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No A/C compressor no power

Steve from SoCal

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I have a 1996 Teton with two Dometic air conditioners, the main unit stopped cooling a few days ago.    I had the t-stat set and noticed the temp was not holding, I reset the temp to 64 and the compressor would not come on.     I turned that unit off, thinking it may have been over worked?     The bedroom unit worked for almost a day before it stopped cooling as well.    I have the four button t-stat and tried doing a reset on that several times using the up/down buttons and mode button.    The backlighting will go out when I do a reset on the t-stat.     The failure of both units at nearly the same time suggest the problem is with the control not the cooling units themselves?   


Any insight on where to look?      The capacitors cheek OK with my meter, the fans run and there is no outward signs of damage on the roof top units.      There is no voltage at the capacitors on the roof top units, this is including the waiting period for compressor start.   

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