the drain line and.... well, you KNOW what an expensive mistake that can be !