Sep 17, 2018 · Carrier air conditioner troubleshooting tips can be found online if the machine isn't cooperating. If all else fails, call Carrier technical support. They can walk you through reprogramming a thermostat that is not working with the information you are putting into the box. Always check the batteries in the display unit. Jan 21, 2019 · Carrier thermostat models Carrier Infinity thermostat . If you are a modern client looking to upgrade your home to be a smart home, then this is one of the models that can make your dream come true. They are operated based on what your temperature preference is and in the long run save you any utility costs.