u/FAVLC

Ok this one has me stumped. Just bought a new home with an upstairs that will not drop down in humidity. There’s not condensation on the walls or anything but it definitely has a basement type smell. Had a pretty thorough inspection and nothing came up. We’re in Austin Tx so it’s always humid outside but I’ve never had humidity issues inside. For reference, the first picture is the upstairs (on its own system) and the second picture is downstairs. Right now I’m trying to run the AC a bit more upstairs to dry out the air but so far it hasn’t worked. Any suggestions on who to call to help troubleshoot this one? Thanks!