1983 944 NA. No heat. Blower works fine. Temperature gauge is in the middle.
I know the previous owner had the antifreeze flushed, but no idea if the car had heat before I brought it. It was a FL car.
Now that it's a NY car, I'm trying heat for the 1st time. Maybe it never worked, maybe the mechanic messed something up when he flushed the radiator. Maybe something failed.
Where do I look 1st ?

 

Cable operated valve at the center of the fire wall, rear of engine.

 

There are also two blowers. The large **** is for AC, small for heat.