When I bought my crx, the heater control panel was in the glove box due to the clips being broke. However, it worked perfectly fine. I bought a new unit and put it in, but now it only blows cold air. The only difference is this unit has the a/c control and my other one didnt, but my car doesnt even have a/c anyway. My question is is there some sort of adjustment or something that could be changed or why would it only blow cold air now?