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Thread: txv problems
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08-09-2011, 12:57 AM #1
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txv problems
so do txvs go bad after sometime. i had a service call on a 410a carrier system. suction pressure was low 60 psig. discharge pressure was 235 psig. I let the home owner know her txv was bad and changed it out ran the system in cooling and the ac was cooling.
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08-09-2011, 06:55 AM #2
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Its a mechanical device with moving parts in it. Yes they can go bad
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08-11-2011, 04:12 PM #3
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pressures sound low... did you leak check?
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08-11-2011, 04:17 PM #4
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The house is a track home 5 years old I checked the welds and found no oil staining so I don't think they were leaks
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08-11-2011, 04:32 PM #5
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once you replaced the txv, what was the subcooling? both pressures were pretty low for 410a
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08-11-2011, 04:54 PM #6
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Subcooling was 11 degrees and suction pressure was 165 and discharge pressure was 265
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08-11-2011, 05:25 PM #7
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Still seems strange. Head pressure seems low. With a suction that high you'd expect to see mid eightees inside. So I'm assuming it was hot out. Is the condenser shaded?
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