Coleman Mach Model No. 8333C876, Serial number 030508618. I just bought a 2005 Jayco Popup Camper with this unit on top. Both Low and High Fan controls work OK. when I turn the AC knob to High Cool, it will blow cool air. then after about 2 minutes, it seems to power down to a slow blow and my propane alarm begins beeping once per sec. Not sue if its related to the AC unit or the alarm. itself. Hopefully someone can decipher a solution with this description.
It could be the t stat or main breaker
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Did you double check that breaker for power didn't trip? Are you hearing anything at all, when you try fan only, or cool is selected, such as a slight "hum" or "click" at ceiling area?
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