Client says the system is not cooling and making a gurgling sound when it’s trying to run. Did a complete evaluation of system. Cycled system on and off several times. Could not get system to replicate what it was doing for the client until about the fourth time. Condenser would come on, but the indoor fan would not. not getting 24 V between G and common in air handler. Put new thermostat on that was left by installers and the fan still not coming on. Diagnosed a bad G wire from thermostat to air handler. Replaced the green wire with a black wire from one of the extra spare wires. Cycled and tested system in heat, cool, and fan on. System is now running properly, all operations OK at this time.