Upstairs - System Inspection Performed thorough inspection on upper level system, 12 year old Trane system. Looked over duct work, air flow, checked all components and electrical connections, performed safety inspection on heat exchanger, and adjusted manual dampers to increase air flow to primary bedroom suite. Observed that the high limit was burnt/discolored from over heating. Also observed several cracks and some rust/holes in the primary heat exchanger. The blower wheel and motor are impacted with debris. There is no wet switch or inline flood protection switch. The evaporator coil pan had biological growth building up on it, and the inducer motor is over amping. After going over the system current condition.