So to make a long story short i am haveing problems with the installation of the carrier infinity thermostat. Ive checked all my wires for continuity. I also have ABCD wires hooked up correctly. When the monitor goes into its plug and play state it searches for the equipment and can not communicate with it. I tried to call Carrier Tech assistance and they told me to call back monday. I really dont want to leave my customers without heat so if anyone has any ideas please let me know. Thanks in advance.