Wired in new add a wire system. Removed old thermostat and installed new T4 thermostat. Cycled system. Found that thermostat was not able to call system. Checked zone board and found that board is not sending signal to furnace. Called install crew and asked about this issue. They stated that the board was an issue on install and they had to bypass board. Office to follow up about options. Home is currently not two zone, it’s only one zone. My job complete.