I did a search to see if this topic was covered... I think this may have been it
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/96-hatch-problem-my-climate-control-doesnt-blow-correct-direction-2152785/

But it sort of sounds like they are talking about the buttons,where I am having problems with the Heat Slider...

It basically came this way when I bought it, but when I slide into the red, it blows cool air, and when I slide into the blue, it blows hot air...

Im sure the fix is (hopefully) simple, but i have no idea where to start

Any tips?

 

Inspect the valve on the firewall and air mix control cable near the front passenger's left foot.

 

I have no Idea what the hell im looking at in this pic lmao. ill give it a try soon though