Hi,

Less than a yr old system. Why is my Infinity thermostat displaying;
Code 74 -- No high voltage at compressor
Two service techs come and do the yearly service check up recommended by carrier and after hay were all finished, the thermostat was displaying the above code. They tried to dismiss the warning, but it kept coming back. They came to the conclusion that the thermostat is defective! WHAT? The thermostat was working fine before they came! What are they talking about?

PLEASE HELP!

You`ll have to ask them, call the company,explain probablem, you paid for a service you didn`t get, ask for different techs to come out for the money you have already spent