Diagnosed blower not running due to fan belt jumping off pulley. Found motor pulley to be campered inward on the top causing the belt to jump off. Remounted blower motor and put belt back on pulley. Did improve camper of pulley tho it is not perfectly level. The bracket does appear to be warped. System is 20 years old and due to be replaced. Customer states that they intend to replace it in 2023.