I changed the primary filter and now, I get both hot and cold air, at cooler settings. I can feel the air at the vents.

I thought I may have knocked one or more of the vacuum lines but none seem to be loose.

When I turn on the AC, I get just cold air (which is good). But at other settings, with temp in the blue region, I get both hot and cold air.

Checked the fuses and they look good.

Any suggestions ? Any help would be appreciated.

Thanks!