Question about Dometic Rooftop RV Air Conditioner

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Have a duo therm ac unit that blows hot air - Dometic Rooftop RV Air Conditioner

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  • Mike Butler
    Mike Butler May 11, 2010

    Obviously blower fan working , but no sound of compressor kicking in?

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THE REVERSING VALVE MUST REMAIN ENERGIZED ON A DOU THERM A/C IN THE COOL MODE IF A/C HAS HEAT PUMP BUILT INTO IT. IT WILL BLOW HOT AIR IF IT DOESN'T GET ENERGIZED. MAKE SURE VALVE IS GETTING POWER TO IT. TAP IT A FEW TIMES IF IT ISN'T AND SEE IF THAT FREES IT UP. IF THE VALVE IS NOT GETTING POWER CHECK WIRING ALL THE WAY BACK TO PC BOARD. IF WIRING IS GOOD REPLACE BOARD. IF REVERSING VALVE HAS POWER AND TAPPING IT WON'T FIX PROBLEM, REPLACE VALVE. THIS INVOLVES BREAKING INTO THE CLOSED COOLANT SYSTEM AND MUST BE DONE PROFESSIONALLY. GOOD LUCK FINDING A PERSON TO DO THIS. MANY COMPLETE A/C'S GET REPLACED BECAUSE OF THIS PROBLEM.

Posted on Aug 28, 2009

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Sounds like the compressor is not kicking in.

Posted on Jul 16, 2009

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