Annual Furnace precision tune up; clean and tune up furnace; clean burners, test ignition components, adjust gas level, test safety circuit, check indoor motors, checked all electrical components, tested indoor air flow, checked heating temperatures, and tested overall furnace operation. Furnace operating well at this time. Customer explained Wi-Fi issues with thermostat. Turned off WAC setting per Honeywell. If further issues occur, call Honeywell customer support.