The Advent Air RV Air Conditioner # ACM135 you found will work as a replacement for your Duo-Therm 630515.321 on your 2005 Newmar Kountry Star. The plug will simply connect to your current controller so your thermostat will still be able to control the air conditioner. Since the new AC does not have a heat pump that function will not work and you will only be able to set the front AC to run as a heat pump. view full answer...
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