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    tomb705 Posts: 1, Reputation: 1
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    May 18, 2013, 05:59 AM
    High side pressure
    We have a split system unit at work that two ac guys has worked on, supposedly everything has been changed except the lines between the outside unit to the inside coils, and there is about 15 splices in these lines do not know why so many. But the high side pressure has a reading of about 450 psig, while low side is 75 psig what could be causing the high side pressure to be this high.

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