I just leave mine in Auto and it will run occasionally "enough". I had the system serviced last October and it needed additional refrigerant, but that's not unexpected on a 12 year old car.

Chip H.

 

http://www.ebay.com/itm/152191859688?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
This version works with any operating system. Looking forward to trying it out. He dropped the price so it finally reasonable to purchase.