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Old 12-10-2010, 05:17 AM   #1
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High pressure switch on-of, on off


2 year old Trane heat pump--When in heat mode the high pressure switch shuts outside unit off,restarts in 10-15 seconds and repeats 3-5 times. Tech came out and diagnosed a faulty t-stat. New t-stat eliminated problem for 4 days but now it's doing the same thing again. Tech said pressures were right on , so any ideas. Unit is spotless,coil looks new,airflow around unit is clean
????

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Old 12-10-2010, 11:14 AM   #2
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High pressure switch on-of, on off


sounds like a restriction in the system causing high pressure

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