Question about Ruud UAPA024 Air Conditioner

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Upne-024jaz unit burnt contactor found comp. shorted replaced . vac. and charged unit found cap. tube broke at coil on cond. tvx repaired and recharged unit , found suction side pulling into vac. replaced tvx and recharged unit still pulling into vac. on low side and high side set app. 180 and doesn't move as unit runs. assume tvx at coil or rev. vale ?

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There is lack of airflow across the coil due to not being CLEAN. Perhaps a dirty return air filter. Could even be slightly undercharged. Either way, the evaporator is operating below the freezing point of the atmospheric humidity.

Fix it by changing return air filter, cleaning the gunk out of the coil.If its charged already then ignore charging.
some systems that have a leak in them on the suction side can actually go into a vacuum and pull in atmospheric.Also check if there is any vapor block in the system. ------------- thanks.

Posted on Jul 30, 2010


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1 Answer


First, check your compressor wires connections for loose or coroded, then clean them (file or sand them or just add oil to the ends connectors and go with a higher 24-va contactor instead of a 40-va, maybe a 80va 24-volt contactor.

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1 Answer


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