Demand call on a 2009 Rudd heat pump split package unit. Found the downstairs zone slam shut manually open the damper homeowner is going to leave it this way until they decide on what they want to do about their system. The zone system is in pretty bad shape due to corrosion also the outdoor unit is in bad shape as well there’s a lot of water damage on the inside of the unit. Recommend replacement of system also the zone dampers need to be replaced as well. No further action is needed at this time .