Arrived to remedy an inoperable system. Upon inspection of the system, found that the air handler would operate and cool the house, but would not do that with commands from the thermostat. Removed power from the system and removed the ecobee from the wall. Jumped the thermostat wires to ensure that everything outside of the thermostat is operating as it should. Air handler is heating and cooling as designed without the thermostat. Built estimate to replace thermostat with a communicating system. Install team will be out tomorrow to rewire and install the communicating thermostat.