What you have is a packaged heat and cool unit where the a/c condenser, evap. coil, cond. fan, blower motor and heat source are all inside the one unit.
With what you described, I would guess your return and supply ducts from main home duct to the outside unit have been compromised and either come loose or have been torn open.
Inspect them from outside unit to home duct and ensure they are not kinked, loose or torn.
Using all metal duct wrapped with foil backed insulation is best for this. Flex duct will need more inspections and maintenance due to ease of tearing and kinking/collapsing.
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