Preform maintenance on Trane gas fired (2) zone furnace with UV light kit and bypass humidifier: turn thermostat to off position Access the furnace in the basement Remove the furnace cabinet door Shut power to the system Remove the dirty air filter And humidifier water panel Remove the flame sensor and hot surface igniter Removed all burner jets from furnace Vacuum and dusted furnace cabinet and components, clean and clear Vacuum and dusted blower cabinet and components, clean and clear Vacuum and brushed burner jet’s clean and clear Cleaned flame sensor with copper bristle brush, and polished clean with steel wool Inspected hot surface igniter- okay Reinstalled all burners, Flame sensor, Hot service igniter and burner tray back in place Installed and dated brand new 14 x 24 by one air filter Install the brand new humidifier water panel provided by customer #35 Secured and inspected all electrical wiring, and components The UV Light kit is over two years old and bulb replacement is re