Arrived on site for one gas furnace maintenance and also a humidifier. When on site turned on heating on thermostat to make sure the unit is fully operational. After finding out that the unit operates normally shut off the gas of the unit to shut down the unit a properly. After shutting off the unit removed the flame sensor and cleaned it thoroughly. Installed the flameth sensor back onto the unit and then check the filter of the Furnace. Filter was applied on site, filter was swapped in for the new one. Proceed to hook up my manometers, temperature probes, static pressure probes into the unit ductwork and gas valve. Turned on the gas valve to the unit to turn on the unit.
