Climate control issue: no heat from dash vents?

[stickrod]

I’m having an issue with my climate control and I’m not sure a FSR will remedy the issue.
I have heat through my foot well vents but I get no heat (at all) through the dashboard vents. In other words when I select the mid level and floor blowers heat is only coming out on the floor. The temp mixture wheel between the center vents is set to three red dots. I have full control of the blower speed which makes me think the issue is not resistor related.

Admittedly I have not checked any fuses yet. Any help in diagnosing my issue would be greatly appreciated.

[mystere]

Having the same issue. No heat from front vents when knob turned to three red dots for heat. The knob almost seems to be the issue. Is this a simply fix? Any help is greatly appreciated.

[rocky1536]

Stickrod, first try what mystere mentioned...I was stumped when I wasn't getting hot air though it was turned all the way up..I was about to add coolant, then realised the damn nob on the dash somehow got turned to cold.

If that doesn't work, make sure you indeed have enough coolant to supply the heater core.

[amacman]

each vent has an open / close wheel also . white marker line on the wheel can move between I and 0 marks on the surround .
also need to press the selector button on controls that light up green .