AC Unit won't turn off

Old 12-04-12, 12:28 PM
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AC Unit won't turn off

I have a Trane XB1000 AC unit that runs continuously. Once the house reaches the desired temperature the blower inside the house shuts off, but the unit continues to run. I figured that running the unit 24/7 wasn't good so I have resorted to shutting off the breaker when we are not using the cooling. I took a blind shot at it and changed out my thermostat which gave no new results. Can someone point me in the right direction on what part to replace or how to diagnose the issue?
Old 12-04-12, 08:55 PM
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The contactor is probably "welded" shut.
It should not be pulled in without 24VAC to it's coil.

Inexpensive part...

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