Our heater blower does not blow. Some heat is coming out, but it is not being blown. I pulled the blower out and ran it on 12 volts and it works. I also tested the plug to see if a circuit was faulty, but it works. Fuses all seem fine... Could it be the resistor? Where is it (what does it look like?). Could be be in the control panel? WHAT ARETHE BEST STEPS TO SOLVE THIS PROBLEM?