performed fall maintenance Went up to package unit opened electrical and furnace cabinet Check all safety switches and wire connections to make sure we're tight High voltage 244.6 low voltage 27.1 Cleaned off and examined flame sensor and pilot igniter for cracks, rust or dirt Cleaned and blew out furnace and electrical boxes and components with brush and battery powered blower Cleaned out gas orifices for a strong gas flow Cleaned out heat exchangers with blower Checked inside heat exchangers with small camera for any cracks or compromises nothing visually wrong Tested heating operation from thermostat wires inducer motor came on followed by spark igniter then burners seconds later blower motor came on heating system operating at this moment Cleaned out condensing coils and on top of unit and around unit and roof Unit running per manufacturer specifications Job Complete