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Old 08-02-16, 10:09 PM   #13
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250 psig is too high of a low side pressure to gather much moisture. You are correct in assuming that 120 - 150 psig is the range you should be in. Without high side pressure or any useful temperature readongs, it is difficult to venture a guess what is awry.

If you have the r410a, you could just reclaim what is in the unit, pull a deep vacuum, and weigh in the amount of gas on the nameplate. We don't know what previous owners did with the unit, and it would eliminate all doubt about what is circulating inside the plumbing. You could get lucky and have nothing else wrong with the unit...
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