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Old 07-05-2007, 05:58 PM
denisond3 denisond3 is offline
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Re: What's wrong with my a/c

Yes, I think dropping to 10 psi is too low. The high side can go from 100 up to over 240 in normal Ops, and I think the low side should not go much below 40 psi. If it does, I would assume it was either low on refrigerant, or had a blockage at the entrance to the evaporator (-the orifice tube- where the pressure drop is). If it has water in the system, that is where the water is likely to freeze, and prevent enough flow of refrigerant to do any cooling. Its the sort of thing an experienced tech would probably know right away. Im only guessing.
I would think a low side pressure of 10 psi might be low enough to turn the compressor off periodically.
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