Coleman rv roof air conditioner

Question

My 7300 series roof air conditioner has been working fine. Today it was on and the temperature in side was fine all day. This evening it starting getting a little cold inside. I pushed up the thermostat to stop (warm up the motorhome). It keep getting colder. I shut off the unit. The compresser keep running. I shut off the mains thinking the unit was frozen. An hour later I turned on unit again and compresser ran again by itself.. Any thoughts? [e-mail] Lee.