Removed defective circuit board and inducer for gas fired Trane High efficiency furnace installed new circuit board and inducer fan. Also installed one igniter as per manufacturer specifications turn system on and checked operations also checked for carbon monoxide. None detected Advised homeowner of the age of the system, which is 16 years old left system working View visual findings from this job here - https://visionshare.xoi.io/?id=XA-15F7-F4E7E4CC1A224D209627BC89E3E80DE0