Dash A/C question

imgoin4it wrote:
dougrainer, only owned the Newmar for 10 years and there is a dial thermometer stuck in the dash outlet and one in an RV air outlet that gets moved from front to back from time to time and I guarantee that when the compressor is running it will be close to 40 degrees. An0ther old rule of thumb is that with compressor running an automotive outlet air temperature will be about half of the outside air temperature/ That's basically the temp that is coming off the coil. What do you suppose the temperature is just before or when the coil frees up and the unit goes into defrost mode. If your coming through Alamogordo you have an open invitation to stop by and we will check it out

I have been working on and fixing Motorhome Dash AC systems for 38 years and still working. I also have worked on and fixed Newmars for 25 years. 40 degrees is NOT a standard or benchmark for a Motorhome AC system. If you look at the links I posted, that Evans Tempcon system is what is used in your year Newmar. Look at the chart, 50 to 60 output above 80 degrees is what is standard. The system CANNOT freeze and there is no defrost mode. Your model DOES have a mechanical tstat in the evap, but it will never have to trip the compressor OFF because the evap will never get that cold. As I stated, you CANNOT compare Automotive rules of thumb or benchmarks on a Aftermarket Motorhome AC system. I take issue with what you stated because just because yours gets to 40 or you actually believe it gets to 40, you post that ALL should do that. That is not correct, which is WHY I posted the actual guidelines. Dial Thermometers ARE NOT accurate. Doug